feat: TextToDiagram v2 (#10530)

* feat: introducing TextToDiagram v2 feature

* fix: eslint issue

* debug mermaid bundle size

* tests: covering the utils

* fix: import mock chunks dynamically to shrink the bundle size

* fix: removing replay feature

* fix: removing unused prop

* fix: bumping workbox cache limit

* snapshots + yarn.lock

* bump mermaid-to-excalidraw@2 and split into its own chunk

* bump node@20

* css tweaks

* move files around & rewrite stream chunk schema

* random naming & file structure refactor + some tweaks

* fix preview theme

* support custom warning renderer

* label and css fix

* fix and rwrite 429 handling

* fix label

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>
This commit is contained in:
Tamas L
2026-01-15 19:15:41 +01:00
committed by GitHub
co-authored by dwelle
parent 6ebf52279d
commit a0b98a944f
45 changed files with 5226 additions and 942 deletions
@@ -44,7 +44,6 @@ import { getSelectedElements } from "../../scene";
import {
LockedIcon,
UnlockedIcon,
clockIcon,
searchIcon,
boltIcon,
bucketFillIcon,
@@ -52,6 +51,7 @@ import {
mermaidLogoIcon,
brainIconThin,
LibraryIcon,
historyCommandIcon,
} from "../icons";
import { SHAPES } from "../shapes";
@@ -928,7 +928,7 @@ function CommandPaletteInner({
marginLeft: "6px",
}}
>
{clockIcon}
{historyCommandIcon}
</div>
</div>
<CommandItem
@@ -60,7 +60,19 @@
}
&[disabled] {
pointer-events: none;
cursor: not-allowed;
&.ExcButton--variant-filled,
&:hover {
--back-color: var(--color-surface-low) !important;
--text-color: var(--color-on-surface-variant) !important;
}
&.ExcButton--variant-outlined,
&.ExcButton--variant-icon {
--text-color: var(--color-on-surface-variant);
--border-color: var(--color-surface-high);
}
}
&,
@@ -33,6 +33,7 @@ export type FilledButtonProps = {
fullWidth?: boolean;
icon?: React.ReactNode;
disabled?: boolean;
};
export const FilledButton = forwardRef<HTMLButtonElement, FilledButtonProps>(
@@ -48,6 +49,7 @@ export const FilledButton = forwardRef<HTMLButtonElement, FilledButtonProps>(
fullWidth,
className,
status,
disabled,
},
ref,
) => {
@@ -94,7 +96,7 @@ export const FilledButton = forwardRef<HTMLButtonElement, FilledButtonProps>(
type="button"
aria-label={label}
ref={ref}
disabled={_status === "loading" || _status === "success"}
disabled={disabled || _status === "loading" || _status === "success"}
>
<div className="ExcButton__contents">
{_status === "loading" ? (
-1
View File
@@ -49,7 +49,6 @@ export const Modal: React.FC<{
aria-modal="true"
onKeyDown={handleKeydown}
aria-labelledby={props.labelledBy}
data-prevent-outside-click
>
<div
className="Modal__background"
@@ -0,0 +1,386 @@
@import "../../../css/variables.module.scss";
$verticalBreakpoint: 861px;
.excalidraw {
&.theme--dark {
.chat-message {
&--assistant {
.chat-message__content {
background: var(--color-surface-lowest);
}
}
&--system {
.chat-message__content {
color: var(--color-surface-low);
}
}
}
}
.chat-interface {
display: flex;
flex-direction: column;
height: 100%;
min-height: 0;
position: relative;
@media screen and (max-width: $verticalBreakpoint) {
min-height: 200px;
}
&__messages {
flex: 1 1 0;
overflow-y: auto;
margin-bottom: 0.5rem;
padding: 1rem 0.5rem 0 0.5rem;
display: flex;
flex-direction: column;
gap: 2rem;
min-height: 0;
border-top-left-radius: var(--border-radius-lg);
border-top-right-radius: var(--border-radius-lg);
@media screen and (max-width: $verticalBreakpoint) {
min-height: 100px;
padding: 0.75rem;
}
}
&__empty-state {
display: flex;
align-items: center;
justify-content: center;
height: 100%;
min-height: 200px;
&-content {
text-align: center;
h3 {
margin: 0 0 0.5rem 0;
font-size: 1.25rem;
font-weight: 600;
}
p {
margin: 0 0 0.2rem 0;
font-size: 0.875rem;
color: var(--color-on-surface);
}
}
@media screen and (max-width: $verticalBreakpoint) {
min-height: 100px;
}
}
&__input-outer {
position: relative;
min-height: 71px;
}
&__input-container {
display: flex;
flex-direction: column;
justify-content: flex-end;
}
&__input-wrapper {
position: absolute;
bottom: 0;
left: 0;
right: 0;
display: flex;
align-items: flex-end;
gap: 0.5rem;
border: 1px solid var(--dialog-border-color);
border-radius: var(--border-radius-lg);
padding: 0.75rem;
background: var(--color-surface-lowest);
transition: border-color 0.2s ease;
&:focus-within {
border-color: var(--color-primary);
}
@media screen and (max-width: $verticalBreakpoint) {
padding: 0.5rem 0.75rem;
}
}
&__input {
flex: 1;
border: none;
outline: none;
font-size: 0.875rem;
line-height: 1.5;
min-height: 24px;
max-height: 120px;
overflow-x: hidden;
border: none !important;
background: transparent !important;
color: var(--color-on-surface);
&::placeholder {
color: var(--color-gray-40);
}
@media screen and (max-width: $verticalBreakpoint) {
line-height: 1.4;
min-height: 20px;
max-height: 100px;
resize: none;
padding: 0;
&::placeholder {
opacity: 0.6;
}
}
}
&__send-button {
display: flex;
align-items: center;
justify-content: center;
width: 32px;
height: 32px;
border: none;
border-radius: 50%;
background: var(--color-primary);
color: var(--color-surface-lowest);
cursor: pointer;
margin-bottom: 8px;
&:disabled {
opacity: 0.5;
cursor: not-allowed;
transform: none;
}
&:hover {
background-color: var(--color-primary-darker);
}
svg {
transform: rotate(-90deg);
}
}
}
.chat-message {
display: flex;
align-items: center;
gap: 0.5rem;
&--user {
justify-content: flex-end;
.chat-message__content {
background: var(--color-primary-light);
color: var(--text-primary-color);
border-radius: var(--border-radius-md);
min-width: 6rem;
}
}
&--assistant {
flex-direction: column;
justify-content: flex-start;
align-items: flex-start;
.chat-message__content {
background: var(--color-surface-low);
color: var(--color-on-surface);
border-radius: var(--border-radius-md);
min-width: 6rem;
.chat-message__body {
font-family: monospace;
}
}
}
&--system {
justify-content: flex-start;
margin-bottom: 0;
.chat-message__content {
background: var(--color-warning);
color: var(--color-on-surface);
border-radius: var(--border-radius-md);
min-width: 6rem;
.chat-message__body {
font-family: monospace;
}
}
}
&__content {
max-width: 80%;
padding: 0.75rem 1rem;
box-shadow: var(--chat-msg-shadow);
}
&__header {
display: flex;
justify-content: space-between;
align-items: center;
gap: 1rem;
margin-bottom: 0.5rem;
font-size: 0.75rem;
}
&__role {
font-weight: 600;
}
&__timestamp {
font-size: 0.625rem;
}
&__actions {
display: flex;
align-items: center;
gap: 0.5rem;
}
&__action {
display: inline-flex;
align-items: center;
justify-content: center;
background: none;
border: none;
cursor: pointer;
padding: 0.25rem 0;
color: var(--color-gray-60);
transition: color 0.2s ease;
flex-shrink: 0;
&.invisible {
visibility: hidden;
pointer-events: none;
}
&:hover {
color: var(--color-primary);
}
svg {
width: 14px;
height: 14px;
}
}
&__action--danger {
&:hover {
color: var(--color-danger);
}
}
&__body {
line-height: 1.5;
}
&__text {
white-space: pre-wrap;
word-wrap: break-word;
}
&__cursor {
display: inline-block;
margin-left: 2px;
color: currentColor;
animation: blink 1s infinite;
}
&__loading {
display: flex;
align-items: center;
gap: 0.5rem;
}
&__typing-indicator {
display: flex;
gap: 0.25rem;
span {
width: 6px;
height: 6px;
border-radius: 50%;
background: currentColor;
opacity: 0.4;
animation: typing 1.4s infinite ease-in-out;
&:nth-child(1) {
animation-delay: -0.32s;
}
&:nth-child(2) {
animation-delay: -0.16s;
}
&:nth-child(3) {
animation-delay: 0s;
}
}
}
&__error {
color: var(--color-danger);
font-weight: 500;
white-space: pre-wrap;
word-wrap: break-word;
display: flex;
flex-direction: column;
gap: 0.5rem;
}
&__error-link {
display: flex;
align-items: center;
background: none;
border: none;
color: var(--color-primary);
cursor: pointer;
font-size: 0.875rem;
font-weight: 500;
padding: 0;
margin-top: 1rem;
text-decoration: underline;
font-family: inherit;
&:disabled {
cursor: not-allowed;
text-decoration: none;
}
}
}
@keyframes typing {
0%,
80%,
100% {
transform: scale(0.8);
opacity: 0.4;
}
40% {
transform: scale(1);
opacity: 1;
}
}
@keyframes blink {
0%,
50% {
opacity: 1;
}
51%,
100% {
opacity: 0;
}
}
}
@@ -0,0 +1,92 @@
import clsx from "clsx";
import { t } from "../../../i18n";
import { historyIcon, TrashIcon } from "../../icons";
import DropdownMenu from "../../dropdownMenu/DropdownMenu";
import { FilledButton } from "../../FilledButton";
import type { SavedChat } from "../types";
interface ChatHistoryMenuProps {
isOpen: boolean;
onToggle: () => void;
onClose: () => void;
onNewChat: () => void;
onRestoreChat: (chat: SavedChat) => void;
onDeleteChat: (chatId: string, event: React.MouseEvent) => void;
savedChats: SavedChat[];
activeSessionId: string;
disabled?: boolean;
isNewChatBtnVisible?: boolean;
}
export const ChatHistoryMenu = ({
isOpen,
onToggle,
onClose,
onNewChat,
onRestoreChat,
onDeleteChat,
isNewChatBtnVisible,
savedChats,
activeSessionId,
disabled,
}: ChatHistoryMenuProps) => {
return (
<div className="ttd-chat-history-menu">
{isNewChatBtnVisible && (
<FilledButton onClick={onNewChat} disabled={disabled}>
{t("chat.newChat")}
</FilledButton>
)}
{savedChats.length > 0 && (
<div className="ttd-dialog-panel__menu-wrapper">
<DropdownMenu open={isOpen}>
<DropdownMenu.Trigger
onToggle={onToggle}
className="ttd-dialog-menu-trigger"
disabled={disabled}
title={t("chat.menu")}
aria-label={t("chat.menu")}
>
{historyIcon}
</DropdownMenu.Trigger>
<DropdownMenu.Content
onClickOutside={onClose}
onSelect={onClose}
placement="bottom"
>
<>
{savedChats.map((chat) => (
<DropdownMenu.ItemCustom
key={chat.id}
className={clsx("ttd-chat-menu-item", {
"ttd-chat-menu-item--active": chat.id === activeSessionId,
})}
onClick={() => {
onRestoreChat(chat);
}}
>
<span className="ttd-chat-menu-item__title">
{chat.title}
</span>
<button
className="ttd-chat-menu-item__delete"
onClick={(e) => onDeleteChat(chat.id, e)}
title={t("chat.deleteChat")}
aria-label={t("chat.deleteChat")}
type="button"
>
{TrashIcon}
</button>
</DropdownMenu.ItemCustom>
))}
</>
</DropdownMenu.Content>
</DropdownMenu>
</div>
)}
</div>
);
};
@@ -0,0 +1,178 @@
import React, { useRef, useEffect } from "react";
import { KEYS } from "@excalidraw/common";
import { ArrowRightIcon, stop as StopIcon } from "../../icons";
import { InlineIcon } from "../../InlineIcon";
import { t } from "../../../i18n";
import { ChatMessage } from "./ChatMessage";
import type { TChat, TTTDDialog } from "../types";
import type { FormEventHandler } from "react";
export const ChatInterface = ({
chatId,
messages,
currentPrompt,
onPromptChange,
onSendMessage,
isGenerating,
rateLimits,
placeholder,
onAbort,
onMermaidTabClick,
onAiRepairClick,
onDeleteMessage,
onInsertMessage,
onRetry,
renderWarning,
}: {
chatId: string;
messages: TChat.ChatMessage[];
currentPrompt: string;
onPromptChange: (prompt: string) => void;
onSendMessage: (message: string) => void;
isGenerating: boolean;
rateLimits?: {
rateLimit: number;
rateLimitRemaining: number;
} | null;
onViewAsMermaid?: () => void;
generatedResponse?: string | null;
placeholder: {
title: string;
description: string;
hint: string;
};
onAbort?: () => void;
onMermaidTabClick?: (message: TChat.ChatMessage) => void;
onAiRepairClick?: (message: TChat.ChatMessage) => void;
onDeleteMessage?: (messageId: string) => void;
onInsertMessage?: (message: TChat.ChatMessage) => void;
onRetry?: (message: TChat.ChatMessage) => void;
renderWarning?: TTTDDialog.renderWarning;
}) => {
const messagesEndRef = useRef<HTMLDivElement>(null);
const textareaRef = useRef<HTMLTextAreaElement>(null);
useEffect(() => {
messagesEndRef.current?.scrollIntoView();
}, [messages]);
useEffect(() => {
if (textareaRef.current) {
textareaRef.current.focus();
}
}, [chatId]);
const handleInputChange = (event: React.ChangeEvent<HTMLTextAreaElement>) => {
const value = event.target.value;
onPromptChange(value);
};
const handleSubmit = () => {
if (isGenerating && onAbort) {
onAbort();
return;
}
const trimmedPrompt = currentPrompt.trim();
if (!trimmedPrompt) {
return;
}
onSendMessage(trimmedPrompt);
onPromptChange("");
};
const handleKeyDown = (event: React.KeyboardEvent<HTMLTextAreaElement>) => {
if (event.key === KEYS.ENTER && !event.shiftKey) {
event.preventDefault();
handleSubmit();
}
};
const canSend =
currentPrompt.trim().length > 3 &&
!isGenerating &&
(rateLimits?.rateLimitRemaining ?? 1) > 0;
const canStop = isGenerating && !!onAbort;
const onInput: FormEventHandler<HTMLTextAreaElement> = (ev) => {
const target = ev.target as HTMLTextAreaElement;
target.style.height = "auto";
target.style.height = `${Math.min(target.scrollHeight, 120)}px`;
};
return (
<div className="chat-interface">
<div className="chat-interface__messages">
{messages.length === 0 ? (
<div className="chat-interface__empty-state">
<div className="chat-interface__empty-state-content">
<h3>{placeholder.title}</h3>
<p>{placeholder.description}</p>
<p>{placeholder.hint}</p>
</div>
</div>
) : (
messages.map((message, index) => (
<ChatMessage
key={message.id}
message={message}
onMermaidTabClick={onMermaidTabClick}
onAiRepairClick={onAiRepairClick}
onDeleteMessage={onDeleteMessage}
onInsertMessage={onInsertMessage}
onRetry={onRetry}
rateLimitRemaining={rateLimits?.rateLimitRemaining}
isLastMessage={index === messages.length - 1}
renderWarning={renderWarning}
/>
))
)}
<div ref={messagesEndRef} />
</div>
<div className="chat-interface__input-container">
<div className="chat-interface__input-outer">
<div className="chat-interface__input-wrapper">
<textarea
ref={textareaRef}
autoFocus
className="chat-interface__input"
value={currentPrompt}
onChange={handleInputChange}
onKeyDown={handleKeyDown}
placeholder={
rateLimits?.rateLimitRemaining === 0
? t("chat.rateLimit.messageLimitInputPlaceholder")
: messages.length > 0
? t("chat.inputPlaceholderWithMessages")
: t("chat.inputPlaceholder", { shortcut: "Shift + Enter" })
}
disabled={isGenerating || rateLimits?.rateLimitRemaining === 0}
rows={1}
cols={30}
onInput={onInput}
/>
<button
className="chat-interface__send-button"
onClick={handleSubmit}
disabled={!canSend && !canStop}
type="button"
>
<InlineIcon
size="1.5em"
icon={isGenerating ? StopIcon : ArrowRightIcon}
/>
</button>
</div>
</div>
</div>
</div>
);
};
@@ -0,0 +1,212 @@
import clsx from "clsx";
import React, { useState, useEffect } from "react";
import { t } from "../../../i18n";
import { FilledButton } from "../../FilledButton";
import { TrashIcon, codeIcon, stackPushIcon, RetryIcon } from "../../icons";
import type { TChat, TTTDDialog } from "../types";
export const ChatMessage: React.FC<{
message: TChat.ChatMessage;
onMermaidTabClick?: (message: TChat.ChatMessage) => void;
onAiRepairClick?: (message: TChat.ChatMessage) => void;
onDeleteMessage?: (messageId: string) => void;
onInsertMessage?: (message: TChat.ChatMessage) => void;
onRetry?: (message: TChat.ChatMessage) => void;
rateLimitRemaining?: number;
isLastMessage?: boolean;
renderWarning?: TTTDDialog.renderWarning;
}> = ({
message,
onMermaidTabClick,
onAiRepairClick,
onDeleteMessage,
onInsertMessage,
onRetry,
rateLimitRemaining,
isLastMessage,
renderWarning,
}) => {
const [canRetry, setCanRetry] = useState(false);
useEffect(() => {
if (!message.error || !isLastMessage) {
return;
}
if (message.error && !message.lastAttemptAt) {
setCanRetry(true);
return;
}
const timeSinceLastAttempt = Date.now() - message.lastAttemptAt!;
const remainingTime = Math.max(0, 5000 - timeSinceLastAttempt);
if (remainingTime === 0) {
setCanRetry(true);
return;
}
setCanRetry(false);
const timer = setTimeout(() => {
setCanRetry(true);
}, remainingTime);
return () => clearTimeout(timer);
}, [message.error, message.lastAttemptAt, isLastMessage]);
const formatTime = (date: Date) => {
return date.toLocaleTimeString([], { hour: "2-digit", minute: "2-digit" });
};
if (message.type === "warning") {
const customOverride = renderWarning?.(message);
return (
<div className="chat-message chat-message--system">
<div className="chat-message__content">
<div className="chat-message__header">
<span className="chat-message__role">{t("chat.role.system")}</span>
<span className="chat-message__timestamp">
{formatTime(message.timestamp)}
</span>
</div>
<div className="chat-message__body">
<div className="chat-message__text">
{customOverride ? (
customOverride
) : message.warningType === "messageLimitExceeded" ? (
<>
{t("chat.rateLimit.messageLimit")}
<div style={{ marginTop: "10px" }}>
<FilledButton
onClick={() => {
window.open(
`${
import.meta.env.VITE_APP_PLUS_LP
}/plus?utm_source=excalidraw&utm_medium=app&utm_content=ttdChatBanner#excalidraw-redirect`,
"_blank",
"noopener",
);
}}
>
{t("chat.upsellBtnLabel")}
</FilledButton>
</div>
</>
) : (
t("chat.rateLimit.generalRateLimit")
)}
</div>
</div>
</div>
</div>
);
}
return (
<div className={`chat-message chat-message--${message.type}`}>
<div className="chat-message__content">
<div className="chat-message__header">
<span className="chat-message__role">
{message.type === "user"
? t("chat.role.user")
: t("chat.role.assistant")}
</span>
<span className="chat-message__timestamp">
{formatTime(message.timestamp)}
</span>
</div>
<div className="chat-message__body">
{message.error ? (
<div className="chat-message__error">
{message.content}
<div>{message.error}</div>
{message.errorType === "parse" && (
<>
<p>{t("chat.errors.invalidDiagram")}</p>
<div className="chat-message__error-actions">
{onMermaidTabClick && (
<button
className="chat-message__error-link"
onClick={() => onMermaidTabClick(message)}
type="button"
>
{t("chat.errors.fixInMermaid")}
</button>
)}
{onAiRepairClick && (
<button
className="chat-message__error-link"
onClick={() => onAiRepairClick(message)}
disabled={rateLimitRemaining === 0}
type="button"
>
{t("chat.errors.aiRepair")}
</button>
)}
</div>
</>
)}
</div>
) : (
<div className="chat-message__text">
{message.content}
{message.isGenerating && (
<span className="chat-message__cursor"></span>
)}
</div>
)}
</div>
</div>
{message.type === "assistant" && !message.isGenerating && (
<div className="chat-message__actions">
{!message.error && onInsertMessage && (
<button
className="chat-message__action"
onClick={() => onInsertMessage(message)}
type="button"
aria-label={t("chat.insert")}
title={t("chat.insert")}
>
{stackPushIcon}
</button>
)}
{onMermaidTabClick && message.content && (
<button
className="chat-message__action"
onClick={() => onMermaidTabClick(message)}
type="button"
aria-label={t("chat.viewAsMermaid")}
title={t("chat.viewAsMermaid")}
>
{codeIcon}
</button>
)}
{onDeleteMessage && message.errorType !== "network" && (
<button
className="chat-message__action chat-message__action--danger"
onClick={() => onDeleteMessage(message.id)}
type="button"
aria-label={t("chat.deleteMessage")}
title={t("chat.deleteMessage")}
>
{TrashIcon}
</button>
)}
{message.errorType === "network" && onRetry && isLastMessage && (
<button
className={clsx("chat-message__action", { invisible: !canRetry })}
onClick={() => onRetry(message)}
type="button"
aria-label={t("chat.retry")}
title={t("chat.retry")}
>
{RetryIcon}
</button>
)}
</div>
)}
</div>
);
};
@@ -0,0 +1,163 @@
import { t } from "../../../i18n";
import { ArrowRightIcon } from "../../icons";
import { InlineIcon } from "../../InlineIcon";
import { TTDDialogPanel } from "../TTDDialogPanel";
import { useAtom } from "../../../editor-jotai";
import { rateLimitsAtom } from "../TTDContext";
import { ChatHistoryMenu } from "./ChatHistoryMenu";
import { ChatInterface } from ".";
import type { TTDPanelAction } from "../TTDDialogPanel";
import type { SavedChat, TChat, TTTDDialog } from "../types";
export const TTDChatPanel = ({
chatId,
messages,
currentPrompt,
onPromptChange,
onSendMessage,
isGenerating,
generatedResponse,
isMenuOpen,
onMenuToggle,
onMenuClose,
onNewChat,
onRestoreChat,
onDeleteChat,
savedChats,
activeSessionId,
onAbort,
onMermaidTabClick,
onAiRepairClick,
onDeleteMessage,
onInsertMessage,
onRetry,
onViewAsMermaid,
renderWarning,
}: {
chatId: string;
messages: TChat.ChatMessage[];
currentPrompt: string;
onPromptChange: (prompt: string) => void;
onSendMessage: (message: string, isRepairFlow?: boolean) => void;
isGenerating: boolean;
generatedResponse: string | null | undefined;
isMenuOpen: boolean;
onMenuToggle: () => void;
onMenuClose: () => void;
onNewChat: () => void;
onRestoreChat: (chat: SavedChat) => void;
onDeleteChat: (chatId: string, event: React.MouseEvent) => void;
savedChats: SavedChat[];
activeSessionId: string;
onAbort: () => void;
onMermaidTabClick: (message: TChat.ChatMessage) => void;
onAiRepairClick: (message: TChat.ChatMessage) => void;
onDeleteMessage: (messageId: string) => void;
onInsertMessage: (message: TChat.ChatMessage) => void;
onRetry?: (message: TChat.ChatMessage) => void;
onViewAsMermaid: () => void;
renderWarning?: TTTDDialog.renderWarning;
}) => {
const [rateLimits] = useAtom(rateLimitsAtom);
const getPanelActions = () => {
const actions: TTDPanelAction[] = [];
if (rateLimits) {
actions.push({
label: t("chat.rateLimitRemaining", {
count: rateLimits.rateLimitRemaining,
}),
variant: "rateLimit",
className:
rateLimits.rateLimitRemaining < 5
? "ttd-dialog-panel__rate-limit--danger"
: "",
});
}
if (generatedResponse) {
actions.push({
action: onViewAsMermaid,
label: t("chat.viewAsMermaid"),
icon: <InlineIcon icon={ArrowRightIcon} />,
variant: "link",
});
}
return actions;
};
const actions = getPanelActions();
const getPanelActionFlexProp = () => {
if (actions.length === 2) {
return "space-between";
}
if (actions.length === 1 && actions[0].variant === "rateLimit") {
return "flex-start";
}
return "flex-end";
};
return (
<TTDDialogPanel
label={
<div className="ttd-dialog-panel__label-wrapper">
<div className="ttd-dialog-panel__label-group"></div>
<div className="ttd-dialog-panel__header-right">
<ChatHistoryMenu
isNewChatBtnVisible={!!messages.length}
isOpen={isMenuOpen}
onToggle={onMenuToggle}
onClose={onMenuClose}
onNewChat={onNewChat}
onRestoreChat={onRestoreChat}
onDeleteChat={onDeleteChat}
savedChats={savedChats}
activeSessionId={activeSessionId}
disabled={isGenerating}
/>
</div>
</div>
}
className="ttd-dialog-chat-panel"
panelActionJustifyContent={getPanelActionFlexProp()}
panelActions={actions}
>
<ChatInterface
chatId={chatId}
messages={messages}
currentPrompt={currentPrompt}
onPromptChange={onPromptChange}
onSendMessage={onSendMessage}
isGenerating={isGenerating}
generatedResponse={generatedResponse}
onAbort={onAbort}
onMermaidTabClick={onMermaidTabClick}
onAiRepairClick={onAiRepairClick}
onDeleteMessage={onDeleteMessage}
onInsertMessage={onInsertMessage}
onRetry={onRetry}
rateLimits={rateLimits}
placeholder={{
title: t("chat.placeholder.title"),
description: t("chat.placeholder.description"),
hint: t("chat.placeholder.hint"),
}}
renderWarning={renderWarning}
/>
</TTDDialogPanel>
);
};
@@ -0,0 +1,3 @@
export { ChatInterface } from "./ChatInterface";
export { ChatMessage } from "./ChatMessage";
export { useChatAgent } from "./useChatAgent";
@@ -0,0 +1,76 @@
import { useAtom } from "../../../editor-jotai";
import { chatHistoryAtom } from "../../TTDDialog/TTDContext";
import {
addMessages,
updateAssistantContent,
} from "../../TTDDialog/utils/chat";
export const useChatAgent = () => {
const [chatHistory, setChatHistory] = useAtom(chatHistoryAtom);
const addUserMessage = (content: string) => {
setChatHistory((prev) =>
addMessages(prev, [
{
type: "user",
content,
},
]),
);
};
const addAssistantMessage = () => {
setChatHistory((prev) =>
addMessages(prev, [
{
type: "assistant",
content: "",
isGenerating: true,
},
]),
);
};
const setLastRetryAttempt = () => {
setChatHistory((prev) =>
updateAssistantContent(prev, {
lastAttemptAt: Date.now(),
}),
);
};
const setAssistantError = (
errorMessage: string,
errorType: "parse" | "network" | "other" = "other",
errorDetails?: Error | unknown,
) => {
const serializedErrorDetails = errorDetails
? JSON.stringify({
name: errorDetails instanceof Error ? errorDetails.name : "Error",
message:
errorDetails instanceof Error
? errorDetails.message
: String(errorDetails),
stack: errorDetails instanceof Error ? errorDetails.stack : undefined,
})
: undefined;
setChatHistory((prev) =>
updateAssistantContent(prev, {
isGenerating: false,
error: errorMessage,
errorType,
errorDetails: serializedErrorDetails,
}),
);
};
return {
addUserMessage,
addAssistantMessage,
setAssistantError,
chatHistory,
setChatHistory,
setLastRetryAttempt,
};
};
@@ -10,6 +10,8 @@ import { EditorLocalStorage } from "../../data/EditorLocalStorage";
import { t } from "../../i18n";
import Trans from "../Trans";
import { useUIAppState } from "../../context/ui-appState";
import { TTDDialogInput } from "./TTDDialogInput";
import { TTDDialogOutput } from "./TTDDialogOutput";
import { TTDDialogPanel } from "./TTDDialogPanel";
@@ -19,12 +21,13 @@ import {
convertMermaidToExcalidraw,
insertToEditor,
saveMermaidDataToStorage,
resetPreview,
} from "./common";
import "./MermaidToExcalidraw.scss";
import type { BinaryFiles } from "../../types";
import type { MermaidToExcalidrawLibProps } from "./common";
import type { MermaidToExcalidrawLibProps } from "./types";
const MERMAID_EXAMPLE =
"flowchart TD\n A[Christmas] -->|Get money| B(Go shopping)\n B --> C{Let me think}\n C -->|One| D[Laptop]\n C -->|Two| E[iPhone]\n C -->|Three| F[Car]";
@@ -33,8 +36,10 @@ const debouncedSaveMermaidDefinition = debounce(saveMermaidDataToStorage, 300);
const MermaidToExcalidraw = ({
mermaidToExcalidrawLib,
isActive,
}: {
mermaidToExcalidrawLib: MermaidToExcalidrawLibProps;
isActive?: boolean;
}) => {
const [text, setText] = useState(
() =>
@@ -51,22 +56,40 @@ const MermaidToExcalidraw = ({
}>({ elements: [], files: null });
const app = useApp();
const { theme } = useUIAppState();
useEffect(() => {
convertMermaidToExcalidraw({
canvasRef,
data,
mermaidToExcalidrawLib,
setError,
mermaidDefinition: deferredText,
}).catch((err) => {
if (isDevEnv()) {
console.error("Failed to parse mermaid definition", err);
}
});
const doRender = async () => {
try {
if (!deferredText) {
resetPreview({ canvasRef, setError });
return;
}
const result = await convertMermaidToExcalidraw({
canvasRef,
data,
mermaidToExcalidrawLib,
setError,
mermaidDefinition: deferredText,
theme,
});
debouncedSaveMermaidDefinition(deferredText);
}, [deferredText, mermaidToExcalidrawLib]);
if (!result.success) {
const err = result.error ?? new Error("Invalid mermaid definition");
setError(err);
}
} catch (err) {
if (isDevEnv()) {
console.error("Failed to parse mermaid definition", err);
}
}
};
if (isActive) {
doRender();
debouncedSaveMermaidDefinition(deferredText);
}
}, [deferredText, mermaidToExcalidrawLib, isActive, theme]);
useEffect(
() => () => {
@@ -103,10 +126,10 @@ const MermaidToExcalidraw = ({
/>
</div>
<TTDDialogPanels>
<TTDDialogPanel label={t("mermaid.syntax")}>
<TTDDialogPanel>
<TTDDialogInput
input={text}
placeholder={"Write Mermaid diagram defintion here..."}
placeholder={t("mermaid.inputPlaceholder")}
onChange={(event) => setText(event.target.value)}
onKeyboardSubmit={() => {
onInsertToEditor();
@@ -114,14 +137,16 @@ const MermaidToExcalidraw = ({
/>
</TTDDialogPanel>
<TTDDialogPanel
label={t("mermaid.preview")}
panelAction={{
action: () => {
onInsertToEditor();
panelActions={[
{
action: () => {
onInsertToEditor();
},
label: t("mermaid.button"),
icon: ArrowRightIcon,
variant: "button",
},
label: t("mermaid.button"),
icon: ArrowRightIcon,
}}
]}
renderSubmitShortcut={() => <TTDDialogSubmitShortcut />}
>
<TTDDialogOutput
@@ -0,0 +1,17 @@
import { randomId } from "@excalidraw/common";
import { atom } from "../../editor-jotai";
import type { RateLimits, TChat } from "./types";
export const rateLimitsAtom = atom<RateLimits | null>(null);
export const showPreviewAtom = atom<boolean>(false);
export const errorAtom = atom<Error | null>(null);
export const chatHistoryAtom = atom<TChat.ChatHistory>({
id: randomId(),
messages: [],
currentPrompt: "",
});
@@ -1,6 +1,8 @@
@use "../../css/variables.module" as *;
@use "../../css/variables.module.scss" as *;
@use "./Chat/Chat.scss";
$verticalBreakpoint: 861px;
$fullScreenModalBreakpoint: 600px;
.excalidraw {
.Modal.Dialog.ttd-dialog {
@@ -16,21 +18,26 @@ $verticalBreakpoint: 861px;
display: flex;
flex-direction: column;
flex: 1 1 auto;
box-shadow: none;
}
.Modal__content {
height: auto;
max-height: 100%;
min-height: 95vh;
height: 100%;
@media screen and (min-width: $verticalBreakpoint) {
max-height: 750px;
max-height: min(950px, calc(100vh - 4rem));
height: 100%;
min-height: unset;
}
}
.Dialog__content {
flex: 1 1 auto;
@media screen and (max-width: $verticalBreakpoint) {
margin-top: 0 !important;
}
}
}
@@ -38,7 +45,7 @@ $verticalBreakpoint: 861px;
font-size: 15px;
font-style: italic;
font-weight: 500;
margin-bottom: 1.5rem;
margin: 0.5rem 0 1.5rem 0;
}
.ttd-dialog-tabs-root {
@@ -63,12 +70,33 @@ $verticalBreakpoint: 861px;
&[data-state="active"] {
border-bottom: 2px solid var(--color-primary);
}
&__content {
display: flex;
align-items: center;
}
&__badge {
display: flex;
align-items: center;
justify-content: center;
padding: 1px 6px;
margin-left: 10px;
font-size: 10px;
border-radius: 12px;
background: var(--color-promo);
color: var(--color-surface-lowest);
}
}
.ttd-dialog-triggers {
border-bottom: 1px solid var(--color-surface-high);
margin-bottom: 1.5rem;
margin-bottom: 1rem;
padding-inline: 2.5rem;
@media screen and (max-width: $verticalBreakpoint) {
margin-bottom: 1rem;
}
}
.ttd-dialog-content {
@@ -76,10 +104,102 @@ $verticalBreakpoint: 861px;
height: 100%;
display: flex;
flex-direction: column;
overflow: visible;
outline: none;
&[hidden] {
display: none;
}
@media screen and (max-width: $verticalBreakpoint) {
padding-inline: 1rem;
flex-grow: 1;
}
}
.ttd-dialog-panel__header .dropdown-menu {
z-index: 2;
margin: 0;
right: 0;
left: auto;
min-width: 280px;
.dropdown-menu-container.dropdown-menu-container {
padding-inline: 0.5rem !important;
padding-top: 0.5rem;
padding-bottom: 0.5rem;
max-height: min(400px, 70vh);
height: fit-content;
overflow-y: auto;
box-shadow: var(--shadow-island);
border-radius: var(--border-radius-lg);
background-color: var(--island-bg-color-alt);
}
}
.ttd-dialog-layout {
display: grid;
grid-template-columns: 1fr 1fr;
height: 100%;
&--split {
gap: 2rem;
min-width: 0;
@media screen and (max-width: $verticalBreakpoint) {
grid-template-columns: 1fr;
grid-template-rows: 1fr auto;
grid-row-gap: 0;
}
.ttd-dialog-chat-panel {
min-width: 0;
@media screen and (max-width: $verticalBreakpoint) {
width: 100%;
flex: 0 0 auto;
height: auto;
min-height: 250px;
}
}
.ttd-dialog-preview-panel {
min-width: 0;
overflow: hidden;
@media screen and (max-width: $verticalBreakpoint) {
width: 100%;
flex: 0 0 auto;
max-width: 100%;
min-height: 280px;
height: unset;
}
}
}
&--chat-only {
grid-template-columns: 1fr;
.invisible {
display: none;
}
.ttd-dialog-chat-panel {
@media screen and (max-width: $verticalBreakpoint) {
height: unset;
}
}
@media screen and (max-width: $verticalBreakpoint) {
.chat-interface {
max-height: 100%;
&__messages {
max-height: unset;
}
}
}
}
}
.ttd-dialog-input {
@@ -101,12 +221,15 @@ $verticalBreakpoint: 861px;
.ttd-dialog-output-wrapper {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 0.85rem;
box-sizing: border-box;
flex-grow: 1;
position: relative;
overflow: hidden;
max-width: 100%;
max-height: 100%;
background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYDCgBDAm9BGDWAAJyRCgLaBCAAgXwixzAS0pgAAAABJRU5ErkJggg==")
left center;
@@ -115,16 +238,29 @@ $verticalBreakpoint: 861px;
height: 400px;
width: auto;
max-width: 100%;
@media screen and (min-width: $verticalBreakpoint) {
width: 100%;
// acts as min-height
@media screen and (max-width: $fullScreenModalBreakpoint) {
height: 200px;
}
@media screen and (max-width: $verticalBreakpoint) {
width: 100%;
max-width: 100%;
}
&--error {
background: none;
border: 1px solid var(--dialog-border-color);
border-radius: var(--border-radius-lg);
}
canvas {
max-width: 100%;
max-height: 100%;
width: auto;
height: auto;
object-fit: contain;
}
}
@@ -135,28 +271,74 @@ $verticalBreakpoint: 861px;
align-items: center;
justify-content: center;
flex-grow: 1;
position: relative;
user-select: none;
&.invisible {
visibility: hidden;
pointer-events: none;
}
}
.ttd-dialog-output-canvas-content {
display: flex;
width: 100%;
height: 100%;
align-items: center;
justify-content: center;
flex-grow: 1;
canvas {
image-rendering: auto;
}
}
.ttd-dialog-output-error {
color: red;
font-weight: 700;
font-size: 30px;
word-break: break-word;
overflow: auto;
max-height: 100%;
height: 100%;
width: 100%;
text-align: center;
position: absolute;
z-index: 10;
display: flex;
align-items: center;
justify-content: center;
padding: 2rem;
p {
font-weight: 500;
font-family: Cascadia;
.ttd-dialog-output-error-content {
display: flex;
flex-direction: column;
align-items: center;
gap: 1rem;
padding: 2.5rem 2rem;
background: var(--color-surface-primary);
}
.ttd-dialog-output-error-icon {
color: var(--color-danger);
display: flex;
align-items: center;
justify-content: center;
svg {
width: 52px;
height: 52px;
stroke-width: 1.5;
}
}
.ttd-dialog-output-error-title {
font-size: 1.25rem;
font-weight: 600;
color: var(--color-danger);
text-align: center;
margin-top: 0.25rem;
}
.ttd-dialog-output-error-message {
text-align: left;
font-weight: 400;
color: var(--color-gray-50);
word-break: break-word;
white-space: pre-wrap;
font-size: 0.875rem;
padding: 0 10px;
max-width: 100%;
font-family: monospace;
}
}
@@ -166,37 +348,86 @@ $verticalBreakpoint: 861px;
@media screen and (min-width: $verticalBreakpoint) {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 4rem;
gap: 2rem;
}
}
.ttd-dialog-chat-panel,
.ttd-dialog-preview-panel {
display: flex;
flex-direction: column;
width: 100%;
height: 100%;
min-width: 0;
align-items: stretch;
}
.ttd-dialog-panel {
display: flex;
flex-direction: column;
width: 100%;
height: 100%;
@media screen and (max-width: $verticalBreakpoint) {
height: 50%;
}
&__header {
display: flex;
margin: 0px 4px 4px 4px;
align-items: center;
gap: 1rem;
gap: 0.3rem;
height: 36px;
margin-top: 0.2rem;
margin-bottom: 0.5rem;
flex-shrink: 0;
label {
font-size: 14px;
line-height: 22px;
font-style: normal;
font-weight: 600;
}
}
&:first-child {
.ttd-dialog-panel-button-container:not(.invisible) {
margin-bottom: 4rem;
&__label-wrapper {
display: flex;
justify-content: space-between;
align-items: center;
width: 100%;
}
&__label-group {
display: flex;
gap: 5px;
}
&__header-right {
display: flex;
align-items: center;
gap: 0.75rem;
}
&__rate-limit {
font-size: 0.75rem;
font-weight: 500;
white-space: nowrap;
&--danger {
color: var(--color-danger);
}
}
@media screen and (min-width: $verticalBreakpoint) {
.ttd-dialog-panel-button-container:not(.invisible) {
margin-bottom: 0.5rem !important;
&__menu-wrapper {
position: relative;
.ttd-dialog-menu-trigger {
height: 40px;
width: 40px;
}
.dropdown-menu {
margin-top: 0.375rem;
right: 0;
}
}
@@ -213,23 +444,28 @@ $verticalBreakpoint: 861px;
@media screen and (max-width: $verticalBreakpoint) {
width: auto;
height: 10rem;
}
}
}
.ttd-dialog-panel-button-container {
display: flex;
align-items: center;
flex-grow: 0;
height: 40px;
flex-shrink: 0;
margin-top: 1rem;
margin-bottom: 0.5rem;
&.invisible {
.ttd-dialog-panel-button {
display: none;
@media screen and (max-width: $verticalBreakpoint) {
margin-top: 0.5rem;
}
@media screen and (min-width: $verticalBreakpoint) {
display: block;
visibility: hidden;
}
&.invisible {
visibility: hidden;
@media screen and (max-width: $verticalBreakpoint) {
display: none;
}
}
}
@@ -314,4 +550,109 @@ $verticalBreakpoint: 861px;
border-radius: 4px;
}
}
.ttd-dialog-panel-action-link {
display: flex;
align-items: center;
gap: 0.25rem;
background: none;
border: none;
color: var(--color-primary);
font-weight: 500;
font-family: inherit;
height: 40px;
&__icon {
display: inline-flex;
align-items: center;
svg {
width: 12px;
height: 12px;
}
}
@media screen and (max-width: $verticalBreakpoint) {
height: unset;
}
}
.dropdown-menu-item-custom.ttd-chat-menu-item {
display: flex;
width: unset;
align-items: center;
justify-content: space-between;
padding: 0.25rem 0.5rem;
cursor: pointer;
position: relative;
border: 1px solid transparent;
border-radius: var(--border-radius-md);
margin-top: 1px;
&:hover {
background-color: var(--button-hover-bg);
}
&:active {
border: 1px solid var(--button-active-border);
}
&--active {
background-color: var(--color-surface-primary-container);
}
.ttd-chat-menu-item__title {
flex: 1;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
&:hover {
.ttd-chat-menu-item__delete {
visibility: visible;
}
}
.ttd-chat-menu-item__delete {
border: none;
padding: 0.25rem;
cursor: pointer;
flex-shrink: 0;
margin-left: 0.5rem;
display: flex;
align-items: center;
justify-content: center;
background: transparent;
visibility: hidden;
&:hover {
color: var(--color-danger);
}
@at-root .excalidraw.theme--dark#{&} {
svg {
color: var(--color-on-surface);
}
&:hover svg {
color: var(--color-danger);
}
}
svg {
width: 16px;
height: 16px;
}
}
}
.ttd-dialog-preview-panel--hidden {
display: none;
}
.ttd-chat-history-menu {
display: flex;
gap: 1rem;
align-items: center;
}
}
@@ -1,71 +1,27 @@
import { useEffect, useRef, useState } from "react";
import { useEffect, useState } from "react";
import { isFiniteNumber } from "@excalidraw/math";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import { trackEvent } from "../../analytics";
import { useUIAppState } from "../../context/ui-appState";
import { atom, useAtom } from "../../editor-jotai";
import { t } from "../../i18n";
import { useApp, useExcalidrawSetAppState } from "../App";
import { useApp } from "../App";
import { Dialog } from "../Dialog";
import { InlineIcon } from "../InlineIcon";
import { withInternalFallback } from "../hoc/withInternalFallback";
import { ArrowRightIcon } from "../icons";
import MermaidToExcalidraw from "./MermaidToExcalidraw";
import TextToDiagram from "./TextToDiagram";
import TTDDialogTabs from "./TTDDialogTabs";
import { TTDDialogTabTriggers } from "./TTDDialogTabTriggers";
import { TTDDialogTabTrigger } from "./TTDDialogTabTrigger";
import { TTDDialogTab } from "./TTDDialogTab";
import { TTDDialogInput } from "./TTDDialogInput";
import { TTDDialogOutput } from "./TTDDialogOutput";
import { TTDDialogPanel } from "./TTDDialogPanel";
import { TTDDialogPanels } from "./TTDDialogPanels";
import {
convertMermaidToExcalidraw,
insertToEditor,
saveMermaidDataToStorage,
} from "./common";
import { TTDDialogSubmitShortcut } from "./TTDDialogSubmitShortcut";
import "./TTDDialog.scss";
import type { ChangeEventHandler } from "react";
import type { MermaidToExcalidrawLibProps } from "./common";
import type { BinaryFiles } from "../../types";
const MIN_PROMPT_LENGTH = 3;
const MAX_PROMPT_LENGTH = 1000;
const rateLimitsAtom = atom<{
rateLimit: number;
rateLimitRemaining: number;
} | null>(null);
const ttdGenerationAtom = atom<{
generatedResponse: string | null;
prompt: string | null;
} | null>(null);
type OnTestSubmitRetValue = {
rateLimit?: number | null;
rateLimitRemaining?: number | null;
} & (
| { generatedResponse: string | undefined; error?: null | undefined }
| {
error: Error;
generatedResponse?: null | undefined;
}
);
import type { MermaidToExcalidrawLibProps, TTTDDialog } from "./types";
export const TTDDialog = (
props:
| {
onTextSubmit(value: string): Promise<OnTestSubmitRetValue>;
onTextSubmit: TTTDDialog.onTextSubmit;
renderWarning?: TTTDDialog.renderWarning;
}
| { __fallback: true },
) => {
@@ -81,7 +37,7 @@ export const TTDDialog = (
/**
* Text to diagram (TTD) dialog
*/
export const TTDDialogBase = withInternalFallback(
const TTDDialogBase = withInternalFallback(
"TTDDialogBase",
({
tab,
@@ -90,127 +46,14 @@ export const TTDDialogBase = withInternalFallback(
tab: "text-to-diagram" | "mermaid";
} & (
| {
onTextSubmit(value: string): Promise<OnTestSubmitRetValue>;
onTextSubmit(
props: TTTDDialog.OnTextSubmitProps,
): Promise<TTTDDialog.OnTextSubmitRetValue>;
renderWarning?: TTTDDialog.renderWarning;
}
| { __fallback: true }
)) => {
const app = useApp();
const setAppState = useExcalidrawSetAppState();
const someRandomDivRef = useRef<HTMLDivElement>(null);
const [ttdGeneration, setTtdGeneration] = useAtom(ttdGenerationAtom);
const [text, setText] = useState(ttdGeneration?.prompt ?? "");
const prompt = text.trim();
const handleTextChange: ChangeEventHandler<HTMLTextAreaElement> = (
event,
) => {
setText(event.target.value);
setTtdGeneration((s) => ({
generatedResponse: s?.generatedResponse ?? null,
prompt: event.target.value,
}));
};
const [onTextSubmitInProgess, setOnTextSubmitInProgess] = useState(false);
const [rateLimits, setRateLimits] = useAtom(rateLimitsAtom);
const onGenerate = async () => {
if (
prompt.length > MAX_PROMPT_LENGTH ||
prompt.length < MIN_PROMPT_LENGTH ||
onTextSubmitInProgess ||
rateLimits?.rateLimitRemaining === 0 ||
// means this is not a text-to-diagram dialog (needed for TS only)
"__fallback" in rest
) {
if (prompt.length < MIN_PROMPT_LENGTH) {
setError(
new Error(
`Prompt is too short (min ${MIN_PROMPT_LENGTH} characters)`,
),
);
}
if (prompt.length > MAX_PROMPT_LENGTH) {
setError(
new Error(
`Prompt is too long (max ${MAX_PROMPT_LENGTH} characters)`,
),
);
}
return;
}
try {
setOnTextSubmitInProgess(true);
trackEvent("ai", "generate", "ttd");
const { generatedResponse, error, rateLimit, rateLimitRemaining } =
await rest.onTextSubmit(prompt);
if (typeof generatedResponse === "string") {
setTtdGeneration((s) => ({
generatedResponse,
prompt: s?.prompt ?? null,
}));
}
if (isFiniteNumber(rateLimit) && isFiniteNumber(rateLimitRemaining)) {
setRateLimits({ rateLimit, rateLimitRemaining });
}
if (error) {
setError(error);
return;
}
if (!generatedResponse) {
setError(new Error("Generation failed"));
return;
}
try {
await convertMermaidToExcalidraw({
canvasRef: someRandomDivRef,
data,
mermaidToExcalidrawLib,
setError,
mermaidDefinition: generatedResponse,
});
trackEvent("ai", "mermaid parse success", "ttd");
} catch (error: any) {
console.info(
`%cTTD mermaid render errror: ${error.message}`,
"color: red",
);
console.info(
`>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\nTTD mermaid definition render errror: ${error.message}`,
"color: yellow",
);
trackEvent("ai", "mermaid parse failed", "ttd");
setError(
new Error(
"Generated an invalid diagram :(. You may also try a different prompt.",
),
);
}
} catch (error: any) {
let message: string | undefined = error.message;
if (!message || message === "Failed to fetch") {
message = "Request failed";
}
setError(new Error(message));
} finally {
setOnTextSubmitInProgess(false);
}
};
const refOnGenerate = useRef(onGenerate);
refOnGenerate.current = onGenerate;
const [mermaidToExcalidrawLib, setMermaidToExcalidrawLib] =
useState<MermaidToExcalidrawLibProps>({
@@ -226,20 +69,13 @@ export const TTDDialogBase = withInternalFallback(
fn();
}, [mermaidToExcalidrawLib.api]);
const data = useRef<{
elements: readonly NonDeletedExcalidrawElement[];
files: BinaryFiles | null;
}>({ elements: [], files: null });
const [error, setError] = useState<Error | null>(null);
return (
<Dialog
className="ttd-dialog"
onCloseRequest={() => {
app.setOpenDialog(null);
}}
size={1200}
size={1520}
title={false}
{...rest}
autofocus={false}
@@ -250,150 +86,34 @@ export const TTDDialogBase = withInternalFallback(
) : (
<TTDDialogTabTriggers>
<TTDDialogTabTrigger tab="text-to-diagram">
<div style={{ display: "flex", alignItems: "center" }}>
<div className="ttd-dialog-tab-trigger__content">
{t("labels.textToDiagram")}
<div
style={{
display: "flex",
alignItems: "center",
justifyContent: "center",
padding: "1px 6px",
marginLeft: "10px",
fontSize: 10,
borderRadius: "12px",
background: "var(--color-promo)",
color: "var(--color-surface-lowest)",
}}
>
AI Beta
<div className="ttd-dialog-tab-trigger__badge">
{t("chat.aiBeta")}
</div>
</div>
</TTDDialogTabTrigger>
<TTDDialogTabTrigger tab="mermaid">Mermaid</TTDDialogTabTrigger>
<TTDDialogTabTrigger tab="mermaid">
{t("mermaid.label")}
</TTDDialogTabTrigger>
</TTDDialogTabTriggers>
)}
{!("__fallback" in rest) && (
<TTDDialogTab className="ttd-dialog-content" tab="text-to-diagram">
<TextToDiagram
mermaidToExcalidrawLib={mermaidToExcalidrawLib}
onTextSubmit={rest.onTextSubmit}
renderWarning={rest.renderWarning}
/>
</TTDDialogTab>
)}
<TTDDialogTab className="ttd-dialog-content" tab="mermaid">
<MermaidToExcalidraw
mermaidToExcalidrawLib={mermaidToExcalidrawLib}
isActive={tab === "mermaid"}
/>
</TTDDialogTab>
{!("__fallback" in rest) && (
<TTDDialogTab className="ttd-dialog-content" tab="text-to-diagram">
<div className="ttd-dialog-desc">
Currently we use Mermaid as a middle step, so you'll get best
results if you describe a diagram, workflow, flow chart, and
similar.
</div>
<TTDDialogPanels>
<TTDDialogPanel
label={t("labels.prompt")}
panelAction={{
action: onGenerate,
label: "Generate",
icon: ArrowRightIcon,
}}
onTextSubmitInProgess={onTextSubmitInProgess}
panelActionDisabled={
prompt.length > MAX_PROMPT_LENGTH ||
rateLimits?.rateLimitRemaining === 0
}
renderTopRight={() => {
if (!rateLimits) {
return null;
}
return (
<div
className="ttd-dialog-rate-limit"
style={{
fontSize: 12,
marginLeft: "auto",
color:
rateLimits.rateLimitRemaining === 0
? "var(--color-danger)"
: undefined,
}}
>
{rateLimits.rateLimitRemaining} requests left today
</div>
);
}}
renderSubmitShortcut={() => <TTDDialogSubmitShortcut />}
renderBottomRight={() => {
if (typeof ttdGeneration?.generatedResponse === "string") {
return (
<div
className="excalidraw-link"
style={{ marginLeft: "auto", fontSize: 14 }}
onClick={() => {
if (
typeof ttdGeneration?.generatedResponse ===
"string"
) {
saveMermaidDataToStorage(
ttdGeneration.generatedResponse,
);
setAppState({
openDialog: { name: "ttd", tab: "mermaid" },
});
}
}}
>
View as Mermaid
<InlineIcon icon={ArrowRightIcon} />
</div>
);
}
const ratio = prompt.length / MAX_PROMPT_LENGTH;
if (ratio > 0.8) {
return (
<div
style={{
marginLeft: "auto",
fontSize: 12,
fontFamily: "monospace",
color:
ratio > 1 ? "var(--color-danger)" : undefined,
}}
>
Length: {prompt.length}/{MAX_PROMPT_LENGTH}
</div>
);
}
return null;
}}
>
<TTDDialogInput
onChange={handleTextChange}
input={text}
placeholder={"Describe what you want to see..."}
onKeyboardSubmit={() => {
refOnGenerate.current();
}}
/>
</TTDDialogPanel>
<TTDDialogPanel
label="Preview"
panelAction={{
action: () => {
console.info("Panel action clicked");
insertToEditor({ app, data });
},
label: "Insert",
icon: ArrowRightIcon,
}}
>
<TTDDialogOutput
canvasRef={someRandomDivRef}
error={error}
loaded={mermaidToExcalidrawLib.loaded}
/>
</TTDDialogPanel>
</TTDDialogPanels>
</TTDDialogTab>
)}
</TTDDialogTabs>
</Dialog>
);
@@ -1,36 +1,56 @@
import Spinner from "../Spinner";
import clsx from "clsx";
const ErrorComp = ({ error }: { error: string }) => {
return (
<div
data-testid="ttd-dialog-output-error"
className="ttd-dialog-output-error"
>
Error! <p>{error}</p>
</div>
);
};
import Spinner from "../Spinner";
import { t } from "../../i18n";
import { alertTriangleIcon } from "../icons";
interface TTDDialogOutputProps {
error: Error | null;
canvasRef: React.RefObject<HTMLDivElement | null>;
loaded: boolean;
hideErrorDetails?: boolean;
}
export const TTDDialogOutput = ({
error,
canvasRef,
loaded,
hideErrorDetails,
}: TTDDialogOutputProps) => {
return (
<div className="ttd-dialog-output-wrapper">
{error && <ErrorComp error={error.message} />}
<div
className={`ttd-dialog-output-wrapper ${
error ? "ttd-dialog-output-wrapper--error" : ""
}`}
>
{error && (
<div
key="error"
data-testid="ttd-dialog-output-error"
className="ttd-dialog-output-error"
>
<div className="ttd-dialog-output-error-content">
<div className="ttd-dialog-output-error-icon">
{alertTriangleIcon}
</div>
<div className="ttd-dialog-output-error-title">
{t("ttd.error")}
</div>
<div className="ttd-dialog-output-error-message">
{hideErrorDetails ? t("ttd.errorMermaidSyntax") : error.message}
</div>
</div>
</div>
)}
{loaded ? (
<div
ref={canvasRef}
style={{ opacity: error ? "0.15" : 1 }}
className="ttd-dialog-output-canvas-container"
/>
key="canvas"
className={clsx("ttd-dialog-output-canvas-container", {
invisible: !!error,
})}
>
<div ref={canvasRef} className="ttd-dialog-output-canvas-content" />
</div>
) : (
<Spinner size="2rem" />
)}
@@ -1,53 +1,76 @@
import clsx from "clsx";
import { Fragment } from "react";
import { Button } from "../Button";
import Spinner from "../Spinner";
import type { ReactNode } from "react";
interface TTDDialogPanelProps {
export type TTDPanelAction = {
label: string;
action?: () => void;
icon?: ReactNode;
variant: "button" | "link" | "rateLimit";
disabled?: boolean;
className?: string;
};
interface TTDDialogPanelProps {
label?: string | ReactNode;
children: ReactNode;
panelAction?: {
label: string;
action: () => void;
icon?: ReactNode;
};
panelActionDisabled?: boolean;
panelActions?: TTDPanelAction[];
onTextSubmitInProgess?: boolean;
renderTopRight?: () => ReactNode;
renderSubmitShortcut?: () => ReactNode;
renderBottomRight?: () => ReactNode;
className?: string;
panelActionJustifyContent?:
| "flex-start"
| "flex-end"
| "center"
| "space-between"
| "space-around"
| "space-evenly";
}
export const TTDDialogPanel = ({
label,
children,
panelAction,
panelActionDisabled = false,
panelActions = [],
onTextSubmitInProgess,
renderTopRight,
renderSubmitShortcut,
renderBottomRight,
className,
panelActionJustifyContent = "flex-start",
}: TTDDialogPanelProps) => {
return (
<div className="ttd-dialog-panel">
<div className="ttd-dialog-panel__header">
<label>{label}</label>
{renderTopRight?.()}
</div>
const renderPanelAction = (panelAction: TTDPanelAction) => {
if (panelAction?.variant === "link") {
return (
<button
className={clsx(
"ttd-dialog-panel-action-link",
panelAction.className,
)}
onClick={panelAction.action}
disabled={panelAction?.disabled || onTextSubmitInProgess}
type="button"
>
{panelAction.label}
{panelAction.icon && (
<span className="ttd-dialog-panel-action-link__icon">
{panelAction.icon}
</span>
)}
</button>
);
}
{children}
<div
className={clsx("ttd-dialog-panel-button-container", {
invisible: !panelAction,
})}
style={{ display: "flex", alignItems: "center" }}
>
if (panelAction?.variant === "button") {
return (
<Button
className="ttd-dialog-panel-button"
onSelect={panelAction ? panelAction.action : () => {}}
disabled={panelActionDisabled || onTextSubmitInProgess}
className={clsx("ttd-dialog-panel-button", panelAction.className)}
onSelect={panelAction.action ? panelAction.action : () => {}}
disabled={panelAction?.disabled || onTextSubmitInProgess}
>
<div className={clsx({ invisible: onTextSubmitInProgess })}>
{panelAction?.label}
@@ -55,10 +78,46 @@ export const TTDDialogPanel = ({
</div>
{onTextSubmitInProgess && <Spinner />}
</Button>
{!panelActionDisabled &&
!onTextSubmitInProgess &&
renderSubmitShortcut?.()}
{renderBottomRight?.()}
);
}
if (panelAction?.variant === "rateLimit") {
return (
<div
className={clsx(
"ttd-dialog-panel__rate-limit",
panelAction.className,
)}
>
{panelAction.label}
</div>
);
}
};
return (
<div className={clsx("ttd-dialog-panel", className)}>
{(label || renderTopRight) && (
<div className="ttd-dialog-panel__header">
{typeof label === "string" ? <label>{label}</label> : label}
{renderTopRight?.()}
</div>
)}
{children}
<div
className={clsx("ttd-dialog-panel-button-container", {
invisible: !panelActions.length,
})}
style={{
justifyContent: panelActionJustifyContent,
}}
>
{panelActions.filter(Boolean).map((panelAction) => (
<Fragment key={panelAction.label}>
{renderPanelAction(panelAction)}
</Fragment>
))}
{!onTextSubmitInProgess && renderSubmitShortcut?.()}
</div>
</div>
);
@@ -0,0 +1,47 @@
import { t } from "../../i18n";
import { ArrowRightIcon } from "../icons";
import { TTDDialogPanel } from "./TTDDialogPanel";
import { TTDDialogOutput } from "./TTDDialogOutput";
import type { TTDPanelAction } from "./TTDDialogPanel";
interface TTDPreviewPanelProps {
canvasRef: React.RefObject<HTMLDivElement | null>;
error: Error | null;
loaded: boolean;
onInsert: () => void;
hideErrorDetails?: boolean;
}
export const TTDPreviewPanel = ({
canvasRef,
error,
loaded,
onInsert,
hideErrorDetails,
}: TTDPreviewPanelProps) => {
const actions: TTDPanelAction[] = [
{
action: onInsert,
label: t("chat.insert"),
icon: ArrowRightIcon,
variant: "button",
},
];
return (
<TTDDialogPanel
panelActionJustifyContent="flex-end"
panelActions={actions}
className="ttd-dialog-preview-panel"
>
<TTDDialogOutput
canvasRef={canvasRef}
error={error}
loaded={loaded}
hideErrorDetails={hideErrorDetails}
/>
</TTDDialogPanel>
);
};
@@ -0,0 +1,244 @@
import { useRef } from "react";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import { useAtom, useAtomValue } from "../../editor-jotai";
import { useApp, useExcalidrawSetAppState } from "../App";
import { useChatAgent } from "./Chat";
import {
convertMermaidToExcalidraw,
insertToEditor,
saveMermaidDataToStorage,
} from "./common";
import { errorAtom, chatHistoryAtom, showPreviewAtom } from "./TTDContext";
import { useTTDChatStorage } from "./useTTDChatStorage";
import { useMermaidRenderer } from "./hooks/useMermaidRenderer";
import { useTextGeneration } from "./hooks/useTextGeneration";
import { useChatManagement } from "./hooks/useChatManagement";
import { TTDChatPanel } from "./Chat/TTDChatPanel";
import { TTDPreviewPanel } from "./TTDPreviewPanel";
import { getLastAssistantMessage } from "./utils/chat";
import type { BinaryFiles } from "../../types";
import type { MermaidToExcalidrawLibProps, TChat, TTTDDialog } from "./types";
const TextToDiagramContent = ({
mermaidToExcalidrawLib,
onTextSubmit,
renderWarning,
}: {
mermaidToExcalidrawLib: MermaidToExcalidrawLibProps;
onTextSubmit: (
props: TTTDDialog.OnTextSubmitProps,
) => Promise<TTTDDialog.OnTextSubmitRetValue>;
renderWarning?: TTTDDialog.renderWarning;
}) => {
const app = useApp();
const setAppState = useExcalidrawSetAppState();
const canvasRef = useRef<HTMLDivElement | null>(null);
const [error, setError] = useAtom(errorAtom);
const [chatHistory, setChatHistory] = useAtom(chatHistoryAtom);
const showPreview = useAtomValue(showPreviewAtom);
const { savedChats } = useTTDChatStorage();
const lastAssistantMessage = getLastAssistantMessage(chatHistory);
const { setLastRetryAttempt } = useChatAgent();
const { data } = useMermaidRenderer({
canvasRef,
mermaidToExcalidrawLib,
});
const { onGenerate, handleAbort } = useTextGeneration({
onTextSubmit,
});
const {
isMenuOpen,
onRestoreChat,
handleDeleteChat,
handleNewChat,
handleMenuToggle,
handleMenuClose,
} = useChatManagement();
const onViewAsMermaid = () => {
if (typeof lastAssistantMessage?.content === "string") {
saveMermaidDataToStorage(lastAssistantMessage.content);
setAppState({
openDialog: { name: "ttd", tab: "mermaid" },
});
}
};
const handleMermaidTabClick = (message: TChat.ChatMessage) => {
const mermaidContent = message.content || "";
if (mermaidContent) {
saveMermaidDataToStorage(mermaidContent);
setAppState({
openDialog: { name: "ttd", tab: "mermaid" },
});
}
};
const handleInsertMessage = async (message: TChat.ChatMessage) => {
const mermaidContent = message.content || "";
if (!mermaidContent.trim() || !mermaidToExcalidrawLib.loaded) {
return;
}
const tempDataRef = {
current: {
elements: [] as readonly NonDeletedExcalidrawElement[],
files: null as BinaryFiles | null,
},
};
const result = await convertMermaidToExcalidraw({
canvasRef,
data: tempDataRef,
mermaidToExcalidrawLib,
setError,
mermaidDefinition: mermaidContent,
theme: app.state.theme,
});
if (result.success) {
insertToEditor({
app,
data: tempDataRef,
text: mermaidContent,
shouldSaveMermaidDataToStorage: true,
});
}
};
const handleAiRepairClick = async (message: TChat.ChatMessage) => {
const mermaidContent = message.content || "";
const errorMessage = message.error || "";
if (!mermaidContent) {
return;
}
const repairPrompt = `Fix the error in this Mermaid diagram. The diagram is:\n\n\`\`\`mermaid\n${mermaidContent}\n\`\`\`\n\nThe exception/error is: ${errorMessage}\n\nPlease fix the Mermaid syntax and regenerate a valid diagram.`;
await onGenerate(repairPrompt, true);
};
const handleRetry = async (message: TChat.ChatMessage) => {
const messageIndex = chatHistory.messages.findIndex(
(msg) => msg.id === message.id,
);
if (messageIndex > 0) {
const previousMessage = chatHistory.messages[messageIndex - 1];
if (previousMessage.type === "user" && previousMessage.content) {
setLastRetryAttempt();
await onGenerate(previousMessage.content, true);
}
}
};
const handleInsertToEditor = () => {
insertToEditor({ app, data });
};
const handleDeleteMessage = (messageId: string) => {
const assistantMessageIndex = chatHistory.messages.findIndex(
(msg) => msg.id === messageId && msg.type === "assistant",
);
const remainingMessages = chatHistory.messages.slice(
0,
assistantMessageIndex - 1,
);
setChatHistory({
...chatHistory,
messages: remainingMessages,
});
};
const handlePromptChange = (newPrompt: string) => {
setChatHistory((prev) => ({
...prev,
currentPrompt: newPrompt,
}));
};
return (
<div
className={`ttd-dialog-layout ${
showPreview
? "ttd-dialog-layout--split"
: "ttd-dialog-layout--chat-only"
}`}
>
<TTDChatPanel
chatId={chatHistory.id}
messages={chatHistory.messages}
currentPrompt={chatHistory.currentPrompt}
onPromptChange={handlePromptChange}
onSendMessage={onGenerate}
isGenerating={lastAssistantMessage?.isGenerating ?? false}
generatedResponse={lastAssistantMessage?.content}
isMenuOpen={isMenuOpen}
onMenuToggle={handleMenuToggle}
onMenuClose={handleMenuClose}
onNewChat={handleNewChat}
onRestoreChat={onRestoreChat}
onDeleteChat={handleDeleteChat}
savedChats={savedChats}
activeSessionId={chatHistory.id}
onAbort={handleAbort}
onMermaidTabClick={handleMermaidTabClick}
onAiRepairClick={handleAiRepairClick}
onDeleteMessage={handleDeleteMessage}
onInsertMessage={handleInsertMessage}
onRetry={handleRetry}
onViewAsMermaid={onViewAsMermaid}
renderWarning={renderWarning}
/>
{showPreview && (
<TTDPreviewPanel
canvasRef={canvasRef}
hideErrorDetails={lastAssistantMessage?.errorType === "parse"}
error={error}
loaded={mermaidToExcalidrawLib.loaded}
onInsert={handleInsertToEditor}
/>
)}
</div>
);
};
export const TextToDiagram = ({
mermaidToExcalidrawLib,
onTextSubmit,
renderWarning,
}: {
mermaidToExcalidrawLib: MermaidToExcalidrawLibProps;
onTextSubmit(
props: TTTDDialog.OnTextSubmitProps,
): Promise<TTTDDialog.OnTextSubmitRetValue>;
renderWarning?: TTTDDialog.renderWarning;
}) => {
return (
<TextToDiagramContent
mermaidToExcalidrawLib={mermaidToExcalidrawLib}
onTextSubmit={onTextSubmit}
renderWarning={renderWarning}
/>
);
};
export default TextToDiagram;
@@ -1,18 +1,22 @@
import { DEFAULT_EXPORT_PADDING, EDITOR_LS_KEYS } from "@excalidraw/common";
import type { MermaidConfig } from "@excalidraw/mermaid-to-excalidraw";
import type { MermaidToExcalidrawResult } from "@excalidraw/mermaid-to-excalidraw/dist/interfaces";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import type {
NonDeletedExcalidrawElement,
Theme,
} from "@excalidraw/element/types";
import { EditorLocalStorage } from "../../data/EditorLocalStorage";
import { canvasToBlob } from "../../data/blob";
import { t } from "../../i18n";
import { convertToExcalidrawElements, exportToCanvas } from "../../index";
import {
convertToExcalidrawElements,
exportToCanvas,
THEME,
} from "../../index";
import type { MermaidToExcalidrawLibProps } from "./types";
import type { AppClassProperties, BinaryFiles } from "../../types";
const resetPreview = ({
export const resetPreview = ({
canvasRef,
setError,
}: {
@@ -33,17 +37,14 @@ const resetPreview = ({
canvasNode.replaceChildren();
};
export interface MermaidToExcalidrawLibProps {
loaded: boolean;
api: Promise<{
parseMermaidToExcalidraw: (
definition: string,
config?: MermaidConfig,
) => Promise<MermaidToExcalidrawResult>;
}>;
}
interface ConvertMermaidToExcalidrawFormatProps {
export const convertMermaidToExcalidraw = async ({
canvasRef,
mermaidToExcalidrawLib,
mermaidDefinition,
setError,
data,
theme,
}: {
canvasRef: React.RefObject<HTMLDivElement | null>;
mermaidToExcalidrawLib: MermaidToExcalidrawLibProps;
mermaidDefinition: string;
@@ -52,38 +53,36 @@ interface ConvertMermaidToExcalidrawFormatProps {
elements: readonly NonDeletedExcalidrawElement[];
files: BinaryFiles | null;
}>;
}
export const convertMermaidToExcalidraw = async ({
canvasRef,
mermaidToExcalidrawLib,
mermaidDefinition,
setError,
data,
}: ConvertMermaidToExcalidrawFormatProps) => {
theme: Theme;
}): Promise<{ success: true } | { success: false; error?: Error }> => {
const canvasNode = canvasRef.current;
const parent = canvasNode?.parentElement;
if (!canvasNode || !parent) {
return;
return { success: false };
}
if (!mermaidDefinition) {
resetPreview({ canvasRef, setError });
return;
return { success: false };
}
let ret;
try {
const api = await mermaidToExcalidrawLib.api;
let ret;
try {
ret = await api.parseMermaidToExcalidraw(mermaidDefinition);
} catch (err: any) {
ret = await api.parseMermaidToExcalidraw(
mermaidDefinition.replace(/"/g, "'"),
);
try {
ret = await api.parseMermaidToExcalidraw(mermaidDefinition);
} catch (err: unknown) {
ret = await api.parseMermaidToExcalidraw(
mermaidDefinition.replace(/"/g, "'"),
);
}
} catch (err: unknown) {
return { success: false, error: err as Error };
}
const { elements, files } = ret;
setError(null);
@@ -102,34 +101,23 @@ export const convertMermaidToExcalidraw = async ({
Math.max(parent.offsetWidth, parent.offsetHeight) *
window.devicePixelRatio,
appState: {
// TODO hack (will be refactored in TTD v2)
exportWithDarkMode: document
.querySelector(".excalidraw-container")
?.classList.contains("theme--dark"),
exportWithDarkMode: theme === THEME.DARK,
},
});
// if converting to blob fails, there's some problem that will
// likely prevent preview and export (e.g. canvas too big)
try {
await canvasToBlob(canvas);
} catch (e: any) {
if (e.name === "CANVAS_POSSIBLY_TOO_BIG") {
throw new Error(t("canvasError.canvasTooBig"));
}
throw e;
}
parent.style.background = "var(--default-bg-color)";
canvasNode.replaceChildren(canvas);
return { success: true };
} catch (err: any) {
parent.style.background = "var(--default-bg-color)";
if (mermaidDefinition) {
setError(err);
}
throw err;
// Return error so caller can display meaningful error message
return { success: false, error: err };
}
};
export const saveMermaidDataToStorage = (mermaidDefinition: string) => {
EditorLocalStorage.set(
EDITOR_LS_KEYS.MERMAID_TO_EXCALIDRAW,
@@ -0,0 +1,95 @@
import { useState } from "react";
import { useAtom, useSetAtom } from "../../../editor-jotai";
import { errorAtom, chatHistoryAtom } from "../TTDContext";
import { useTTDChatStorage } from "../useTTDChatStorage";
import { getLastAssistantMessage } from "../utils/chat";
import type { SavedChat } from "../types";
export const useChatManagement = () => {
const setError = useSetAtom(errorAtom);
const [chatHistory, setChatHistory] = useAtom(chatHistoryAtom);
const [isMenuOpen, setIsMenuOpen] = useState(false);
const { restoreChat, deleteChat, createNewChatId } = useTTDChatStorage();
const resetChatState = () => {
const newSessionId = createNewChatId();
setChatHistory({
id: newSessionId,
messages: [],
currentPrompt: "",
});
setError(null);
};
const applyChatToState = (chat: SavedChat) => {
const restoredMessages = chat.messages.map((msg) => ({
...msg,
timestamp:
msg.timestamp instanceof Date ? msg.timestamp : new Date(msg.timestamp),
}));
const history = {
id: chat.id,
messages: restoredMessages,
currentPrompt: "",
};
const lastAssistantMsg = getLastAssistantMessage(history);
setError(
lastAssistantMsg?.error ? new Error(lastAssistantMsg?.error) : null,
);
setChatHistory(history);
};
const onRestoreChat = (chat: SavedChat) => {
const restoredChat = restoreChat(chat);
applyChatToState(restoredChat);
setIsMenuOpen(false);
};
const handleDeleteChat = (chatId: string, event: React.MouseEvent) => {
event.stopPropagation();
const isDeletingActiveChat = chatId === chatHistory.id;
const updatedChats = deleteChat(chatId);
if (isDeletingActiveChat) {
if (updatedChats.length > 0) {
const nextChat = updatedChats[0];
applyChatToState(nextChat);
} else {
resetChatState();
}
}
};
const handleNewChat = () => {
resetChatState();
setIsMenuOpen(false);
};
const handleMenuToggle = () => {
setIsMenuOpen((prev) => !prev);
};
const handleMenuClose = () => {
setIsMenuOpen(false);
};
return {
isMenuOpen,
onRestoreChat,
handleDeleteChat,
handleNewChat,
handleMenuToggle,
handleMenuClose,
};
};
@@ -0,0 +1,218 @@
import { useCallback, useEffect, useMemo, useRef } from "react";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import { useAtom } from "../../../editor-jotai";
import { chatHistoryAtom, errorAtom, showPreviewAtom } from "../TTDContext";
import { convertMermaidToExcalidraw } from "../common";
import { isValidMermaidSyntax } from "../utils/mermaidValidation";
import { getLastAssistantMessage } from "../utils/chat";
import { useUIAppState } from "../../../context/ui-appState";
import type { BinaryFiles } from "../../../types";
import type { MermaidToExcalidrawLibProps } from "../types";
const FAST_THROTTLE_DELAY = 300;
const SLOW_THROTTLE_DELAY = 3000;
const RENDER_SPEED_THRESHOLD = 100;
const PARSE_FAIL_DELAY = 100;
interface UseMermaidRendererProps {
mermaidToExcalidrawLib: MermaidToExcalidrawLibProps;
canvasRef: React.RefObject<HTMLDivElement | null>;
}
export const useMermaidRenderer = ({
mermaidToExcalidrawLib,
canvasRef,
}: UseMermaidRendererProps) => {
const [chatHistory] = useAtom(chatHistoryAtom);
const [, setError] = useAtom(errorAtom);
const [showPreview, setShowPreview] = useAtom(showPreviewAtom);
const isRenderingRef = useRef(false);
const lastAssistantMessage = useMemo(
() => getLastAssistantMessage(chatHistory),
[chatHistory],
);
// Keeping lastAssistantMesssage in ref, so I can access it in useEffect hooks
const lastAssistantMessageRef = useRef(lastAssistantMessage);
useEffect(() => {
lastAssistantMessageRef.current = lastAssistantMessage;
}, [lastAssistantMessage]);
const data = useRef<{
elements: readonly NonDeletedExcalidrawElement[];
files: BinaryFiles | null;
}>({
elements: [],
files: null,
});
const lastRenderTimeRef = useRef(0);
const pendingContentRef = useRef<string | null>(null);
const hasErrorOffsetRef = useRef(false);
const currentThrottleDelayRef = useRef(FAST_THROTTLE_DELAY);
const { theme } = useUIAppState();
const renderMermaid = useCallback(
async (mermaidDefinition: string): Promise<boolean> => {
if (!mermaidDefinition.trim() || !mermaidToExcalidrawLib.loaded) {
return false;
}
if (isRenderingRef.current) {
return false;
}
isRenderingRef.current = true;
const renderStartTime = performance.now();
const result = await convertMermaidToExcalidraw({
canvasRef,
data,
mermaidToExcalidrawLib,
setError,
mermaidDefinition,
theme,
});
const renderDuration = performance.now() - renderStartTime;
if (renderDuration < RENDER_SPEED_THRESHOLD) {
currentThrottleDelayRef.current = FAST_THROTTLE_DELAY;
} else {
currentThrottleDelayRef.current = SLOW_THROTTLE_DELAY;
}
isRenderingRef.current = false;
return result.success;
},
[canvasRef, mermaidToExcalidrawLib, setError, theme],
);
const throttledRenderMermaid = useMemo(() => {
const fn = async (content: string) => {
const now = Date.now();
const timeSinceLastRender = now - lastRenderTimeRef.current;
const throttleDelay = currentThrottleDelayRef.current;
if (!isValidMermaidSyntax(content)) {
if (!hasErrorOffsetRef.current) {
lastRenderTimeRef.current = Math.max(
lastRenderTimeRef.current,
now - throttleDelay + PARSE_FAIL_DELAY,
);
hasErrorOffsetRef.current = true;
}
pendingContentRef.current = content;
return;
}
hasErrorOffsetRef.current = false;
if (timeSinceLastRender < throttleDelay) {
pendingContentRef.current = content;
return;
}
pendingContentRef.current = null;
const success = await renderMermaid(content);
lastRenderTimeRef.current = Date.now();
if (!success) {
lastRenderTimeRef.current =
lastRenderTimeRef.current - throttleDelay + PARSE_FAIL_DELAY;
hasErrorOffsetRef.current = true;
}
};
fn.flush = async () => {
if (pendingContentRef.current) {
const content = pendingContentRef.current;
pendingContentRef.current = null;
await renderMermaid(content);
lastRenderTimeRef.current = Date.now();
}
};
fn.cancel = () => {
pendingContentRef.current = null;
};
return fn;
}, [renderMermaid]);
const resetThrottleState = useCallback(() => {
lastRenderTimeRef.current = 0;
pendingContentRef.current = null;
hasErrorOffsetRef.current = false;
currentThrottleDelayRef.current = FAST_THROTTLE_DELAY;
}, []);
// this hook is responsible for keep rendering during streaming
useEffect(() => {
if (lastAssistantMessage?.content && lastAssistantMessage?.isGenerating) {
throttledRenderMermaid(lastAssistantMessage.content);
}
}, [
throttledRenderMermaid,
lastAssistantMessage?.isGenerating,
lastAssistantMessage?.content,
]);
// make sure the last bits are rendered once the streaming is completed
useEffect(() => {
if (!lastAssistantMessage?.isGenerating) {
throttledRenderMermaid.flush();
resetThrottleState();
}
}, [
resetThrottleState,
throttledRenderMermaid,
lastAssistantMessage?.isGenerating,
]);
// render the last message if the user navigates between the existing chats
useEffect(() => {
const msg = lastAssistantMessageRef.current;
if (!msg?.content || msg.error) {
return;
}
if (!showPreview) {
return;
}
renderMermaid(msg.content);
}, [chatHistory?.id, renderMermaid, showPreview]);
useEffect(() => {
if (
!chatHistory.messages?.filter((msg) => msg.type === "assistant").length
) {
const canvasNode = canvasRef.current;
if (canvasNode) {
const parent = canvasNode.parentElement;
if (parent) {
parent.style.background = "";
canvasNode.replaceChildren();
}
}
setShowPreview(false);
} else if (!showPreview) {
setShowPreview(true);
}
}, [chatHistory.messages, setShowPreview, canvasRef, showPreview]);
return {
data,
};
};
@@ -0,0 +1,252 @@
import { useRef } from "react";
import { parseMermaidToExcalidraw } from "@excalidraw/mermaid-to-excalidraw";
import { isFiniteNumber } from "@excalidraw/math";
import { useAtom } from "../../../editor-jotai";
import { trackEvent } from "../../../analytics";
import { t } from "../../../i18n";
import { errorAtom, rateLimitsAtom, chatHistoryAtom } from "../TTDContext";
import { useChatAgent } from "../Chat";
import {
addMessages,
getLastAssistantMessage,
getMessagesForLLM,
removeLastAssistantMessage,
updateAssistantContent,
} from "../utils/chat";
import type { TTTDDialog } from "../types";
const MIN_PROMPT_LENGTH = 3;
const MAX_PROMPT_LENGTH = 10000;
export const useTextGeneration = ({
onTextSubmit,
}: {
onTextSubmit: (
props: TTTDDialog.OnTextSubmitProps,
) => Promise<TTTDDialog.OnTextSubmitRetValue>;
}) => {
const [, setError] = useAtom(errorAtom);
const [rateLimits, setRateLimits] = useAtom(rateLimitsAtom);
const [chatHistory, setChatHistory] = useAtom(chatHistoryAtom);
const { addUserMessage, addAssistantMessage, setAssistantError } =
useChatAgent();
const streamingAbortControllerRef = useRef<AbortController | null>(null);
const validatePrompt = (prompt: string): boolean => {
if (
prompt.length > MAX_PROMPT_LENGTH ||
prompt.length < MIN_PROMPT_LENGTH ||
rateLimits?.rateLimitRemaining === 0
) {
if (prompt.length < MIN_PROMPT_LENGTH) {
setError(
new Error(
t("chat.errors.promptTooShort", { min: MIN_PROMPT_LENGTH }),
),
);
}
if (prompt.length > MAX_PROMPT_LENGTH) {
setError(
new Error(t("chat.errors.promptTooLong", { max: MAX_PROMPT_LENGTH })),
);
}
return false;
}
return true;
};
const getReadableErrorMsg = (msg: string) => {
try {
const content = JSON.parse(msg);
const innerMessages = JSON.parse(content.message);
return innerMessages
.map((oneMsg: { message: string }) => oneMsg.message)
.join("\n");
} catch (err) {
return msg;
}
};
const handleError = (error: Error, errorType: "parse" | "network") => {
if (errorType === "parse") {
trackEvent("ai", "mermaid parse failed", "ttd");
}
const msg = getReadableErrorMsg(error.message);
setAssistantError(msg, errorType);
setError(error);
};
const onGenerate = async (
promptWithContext: string,
isRepairFlow = false,
) => {
if (!validatePrompt(promptWithContext)) {
return;
}
if (streamingAbortControllerRef.current) {
streamingAbortControllerRef.current.abort();
}
setError(null);
const abortController = new AbortController();
streamingAbortControllerRef.current = abortController;
if (!isRepairFlow) {
addUserMessage(promptWithContext);
addAssistantMessage();
} else {
const lastAsisstantMessage = getLastAssistantMessage(chatHistory);
if (lastAsisstantMessage?.errorType === "network") {
setChatHistory((prev) =>
updateAssistantContent(prev, {
isGenerating: true,
error: undefined,
errorType: undefined,
errorDetails: undefined,
}),
);
}
}
try {
trackEvent("ai", "generate", "ttd");
const previousMessages = getMessagesForLLM(chatHistory);
const { generatedResponse, error, rateLimit, rateLimitRemaining } =
await onTextSubmit({
messages: [
...previousMessages.slice(-3),
{ role: "user", content: promptWithContext },
],
onStreamCreated: () => {
if (isRepairFlow) {
setChatHistory((prev) =>
updateAssistantContent(prev, {
content: "",
error: "",
isGenerating: true,
}),
);
}
},
onChunk: (chunk: string) => {
setChatHistory((prev) => {
const lastAssistantMessage = getLastAssistantMessage(prev);
return updateAssistantContent(prev, {
content: lastAssistantMessage.content + chunk,
});
});
},
signal: abortController.signal,
});
setChatHistory((prev) =>
updateAssistantContent(prev, {
isGenerating: false,
}),
);
if (isFiniteNumber(rateLimit) && isFiniteNumber(rateLimitRemaining)) {
setRateLimits({ rateLimit, rateLimitRemaining });
}
if (error) {
const isAborted =
error.name === "AbortError" ||
error.message === "Aborted" ||
abortController.signal.aborted;
// do nothing if the request was aborted by the user
if (isAborted) {
return;
}
if (error.status === 429) {
setChatHistory((prev) => {
const chatHistory = removeLastAssistantMessage(prev);
return {
...chatHistory,
messages: chatHistory.messages.filter(
(msg) =>
msg.type !== "warning" ||
msg.warningType === "rateLimitExceeded" ||
msg.warningType === "messageLimitExceeded",
),
};
});
setChatHistory((chatHistory) => {
return addMessages(chatHistory, [
{
type: "warning",
warningType:
rateLimitRemaining === 0
? "messageLimitExceeded"
: "rateLimitExceeded",
},
]);
});
return;
} else if (rateLimitRemaining === 0) {
setChatHistory((chatHistory) => {
chatHistory = {
...chatHistory,
messages: chatHistory.messages.filter(
(msg) =>
msg.type !== "warning" ||
msg.warningType === "rateLimitExceeded" ||
msg.warningType === "messageLimitExceeded",
),
};
return addMessages(chatHistory, [
{
type: "warning",
warningType: "messageLimitExceeded",
},
]);
});
}
handleError(error as Error, "network");
return;
}
await parseMermaidToExcalidraw(generatedResponse ?? "");
trackEvent("ai", "mermaid parse success", "ttd");
} catch (error: unknown) {
handleError(error as Error, "parse");
} finally {
streamingAbortControllerRef.current = null;
}
};
const handleAbort = () => {
if (streamingAbortControllerRef.current) {
streamingAbortControllerRef.current.abort();
}
};
return {
onGenerate,
handleAbort,
};
};
@@ -0,0 +1,96 @@
import type { RequestError } from "@excalidraw/excalidraw/errors";
import type { NonDeletedExcalidrawElement } from "@excalidraw/element/types";
import type { MermaidConfig } from "@excalidraw/mermaid-to-excalidraw";
import type { MermaidToExcalidrawResult } from "@excalidraw/mermaid-to-excalidraw/dist/interfaces";
import type { BinaryFiles } from "../../types";
export type LLMMessage = {
role: "user" | "assistant";
content: string;
};
export type MermaidData = {
elements: readonly NonDeletedExcalidrawElement[];
files: BinaryFiles | null;
};
export interface RateLimits {
rateLimit: number;
rateLimitRemaining: number;
}
export namespace TChat {
export type ChatMessage = {
id: string;
timestamp: Date;
isGenerating?: boolean;
error?: string;
errorDetails?: string;
errorType?: "parse" | "network" | "other";
lastAttemptAt?: number;
type: "user" | "assistant" | "warning";
warningType?: /* daily rate limit */
"messageLimitExceeded" | /* general 429 */ "rateLimitExceeded";
content?: string;
};
export type ChatHistory = {
id: string;
messages: ChatMessage[];
currentPrompt: string;
};
}
export interface SavedChat {
id: string;
title: string;
messages: TChat.ChatMessage[];
currentPrompt: string;
timestamp: number;
}
export interface MermaidToExcalidrawLibProps {
loaded: boolean;
api: Promise<{
parseMermaidToExcalidraw: (
definition: string,
config?: MermaidConfig,
) => Promise<MermaidToExcalidrawResult>;
}>;
}
export namespace TTTDDialog {
export type OnTextSubmitProps = {
messages: LLMMessage[];
onChunk?: (chunk: string) => void;
onStreamCreated?: () => void;
signal?: AbortSignal;
};
export type OnTextSubmitRetValue = {
rateLimit?: number | null;
rateLimitRemaining?: number | null;
} & (
| { generatedResponse: string; error: null }
| {
error: RequestError;
generatedResponse?: null;
}
);
// TTDDialog props
export type onTextSubmit = (
props: OnTextSubmitProps,
) => Promise<OnTextSubmitRetValue>;
/**
* return undefined to use default rendering
*/
export type renderWarning = (
chatMessage: TChat.ChatMessage,
) => React.ReactNode | undefined;
}
@@ -0,0 +1,153 @@
import { useEffect } from "react";
import { randomId } from "@excalidraw/common";
import { atom, useAtom } from "../../editor-jotai";
import { chatHistoryAtom } from "./TTDContext";
import type { SavedChat } from "./types";
const TTD_CHATS_STORAGE_KEY = "excalidraw-ttd-chats";
interface UseTTDChatStorageReturn {
savedChats: SavedChats;
saveCurrentChat: () => void;
deleteChat: (chatId: string) => SavedChats;
restoreChat: (chat: SavedChat) => SavedChat;
createNewChatId: () => string;
}
type SavedChats = SavedChat[];
const saveChatsToStorage = (chats: SavedChats) => {
try {
window.localStorage.setItem(TTD_CHATS_STORAGE_KEY, JSON.stringify(chats));
} catch (error: any) {
console.warn(`Failed to save chats to localStorage: ${error.message}`);
}
};
const loadChatsFromStorage = (): SavedChats => {
try {
const data = window.localStorage.getItem(TTD_CHATS_STORAGE_KEY);
if (data) {
return JSON.parse(data) as SavedChats;
}
} catch (error: any) {
console.warn(`Failed to load chats from localStorage: ${error.message}`);
}
return [];
};
const generateChatTitle = (firstMessage: string): string => {
const trimmed = firstMessage.trim();
if (trimmed.length <= 50) {
return trimmed;
}
return `${trimmed.substring(0, 47)}...`;
};
// Shared atom for saved chats - initialized once from localStorage
export const savedChatsAtom = atom<SavedChats>(loadChatsFromStorage());
export const useTTDChatStorage = (): UseTTDChatStorageReturn => {
const [chatHistory] = useAtom(chatHistoryAtom);
const [savedChats, setSavedChats] = useAtom(savedChatsAtom);
const lastMessageInHistory =
chatHistory?.messages[chatHistory?.messages.length - 1];
const saveCurrentChat = () => {
if (chatHistory.messages.length === 0) {
return;
}
const firstUserMessage = chatHistory.messages.find(
(msg) => msg.type === "user",
);
if (!firstUserMessage || !firstUserMessage.content) {
return;
}
const title = generateChatTitle(firstUserMessage.content);
const currentSavedChats = loadChatsFromStorage();
const existingChat = currentSavedChats.find(
(chat) => chat.id === chatHistory.id,
);
const messagesChanged =
!existingChat ||
existingChat.messages.length !== chatHistory.messages.length ||
existingChat.messages.some(
(msg, i) =>
msg.id !== chatHistory.messages[i]?.id ||
msg.content !== chatHistory.messages[i]?.content,
);
const chatToSave: SavedChat = {
id: chatHistory.id,
title,
messages: chatHistory.messages
.filter((msg) => msg.type === "user" || msg.type === "assistant")
.map((msg) => ({
...msg,
timestamp:
msg.timestamp instanceof Date
? msg.timestamp
: new Date(msg.timestamp),
})),
currentPrompt: chatHistory.currentPrompt,
timestamp: messagesChanged
? Date.now()
: existingChat?.timestamp ?? Date.now(),
};
const updatedChats = [
...currentSavedChats.filter((chat) => chat.id !== chatHistory.id),
chatToSave,
]
.sort((a, b) => b.timestamp - a.timestamp)
.slice(0, 10);
setSavedChats(updatedChats);
saveChatsToStorage(updatedChats);
};
useEffect(() => {
if (!lastMessageInHistory?.isGenerating) {
saveCurrentChat();
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [
chatHistory.messages?.length,
lastMessageInHistory?.id,
lastMessageInHistory?.isGenerating,
]);
const deleteChat = (chatId: string): SavedChats => {
const updatedChats = savedChats.filter((chat) => chat.id !== chatId);
setSavedChats(updatedChats);
saveChatsToStorage(updatedChats);
return updatedChats;
};
const restoreChat = (chat: SavedChat): SavedChat => {
saveCurrentChat();
return chat;
};
const createNewChatId = (): string => {
saveCurrentChat();
return randomId();
};
return {
savedChats,
saveCurrentChat,
deleteChat,
restoreChat,
createNewChatId,
};
};
@@ -0,0 +1,228 @@
import { RequestError } from "@excalidraw/excalidraw/errors";
import type {
LLMMessage,
TTTDDialog,
} from "@excalidraw/excalidraw/components/TTDDialog/types";
interface RateLimitInfo {
rateLimit?: number;
rateLimitRemaining?: number;
}
interface StreamingOptions {
url: string;
messages: readonly LLMMessage[];
onChunk?: (chunk: string) => void;
extractRateLimits?: boolean;
signal?: AbortSignal;
onStreamCreated?: () => void;
}
export type StreamChunk =
| {
type: "content";
delta: string;
}
| {
type: "done";
finishReason: "stop" | "length" | "content_filter" | "tool_calls" | null;
}
| {
type: "error";
error: {
message: string;
code?: string;
};
};
function extractRateLimitHeaders(headers: Headers): RateLimitInfo {
const rateLimit = headers.get("X-Ratelimit-Limit");
const rateLimitRemaining = headers.get("X-Ratelimit-Remaining");
return {
rateLimit: rateLimit ? parseInt(rateLimit, 10) : undefined,
rateLimitRemaining: rateLimitRemaining
? parseInt(rateLimitRemaining, 10)
: undefined,
};
}
async function* parseSSEStream(
reader: ReadableStreamDefaultReader<Uint8Array>,
): AsyncGenerator<string, void, unknown> {
const decoder = new TextDecoder();
let buffer = "";
try {
while (true) {
const { done, value } = await reader.read();
if (done) {
break;
}
buffer += decoder.decode(value, { stream: true });
const lines = buffer.split("\n");
buffer = lines.pop() || "";
for (const line of lines) {
const trimmedLine = line.trim();
if (!trimmedLine) {
continue;
}
if (trimmedLine.startsWith("data: ")) {
const data = trimmedLine.slice(6);
yield data;
}
}
}
} finally {
reader.releaseLock();
}
}
export async function TTDStreamFetch(
options: StreamingOptions,
): Promise<TTTDDialog.OnTextSubmitRetValue> {
const {
url,
messages,
onChunk,
onStreamCreated,
extractRateLimits = true,
signal,
} = options;
try {
let fullResponse = "";
let rateLimitInfo: RateLimitInfo = {};
let error: RequestError | null = null;
const response = await fetch(url, {
method: "POST",
headers: {
Accept: "text/event-stream",
"Content-Type": "application/json",
},
body: JSON.stringify({ messages }),
signal,
});
if (extractRateLimits) {
rateLimitInfo = extractRateLimitHeaders(response.headers);
}
if (!response.ok) {
if (response.status === 429) {
return {
...rateLimitInfo,
error: new RequestError({
message: "Rate limit exceeded",
status: 429,
}),
};
}
const text = await response.text();
throw new RequestError({
message: text || "Generation failed...",
status: response.status,
});
}
const reader = response.body?.getReader();
if (!reader) {
throw new RequestError({
message: "Couldn't get reader from response body",
status: 500,
});
}
onStreamCreated?.();
try {
for await (const data of parseSSEStream(reader)) {
if (data === "[DONE]") {
break;
}
try {
const chunk: StreamChunk = JSON.parse(data);
if (chunk === null) {
break;
}
switch (chunk.type) {
case "content": {
const delta = chunk.delta;
if (delta) {
fullResponse += delta;
onChunk?.(delta);
}
break;
}
case "error":
error = new RequestError({
message: chunk.error.message,
status: 500,
});
break;
case "done":
break;
}
} catch (e) {
console.warn("Failed to parse SSE data:", data, e);
}
}
} catch (streamError: any) {
if (streamError.name === "AbortError") {
error = new RequestError({ message: "Request aborted", status: 499 });
} else {
error = new RequestError({
message: streamError.message || "Streaming error",
status: 500,
});
}
}
if (error) {
return {
...rateLimitInfo,
error,
};
}
if (!fullResponse) {
return {
...rateLimitInfo,
error: new RequestError({
message: "Generation failed...",
status: response.status,
}),
};
}
return {
generatedResponse: fullResponse,
error: null,
...rateLimitInfo,
};
} catch (err: any) {
if (err.name === "AbortError") {
return {
error: new RequestError({ message: "Request aborted", status: 499 }),
};
}
return {
error: new RequestError({
message: err.message || "Request failed",
status: 500,
}),
};
}
}
@@ -0,0 +1,497 @@
import { vi, describe, it, expect, beforeEach, afterEach } from "vitest";
import { TTDStreamFetch } from "./TTDStreamFetch";
import type { StreamChunk } from "./TTDStreamFetch";
function createMockStream(chunks: string[]): ReadableStream<Uint8Array> {
const encoder = new TextEncoder();
let index = 0;
return new ReadableStream({
async pull(controller) {
if (index < chunks.length) {
controller.enqueue(encoder.encode(chunks[index]));
index++;
} else {
controller.close();
}
},
});
}
const createContentChunkData = (delta: string): string => {
const data: StreamChunk & { type: "content" } = { type: "content", delta };
return JSON.stringify(data);
};
const createContentChunk = (delta: string): string => {
return `data: ${createContentChunkData(delta)}\n\n`;
};
const createDataChunk = (data: string): string => {
return `data: ${data}\n\n`;
};
const DONE_CHUNK = "data: [DONE]\n\n";
describe("TTDStreamFetch", () => {
let originalFetch: typeof global.fetch;
beforeEach(() => {
originalFetch = global.fetch;
});
afterEach(() => {
global.fetch = originalFetch;
vi.restoreAllMocks();
});
describe("successful streaming", () => {
it("should stream data chunks and return full response", async () => {
const chunks: string[] = [];
const mockChunks = [
createContentChunk("Hello "),
createContentChunk("world"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
onChunk: (chunk) => chunks.push(chunk),
});
expect(result.generatedResponse).toBe("Hello world");
expect(chunks).toEqual(["Hello ", "world"]);
expect(result.error).toBeNull();
});
it("should handle multi-line chunks", async () => {
const mockChunks = [
createContentChunk("Line 1\n"),
createContentChunk("Line 2"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("Line 1\nLine 2");
});
it("should call onStreamCreated callback", async () => {
const onStreamCreated = vi.fn();
const mockChunks = [createContentChunk("test"), DONE_CHUNK];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
onStreamCreated,
});
expect(onStreamCreated).toHaveBeenCalledTimes(1);
});
it("should handle empty chunks gracefully", async () => {
const mockChunks = [
createContentChunk(""),
createContentChunk("valid"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("valid");
});
it("should handle null chunk as stream termination", async () => {
const mockChunks = [
createContentChunk("before null"),
createDataChunk("null"),
createContentChunk("after null"),
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("before null");
});
});
describe("rate limit handling", () => {
it("should extract rate limit headers when enabled", async () => {
const mockChunks = [createContentChunk("test"), DONE_CHUNK];
const headers = new Headers();
headers.set("X-Ratelimit-Limit", "100");
headers.set("X-Ratelimit-Remaining", "95");
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers,
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
extractRateLimits: true,
});
expect(result.rateLimit).toBe(100);
expect(result.rateLimitRemaining).toBe(95);
});
it("should not extract rate limits when disabled", async () => {
const mockChunks = [createContentChunk("test"), DONE_CHUNK];
const headers = new Headers();
headers.set("X-Ratelimit-Limit", "100");
headers.set("X-Ratelimit-Remaining", "95");
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers,
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
extractRateLimits: false,
});
expect(result.rateLimit).toBeUndefined();
expect(result.rateLimitRemaining).toBeUndefined();
});
it("should handle missing rate limit headers", async () => {
const mockChunks = [createContentChunk("test"), DONE_CHUNK];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
extractRateLimits: true,
});
expect(result.rateLimit).toBeUndefined();
expect(result.rateLimitRemaining).toBeUndefined();
});
it("should return specific error for 429 rate limit", async () => {
const headers = new Headers();
headers.set("X-Ratelimit-Limit", "100");
headers.set("X-Ratelimit-Remaining", "0");
global.fetch = vi.fn().mockResolvedValue({
ok: false,
status: 429,
headers,
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Rate limit exceeded");
expect(result.rateLimit).toBe(100);
expect(result.rateLimitRemaining).toBe(0);
});
});
describe("error handling", () => {
it("should handle non-ok response with text", async () => {
global.fetch = vi.fn().mockResolvedValue({
ok: false,
status: 500,
headers: new Headers(),
text: async () => "Server error occurred",
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Server error occurred");
});
it("should handle non-ok response without text", async () => {
global.fetch = vi.fn().mockResolvedValue({
ok: false,
status: 500,
headers: new Headers(),
text: async () => "",
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Generation failed...");
});
it("should handle missing response body", async () => {
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: null,
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe(
"Couldn't get reader from response body",
);
});
it("should handle empty response", async () => {
const mockChunks = [DONE_CHUNK];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Generation failed...");
});
it("should handle network errors", async () => {
global.fetch = vi
.fn()
.mockRejectedValue(new Error("Network connection failed"));
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Network connection failed");
});
it("should handle invalid JSON in stream", async () => {
const consoleWarnSpy = vi
.spyOn(console, "warn")
.mockImplementation(() => {});
const mockChunks = [
createDataChunk("invalid"),
createContentChunk("valid"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("valid");
expect(consoleWarnSpy).toHaveBeenCalled();
consoleWarnSpy.mockRestore();
});
});
describe("abort handling", () => {
it("should handle abort signal during fetch", async () => {
const abortController = new AbortController();
global.fetch = vi.fn().mockImplementation(() => {
abortController.abort();
const error = new Error("The operation was aborted");
error.name = "AbortError";
return Promise.reject(error);
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
signal: abortController.signal,
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Request aborted");
});
it("should handle abort error thrown during streaming", async () => {
// Create a stream that throws an AbortError
const stream = new ReadableStream({
async pull() {
const error = new Error("The operation was aborted");
error.name = "AbortError";
throw error;
},
});
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: stream,
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.error).toBeDefined();
expect(result.error?.message).toBe("Request aborted");
});
});
describe("SSE parsing", () => {
it("should handle lines without data prefix", async () => {
const mockChunks = [
": comment line\n",
createContentChunk("valid"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("valid");
});
it("should handle empty lines in stream", async () => {
const mockChunks = [
createContentChunk("first"),
"\n\n",
createContentChunk("second"),
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("firstsecond");
});
it("should handle partial chunks across reads", async () => {
// Split an SSE message across multiple chunks
const mockChunks = [
"data: ",
createContentChunkData("partial"),
"\n\n",
DONE_CHUNK,
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("partial");
});
it("should handle [DONE] marker to terminate stream", async () => {
const mockChunks = [
createContentChunk("content"),
DONE_CHUNK,
createContentChunk("should not appear"),
];
global.fetch = vi.fn().mockResolvedValue({
ok: true,
headers: new Headers(),
body: createMockStream(mockChunks),
});
const result = await TTDStreamFetch({
url: "https://api.example.com/stream",
messages: [],
});
expect(result.generatedResponse).toBe("content");
});
});
});
@@ -0,0 +1,658 @@
import {
addMessages,
getLastAssistantMessage,
getMessagesForLLM,
removeLastAssistantMessage,
updateAssistantContent,
} from "./chat";
import type { TChat } from "../types";
describe("chat utils", () => {
describe("updateAssistantContent", () => {
it("should update the last assistant message with new payload", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "assistant",
content: "Hi there",
timestamp: new Date("2024-01-01"),
},
],
};
const result = updateAssistantContent(chatHistory, {
content: "Hi there, how can I help?",
});
expect(result.messages[1].content).toBe("Hi there, how can I help?");
expect(result.messages[1].id).toBe("2"); // ID should remain the same
});
it("should update only the last assistant message when multiple exist", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "First assistant message",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "user",
content: "User message",
timestamp: new Date("2024-01-01"),
},
{
id: "3",
type: "assistant",
content: "Second assistant message",
timestamp: new Date("2024-01-01"),
},
],
};
const result = updateAssistantContent(chatHistory, {
content: "Updated second message",
});
expect(result.messages[0].content).toBe("First assistant message");
expect(result.messages[2].content).toBe("Updated second message");
});
it("should update isGenerating flag", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "Message",
timestamp: new Date("2024-01-01"),
isGenerating: false,
},
],
};
const result = updateAssistantContent(chatHistory, {
isGenerating: true,
});
expect(result.messages[0].isGenerating).toBe(true);
});
it("should update error information", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "Message",
timestamp: new Date("2024-01-01"),
},
],
};
const result = updateAssistantContent(chatHistory, {
error: "Something went wrong",
errorType: "network",
});
expect(result.messages[0].error).toBe("Something went wrong");
expect(result.messages[0].errorType).toBe("network");
});
it("should return unchanged chatHistory if no assistant message exists", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
],
};
const result = updateAssistantContent(chatHistory, {
content: "New content",
});
expect(result).toEqual(chatHistory);
});
it("should not mutate original chatHistory", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "Original",
timestamp: new Date("2024-01-01"),
},
],
};
const result = updateAssistantContent(chatHistory, {
content: "Updated",
});
expect(chatHistory.messages[0].content).toBe("Original");
expect(result.messages[0].content).toBe("Updated");
});
});
describe("getLastAssistantMessage", () => {
it("should return the last assistant message", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "assistant",
content: "Hi there",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getLastAssistantMessage(chatHistory);
expect(result).toEqual({
id: "2",
type: "assistant",
content: "Hi there",
timestamp: new Date("2024-01-01"),
});
});
it("should return the last assistant message when multiple exist", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "First",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "user",
content: "User",
timestamp: new Date("2024-01-01"),
},
{
id: "3",
type: "assistant",
content: "Second",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getLastAssistantMessage(chatHistory);
expect(result.id).toBe("3");
expect(result.content).toBe("Second");
});
it("should return undefined if no assistant message exists", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getLastAssistantMessage(chatHistory);
expect(result).toBeUndefined();
});
it("should return undefined for empty messages array", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = getLastAssistantMessage(chatHistory);
expect(result).toBeUndefined();
});
});
describe("addMessages", () => {
it("should add a single message with id and timestamp", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "user",
content: "Hello",
},
]);
expect(result.messages).toHaveLength(1);
expect(result.messages[0]).toMatchObject({
type: "user",
content: "Hello",
});
expect(result.messages[0].id).toBeDefined();
expect(result.messages[0].timestamp).toBeInstanceOf(Date);
});
it("should add multiple messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "user",
content: "Hello",
},
{
type: "assistant",
content: "Hi there",
},
]);
expect(result.messages).toHaveLength(2);
expect(result.messages[0].type).toBe("user");
expect(result.messages[1].type).toBe("assistant");
});
it("should append to existing messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Existing",
timestamp: new Date("2024-01-01"),
},
],
};
const result = addMessages(chatHistory, [
{
type: "assistant",
content: "New message",
},
]);
expect(result.messages).toHaveLength(2);
expect(result.messages[0].content).toBe("Existing");
expect(result.messages[1].content).toBe("New message");
});
it("should add warning messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "warning",
},
]);
expect(result.messages).toHaveLength(1);
expect(result.messages[0].type).toBe("warning");
});
it("should preserve additional message properties", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "assistant",
content: "Message",
isGenerating: true,
error: "Error text",
errorType: "parse",
},
]);
expect(result.messages[0].isGenerating).toBe(true);
expect(result.messages[0].error).toBe("Error text");
expect(result.messages[0].errorType).toBe("parse");
});
it("should not mutate original chatHistory", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "user",
content: "Hello",
},
]);
expect(chatHistory.messages).toHaveLength(0);
expect(result.messages).toHaveLength(1);
});
it("should generate unique IDs for each message", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = addMessages(chatHistory, [
{
type: "user",
content: "Message 1",
},
{
type: "assistant",
content: "Message 2",
},
]);
expect(result.messages[0].id).not.toBe(result.messages[1].id);
});
});
describe("removeLastAssistantMessage", () => {
it("should remove the last assistant message", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "assistant",
content: "Hi there",
timestamp: new Date("2024-01-01"),
},
{
id: "3",
type: "user",
content: "How are you?",
timestamp: new Date("2024-01-01"),
},
],
};
const result = removeLastAssistantMessage(chatHistory);
expect(result.messages).toHaveLength(2);
expect(result.messages[0].id).toBe("1");
expect(result.messages[1].id).toBe("3");
});
it("should remove only the last assistant message when multiple exist", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "First",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "user",
content: "User",
timestamp: new Date("2024-01-01"),
},
{
id: "3",
type: "assistant",
content: "Second",
timestamp: new Date("2024-01-01"),
},
],
};
const result = removeLastAssistantMessage(chatHistory);
expect(result.messages).toHaveLength(2);
expect(result.messages[0].id).toBe("1");
expect(result.messages[1].id).toBe("2");
});
it("should return unchanged chatHistory if no assistant message exists", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Hello",
timestamp: new Date("2024-01-01"),
},
],
};
const result = removeLastAssistantMessage(chatHistory);
expect(result).toEqual(chatHistory);
});
it("should handle empty messages array", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = removeLastAssistantMessage(chatHistory);
expect(result).toEqual(chatHistory);
});
it("should not mutate original chatHistory", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "Message",
timestamp: new Date("2024-01-01"),
},
],
};
const result = removeLastAssistantMessage(chatHistory);
expect(chatHistory.messages).toHaveLength(1);
expect(result.messages).toHaveLength(0);
});
});
describe("getMessagesForApi", () => {
it("should filter out messages with empty content", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "user",
content: "Valid question",
timestamp: new Date("2024-01-01"),
},
{
id: "3",
type: "assistant",
content: "",
timestamp: new Date("2024-01-01"),
},
{
id: "4",
type: "assistant",
content: "Valid answer",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getMessagesForLLM(chatHistory);
expect(result).toHaveLength(2);
expect(result[0].content).toBe("Valid question");
expect(result[1].content).toBe("Valid answer");
});
it("should return only user message if no assistant messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Question",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getMessagesForLLM(chatHistory);
expect(result).toHaveLength(1);
expect(result[0]).toEqual({
role: "user",
content: "Question",
});
});
it("should return only assistant messages if no user message", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "assistant",
content: "Answer",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getMessagesForLLM(chatHistory);
expect(result).toHaveLength(1);
expect(result[0]).toEqual({
role: "assistant",
content: "Answer",
});
});
it("should return empty array for empty messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [],
};
const result = getMessagesForLLM(chatHistory);
expect(result).toEqual([]);
});
it("should filter out warning messages", () => {
const chatHistory: TChat.ChatHistory = {
id: "chat-1",
currentPrompt: "",
messages: [
{
id: "1",
type: "user",
content: "Question",
timestamp: new Date("2024-01-01"),
},
{
id: "2",
type: "warning",
content: "warning",
timestamp: new Date("2024-01-01"),
},
],
};
const result = getMessagesForLLM(chatHistory);
expect(result).toHaveLength(1);
expect(result[0]).toEqual(
expect.objectContaining({
role: "user",
}),
);
});
});
});
@@ -0,0 +1,91 @@
import { findLastIndex, randomId } from "@excalidraw/common";
import type { LLMMessage, TChat } from "../types";
export const updateAssistantContent = (
chatHistory: TChat.ChatHistory,
payload: Partial<TChat.ChatMessage>,
) => {
const { messages } = chatHistory;
const lastAssistantIndex = findLastIndex(
messages,
(msg) => msg.type === "assistant",
);
if (lastAssistantIndex === -1) {
return chatHistory;
}
const lastMessage = messages[lastAssistantIndex];
const updatedMessages = messages.slice();
updatedMessages[lastAssistantIndex] = {
...lastMessage,
...payload,
};
return {
...chatHistory,
messages: updatedMessages,
};
};
export const getLastAssistantMessage = (chatHistory: TChat.ChatHistory) => {
const { messages } = chatHistory;
const lastAssistantIndex = findLastIndex(
messages,
(msg) => msg.type === "assistant",
);
return messages[lastAssistantIndex];
};
export const addMessages = (
chatHistory: TChat.ChatHistory,
messages: Array<Omit<TChat.ChatMessage, "id" | "timestamp">>,
) => {
const newMessages: Array<TChat.ChatMessage> = messages.map((message) => ({
...message,
id: randomId(),
timestamp: new Date(),
}));
return {
...chatHistory,
messages: [...chatHistory.messages, ...newMessages],
};
};
export const removeLastAssistantMessage = (chatHistory: TChat.ChatHistory) => {
const lastMsgIdx = (chatHistory.messages ?? []).findLastIndex(
(msg) => msg.type === "assistant",
);
if (lastMsgIdx !== -1) {
return {
...chatHistory,
messages: chatHistory.messages.filter((_, idx) => idx !== lastMsgIdx),
};
}
return chatHistory;
};
export const getMessagesForLLM = (
chatHistory: TChat.ChatHistory,
): LLMMessage[] => {
const messages: LLMMessage[] = [];
for (const msg of chatHistory.messages) {
if (msg.content && (msg.type === "user" || msg.type === "assistant")) {
messages.push({
role: msg.type,
content: msg.content,
});
}
}
return messages;
};
@@ -0,0 +1,214 @@
import { isValidMermaidSyntax } from "./mermaidValidation";
describe("isValidMermaidSyntax", () => {
describe("empty and whitespace content", () => {
it("should return false for empty string", () => {
expect(isValidMermaidSyntax("")).toBe(false);
});
it("should return false for whitespace-only content", () => {
expect(isValidMermaidSyntax(" ")).toBe(false);
expect(isValidMermaidSyntax("\n\n")).toBe(false);
expect(isValidMermaidSyntax("\t\t")).toBe(false);
});
});
describe("balanced brackets, braces, and parentheses", () => {
it("should return true for content with balanced brackets", () => {
expect(isValidMermaidSyntax("flowchart LR\nA[Start]")).toBe(true);
expect(isValidMermaidSyntax("A[Node] --> B[End]")).toBe(true);
expect(isValidMermaidSyntax("[[nested]]")).toBe(true);
});
it("should return true for content with balanced braces", () => {
expect(isValidMermaidSyntax("graph TD\nA{Decision}")).toBe(true);
expect(isValidMermaidSyntax("{{nested}}")).toBe(true);
});
it("should return true for content with balanced parentheses", () => {
expect(isValidMermaidSyntax("flowchart LR\nA(Round)")).toBe(true);
expect(isValidMermaidSyntax("((nested))")).toBe(true);
});
it("should return true for content with multiple balanced delimiters", () => {
expect(isValidMermaidSyntax("A[Node] --> B{Decision} --> C(End)")).toBe(
true,
);
expect(
isValidMermaidSyntax("flowchart\nA[Start] --> B{Check} --> C(Done)"),
).toBe(true);
});
});
describe("unbalanced brackets", () => {
it("should return false for single unclosed bracket", () => {
expect(isValidMermaidSyntax("flowchart LR\nA[Start")).toBe(false);
expect(isValidMermaidSyntax("A[Node")).toBe(false);
});
it("should return false for multiple unclosed brackets", () => {
expect(isValidMermaidSyntax("A[Node\nB[Another")).toBe(false);
expect(isValidMermaidSyntax("[[[text")).toBe(false);
});
it("should return false when closing brackets outnumber opening brackets", () => {
expect(isValidMermaidSyntax("A]")).toBe(false);
expect(isValidMermaidSyntax("text]]]")).toBe(false);
});
});
describe("unbalanced braces", () => {
it("should return false for single unclosed brace", () => {
expect(isValidMermaidSyntax("graph TD\nA{Decision")).toBe(false);
expect(isValidMermaidSyntax("A{Node")).toBe(false);
});
it("should return false for multiple unclosed braces", () => {
expect(isValidMermaidSyntax("A{Node\nB{Another")).toBe(false);
expect(isValidMermaidSyntax("{{{text")).toBe(false);
});
it("should return false when closing braces outnumber opening braces", () => {
expect(isValidMermaidSyntax("A}")).toBe(false);
expect(isValidMermaidSyntax("text}}}")).toBe(false);
});
});
describe("unbalanced parentheses", () => {
it("should return false for single unclosed parenthesis", () => {
expect(isValidMermaidSyntax("flowchart LR\nA(Round")).toBe(false);
expect(isValidMermaidSyntax("A(Node")).toBe(false);
});
it("should return false for multiple unclosed parentheses", () => {
expect(isValidMermaidSyntax("A(Node\nB(Another")).toBe(false);
expect(isValidMermaidSyntax("(((text")).toBe(false);
});
it("should return false when closing parentheses outnumber opening parentheses", () => {
expect(isValidMermaidSyntax("A)")).toBe(false);
expect(isValidMermaidSyntax("text)))")).toBe(false);
});
});
describe("incomplete patterns at end of line", () => {
it("should return false for arrow patterns", () => {
expect(isValidMermaidSyntax("A -->")).toBe(false);
expect(isValidMermaidSyntax("flowchart LR\nA --")).toBe(false);
expect(isValidMermaidSyntax("B --.")).toBe(false);
expect(isValidMermaidSyntax("C ==>")).toBe(false);
expect(isValidMermaidSyntax("D ==")).toBe(false);
expect(isValidMermaidSyntax("E ~~")).toBe(false);
});
it("should return false for colon patterns", () => {
expect(isValidMermaidSyntax("A::")).toBe(false);
expect(isValidMermaidSyntax("B:")).toBe(false);
});
it("should return false for pipe and ampersand patterns", () => {
expect(isValidMermaidSyntax("A|")).toBe(false);
expect(isValidMermaidSyntax("B&")).toBe(false);
});
it("should return true when incomplete patterns are not at the end", () => {
expect(isValidMermaidSyntax("A --> B")).toBe(true);
expect(isValidMermaidSyntax("A -- text --> B")).toBe(true);
expect(isValidMermaidSyntax("A: complete")).toBe(true);
expect(isValidMermaidSyntax("A & B")).toBe(true);
expect(isValidMermaidSyntax("A | B")).toBe(true);
});
it("should only check the last line for incomplete patterns", () => {
expect(isValidMermaidSyntax("A -->\nB --> C")).toBe(true);
expect(isValidMermaidSyntax("A:\nB --> C")).toBe(true);
});
});
describe("complex real-world scenarios", () => {
it("should return true for valid flowchart", () => {
const mermaid = `flowchart TD
Start[Start] --> Decision{Is it?}
Decision -->|Yes| End1[End 1]
Decision -->|No| End2[End 2]`;
expect(isValidMermaidSyntax(mermaid)).toBe(true);
});
it("should return true for valid sequence diagram", () => {
const mermaid = `sequenceDiagram
Alice->>John: Hello John
John-->>Alice: Great!`;
expect(isValidMermaidSyntax(mermaid)).toBe(true);
});
it("should return false for incomplete flowchart (unclosed bracket)", () => {
const mermaid = `flowchart TD
Start[Start --> Decision{Is it?}
Decision -->|Yes| End[End]`;
expect(isValidMermaidSyntax(mermaid)).toBe(false);
});
it("should return false for flowchart with incomplete arrow at end", () => {
const mermaid = `flowchart TD
Start[Start] --> Decision{Is it?}
Decision -->`;
expect(isValidMermaidSyntax(mermaid)).toBe(false);
});
it("should return true for diagram with multiple node types", () => {
const mermaid = `graph LR
A[Square] --> B(Round)
B --> C{Diamond}
C --> D[Square]`;
expect(isValidMermaidSyntax(mermaid)).toBe(true);
});
it("should return false for streaming content that is incomplete", () => {
// Simulates partial AI-generated content during streaming
expect(isValidMermaidSyntax("flowchart LR\nA[Start] --")).toBe(false);
expect(isValidMermaidSyntax("flowchart LR\nA[Start")).toBe(false);
expect(isValidMermaidSyntax("graph TD\nA{Decision")).toBe(false);
});
it("should return true for complete multi-line diagram", () => {
const mermaid = `graph TB
subgraph one
a1[First]
end
subgraph two
a2[Second]
end
a1 --> a2`;
expect(isValidMermaidSyntax(mermaid)).toBe(true);
});
});
describe("edge cases", () => {
it("should handle content with only delimiters", () => {
expect(isValidMermaidSyntax("[]")).toBe(true);
expect(isValidMermaidSyntax("{}")).toBe(true);
expect(isValidMermaidSyntax("()")).toBe(true);
expect(isValidMermaidSyntax("[")).toBe(false);
expect(isValidMermaidSyntax("{")).toBe(false);
expect(isValidMermaidSyntax("(")).toBe(false);
});
it("should handle mixed valid and invalid scenarios", () => {
expect(isValidMermaidSyntax("A[B] -->")).toBe(false);
expect(isValidMermaidSyntax("A[B --")).toBe(false);
expect(isValidMermaidSyntax("A{B:")).toBe(false);
});
it("should handle strings with special characters", () => {
expect(isValidMermaidSyntax("A[Node with spaces]")).toBe(true);
expect(
isValidMermaidSyntax("A[Node with 'quotes' and numbers 123]"),
).toBe(true);
});
it("should trim content before validation", () => {
expect(isValidMermaidSyntax(" A[Node] \n")).toBe(true);
expect(isValidMermaidSyntax("\n\nA[Node]\n\n")).toBe(true);
});
});
});
@@ -0,0 +1,41 @@
export const isValidMermaidSyntax = (content: string): boolean => {
const trimmed = content.trim();
if (!trimmed) {
return false;
}
const openBrackets = (trimmed.match(/\[/g) || []).length;
const closeBrackets = (trimmed.match(/\]/g) || []).length;
const openBraces = (trimmed.match(/\{/g) || []).length;
const closeBraces = (trimmed.match(/\}/g) || []).length;
const openParens = (trimmed.match(/\(/g) || []).length;
const closeParens = (trimmed.match(/\)/g) || []).length;
if (
openBrackets !== closeBrackets ||
openBraces !== closeBraces ||
openParens !== closeParens
) {
return false;
}
const lastLine = trimmed.split("\n").pop()?.trim() || "";
const incompletePatterns = [
/-->$/,
/--$/,
/-\.$/,
/==>$/,
/==$/,
/~~$/,
/::$/,
/:$/,
/\|$/,
/&$/,
];
if (incompletePatterns.some((pattern) => pattern.test(lastLine))) {
return false;
}
return true;
};
@@ -226,6 +226,25 @@
border-color: var(--color-primary);
}
&[disabled] {
cursor: not-allowed;
&:hover {
--background: var(--color-surface-mid);
background-color: var(--background);
}
&:active {
border-color: transparent;
}
@at-root .excalidraw.theme--dark#{&} {
&:hover {
--background: var(--color-surface-high);
}
}
}
svg {
width: var(--lg-icon-size);
height: var(--lg-icon-size);
+43 -19
View File
@@ -1594,26 +1594,18 @@ export const FontFamilyNormalIcon = createIcon(
modifiedTablerIconProps,
);
export const FontFamilyCodeIcon = createIcon(
<>
<g
clipPath="url(#a)"
stroke="currentColor"
strokeWidth="1.25"
strokeLinecap="round"
strokeLinejoin="round"
>
<path d="M5.833 6.667 2.5 10l3.333 3.333M14.167 6.667 17.5 10l-3.333 3.333M11.667 3.333 8.333 16.667" />
</g>
<defs>
<clipPath id="a">
<path fill="#fff" d="M0 0h20v20H0z" />
</clipPath>
</defs>
</>,
modifiedTablerIconProps,
export const codeIcon = createIcon(
<g strokeWidth="1.5">
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
<path d="M7 8l-4 4l4 4" />
<path d="M17 8l4 4l-4 4" />
<path d="M14 4l-4 16" />
</g>,
tablerIconProps,
);
export const FontFamilyCodeIcon = codeIcon;
export const TextAlignLeftIcon = createIcon(
<g
stroke="currentColor"
@@ -1865,6 +1857,27 @@ export const mermaidLogoIcon = createIcon(
/>,
);
// tabler-icons: refresh
export const RetryIcon = createIcon(
<g strokeWidth="1.5">
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
<path d="M20 11a8.1 8.1 0 0 0 -15.5 -2m-.5 -4v4h4" />
<path d="M4 13a8.1 8.1 0 0 0 15.5 2m.5 4v-4h-4" />
</g>,
tablerIconProps,
);
export const stackPushIcon = createIcon(
<g>
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
<path d="M6 10l-2 1l8 4l8 -4l-2 -1" />
<path d="M4 15l8 4l8 -4" />
<path d="M12 4v7" />
<path d="M15 8l-3 3l-3 -3" />
</g>,
tablerIconProps,
);
export const ArrowRightIcon = createIcon(
<g strokeWidth="1.25">
<path d="M4.16602 10H15.8327" />
@@ -1993,7 +2006,8 @@ export const searchIcon = createIcon(
tablerIconProps,
);
export const clockIcon = createIcon(
// clock-bolt
export const historyCommandIcon = createIcon(
<g strokeWidth={1.5}>
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
<path d="M20.984 12.53a9 9 0 1 0 -7.552 8.355" />
@@ -2003,6 +2017,16 @@ export const clockIcon = createIcon(
tablerIconProps,
);
// history
export const historyIcon = createIcon(
<g strokeWidth={1.5}>
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
<path d="M12 8l0 4l2 2" />
<path d="M3.05 11a9 9 0 1 1 .5 4m-.5 5v-5h5" />
</g>,
tablerIconProps,
);
export const microphoneIcon = createIcon(
<g strokeWidth={1.5}>
<path stroke="none" d="M0 0h24v24H0z" fill="none" />