// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: MIT

import { StyleMetrics } from "std-widgets.slint";

component SideBarItem inherits Rectangle {
    in property <bool> selected;
    in property <bool> has-focus;
    in-out property <string> text<=> label.text;
    callback clicked<=>touch.clicked;
    min-height: l.preferred-height;
    states [
        pressed when touch.pressed: {
        state.opacity: 0.8;
        }
        hover when touch.has-hover: {
            state.opacity: 0.6;
        }
        selected when root.selected: {
            state.opacity: 1;
        }
        focused when root.has-focus: {
            state.opacity: 0.8;
        }
    ]

    state := Rectangle {
        opacity: 0;
        background: StyleMetrics.window-background;
        animate opacity{ duration: 150ms;
        }

    }

    l := HorizontalLayout {
        y: (parent.height - self.height) / 2;
        padding: StyleMetrics.layout-padding;
        spacing: 0px;
        label := Text {
            color: StyleMetrics.default-text-color;
            vertical-alignment: center;
        }
    }

    touch := TouchArea {
        width: 100%;
        height: 100%;
    }
}

export component SideBar inherits Rectangle {
    in property <[string]> model: [];
    in property <string> title<=> label.text;
    out property <int> current-item: 0;
    out property <int> current-focused: fs.has-focus ? fs.focused-tab : -1;
    // The currently focused tab

    width: 180px;
    forward-focus: fs;
    accessible-role: tab;
    accessible-delegate-focus: root.current-focused >= 0 ? root.current-focused : root.current-item;
    Rectangle {
        background: StyleMetrics.window-background.darker(0.2);
        fs := FocusScope {
            key-pressed(event) => {
                if (event.text == "\n") {
                    root.current-item = root.current-focused;
                     return accept;
                }
                if (event.text == Key.UpArrow) {
                    self.focused-tab = Math.max(self.focused-tab - 1,  0);
                     return accept;
                }
                if (event.text == Key.DownArrow) {
                    self.focused-tab = Math.min(self.focused-tab + 1, root.model.length - 1);
                     return accept;
                }
                return reject;
            }
            key-released(event) => {
                if (event.text == " ") {
                    root.current-item = root.current-focused;
                     return accept;
                }
                return reject;
            }
            property <int> focused-tab: 0;
            x: 0;
            width: 0;
            // Do not react on clicks
        }
    }

    VerticalLayout {
        padding-top: StyleMetrics.layout-padding;
        padding-bottom: StyleMetrics.layout-padding;
        spacing: StyleMetrics.layout-spacing;
        alignment: start;
        label := Text {
            font-size: 16px;
            horizontal-alignment: center;
        }

        navigation := VerticalLayout {
            alignment: start;
            vertical-stretch: 0;
            for item [index] in root.model: SideBarItem {
                clicked => {
                    root.current-item = index;
                }
                has-focus: index == root.current-focused;
                text: item;
                selected: index == root.current-item;
            }
        }

        VerticalLayout {
            bottom := VerticalLayout {
                padding-left: StyleMetrics.layout-padding;
                padding-right: StyleMetrics.layout-padding;
                @children
            }
        }
    }
}