feat: support google maps

packages/element/src/embeddable.ts

@@ -130,6 +130,86 @@ const parseGoogleDriveVideoLink = (
   }
 };
 
+const isGoogleMapsURL = (url: string): boolean => {
+  try {
+    const { hostname, pathname } = new URL(
+      url.startsWith("http") ? url : `https://${url}`,
+    );
+    const bareHostname = hostname.replace(/^www\./, "");
+
+    return (
+      (bareHostname === "google.com" || bareHostname === "maps.google.com") &&
+      (pathname === "/maps" || pathname.startsWith("/maps/"))
+    );
+  } catch (error) {
+    return false;
+  }
+};
+
+const getGoogleMapsZoom = (zoomOrDistance: string): string | null => {
+  const match = zoomOrDistance.match(/^(\d+(?:\.\d+)?)(z|km|m)$/);
+  if (!match) {
+    return null;
+  }
+  const value = Number(match[1]);
+  if (match[2] === "z") {
+    return `${Math.round(value)}`;
+  }
+  const meters = value * (match[2] === "km" ? 1000 : 1);
+  return `${Math.max(
+    3,
+    Math.min(21, Math.round(16 - Math.log2(meters / 500))),
+  )}`;
+};
+
+const parseGoogleMapsLink = (url: string): string | null => {
+  if (!isGoogleMapsURL(url)) {
+    return null;
+  }
+
+  try {
+    const urlObj = new URL(url.startsWith("http") ? url : `https://${url}`);
+
+    if (
+      urlObj.pathname.startsWith("/maps/embed") ||
+      urlObj.searchParams.get("output") === "embed"
+    ) {
+      return urlObj.toString();
+    }
+
+    const [, lat, lng, zoomOrDistance] =
+      urlObj.pathname.match(
+        /@(-?\d+(?:\.\d+)?),(-?\d+(?:\.\d+)?),([^/?#,]+)/,
+      ) || [];
+    const place = urlObj.pathname.match(/^\/maps\/place\/([^/]+)/)?.[1];
+    const query =
+      urlObj.searchParams.get("q") ||
+      (place ? decodeURIComponent(place).replace(/\+/g, " ") : null) ||
+      (lat && lng ? `${lat},${lng}` : null);
+
+    if (!query) {
+      return null;
+    }
+
+    const embedURL = new URL("https://www.google.com/maps");
+    embedURL.searchParams.set("q", query);
+    embedURL.searchParams.set("output", "embed");
+
+    if (lat && lng) {
+      embedURL.searchParams.set("ll", `${lat},${lng}`);
+    }
+
+    const zoom = zoomOrDistance ? getGoogleMapsZoom(zoomOrDistance) : null;
+    if (zoom) {
+      embedURL.searchParams.set("z", zoom);
+    }
+
+    return embedURL.toString();
+  } catch (error) {
+    return null;
+  }
+};
+
 const ALLOWED_DOMAINS = new Set([
   "youtube.com",
   "youtu.be",
@@ -280,6 +360,27 @@ export const getEmbedLink = (
     };
   }
 
+  if (isGoogleMapsURL(link)) {
+    const googleMapsLink = parseGoogleMapsLink(link);
+    if (googleMapsLink) {
+      link = googleMapsLink;
+      aspectRatio = { w: 600, h: 450 };
+      embeddedLinkCache.set(originalLink, {
+        link,
+        intrinsicSize: aspectRatio,
+        type,
+        sandbox: { allowSameOrigin },
+      });
+      return {
+        link,
+        intrinsicSize: aspectRatio,
+        type,
+        sandbox: { allowSameOrigin },
+      };
+    }
+    return null;
+  }
+
   const figmaLink = link.match(RE_FIGMA);
   if (figmaLink) {
     type = "generic";
@@ -508,6 +609,7 @@ export const embeddableURLValidator = (
   if (!url) {
     return false;
   }
+
   if (validateEmbeddable != null) {
     if (typeof validateEmbeddable === "function") {
       const ret = validateEmbeddable(url);
@@ -533,5 +635,5 @@ export const embeddableURLValidator = (
     }
   }
 
-  return !!matchHostname(url, ALLOWED_DOMAINS);
+  return isGoogleMapsURL(url) || !!matchHostname(url, ALLOWED_DOMAINS);
 };

packages/element/tests/embeddable.test.ts

@@ -1,4 +1,8 @@
-import { embeddableURLValidator, getEmbedLink } from "../src/embeddable";
+import {
+  embeddableURLValidator,
+  getEmbedLink,
+  maybeParseEmbedSrc,
+} from "../src/embeddable";
 
 describe("YouTube timestamp parsing", () => {
   it("should parse YouTube URLs with timestamp in seconds", () => {
@@ -231,3 +235,62 @@ describe("Google Drive video embedding", () => {
     ).toBe(true);
   });
 });
+
+describe("Google Maps embedding", () => {
+  const regularUrl =
+    "https://www.google.com/maps/place/26-432+Jab%C5%82onica,+Poland/@51.356302,20.797168,1921m/data=!3m2!1e3!4b1!4m15!1m8!3m7!1s0x47186c0e0e7578fd:0xe80d19a1ef6ad853!2zMjctMTAwIEnFgsW8YSwgUG9sYW5k!3b1!8m2!3d51.16305!4d21.23991!16zL20vMGM1ZnJ3!3m5!1s0x47184db43a4a5df9:0x6a2b8e648f9dc694!8m2!3d51.3562959!4d20.8023178!16s%2Fm%2F04q6t9r?entry=ttu";
+  const officialEmbedSrc =
+    "https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d8363.540754033738!2d20.79716795156659!3d51.356301987021546!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x47184db43a4a5df9%3A0x6a2b8e648f9dc694!2s26-432%20Jab%C5%82onica%2C%20Poland!5e1!3m2!1sen!2scz!4v1778159513974!5m2!1sen!2scz";
+
+  it("should preserve official Google Maps embed links", () => {
+    const parsedSrc = maybeParseEmbedSrc(
+      `<iframe src="${officialEmbedSrc}" width="600" height="450"></iframe>`,
+    );
+    const result = getEmbedLink(parsedSrc);
+
+    expect(embeddableURLValidator(parsedSrc, undefined)).toBe(true);
+    expect(result).toBeTruthy();
+    expect(result?.type).toBe("generic");
+    if (result?.type === "generic") {
+      expect(result.link).toBe(officialEmbedSrc);
+    }
+    expect(result?.intrinsicSize).toEqual({ w: 600, h: 450 });
+  });
+
+  it("should normalize regular Google Maps place links", () => {
+    const result = getEmbedLink(regularUrl);
+
+    expect(embeddableURLValidator(regularUrl, undefined)).toBe(true);
+    expect(result).toBeTruthy();
+    expect(result?.type).toBe("generic");
+    if (result?.type !== "generic") {
+      return;
+    }
+
+    const embedURL = new URL(result.link);
+    expect(embedURL.origin).toBe("https://www.google.com");
+    expect(embedURL.pathname).toBe("/maps");
+    expect(embedURL.searchParams.get("q")).toBe(
+      decodeURIComponent("26-432%20Jab%C5%82onica%2C%20Poland"),
+    );
+    expect(embedURL.searchParams.get("output")).toBe("embed");
+    expect(embedURL.searchParams.get("ll")).toBe("51.356302,20.797168");
+    expect(embedURL.searchParams.get("z")).toBe("14");
+    expect(result.intrinsicSize).toEqual({ w: 600, h: 450 });
+  });
+
+  it("should reject non-Maps Google pages and fail closed for unsupported Maps pages", () => {
+    expect(
+      embeddableURLValidator("https://www.google.com/search?q=maps", undefined),
+    ).toBe(false);
+
+    const unsupportedMapsUrl = "https://www.google.com/maps/about/";
+    expect(embeddableURLValidator(unsupportedMapsUrl, undefined)).toBe(true);
+    expect(getEmbedLink(unsupportedMapsUrl)).toBe(null);
+
+    const malformedMapsUrl = `https://www.google.com/maps/@${"0,0,".repeat(
+      1000,
+    )}`;
+    expect(embeddableURLValidator(malformedMapsUrl, undefined)).toBe(true);
+  });
+});