v10/dist/dev/dom/google-cast/utils.js

import { loadScript } from "@videojs/utils/dom";
//#region src/dom/google-cast/utils.ts
var InvalidStateError = class extends Error {};
var NotSupportedError = class extends Error {};
var NotFoundError = class extends Error {};
const GOOGLE_CAST_FRAMEWORK_URL = "https://www.gstatic.com/cv/js/sender/v1/cast_sender.js?loadCastFramework=1";
const HLS_RESPONSE_HEADERS = [
	"application/x-mpegURL",
	"application/vnd.apple.mpegurl",
	"audio/mpegurl"
];
var IterableWeakSet = class {
	#refs = /* @__PURE__ */ new Set();
	#seen = /* @__PURE__ */ new WeakMap();
	add(value) {
		if (this.#seen.has(value)) return this;
		const ref = new WeakRef(value);
		this.#seen.set(value, ref);
		this.#refs.add(ref);
		return this;
	}
	delete(value) {
		const ref = this.#seen.get(value);
		if (!ref) return false;
		this.#seen.delete(value);
		return this.#refs.delete(ref);
	}
	forEach(fn) {
		for (const ref of this.#refs) {
			const value = ref.deref();
			if (value) fn(value);
			else this.#refs.delete(ref);
		}
	}
};
function onCastApiAvailable(callback) {
	const whenDefined = () => customElements.whenDefined("google-cast-button").then(callback);
	if (!globalThis.chrome?.cast?.isAvailable) globalThis.__onGCastApiAvailable = whenDefined;
	else if (typeof cast === "undefined" || !cast.framework) whenDefined();
	else callback();
}
function requiresCastFramework() {
	return Boolean(globalThis.chrome);
}
async function loadCastFramework() {
	if (globalThis.chrome?.cast) return;
	await loadScript(GOOGLE_CAST_FRAMEWORK_URL);
}
function getCastContext() {
	return typeof cast === "undefined" ? void 0 : cast.framework?.CastContext.getInstance();
}
function currentSession() {
	return getCastContext()?.getCurrentSession();
}
function currentMedia() {
	return currentSession()?.getSessionObj().media[0] ?? void 0;
}
function editTracksInfo(request) {
	return new Promise((resolve, reject) => {
		currentMedia().editTracksInfo(request, resolve, reject);
	});
}
function getMediaStatus(request) {
	return new Promise((resolve, reject) => {
		currentMedia().getStatus(request, resolve, reject);
	});
}
const MEDIA_NAMESPACE = "urn:x-cast:com.google.cast.media";
let requestId = 0;
function setPlaybackRate(rate) {
	const media = currentMedia();
	return currentSession().sendMessage(MEDIA_NAMESPACE, {
		type: "SET_PLAYBACK_RATE",
		playbackRate: rate,
		mediaSessionId: media?.mediaSessionId,
		requestId: ++requestId
	});
}
function setCastOptions(options) {
	getCastContext().setOptions({
		...getDefaultCastOptions(),
		...options
	});
}
function getDefaultCastOptions() {
	return {
		receiverApplicationId: "CC1AD845",
		autoJoinPolicy: globalThis.chrome?.cast?.AutoJoinPolicy?.ORIGIN_SCOPED ?? "origin_scoped",
		androidReceiverCompatible: false,
		language: "en-US",
		resumeSavedSession: true
	};
}
function getFormat(segment) {
	if (!segment) return void 0;
	const match = segment.match(/\.([a-zA-Z0-9]+)(?:\?.*)?$/);
	return match ? match[1] : null;
}
function parsePlaylistUrls(playlistContent) {
	const lines = playlistContent.split("\n");
	const urls = [];
	for (let i = 0; i < lines.length; i++) if (lines[i].trim().startsWith("#EXT-X-STREAM-INF")) {
		const nextLine = lines[i + 1] ? lines[i + 1].trim() : "";
		if (nextLine && !nextLine.startsWith("#")) urls.push(nextLine);
	}
	return urls;
}
function parseSegment(playlistContent) {
	return playlistContent.split("\n").find((line) => !line.trim().startsWith("#") && line.trim() !== "");
}
async function isHls(url) {
	if (!url) return false;
	if (/\.m3u8?(\?.*)?$/i.test(url)) return true;
	if (url.startsWith("blob:")) return false;
	try {
		const contentType = (await fetch(url, { method: "HEAD" })).headers.get("Content-Type");
		if (!contentType) return false;
		const normalizedContentType = contentType.toLowerCase().split(";")[0].trim();
		return HLS_RESPONSE_HEADERS.some((header) => normalizedContentType === header.toLowerCase());
	} catch (err) {
		console.error("Error while trying to get the Content-Type of the manifest", err);
		return false;
	}
}
async function getPlaylistSegmentFormat(url) {
	try {
		const mainManifestContent = await (await fetch(url)).text();
		let availableChunksContent = mainManifestContent;
		const playlists = parsePlaylistUrls(mainManifestContent);
		if (playlists.length > 0) {
			const chosenPlaylistUrl = new URL(playlists[0], url).toString();
			availableChunksContent = await (await fetch(chosenPlaylistUrl)).text();
		}
		return getFormat(parseSegment(availableChunksContent));
	} catch (err) {
		console.error("Error while trying to parse the manifest playlist", err);
		return;
	}
}
//#endregion
export { InvalidStateError, IterableWeakSet, NotFoundError, NotSupportedError, currentMedia, currentSession, editTracksInfo, getCastContext, getMediaStatus, getPlaylistSegmentFormat, isHls, loadCastFramework, onCastApiAvailable, requiresCastFramework, setCastOptions, setPlaybackRate };

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