// Jellyfin Web's supported window plugin API supplies the native playback manager.
window.DecoderChannelPlayback = async () => class DecoderChannelPlayback {
    constructor({ playbackManager, toast, appRouter, loading, events, appHost }) {
        this.id = 'decoder-channel-playback';
        this.name = 'Decoder channel playback';
        this.type = 'integration';
        // Limit only this provider's web live TV negotiation, preserving the shared client profile.
        if (appHost?.getDeviceProfile && !appHost.getDeviceProfile.decoderH264Policy) {
            const originalProfile = appHost.getDeviceProfile;
            const getDeviceProfile = async function (item, options) {
                const profile = await originalProfile.call(this, item, options);
                const api = window.ApiClient;
                if (!profile || item?.Type !== 'TvChannel' || window.NativeShell ||
                    playbackManager.getCurrentPlayer()?.isLocalPlayer === false || !api?.getCurrentUserId() ||
                    (item.ServerId && item.ServerId !== api.serverId())) return profile;
                try {
                    // Fresh policy per negotiation; an unavailable endpoint preserves native behavior.
                    let timeout;
                    const request = api.ajax({ type: 'GET', dataType: 'json',
                        url: api.getUrl('DecoderIntegration/WebPlaybackPolicy', { channelId: item.Id }) });
                    const policy = await Promise.race([request, new Promise(resolve => { timeout = setTimeout(() => resolve(null), 2000); })])
                        .finally(() => clearTimeout(timeout));
                    if (!policy?.IsEnigmaChannel || !policy.PreferH264) return profile;
                    const video = p => p.Type === 'Video' && (!p.Context || p.Context === 'Streaming');
                    const h264 = p => (p.VideoCodec || '').split(',').some(c => c.trim().toLowerCase() === 'h264');
                    if (!profile.TranscodingProfiles?.some(p => video(p) && h264(p))) return profile;
                    const copy = JSON.parse(JSON.stringify(profile));
                    copy.TranscodingProfiles = copy.TranscodingProfiles.filter(p => !video(p) || h264(p))
                        .map(p => video(p) ? { ...p, VideoCodec: 'h264' } : p);
                    return copy;
                } catch { return profile; }
            };
            getDeviceProfile.decoderH264Policy = true;
            try { appHost.getDeviceProfile = getDeviceProfile; }
            catch { /* A client exposing a read-only host keeps its native negotiation. */ }
        }
        // Jellyfin's globalize module sets <html lang> to the current user's UI
        // language, including an explicit choice that differs from browser locale.
        const fallback = { header: 'Television', preparing: 'Preparing channel…',
            checking_stream: 'Waiting for video and audio…', waiting_for_stream: 'Still waiting for a usable stream…',
            ready: 'Stream detected. Starting player…', failed: 'Unable to prepare the stream.', buffering: 'Buffering video…',
            help: 'The receiver may need several seconds. You can cancel or press Esc.', cancel: 'Stop and return to channels',
            elapsed: 'Waiting: {seconds} s', timeout: 'The channel is not providing video. Returning to the channel list.',
            play_error: 'Unable to start the channel.' };
        let messages = fallback;
        const text = key => messages[key] || fallback[key];
        const loadMessages = async api => {
            let timer;
            try {
                const language = document.documentElement?.lang || '';
                const response = await Promise.race([
                    api.ajax({ type: 'GET', dataType: 'json', url: api.getUrl('DecoderIntegration/StartupMessages', { language }) }),
                    new Promise(resolve => { timer = setTimeout(() => resolve(null), 1000); })
                ]);
                return response?.Texts ? { ...fallback, ...response.Texts, StartupTimeoutSeconds: response.StartupTimeoutSeconds } : fallback;
            } catch { return fallback; } finally { clearTimeout(timer); }
        };
        let generation = 0, starting = null, cancelButton = null, watcher = null, statusPanel = null, statusText = null, elapsedText = null, playbackSequence = 0;
        const clearControls = () => { clearInterval(watcher); watcher = null; cancelButton?.remove(); cancelButton = null; statusPanel?.remove(); statusPanel = statusText = elapsedText = null; };
        events.on(playbackManager, 'playbackstop', () => { if (!starting) clearControls(); });
        events.on(playbackManager, 'playbackstart', () => { ++playbackSequence; });
        document.addEventListener('fullscreenchange', () => {
            if (cancelButton) (document.fullscreenElement || document.body).append(cancelButton);
            if (statusPanel) (document.fullscreenElement || document.body).append(statusPanel);
        });
        const showStatus = (channelName) => {
            statusPanel = document.createElement('section'); statusPanel.id = 'decoderPlaybackStatus';
            statusPanel.setAttribute('role', 'status'); statusPanel.setAttribute('aria-live', 'polite');
            statusPanel.style.cssText = 'position:fixed;inset:0;z-index:2147483646;background:#101723;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:30px;box-sizing:border-box;color:#f4f7fc;text-align:center;font:18px system-ui';
            const icon = document.createElement('div'); icon.setAttribute('aria-hidden', 'true');
            icon.style.cssText = 'width:112px;height:76px;border:5px solid #58bfee;border-radius:14px;display:grid;place-items:center;color:#58bfee;font:bold 26px system-ui'; icon.textContent = 'TV';
            const title = document.createElement('h2'); title.textContent = channelName || text('header'); title.style.cssText = 'margin:6px;max-width:90vw;overflow-wrap:anywhere;font-size:28px';
            statusText = document.createElement('p'); statusText.textContent = text('preparing'); statusText.style.cssText = 'margin:0;font-size:22px';
            const help = document.createElement('p'); help.textContent = text('help'); help.style.cssText = 'max-width:560px;color:#b1bdce;margin:0;line-height:1.5';
            elapsedText = document.createElement('span'); elapsedText.setAttribute('aria-hidden', 'true'); elapsedText.style.cssText = 'color:#91a4bb;font-variant-numeric:tabular-nums';
            statusPanel.append(icon, title, statusText, help, elapsedText); document.body.append(statusPanel);
        };
        const stageText = phase => ['preparing', 'checking_stream', 'waiting_for_stream', 'ready', 'failed'].includes(phase) ? text(phase) : null;
        const leave = async () => {
            ++generation; starting = null; clearControls();
            try { await playbackManager.stop(); } finally { loading.hide(); await appRouter.show('livetv?tab=2'); }
        };
        const play = (id, serverId) => {
            if (starting) return starting;
            const ticket = ++generation;
            let request;
            request = (async () => {
                const api = window.ApiClient;
                if (!api?.getCurrentUserId() || (serverId && api.serverId() !== serverId)) return false;
                const [item, localized] = await Promise.all([api.getItem(api.getCurrentUserId(), id), loadMessages(api)]);
                if (ticket !== generation) return false;
                messages = localized;
                if (item.Type !== 'TvChannel') throw Error('Expected a TV channel');
                clearControls();
                cancelButton = document.createElement('button');
                cancelButton.id = 'decoderPlaybackExit'; cancelButton.textContent = text('cancel');
                cancelButton.style.cssText = 'position:fixed;right:16px;top:72px;z-index:2147483647;background:#252525;color:white;border:1px solid #aaa;border-radius:6px;padding:12px;font:16px system-ui;cursor:pointer';
                cancelButton.onclick = () => void leave(); document.body.append(cancelButton);
                showStatus(item.Name);
                // Use this provider's bounded startup budget; retain compatibility with older DLLs.
                let opened = false, opening = false, hasPlayed = false, polling = false, pollFailures = 0, lastPoll = -Infinity;
                const configuredWait = Number(messages.StartupTimeoutSeconds);
                const waitMs = Number.isFinite(configuredWait) && configuredWait >= 45 && configuredWait <= 225 ? configuredWait * 1000 : 45000;
                const began = Date.now(), deadline = began + waitMs, initialVideo = document.querySelector('video'), initialSource = initialVideo?.currentSrc, initialSequence = playbackSequence;
                watcher = setInterval(() => {
                    if (ticket !== generation) return;
                    const video = document.querySelector('video');
                    const player = playbackManager.getCurrentPlayer();
                    if (player?.isLocalPlayer === false) { clearControls(); return; }
                    const currentVideo = video && (video !== initialVideo || video.currentSrc !== initialSource || playbackSequence > initialSequence);
                    if (elapsedText) elapsedText.textContent = text('elapsed').replace('{seconds}', Math.floor((Date.now() - began) / 1000));
                    if (!opened && !opening && currentVideo && video.readyState >= 1 && player) {
                        opening = true;
                        Promise.resolve(appRouter.showVideoOsd()).then(() => { opened = true; })
                            .catch(() => { /* A cancelled/unready native route can be retried. */ })
                            .finally(() => { opening = false; });
                    }
                    if (currentVideo && video.readyState >= 2 && video.currentTime > 0) {
                        hasPlayed = true; if (statusPanel) statusPanel.style.display = 'none'; return;
                    }
                    if (hasPlayed) {
                        if (statusPanel) statusPanel.style.display = video?.paused ? 'none' : 'flex';
                        if (statusText) statusText.textContent = text('buffering');
                        return; // A later buffer underrun must not reuse the startup deadline.
                    }
                    if (currentVideo && video.readyState >= 1 && statusText) statusText.textContent = text('buffering');
                    if (!polling && pollFailures < 3 && Date.now() - lastPoll >= 1500 && api.ajax && api.getUrl) {
                        polling = true; lastPoll = Date.now();
                        Promise.resolve().then(() => api.ajax({ type: 'GET', dataType: 'json',
                            url: api.getUrl('DecoderIntegration/PlaybackProgress', { channelId: item.Id }) }))
                            .then(snapshot => {
                                if (ticket !== generation || hasPlayed || (currentVideo && video.readyState >= 1)) return;
                                const text = snapshot?.Available && Date.parse(snapshot.StartedUtc) >= began - 1000 && stageText(snapshot.Phase);
                                if (text && statusText) statusText.textContent = text;
                            }).catch(() => { ++pollFailures; })
                            .finally(() => { polling = false; });
                    }
                    if (Date.now() >= deadline) { void leave(); toast(text('timeout')); }
                }, 250);
                try { await playbackManager.play({ items: [item], fullscreen: true }); }
                catch (error) { if (ticket !== generation) return false; await leave(); throw error; }
                return true;
            })().finally(() => { if (starting === request) starting = null; });
            starting = request; return request;
        };
        window.addEventListener('keydown', event => {
            if (event.key === 'Escape' && cancelButton) { event.preventDefault(); event.stopImmediatePropagation(); void leave(); }
        }, true);
        let pending;
        const handleRoute = () => {
            clearTimeout(pending);
            const route = location.hash;
            const query = new URLSearchParams(route.split('?')[1] || '');
            if (route.split('?')[0].toLowerCase() === '#/livetv' && !query.has('tab')) {
                query.set('tab', '2');
                location.replace('#/livetv?' + query);
                return;
            }
            const id = query.get('decoderPlay');
            if (!id || !/^[a-f\d]{32}$|^[a-f\d-]{36}$/i.test(id)) return;
            const deadline = Date.now() + 30000;
            const attempt = async () => {
                if (location.hash !== route) return;
                if (!window.ApiClient?.getCurrentUserId()) {
                    if (Date.now() < deadline) pending = setTimeout(attempt, 250);
                    return;
                }
                query.delete('decoderPlay');
                history.replaceState(null, '', location.pathname + location.search + route.split('?')[0] + (query.size ? '?' + query : ''));
                try { await play(id, query.get('serverId')); }
                catch (error) { console.error('Decoder channel playback failed', error); toast(text('play_error')); }
            };
            void attempt();
        };
        window.addEventListener('hashchange', handleRoute);
        handleRoute();
        // Channel image/name clicks in native channel cards should also play immediately.
        document.addEventListener('click', event => {
            if (event.button !== 0 || event.ctrlKey || event.metaKey || event.shiftKey || event.altKey) return;
            const link = event.target.closest('a.cardImageContainer, a.itemAction.textActionButton');
            const card = link?.closest('[data-type="TvChannel"]');
            if (!card) return;
            const id = card.dataset.id;
            if (!id) return;
            event.preventDefault(); event.stopImmediatePropagation();
            void play(id, card.dataset.serverid).catch(error => {
                console.error('Decoder channel playback failed', error);
                toast(text('play_error'));
            });
        }, true);
    }
};