(function () {
    const PLUGIN_ID = "42c72919-d6ff-4f62-bb8c-0fac39efafdb";

    function getAlert() {
        if (typeof Dashboard !== 'undefined' && Dashboard.alert) {
            return (options) => Dashboard.alert(options);
        }
        return (options) => {
            const msg = typeof options === 'string' ? options : (options.text || options.title);
            alert(msg);
        };
    }

    const showMsg = getAlert();

    function createTextButton(text, className, onClick) {
        const btn = document.createElement('button');
        btn.type = 'button';
        btn.is = 'emby-button';
        btn.className = `emby-button raised ${className}`;
        btn.style.margin = '0.5em';
        btn.style.padding = '0.4em 1em';
        btn.innerHTML = `<span>${text}</span>`;
        btn.onclick = onClick;
        return btn;
    }

    function createIconButton(icon, title, className, onClick) {
        const btn = document.createElement('button');
        btn.type = 'button';
        btn.is = 'emby-button';
        btn.className = `button-flat detailButton emby-button ${className}`;
        btn.title = title;
        btn.innerHTML = `
            <div class="detailButton-content">
                <span class="material-icons detailButton-icon ${icon}" aria-hidden="true"></span>
            </div>
        `;
        btn.onclick = onClick;
        return btn;
    }

    async function injectUI() {
        // Check for onboarding
        await checkOnboarding();

        // 1. Item Detail Page
        const detailButtons = document.querySelector('.mainDetailButtons');
        if (detailButtons) {
            const itemId = getItemIdFromUrl();
            if (itemId) {
                // MovieNight Rating
                if (!document.querySelector('.btnMovieNightRate')) {
                    const rateBtn = createIconButton('star_rate', 'Rate on MovieNight', 'btnMovieNightRate', (e) => {
                        e.preventDefault(); e.stopPropagation(); showRatingDialog(itemId);
                    });
                    insertInDetailRow(detailButtons, rateBtn);
                }
                // Mark Viewed in MovieNight
                if (!document.querySelector('.btnMovieNightMarkViewed')) {
                    const viewedBtn = createIconButton('visibility', 'Mark Viewed in MovieNight', 'btnMovieNightMarkViewed', (e) => {
                        e.preventDefault(); e.stopPropagation(); submitViewed(itemId);
                    });
                    insertInDetailRow(detailButtons, viewedBtn);
                }
            }
        }

        // 2. Library Pages - Add text buttons to toolbar
        const toolBar = document.querySelector('.libraryPage:not(.itemDetailPage) .flex.align-items-center.justify-content-center.focuscontainer-x');
        if (toolBar && !document.querySelector('.btnMovieNightRecommend')) {
             toolBar.appendChild(createTextButton('Recommend Film', 'btnMovieNightRecommend', (e) => {
                 e.preventDefault(); showRecommendation();
             }));
             toolBar.appendChild(createTextButton('Add Movie (STRM)', 'btnMovieNightAddMovie', (e) => {
                 e.preventDefault(); showAddMovieDialog();
             }));
        }

        // 3. Home Page - Prepend a MovieNight section
        const homeSections = document.querySelector('.sections.homeSectionsContainer');
        if (homeSections && !document.querySelector('.movieNightHomeButtons')) {
            const section = document.createElement('div');
            section.className = 'verticalSection movieNightHomeButtons';
            section.style.padding = '0 var(--sidePadding)';
            section.innerHTML = `
                <div class="sectionTitleContainer" style="display:flex; align-items:center; justify-content:space-between;">
                    <h2 class="sectionTitle">MovieNight</h2>
                    <span class="movieNightSyncStatus" style="font-size:0.8em; opacity:0.7;"></span>
                </div>
                <div class="movieNightBtnContainer" style="display:flex; flex-wrap:wrap; margin-top:0.5em;"></div>
            `;
            const btnContainer = section.querySelector('.movieNightBtnContainer');
            btnContainer.appendChild(createTextButton('Recommend Film', 'btnMovieNightRecommend', showRecommendation));
            btnContainer.appendChild(createTextButton('Add Movie (STRM)', 'btnMovieNightAddMovie', showAddMovieDialog));
            btnContainer.appendChild(createTextButton('Sync Library', 'btnMovieNightSync', triggerSync));

            homeSections.insertBefore(section, homeSections.firstChild);
            updateSyncStatus();
        }
    }

    function insertInDetailRow(container, btn) {
        const moreBtn = container.querySelector('.btnMoreCommands');
        if (moreBtn) container.insertBefore(btn, moreBtn);
        else container.appendChild(btn);
    }

    function getItemIdFromUrl() {
        const queryString = window.location.hash.includes('?') ? window.location.hash.split('?')[1] : window.location.search;
        const params = new URLSearchParams(queryString);
        return params.get('id') || params.get('itemId');
    }

    function createOverlay() {
        const overlay = document.createElement('div');
        overlay.className = 'dialogBackdrop dialogBackdropOpened';
        overlay.style.zIndex = '99998';
        overlay.style.backgroundColor = 'rgba(0,0,0,0.7)';
        overlay.style.position = 'fixed';
        overlay.style.top = '0'; overlay.style.left = '0'; overlay.style.right = '0'; overlay.style.bottom = '0';
        overlay.style.backdropFilter = 'blur(8px)';
        overlay.style.opacity = '1';
        return overlay;
    }

    function createDialogBase(title) {
        const dialog = document.createElement('div');
        dialog.className = 'dialog';
        dialog.style.position = 'fixed';
        dialog.style.top = '50%'; dialog.style.left = '50%';
        dialog.style.transform = 'translate(-50%, -50%)';
        dialog.style.zIndex = '99999';
        dialog.style.padding = '2.5em';
        dialog.style.minWidth = '350px';
        dialog.style.backgroundColor = '#1a1a1a';
        dialog.style.borderRadius = '1.5em';
        dialog.style.color = 'white';
        dialog.style.boxShadow = '0 20px 50px rgba(0,0,0,0.8)';
        dialog.style.border = '1px solid #444';
        dialog.style.opacity = '1';

        dialog.innerHTML = `
            <h2 style="margin-top:0; text-align:center; font-weight:400; color:white; opacity:1;">${title}</h2>
            <div class="dialog-content" style="margin:1.5em 0; opacity:1;"></div>
            <div class="dialog-footer" style="display:flex; gap:1em; opacity:1;">
                <button is="emby-button" class="emby-button button-flat btnCancel" style="flex:1; color: white !important; opacity:1;">Cancel</button>
            </div>
        `;
        return dialog;
    }

    async function showRatingDialog(itemId) {
        const overlay = createOverlay();
        const dialog = createDialogBase('Rate on MovieNight');
        const content = dialog.querySelector('.dialog-content');

        content.innerHTML = `<div class="rating-grid" style="display:grid; grid-template-columns:repeat(5, 1fr); gap:0.8em;"></div>`;
        const grid = content.querySelector('.rating-grid');

        const cleanup = () => { if (overlay.parentNode) document.body.removeChild(overlay); };

        for (let i = 1; i <= 10; i++) {
            const btn = document.createElement('button');
            btn.type = 'button'; btn.is = 'emby-button';
            btn.className = 'emby-button raised';
            btn.innerText = i;
            btn.style.padding = '0.8em 0';
            btn.style.textAlign = 'center';
            btn.style.display = 'flex';
            btn.style.alignItems = 'center';
            btn.style.justifyContent = 'center';
            btn.style.fontSize = '1.2em';
            btn.onclick = async () => { cleanup(); await submitRating(itemId, i); };
            grid.appendChild(btn);
        }

        dialog.querySelector('.btnCancel').onclick = cleanup;
        overlay.onclick = (e) => { if (e.target === overlay) cleanup(); };
        overlay.appendChild(dialog);
        document.body.appendChild(overlay);
    }

    async function showAddMovieDialog() {
        const overlay = createOverlay();
        const dialog = createDialogBase('Add Movie (STRM)');
        const content = dialog.querySelector('.dialog-content');
        const footer = dialog.querySelector('.dialog-footer');

        content.innerHTML = `
            <div style="margin-bottom:1em;">
                <label style="display:block; margin-bottom:0.3em; font-size:0.9em; opacity:0.8; color:white;">Movie Title (Required)</label>
                <input type="text" class="emby-input txtTitle" style="width:100%; box-sizing:border-box; background:#333; border:1px solid #555; color:white; padding:0.6em;" placeholder="e.g. Inception">
            </div>
            <div style="display:flex; gap:1em; margin-bottom:1em;">
                <div style="flex:1;">
                    <label style="display:block; margin-bottom:0.3em; font-size:0.9em; opacity:0.8; color:white;">Year</label>
                    <input type="number" class="emby-input txtYear" style="width:100%; box-sizing:border-box; background:#333; border:1px solid #555; color:white; padding:0.6em;" placeholder="2010">
                </div>
                <div style="flex:2;">
                    <label style="display:block; margin-bottom:0.3em; font-size:0.9em; opacity:0.8; color:white;">IMDb ID</label>
                    <input type="text" class="emby-input txtImdb" style="width:100%; box-sizing:border-box; background:#333; border:1px solid #555; color:white; padding:0.6em;" placeholder="tt1375666">
                </div>
            </div>
            <div>
                <label style="display:block; margin-bottom:0.3em; font-size:0.9em; opacity:0.8; color:white;">Stream URL (Optional)</label>
                <input type="text" class="emby-input txtUrl" style="width:100%; box-sizing:border-box; background:#333; border:1px solid #555; color:white; padding:0.6em;" placeholder="http://...">
            </div>
        `;

        const btnAdd = document.createElement('button');
        btnAdd.className = 'emby-button raised button-submit';
        btnAdd.style.flex = '2';
        btnAdd.style.backgroundColor = '#0064d2';
        btnAdd.innerHTML = '<span>Add Film</span>';
        footer.insertBefore(btnAdd, footer.firstChild);

        const cleanup = () => { if (overlay.parentNode) document.body.removeChild(overlay); };

        btnAdd.onclick = async () => {
            const title = dialog.querySelector('.txtTitle').value;
            const year = dialog.querySelector('.txtYear').value;
            const imdbId = dialog.querySelector('.txtImdb').value;
            const url = dialog.querySelector('.txtUrl').value;
            if (!title) return;
            cleanup();
            await addMovie(title, url, year, imdbId);
        };

        dialog.querySelector('.btnCancel').onclick = cleanup;
        overlay.onclick = (e) => { if (e.target === overlay) cleanup(); };
        overlay.appendChild(dialog);
        document.body.appendChild(overlay);
        dialog.querySelector('.txtTitle').focus();
    }

    async function showOnboardingDialog() {
        const overlay = createOverlay();
        const dialog = createDialogBase('Welcome to MovieNight!');
        dialog.style.minWidth = '450px';
        const content = dialog.querySelector('.dialog-content');
        const footer = dialog.querySelector('.dialog-footer');

        content.innerHTML = `
            <p style="margin-bottom:1.5em; opacity:0.8; text-align:center;">Pick your preferences to get better recommendations.</p>
            <div style="margin-bottom:1.5em;">
                <label style="display:block; margin-bottom:0.6em; font-weight:600;">Favorite Genres</label>
                <div class="genre-chips" style="display:flex; flex-wrap:wrap; gap:0.5em;"></div>
            </div>
            <div style="margin-bottom:1.5em;">
                <label style="display:block; margin-bottom:0.6em; font-weight:600;">Preferred Eras</label>
                <div class="era-chips" style="display:flex; flex-wrap:wrap; gap:0.5em;"></div>
            </div>
            <div>
                <label style="display:block; margin-bottom:0.6em; font-weight:600;">Content Types</label>
                <div class="type-chips" style="display:flex; flex-wrap:wrap; gap:0.5em;"></div>
            </div>
        `;

        const genres = ["Action", "Comedy", "Drama", "Sci-Fi", "Horror", "Thriller", "Animation", "Documentary"];
        const eras = ["1980s", "1990s", "2000s", "2010s", "2020s"];
        const types = ["FILM", "SERIES"];

        const selections = { genres: new Set(), eras: new Set(), types: new Set() };

        const createChip = (text, container, type) => {
            const chip = document.createElement('div');
            chip.innerText = text;
            chip.style.cssText = 'padding:0.4em 1em; border-radius:2em; border:1px solid #444; cursor:pointer; font-size:0.9em; transition:all 0.2s;';
            chip.onclick = () => {
                if (selections[type].has(text)) {
                    selections[type].delete(text);
                    chip.style.backgroundColor = 'transparent';
                    chip.style.borderColor = '#444';
                } else {
                    selections[type].add(text);
                    chip.style.backgroundColor = '#0064d2';
                    chip.style.borderColor = '#0064d2';
                }
            };
            container.appendChild(chip);
        };

        genres.forEach(g => createChip(g, content.querySelector('.genre-chips'), 'genres'));
        eras.forEach(e => createChip(e, content.querySelector('.era-chips'), 'eras'));
        types.forEach(t => createChip(t, content.querySelector('.type-chips'), 'types'));

        const btnSave = document.createElement('button');
        btnSave.className = 'emby-button raised button-submit';
        btnSave.style.flex = '2';
        btnSave.style.backgroundColor = '#0064d2';
        btnSave.innerHTML = '<span>Save & Start</span>';
        footer.insertBefore(btnSave, footer.firstChild);

        const cleanup = () => { if (overlay.parentNode) document.body.removeChild(overlay); };

        btnSave.onclick = async () => {
            const payload = {
                weightedGenres: Object.fromEntries([...selections.genres].map(g => [g, 5])),
                eras: [...selections.eras],
                contentTypes: [...selections.types]
            };
            cleanup();
            await completeOnboarding(payload);
        };

        dialog.querySelector('.btnCancel').onclick = cleanup;
        overlay.onclick = (e) => { if (e.target === overlay) cleanup(); };
        overlay.appendChild(dialog);
        document.body.appendChild(overlay);
    }

    async function checkOnboarding() {
        if (window.movieNightOnboardingChecked) return;
        window.movieNightOnboardingChecked = true;

        const userId = ApiClient.getCurrentUserId();
        if (!userId) return;

        try {
            const prefs = await ApiClient.getJSON(ApiClient.getUrl(`MovieNight/Users/${userId}/Preferences`));
            if (!prefs || (!Object.keys(prefs.weightedGenres || {}).length && !prefs.eras?.length)) {
                showOnboardingDialog();
            }
        } catch (err) {
            if (err.status === 404) showOnboardingDialog();
        }
    }

    async function completeOnboarding(payload) {
        const userId = ApiClient.getCurrentUserId();
        try {
            await ApiClient.ajax({
                type: 'POST',
                url: ApiClient.getUrl(`MovieNight/Users/${userId}/Onboarding`),
                data: JSON.stringify(payload),
                contentType: 'application/json'
            });
            showMsg('Welcome! Your preferences have been saved.');
        } catch (err) {
            showMsg('Failed to save onboarding preferences.');
        }
    }

    async function showRecommendation() {
        const userId = ApiClient.getCurrentUserId();
        try {
            const response = await ApiClient.getJSON(ApiClient.getUrl(`MovieNight/Users/${userId}/Recommendations`));
            const recommendations = typeof response === 'string' ? JSON.parse(response) : response;

            if (recommendations && recommendations.length > 0) {
                const rec = recommendations[0];
                const film = rec.film || rec;
                showMsg({
                    title: 'MovieNight Recommendation',
                    text: `How about watching: ${film.title}?\n\nReason: ${rec.reasons?.join(', ') || 'Based on your preferences'}`
                });
            } else {
                showMsg('No recommendations found at the moment.');
            }
        } catch (err) {
            console.error('Failed to get recommendations', err);
            showMsg('Failed to get recommendations. Check your API token and MovieNight status.');
        }
    }

    async function addMovie(title, url, year, imdbId) {
        try {
            const data = { title, url };
            if (year) data.year = parseInt(year);
            if (imdbId) data.imdbId = imdbId;

            await ApiClient.ajax({
                type: 'POST',
                url: ApiClient.getUrl(`MovieNight/Films`),
                data: JSON.stringify(data),
                contentType: 'application/json'
            });
            showMsg(`STRM file created for "${title}". Refresh your library to see it.`);
        } catch (err) {
            console.error('Failed to create movie', err);
            showMsg('Failed to create movie. Ensure STRM output path is configured.');
        }
    }

    async function triggerSync() {
        try {
            await ApiClient.ajax({ type: 'POST', url: ApiClient.getUrl(`MovieNight/Sync`) });
            showMsg('Library sync triggered!');
            setTimeout(updateSyncStatus, 2000);
        } catch (err) {
            showMsg('Failed to trigger sync.');
        }
    }

    async function updateSyncStatus() {
        const statusEl = document.querySelector('.movieNightSyncStatus');
        if (!statusEl) return;
        try {
            const state = await ApiClient.getJSON(ApiClient.getUrl(`MovieNight/SyncState`));
            const states = Array.isArray(state) ? state : [];
            const latest = states
                .map(s => s.lastSuccessfulSyncAt || s.lastSyncedAt)
                .filter(Boolean)
                .sort()
                .pop();
            if (latest) {
                statusEl.innerText = `Last sync: ${new Date(latest).toLocaleString()}`;
            }
        } catch (err) { /* ignore */ }
    }

    async function submitRating(itemId, score) {
        const userId = ApiClient.getCurrentUserId();
        try {
            await ApiClient.ajax({
                type: 'POST',
                url: ApiClient.getUrl(`MovieNight/Users/${userId}/Ratings/Films/${itemId}`),
                data: JSON.stringify({ score: parseInt(score), note: 'From Jellyfin UI' }),
                contentType: 'application/json'
            });
            showMsg('Rating submitted to MovieNight!');
        } catch (err) {
            showMsg('Failed to submit rating.');
        }
    }

    async function submitViewed(itemId) {
        const userId = ApiClient.getCurrentUserId();
        try {
            await ApiClient.ajax({
                type: 'POST',
                url: ApiClient.getUrl(`MovieNight/Users/${userId}/Library/Films/${itemId}/Viewed`),
                data: JSON.stringify({ watchedAt: new Date().toISOString() }),
                contentType: 'application/json'
            });
            showMsg('Marked as viewed in MovieNight!');
        } catch (err) {
            showMsg('Failed to mark as viewed.');
        }
    }

    let timeout;
    const throttledInject = () => {
        if (timeout) return;
        timeout = setTimeout(() => {
            injectUI();
            timeout = null;
        }, 100);
    };

    const observer = new MutationObserver(throttledInject);
    observer.observe(document.body, { childList: true, subtree: true });

    injectUI();
})();