document.addEventListener("DOMContentLoaded", function () {
    const lastChapter = localStorage.getItem("lastAccessedChapter");
    console.log("Last Save Chapter: "+ lastChapter)

    if (lastChapter) {
        const chapter = JSON.parse(lastChapter);
        loadChapter({ chapterTitle: chapter.chapterTitle }); // Auto-load last accessed chapter
    }
  
    const loginLink = document.getElementById('login-link'); // Login button container
    const userInfoDiv = document.getElementById('user-info'); // User info container (after login)
    const logoutButton = document.getElementById('logout-button'); // Logout button
    const userNameDisplay = document.getElementById('user-name'); // Where to display the username
    const userButton = document.getElementById('user-button'); // User initials button
    const token = localStorage.getItem('authToken'); // Get token from localStorage
  
    const menuButton = document.getElementById("menuButton");
    const sidebar = document.querySelector(".sidebar");
    const overlay = document.querySelector(".overlay");
    const content = document.querySelector("#content"); // Main content area
    const nextBtn = document.getElementById('nextChapterButton');
    if (nextBtn) nextBtn.addEventListener('click', loadNextChapter);

    const loadingContainer = document.getElementById('loading-container'); // Loading container
    const loadingBar = document.getElementById('loading-bar'); // Loading bar
    const loadingText = document.getElementById('loading-text'); // Loading text
  
    // Show loading bar when the page starts
    loadingContainer.style.display = 'flex';

    // Fetch and initialize data from MongoDB
    fetch('https://thevera-botveradb.hf.space/get_chapter_titles')
    // fetch('https://thevera-botveradb.hf.space/get_chapters')
      .then(response => response.json())
      .then(responseData => {
        if (responseData.success) {
          initializePage(responseData.data);
        } else {
          console.error('Error loading data:', responseData.message);
        }
        // Hide the loading bar after data is loaded
        loadingContainer.style.display = 'none';
      })
      .catch(error => {
        console.error('Error loading data:', error);
        // Hide the loading bar in case of error
        loadingContainer.style.display = 'none';
      });

    if (token) {
      // Check token validity with backend
      fetch('https://thevera-botveradb.hf.space/validate_token', {
        method: 'GET',
        headers: {
          'Authorization': `Bearer ${token}`
        }
      })
      .then(response => response.json())
      .then(data => {
        if (data.message === "Token is valid!") {
          // Token is valid, decode it to get user info
          const userObject = jwt_decode(token); // Decode the token to get user info
          const email = userObject.email; // Assuming the email is stored in the token
          const username = email.split('@')[0]; // Extract username (first part of email)
  
          // Update UI with user's info
          userNameDisplay.innerText = username; // Display first part of email as username
          userInfoDiv.style.display = 'block'; // Show user info section
  
          // Change user button to show user's initials
          const userInitials = username.charAt(0).toUpperCase(); // Get first letter of username
          userButton.innerHTML = `<div class="user-initial">${userInitials}</div>`; // Display initials
  
          // Show the logout button and hide the login link
          logoutButton.style.display = 'inline';
          loginLink.style.display = 'none';

          // **Update UI for Mobile**
          document.getElementById('user-info-mobile').style.display = 'block';
          document.getElementById('user-initials').innerText = userInitials;
          document.getElementById('user-name-mobile').innerText = email.split('@')[0];
          document.getElementById('logout-button-mobile').style.display = 'block';
          document.getElementById('loginButton').style.display = 'none';
        } else {
          // Token is invalid, clear invalid token
          localStorage.removeItem('authToken');
          console.log('Invalid token, user not logged in.');
          loginLink.style.display = 'inline'; // Show login link
        }
      })
      .catch(error => {
        console.error('Error:', error);
        // Handle the error (e.g., network issues)
        localStorage.removeItem('authToken'); // Clear token in case of error
        loginLink.style.display = 'inline'; // Show login link
      });
    } else {
      // No token found, show login link
      console.log('No token found, user not logged in.');
      loginLink.style.display = 'inline';
    }
  
    // Logout functionality
    if (logoutButton) {
      logoutButton.onclick = function() {
        localStorage.removeItem('authToken'); // Clear token
        window.location.reload(); // Refresh page to update UI
      };
    }
  
    // Optional: If you want to show the dropdown when clicking on the user initials button
    if (userButton) {
      userButton.addEventListener('click', () => {
        const userDropdown = document.getElementById('user-dropdown');
        userDropdown.style.display = userDropdown.style.display === 'block' ? 'none' : 'block';
      });
    }
  

    // Sidebar toggle for mobile and desktop
    menuButton.addEventListener("click", function () {
        if (sidebar && overlay && content) {
            sidebar.classList.toggle("shown");
            overlay.classList.toggle("active");

            // Adjust content margin when sidebar is visible
            if (sidebar.classList.contains("shown")) {
                content.style.marginLeft = "250px";  // Sidebar width
            } else {
                content.style.marginLeft = "0";
            }
        }
    });

    // Close sidebar on overlay click for mobile view
    overlay.addEventListener("click", function () {
        if (sidebar && overlay && content) {
            sidebar.classList.remove("shown");
            overlay.classList.remove("active");
            content.style.marginLeft = "0";  // Reset content margin
        }
    });
});


// Mobile Menu Buttion js code
document.addEventListener("DOMContentLoaded", function () {
    const menuButton = document.getElementById("menuButton");
    const mobileMenu = document.getElementById("mobileMenu");

    if (menuButton && mobileMenu) {
        menuButton.addEventListener("click", function (event) {
            event.stopPropagation(); // Prevents immediate close
            mobileMenu.classList.toggle("show"); // Toggle menu visibility
        });

        // Close menu when clicking outside
        document.addEventListener("click", function (event) {
            if (!mobileMenu.contains(event.target) && !menuButton.contains(event.target)) {
                mobileMenu.classList.remove("show");
            }
        });
    } else {
        console.error("Menu button or mobile menu not found in the DOM.");
    }
});

// ===== Voice Manager (persisted TTS settings) =====
// const TTS_STORE_KEY = 'ttsSettings_v1';
// const defaultTTS = { voiceURI: null, rate: 0.9, pitch: 0.9 };

// function getTTSSettings(){
//   try { return { ...defaultTTS, ...(JSON.parse(localStorage.getItem(TTS_STORE_KEY))||{}) }; }
//   catch { return { ...defaultTTS }; }
// }
// function saveTTSSettings(patch){
//   const now = { ...getTTSSettings(), ...(patch||{}) };
//   localStorage.setItem(TTS_STORE_KEY, JSON.stringify(now));
//   return now;
// }

// function waitForVoices(timeoutMs = 1500) {
//   return new Promise(resolve => {
//     const have = speechSynthesis.getVoices();
//     if (have && have.length) return resolve(have);
//     const onVoices = () => {
//       const v = speechSynthesis.getVoices();
//       if (v && v.length) {
//         speechSynthesis.removeEventListener('voiceschanged', onVoices);
//         resolve(v);
//       }
//     };
//     speechSynthesis.addEventListener('voiceschanged', onVoices);
//     setTimeout(() => {
//       speechSynthesis.removeEventListener('voiceschanged', onVoices);
//       resolve(speechSynthesis.getVoices() || []);
//     }, timeoutMs);
//   });
// }

// function preferredSort(a,b){
//   // Prefer sa-IN > hi-IN > en-IN, then by name
//   const rank = v => (/sa-IN/i.test(v.lang)?0:(/hi-IN/i.test(v.lang)?1:(/en-IN/i.test(v.lang)?2:3)));
//   const r = rank(a)-rank(b);
//   if (r!==0) return r; return a.name.localeCompare(b.name);
// }

// async function populateVoiceSelect(){
//   const select = document.getElementById('voiceSelect');
//   if (!select) return;
//   select.innerHTML = '';
//   const voices = await waitForVoices();
//   voices.sort(preferredSort).forEach(v=>{
//     const opt = document.createElement('option');
//     opt.value = v.voiceURI; // persistable id
//     opt.textContent = `${v.name} — ${v.lang}`;
//     select.appendChild(opt);
//   });
//   const st = getTTSSettings();
//   if (st.voiceURI){
//     const found = [...select.options].some(o=>o.value===st.voiceURI);
//     if (found) select.value = st.voiceURI;
//   } else if (voices.length){
//     // auto-pick first preferred
//     saveTTSSettings({ voiceURI: voices[0].voiceURI });
//     select.value = voices[0].voiceURI;
//   }
// }

// function attachVoiceUI(){
//   const select = document.getElementById('voiceSelect');
//   const refresh = document.getElementById('voiceRefresh');
//   const sample = document.getElementById('voiceSample');
//   const rate = document.getElementById('voiceRate');
//   const pitch = document.getElementById('voicePitch');
//   const st = getTTSSettings();
//   if (rate) rate.value = st.rate; if (pitch) pitch.value = st.pitch;

//   if (select) select.addEventListener('change', ()=> saveTTSSettings({ voiceURI: select.value }));
//   if (rate) rate.addEventListener('input', ()=> saveTTSSettings({ rate: parseFloat(rate.value) }));
//   if (pitch) pitch.addEventListener('input', ()=> saveTTSSettings({ pitch: parseFloat(pitch.value) }));
//   if (refresh) refresh.addEventListener('click', populateVoiceSelect);
//   if (sample) sample.addEventListener('click', async ()=>{
//     try { await speakClientSide("ॐ श्रीं नमः | यह एक नमूना आवाज़ है ।"); } catch(e){ console.warn(e); }
//   });
// }

// function resolveSelectedVoice(voices){
//   const st = getTTSSettings();
//   let v = voices.find(v=>v.voiceURI===st.voiceURI);
//   if (!v){
//     // best-effort locale pick
//     v = voices.sort(preferredSort)[0] || null;
//     if (v) saveTTSSettings({ voiceURI: v.voiceURI });
//   }
//   return v;
// }

// Call once on load (safe no-op if controls are not present)
// (function initVoiceControls(){
//   if (!('speechSynthesis' in window)) return;
//   populateVoiceSelect();
//   attachVoiceUI();
// })();


// Handle toggle for "Shastra Collection" header
document.getElementById('shastraHeader').addEventListener('click', function() {
  const shastraList = document.getElementById('shastraList');
  shastraList.classList.toggle('hidden');  // Toggle the 'hidden' class on the sidebar
});


let chaptersArray = [];
let currentChapterIndex = -1; // Initialize with -1 as default to indicate no chapter is loaded yet
let resumeTime = 0;
let player;

function initializePage(data) {
    const shastraList = document.getElementById('shastraList');
    if (!shastraList) {
        console.error("Element with ID 'shastraList' not found.");
        return;
    }

    Object.keys(data).forEach((collection) => {
        // Create main group (e.g., Bhagwat Mahapuran)
        const mainGroupItem = document.createElement('li');
        mainGroupItem.classList.add('main-group');
        mainGroupItem.innerHTML = `
          <i class="fas fa-book" style="color:#4b6cb7;"></i> 
          <span class="group-title">${collection}</span>
        `;

        const itemList = document.createElement('ul');
        itemList.classList.add('nested-list');
        itemList.style.display = 'none';

        // Toggle display of main group chapters
        mainGroupItem.addEventListener('click', () => {
            itemList.style.display = itemList.style.display === 'none' ? 'block' : 'none';
        });

        data[collection].forEach((item) => {
            if (item.skandaTitle) {
                // Create Skanda group with + icon
                const skandaGroup = document.createElement('li');
                skandaGroup.classList.add('skanda-group');
                skandaGroup.innerHTML = `
                  <i class="fas fa-plus toggle-icon" style="color:#888;"></i> 
                  <i class="fas fa-folder" style="color:#f4b400;"></i> 
                  <span class="skanda-title">${item.skandaTitle}</span>
                `;

                const skandaChapterList = document.createElement('ul');
                skandaChapterList.classList.add('nested-list');
                skandaChapterList.style.display = 'none';

                item.chapters.forEach((chapter) => {
                    const chapterItem = document.createElement('li');
                    chapterItem.classList.add('chapter-item');
                    chapterItem.innerHTML = `
                      <i class="fas fa-file-alt" style="color:#5e5e5e;"></i> 
                      ${chapter.chapterTitle}
                    `;
                    chapterItem.addEventListener('click', (event) => {
                        event.stopPropagation();
                        fetchChapterData(chapter.chapterTitle).then(chapterDetails => {
                            if (chapterDetails) {
                                loadChapter(chapterDetails);
                                closeSidebarOnMobile();
                            }
                        });
                    });
                    skandaChapterList.appendChild(chapterItem);
                    chaptersArray.push({ chapterTitle: chapter.chapterTitle });
                });

                skandaGroup.addEventListener('click', (event) => {
                    event.stopPropagation();
                    skandaChapterList.style.display = skandaChapterList.style.display === 'none' ? 'block' : 'none';
                    const toggleIcon = skandaGroup.querySelector('.toggle-icon');
                    if (toggleIcon) {
                        toggleIcon.classList.toggle('fa-plus');
                        toggleIcon.classList.toggle('fa-minus');
                    }
                });

                skandaGroup.appendChild(skandaChapterList);
                itemList.appendChild(skandaGroup);
            } else {
                const chapterItem = document.createElement('li');
                chapterItem.classList.add('chapter-item');
                chapterItem.innerHTML = `<i class="fas fa-file-alt"></i> ${item.chapterTitle}`;
                chapterItem.addEventListener('click', (event) => {
                    event.stopPropagation();
                    fetchChapterData(item.chapterTitle).then(chapterDetails => {
                        if (chapterDetails) {
                            loadChapter(chapterDetails);
                            closeSidebarOnMobile();
                        }
                    });
                });
                itemList.appendChild(chapterItem);
                chaptersArray.push({ chapterTitle: item.chapterTitle });
            }
        });
        
        mainGroupItem.appendChild(itemList);
        shastraList.appendChild(mainGroupItem);
    });
  // Place this right after the forEach loop ends inside initializePage
  if (!localStorage.getItem("menuTipShown")) {
    const tip = document.createElement('div');
    tip.innerText = "📚 Browse chapters here!";
    tip.style.cssText = `
      position: fixed;
      left: 20px;
      top: 70px;
      background: #fff8e1;
      padding: 8px 12px;
      border-radius: 5px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.2);
      z-index: 9999;
      font-weight: bold;
    `;
    document.body.appendChild(tip);
    setTimeout(() => {
      tip.remove();
      localStorage.setItem("menuTipShown", "true");
    }, 4000);
  }
}

function extractSkandaNumber(skandaTitle) {
  // e.g. "Skanda 1" or "Skanda One" or "Skanda I"
  const match = skandaTitle?.match(/(\d+)/);
  return match ? parseInt(match[1], 10) : 0;
}


function initializePageOld(data) {
    const shastraList = document.getElementById('shastraList');
    if (!shastraList) {
        console.error("Element with ID 'shastraList' not found.");
        return;
    }

    Object.keys(data).forEach((collection) => {
        const mainGroupItem = document.createElement('li');
        mainGroupItem.textContent = collection;
        mainGroupItem.classList.add('main-group');

        const itemList = document.createElement('ul');
        itemList.classList.add('nested-list');
        itemList.style.display = 'none';

        data[collection].forEach((item) => {
            if (item.skandaTitle) {
                const skandaGroup = document.createElement('li');
                // skandaGroup.textContent = item.skandaTitle;
                skandaGroup.innerHTML = `<i class="fas fa-folder"></i> ${item.skandaTitle}`;
                skandaGroup.classList.add('skanda-group');

                const skandaChapterList = document.createElement('ul');
                skandaChapterList.classList.add('nested-list');
                skandaChapterList.style.display = 'none';

                item.chapters.forEach((chapter) => {
                    const chapterItem = document.createElement('li');
                    // chapterItem.textContent = chapter.chapterTitle;
                    chapterItem.innerHTML = `<i class="fas fa-file-alt"></i> ${chapter.chapterTitle}`;
                    chapterItem.classList.add('chapter-item');
                    chapterItem.addEventListener('click', (event) => {
                        event.stopPropagation();
                        fetchChapterData(chapter.chapterTitle).then(chapterDetails => {
                            if (chapterDetails) {
                                loadChapter(chapterDetails);
                                closeSidebarOnMobile();
                            }
                        });
                    });
                    skandaChapterList.appendChild(chapterItem);

                    // Populate chaptersArray with chapter metadata (title only for now)
                    chaptersArray.push({ chapterTitle: chapter.chapterTitle });
                });

                skandaGroup.addEventListener('click', (event) => {
                    event.stopPropagation();
                    skandaChapterList.style.display = skandaChapterList.style.display === 'none' ? 'block' : 'none';
                });

                skandaGroup.appendChild(skandaChapterList);
                itemList.appendChild(skandaGroup);
            } else {
                const chapterItem = document.createElement('li');
                chapterItem.textContent = item.chapterTitle;
                chapterItem.classList.add('chapter-item');
                chapterItem.addEventListener('click', (event) => {
                    event.stopPropagation();
                    fetchChapterData(item.chapterTitle).then(chapterDetails => {
                        if (chapterDetails) {
                            loadChapter(chapterDetails);
                            closeSidebarOnMobile();
                        }
                    });
                });
                itemList.appendChild(chapterItem);

                // Populate chaptersArray with chapter metadata (title only for now)
                chaptersArray.push({ chapterTitle: item.chapterTitle });
            }
        });

        mainGroupItem.addEventListener('click', () => {
            itemList.style.display = itemList.style.display === 'none' ? 'block' : 'none';
        });

        mainGroupItem.appendChild(itemList);
        shastraList.appendChild(mainGroupItem);
    });
}


async function fetchChapterData(chapterTitle) {
    try {
        const response = await fetch(`https://thevera-botveradb.hf.space/get_chapter_details?chapterTitle=${encodeURIComponent(chapterTitle)}`);
        const result = await response.json();

        if (response.ok && result.success) {
            return result.data; // Return chapter details
        } else {
            console.error("Error fetching chapter details:", result.message);
            return null;
        }
    } catch (error) {
        console.error("Error in fetchChapterData:", error);
        return null;
    }
}

// Function to fetch audio URL
async function fetchAudioUrl(chapterTitle) {
    try {
        const response = await fetch(`https://thevera-botveradb.hf.space/get_audio_url?chapterTitle=${encodeURIComponent(chapterTitle)}`);
        const result = await response.json();
        
        if (response.ok && result.success) {
            return result.audioUrl;
        } else {
            console.error('Error fetching audio:', result.message);
            return null;
        }
    } catch (error) {
        console.error('Error fetching audio:', error);
        return null;
    }
}

async function loadChapter(chapter) {
    console.log("Loading chapter...");
    console.log(chapter.chapterTitle);
  
    // Save the last accessed chapter in localStorage
    localStorage.setItem("lastAccessedChapter", JSON.stringify({
        chapterTitle: chapter.chapterTitle
    }));
  
    const chapterTitle = document.getElementById('chapterTitle');
    const slokeContent = document.getElementById('slokeContent');
    const videoPlayer = document.getElementById('videoPlayer');
    const transcriptBlock = document.getElementById('transcript-content');

    // Ensure the elements are loaded correctly
    if (!chapterTitle || !slokeContent || !videoPlayer || !transcriptBlock) {
        console.error("Missing elements in chapter display.");
        return;
    }

    // Reset content
    chapterTitle.textContent = 'Loading...'; // Temporary loading message
    slokeContent.innerHTML = '';
    videoPlayer.src = '';
    transcriptBlock.innerHTML = ''; // Clear all transcript content

    try {
        // Fetch chapter details from the backend
        const chapterDetails = await fetchChapterData(chapter.chapterTitle);

        if (!chapterDetails) {
            chapterTitle.textContent = 'Chapter details not found.';
            return;
        }

        // Update UI with chapter details
        chapterTitle.textContent = chapterDetails.chapterTitle + " / " + chapterDetails.about || 'Chapter Details';
        
        // Process and display the slokes
        const slokesArray = chapterDetails.slokes ? chapterDetails.slokes.split('\n') : [];
        slokesArray.forEach((slokeText) => {
            const slokeElement = document.createElement('p');
            slokeElement.classList.add('sloke-text');
            // slokeElement.innerHTML = slokeText.replace(/श्लोक \d+:/g, '<strong>$&</strong>');
            slokeElement.innerHTML = slokeText.replace(/(श्लोक \d+:|अर्थ \d+:)/g, '<strong>$&</strong>');


            const speakIcon = createSpeakIcon(slokeText);
            slokeElement.appendChild(speakIcon);
            slokeContent.appendChild(slokeElement);
        });

        // Update video and transcript blocks
        // videoPlayer.src = chapterDetails.video || '';
        loadYouTubeVideo(chapterDetails.video);
        
        const transcriptArray = chapterDetails.transcript ? chapterDetails.transcript.split('\n') : [];
        transcriptArray.forEach((transcriptText) => {
            const transcriptElement = document.createElement('p');
            transcriptElement.classList.add('transcript-text');
            transcriptElement.textContent = transcriptText; // Add transcript text
            transcriptBlock.appendChild(transcriptElement);
        });

        // Show the content blocks
        document.querySelector('.main').classList.add('active');
        document.querySelector('.sloke-block').classList.add('active');
        document.querySelector('.video-block').classList.add('active');
        document.querySelector('.transcript-block').classList.add('active');

        // Setup play buttons
        setupPlayAllButton(slokesArray);
        setupPlayAllTranscriptButton(transcriptArray);

        // Auto-click to minimize the sidebar group
        const chapterGroup = document.querySelector(`.main-group`);
        if (chapterGroup) {
            chapterGroup.click(); // This simulates a click to collapse the group
        }

        // Update currentChapterIndex for "Next Chapter" functionality
        currentChapterIndex = chaptersArray.findIndex(ch => ch.chapterTitle === chapter.chapterTitle);
        console.log("Updated Current Index:", currentChapterIndex);
        document.getElementById('shastraHeader').click(); // Simulate a click on the header
        
    } catch (error) {
        console.error("Error loading chapter details:", error);
        chapterTitle.textContent = 'Failed to load chapter details. Please try again.';
    }
}


function loadYouTubeVideo(videoUrl) {
    if (!videoUrl) {
        console.warn("[Video] No video URL provided");
        return;
    }

    const videoIdMatch = videoUrl.match(/\/embed\/([a-zA-Z0-9_-]+)/);
    if (!videoIdMatch) {
        console.error("[Video] Invalid video URL format", videoUrl);
        return;
    }

    const videoId = videoIdMatch[1];
    currentVideoId = videoId;
    const storageKey = `videoTime_${videoId}`;

    // resumeTime = parseFloat(localStorage.getItem(storageKey)) || 0;
    resumeTime = Math.max((parseFloat(localStorage.getItem(storageKey)) || 0) - 5, 0);
    console.log(`[Video] Loading ID: ${videoId}, Resuming at: ${resumeTime}s`);

    if (player) {
        player.loadVideoById({ videoId, startSeconds: resumeTime });
    } else {
        player = new YT.Player('videoPlayer', {
            height: '315',
            width: '100%',
            videoId,
            playerVars: {
                autoplay: 1,
                controls: 1,
                start: resumeTime
            },
            events: {
                'onReady': (event) => {
                    console.log("[Player] onReady");
                    event.target.seekTo(resumeTime, true);
                    event.target.playVideo();
                },
                'onStateChange': onPlayerStateChange
            }
        });
    }
}


function onPlayerStateChange(event) {
    if (event.data === YT.PlayerState.PLAYING) {
        console.log("[Player] Playing");
        // Save playback time every 5 seconds
        clearInterval(window.saveTimeInterval);
        window.saveTimeInterval = setInterval(() => {
            if (player && currentVideoId) {
                const time = player.getCurrentTime();
                localStorage.setItem(`videoTime_${currentVideoId}`, time);
                console.log(`[Resume Save] ${currentVideoId}: ${time.toFixed(1)}s`);
            }
        }, 5000);
    }

    if (event.data === YT.PlayerState.ENDED) {
        console.log("[Player] Video Ended. Clearing resume time.");
        localStorage.removeItem(`videoTime_${currentVideoId}`);
        clearInterval(window.saveTimeInterval);
    }
}


function loadNextChapter() {
    console.log("Next Chapter clicked...");
    if (currentChapterIndex + 1 < chaptersArray.length) {
        currentChapterIndex++; // Increment currentChapterIndex to move to the next chapter
        // Auto-click to minimize the sidebar group
        const chapterGroup = document.querySelector(`.main-group`);
        if (chapterGroup) {
            chapterGroup.click(); // This simulates a click to collapse the group
        }
        loadChapter(chaptersArray[currentChapterIndex]);
    } else {
        alert("This is the last chapter.");
    }
}

function closeSidebarOnMobile() {
    const sidebar = document.querySelector(".sidebar");
    const overlay = document.querySelector(".overlay");
    if (window.innerWidth < 768 && sidebar && overlay) {
        sidebar.classList.remove("shown");
        overlay.classList.remove("active");
    }
}



// Other functions such as createSpeakIcon, cleanSlokText, playTTS, and setupPlayAllButton remain as you provided

function createSpeakIcon(slokeText) {
    const speakIcon = document.createElement('i');
    speakIcon.classList.add('fas', 'fa-volume-up', 'speak-icon');
    speakIcon.setAttribute('title', 'Speak Slok');
    speakIcon.addEventListener('click', () => {
        console.log(`Speaking: ${slokeText}`);
        playTTS(slokeText);
    });
    return speakIcon;
}

function cleanSlokText(text) {
    // Regex to match and remove introductory (e.g., "श्लोक 1:") and ending markers (e.g., "१")
    // return text.replace(/श्लोक \d+: /g, '').replace(/ \d+$/g, '');
    return text.replace(/(श्लोक \d+:|अर्थ \d+:)/g,'').replace(/ \d+$/g, '');
}

let currentSlokeIndex = 0; // Track the current sloke index
const audioPlayer = document.getElementById('audioPlayer');

// Play all slokes function (replace your existing setupPlayAllButton function)
function setupPlayAllButton(slokesArray) {
    const playAllButton = document.getElementById('playAllButton');
    
    playAllButton.onclick = async () => {
        currentSlokeIndex = 0; // Reset to start
        playNextSloke(slokesArray);
    };
}

// Function to play each sloke in sequence
async function playNextSloke(slokesArray) {
    if (currentSlokeIndex >= slokesArray.length) {
        return; // End if all slokes have been played
    }

    // Clean and highlight the current sloke text
    // const slokeText = cleanSlokText(slokesArray[currentSlokeIndex]);
    const slokeText = slokesArray[currentSlokeIndex];
    highlightCurrentSloke(currentSlokeIndex);

    // Generate TTS audio for the current sloke text
    playTTS(slokeText).then(() => {
        // Move to the next sloke after the current one finishes
        currentSlokeIndex++;
        playNextSloke(slokesArray);
    });
}

// Function to highlight the current sloke and scroll it into view
function highlightCurrentSloke(index) {
    const slokeElements = document.querySelectorAll('.sloke-text'); // Assume each sloke text has this class

    // Remove previous highlights
    slokeElements.forEach(el => el.classList.remove('highlight'));

    // Highlight and scroll the current sloke
    const currentSloke = slokeElements[index];
    if (currentSloke) {
        currentSloke.classList.add('highlight');
        currentSloke.scrollIntoView({ behavior: "smooth", block: "center" });
    }
}


let currentTranscriptIndex = 0; // Track the current transcript index
// Setup Play All for Transcript
function setupPlayAllTranscriptButton(transcriptArray) {
    const playAllTranscriptButton = document.getElementById('playTranscriptButton');

    playAllTranscriptButton.onclick = async () => {
        currentTranscriptIndex = 0; // Reset to start
        playNextTranscript(transcriptArray);
    };
}

// Function to play each transcript in sequence
async function playNextTranscript(transcriptArray) {
    if (currentTranscriptIndex >= transcriptArray.length) {
        return; // End if all transcripts have been played
    }

    // Highlight the current transcript text
    highlightCurrentTranscript(currentTranscriptIndex);

    // Generate TTS audio for the current transcript text
    const transcriptText = transcriptArray[currentTranscriptIndex];
    playTTS(transcriptText).then(() => {
        // Move to the next transcript after the current one finishes
        currentTranscriptIndex++;
        playNextTranscript(transcriptArray);
    });
}
// Function to highlight the current transcript text
function highlightCurrentTranscript(index) {
    const allTranscripts = document.querySelectorAll('.transcript-text');
    allTranscripts.forEach((transcript, i) => {
        if (i === index) {
            transcript.classList.add('highlight'); // Add highlight class
        } else {
            transcript.classList.remove('highlight'); // Remove highlight class
        }
    });
}

let currentAudio; // Global variable to hold the audio object for server-generated audio
let isPlaying = false; // Track play/pause state for playback
let currentUtterance; // Track current SpeechSynthesisUtterance for sa-IN playback

// --- Voice helpers ---
function pickPreferredVoice(voices) {
  const tests = [
    v => /sa-IN/i.test(v.lang) && /(male|deep|bass|india)/i.test(v.name),
    v => /sa-IN/i.test(v.lang),
    v => /hi-IN/i.test(v.lang) && /(male|deep|bass|india)/i.test(v.name),
    v => /hi-IN/i.test(v.lang),
    v => /en-IN/i.test(v.lang) && /(male|deep|bass|india)/i.test(v.name),
    v => /en-IN/i.test(v.lang),
  ];
  for (const t of tests) {
    const found = voices.find(t);
    if (found) return found;
  }
  return voices[0] || null;
}

function waitForVoices(timeoutMs = 1500) {
  return new Promise(resolve => {
    const have = speechSynthesis.getVoices();
    if (have && have.length) return resolve(have);
    const onVoices = () => {
      const v = speechSynthesis.getVoices();
      if (v && v.length) {
        speechSynthesis.removeEventListener('voiceschanged', onVoices);
        resolve(v);
      }
    };
    speechSynthesis.addEventListener('voiceschanged', onVoices);
    setTimeout(() => {
      speechSynthesis.removeEventListener('voiceschanged', onVoices);
      resolve(speechSynthesis.getVoices() || []);
    }, timeoutMs);
  });
}

async function speakClientSide(text) {
  const voices = await waitForVoices();
  if (!voices.length) throw new Error('No TTS voices available');

  const voice = pickPreferredVoice(voices);
  const langFallback = voice?.lang || 'sa-IN';

  // Stop any previous utterances
  try { speechSynthesis.cancel(); } catch {}

  // Split by pipe/comma and add small pauses after delimiters
  const parts = text.split(/(\||,)/).map(s => s.trim()).filter(Boolean);

  for (const chunk of parts) {
    const u = new SpeechSynthesisUtterance(chunk);
    if (voice) u.voice = voice;
    u.lang = voice?.lang || langFallback;
    u.rate = 0.9;   // or your saved rate
    u.pitch = 0.9;  // or your saved pitch
    u.volume = 1.0;

    await new Promise((res, rej) => {
      u.onend = res;
      u.onerror = rej;
      speechSynthesis.speak(u);
    });

    if (chunk === '|' || chunk === ',') {
      await new Promise(r => setTimeout(r, 220));
    }
  }
}

// Speak text in segments (pauses at "|" and ",")
async function speakClientSideOld(text) {
  const st = ttsGet();
  const all = await getAllVoices();
  if (!all.length) throw new Error('No TTS voices available');

  // pick language preference sa-IN -> hi-IN -> en-IN
  const prefLangs = ['sa-IN', 'hi-IN', 'en-IN'];
  let chosenLang = prefLangs.find(l => st.byLang[l]?.voiceURI) || prefLangs.find(l => all.some(v => v.lang && v.lang.startsWith(l)));
  if (!chosenLang) chosenLang = all[0].lang || 'hi-IN';

  let voice = null;
  const savedURI = st.byLang[chosenLang]?.voiceURI;
  if (savedURI) voice = all.find(v => v.voiceURI === savedURI) || null;
  if (!voice) {
    const list = voicesForLang(all, chosenLang);
    voice = list[0] || all[0] || null;
  }

  const parts = text.split(/(\||,)/).map(s => s.trim()).filter(Boolean);
  for (const chunk of parts) {
    const u = new SpeechSynthesisUtterance(chunk);
    if (voice) u.voice = voice;
    u.lang = voice?.lang || chosenLang;
    u.rate = st.rate;
    u.pitch = st.pitch;
    await new Promise((res, rej)=>{ u.onend = res; u.onerror = rej; speechSynthesis.speak(u); });
    if (chunk === '|' || chunk === ',') await new Promise(r=>setTimeout(r,220));
  }
}


async function playTTS(text) {
  console.log('Speaking mantra');
  if (!text || text.trim() === '') {
    console.error('No text provided');
    return;
  }

  const cleanText = typeof cleanSlokText === 'function' ? cleanSlokText(text) : text;

  // Helper to play a URL in your existing <audio id="audioPlayer">
  async function playAudioUrl(audioUrl, revokeWhenDone = false) {
    return new Promise((resolve, reject) => {
      const audioPlayer = document.getElementById('audioPlayer');
      if (!audioPlayer) return reject(new Error('audioPlayer not found'));

      audioPlayer.onerror = (event) => reject(event);
      audioPlayer.onended = () => {
        try { if (revokeWhenDone && audioUrl.startsWith('blob:')) URL.revokeObjectURL(audioUrl); } catch {}
        resolve();
      };
      audioPlayer.src = audioUrl;
      audioPlayer.load();
      audioPlayer.play().catch(reject);
    });
  }

  // 1) Try saved audio (pass ORIGINAL text so backend can read “श्लोक N”)
  try {
    const savedUrl = await getAudioUrlForSloke(text);
    if (savedUrl) {
      console.log('Playing saved audio from:', savedUrl);
      await playAudioUrl(savedUrl);
      return; // done
    }
  } catch (e) {
    console.warn('Saved audio lookup failed:', e);
    // fall through to browser TTS
  }

  // 2) Browser TTS (client-side)
  try {
    if ('speechSynthesis' in window) {
      await speakClientSide(cleanText); // uses your voice picker or preference
      return; // done
    }
  } catch (e) {
    console.warn('Client-side TTS failed, will try server fallback:', e);
  }

  // 3) Server-side fallback
  try {
    const serverUrl = "https://thevera-botveradb.hf.space/generate_sanskrit_audio";
    const response = await fetch(serverUrl, {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ cleanText })
    });
    if (!response.ok) throw new Error('Server TTS fetch failed');

    const audioBlob = await response.blob();
    const blobUrl = URL.createObjectURL(audioBlob);
    await playAudioUrl(blobUrl, true);
  } catch (e) {
    console.error('Server TTS failed:', e);
  }
}


async function playTTSold(text) {
  console.log('Speaking mantra');
  if (!text || text.trim() === '') { console.error('No text provided'); return; }

  const cleanText = typeof cleanSlokText === 'function' ? cleanSlokText(text) : text;

  // 1) Try saved audio first
  try {
    if (typeof getAudioUrlForSloke === 'function') {
      const savedUrl = await getAudioUrlForSloke(text);
      // const savedUrl = await getAudioUrlForSloke(cleanText);
      if (savedUrl) {
        console.log('Playing saved audio from:', savedUrl);
        await new Promise((resolve, reject) => {
          const audioPlayer = document.getElementById('audioPlayer');
          audioPlayer.onerror = (event) => { console.error('Saved audio playback error:', event); reject(event); };
          audioPlayer.onended = () => { isPlaying = false; if (savedUrl.startsWith('blob:')) URL.revokeObjectURL(savedUrl); resolve(); };
          audioPlayer.src = savedUrl; audioPlayer.load(); isPlaying = true; audioPlayer.play();
        });
        return;
      }
    }
  } catch (e) { console.warn('Saved audio not found, trying client TTS...', e); }

  // 2) Browser TTS with selected voice
  try {
    if ('speechSynthesis' in window) { await speakClientSide(cleanText); return; }
  } catch (e) { console.warn('Client-side TTS failed, trying server TTS...', e); }

  // 3) Server fallback
  console.warn('Using server-side TTS fallback.');
  const serverUrl = "https://thevera-botveradb.hf.space/generate_sanskrit_audio";
  try {
    const response = await fetch(serverUrl, { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ cleanText }) });
    if (!response.ok) throw new Error('Failed to fetch audio from server');
    const audioBlob = await response.blob(); const blobUrl = URL.createObjectURL(audioBlob);
    await new Promise((resolve, reject) => {
      const audioPlayer = document.getElementById('audioPlayer');
      audioPlayer.onerror = (event) => { console.error('Server-based TTS playback error:', event); reject(event); };
      audioPlayer.onended = () => { isPlaying = false; URL.revokeObjectURL(blobUrl); resolve(); };
      audioPlayer.src = blobUrl; isPlaying = true; audioPlayer.play();
    });
  } catch (error) { console.error('Error calling server:', error); }
}


// Function to fetch the audio URL for a given sloke
async function getAudioUrlForSlokeOld(text) {
    try {
        const response = await fetch(`https://thevera-botveradb.hf.space/get_audio_url?slokeText=${encodeURIComponent(text)}`);
        if (!response.ok) {
            throw new Error('Failed to fetch audio URL');
        }
        const data = await response.json();
        return data.audioUrl;  // Assuming the API returns { audioUrl: 'URL' }
    } catch (error) {
        console.error('Error fetching audio URL:', error);
        return null;  // Return null if an error occurs, so it falls back to server-side TTS
    }
}
async function getAudioUrlForSloke(originalText) {
  try {
    const url = `https://thevera-botveradb.hf.space/get_audio_url?slokeText=${encodeURIComponent(originalText)}`;
    const response = await fetch(url);

    // 404 just means "no saved audio" — return null quietly
    if (response.status === 404) return null;

    if (!response.ok) {
      // Other non-OK statuses: treat as no saved audio (no console noise)
      return null;
    }

    const data = await response.json();
    // API returns { success, audioUrl }
    return data && data.success ? data.audioUrl : null;
  } catch {
    // Network or other errors → just say "no saved audio"
    return null;
  }
}



// Donate Model Function

// Get elements
const donateButton = document.getElementById('donateButton');
const donateModal = document.getElementById('donateModal');
const closeBtn = document.querySelector('.close');
const amountButtons = document.querySelectorAll('.amount-btn');
const customAmountInput = document.getElementById('customAmount');
const donateForm = document.getElementById('donateForm');
const openUpiAppButton = document.getElementById('openUpiApp');

// Donation amount logic
let selectedAmount = 0;

// Handle predefined amount buttons
amountButtons.forEach(button => {
    button.addEventListener('click', () => {
        selectedAmount = parseInt(button.dataset.amount); // Get amount from button's data attribute
        customAmountInput.value = ''; // Clear custom amount input
        amountButtons.forEach(btn => btn.classList.remove('selected')); // Deselect other buttons
        button.classList.add('selected'); // Highlight selected button
    });
});

// Handle custom amount input
customAmountInput.addEventListener('input', () => {
    selectedAmount = parseInt(customAmountInput.value) || 0; // Set amount or default to 0
    amountButtons.forEach(btn => btn.classList.remove('selected')); // Deselect predefined buttons
});

// Open modal
donateButton.onclick = function () {
    donateModal.style.display = "block"; // Show the modal
}

// Close modal
closeBtn.onclick = function () {
    donateModal.style.display = "none"; // Hide the modal
}

// Close modal when clicking outside it
window.onclick = function (event) {
    if (event.target === donateModal) {
        donateModal.style.display = "none";
    }
}

// Submit form
donateForm.addEventListener('submit', async (e) => {
    e.preventDefault();

    // Get user details
    const name = document.getElementById('name').value.trim();
    const email = document.getElementById('email').value.trim();

    // Validate inputs
    if (!name || !email) {
        alert("Please enter your name and email.");
        return;
    }

    if (!selectedAmount || isNaN(selectedAmount) || selectedAmount <= 0) {
        alert("Please select or enter a valid donation amount.");
        return;
    }

    // Prepare donation data
    const donationData = { name, email, amount: selectedAmount };

    try {
        logger.log(donationData)
        console.log(donationData)
        // Save to MongoDB via API
        const response = await fetch('https://thevera-botveradb.hf.space/save-donation', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(donationData),
        });
        console.log(response)
        if (response.ok) {
            alert("Thank you for your donation!");
            donateModal.style.display = "none";
        } else {
            const errorData = await response.json();
            alert(`Error: ${errorData.error || "Something went wrong. Please try again."}`);
        }
    } catch (error) {
        alert("Unable to process your donation. Please try again later.");
        console.error(error);
    }
});

// Open UPI payment app
openUpiAppButton.onclick = function () {
    if (!selectedAmount || isNaN(selectedAmount) || selectedAmount <= 0) {
        alert("Please select or enter a valid donation amount.");
        return;
    }

    // UPI payment link with amount
    const upiLink = `upi://pay?pa=sumandas24-4@okaxis&pn=Suman+Das&am=${selectedAmount}&cu=INR`;
    window.open(upiLink, '_blank');
};


// Share App Function
function shareApp() {
    const shareData = {
        title: "BhagvatRas",
        text: "Explore BhagvatRas - Spiritual Insights and Discussions!",
        url: window.location.href
    };

    // ✅ Web Share API (For Mobile & Modern Browsers)
    if (navigator.share) {
        navigator.share(shareData)
            .then(() => console.log("Shared successfully"))
            .catch((error) => console.log("Error sharing:", error));
    } else {
        // ✅ Fallback: Manual share options
        let shareURL = encodeURIComponent(shareData.url);
        let shareText = encodeURIComponent(shareData.text);
        let logoURL = encodeURIComponent("https://bhagvat-ras.static.hf.space/icon_bhagvatras1.png");
      
        let shareOptions = `
            <p>Share this app:</p>
            <ul>
                <li><a href="mailto:?subject=${shareData.title}&body=${shareText}%20${shareURL}" target="_blank">📧 Email</a></li>
                <li><a href="https://api.whatsapp.com/send?text=${shareText}%20${shareURL}" target="_blank">📱 WhatsApp</a></li>
                <li><a href="https://www.facebook.com/sharer/sharer.php?u=${shareURL}" target="_blank">🔵 Facebook</a></li>
                <li><a href="https://twitter.com/intent/tweet?text=${shareText}&url=${shareURL}" target="_blank">🐦 Twitter</a></li>
                <li><a href="https://www.linkedin.com/sharing/share-offsite/?url=${shareURL}" target="_blank">💼 LinkedIn</a></li>
            </ul>
            <img src="${logoURL}" alt="BhagvatRas Logo" style="width: 50px; margin-top: 10px;">
        `;

        // Show fallback share options
        let shareDiv = document.createElement("div");
        shareDiv.innerHTML = shareOptions;
        shareDiv.style.position = "fixed";
        shareDiv.style.top = "50px";
        shareDiv.style.right = "20px";
        shareDiv.style.background = "white";
        shareDiv.style.padding = "10px";
        shareDiv.style.border = "1px solid #ddd";
        shareDiv.style.boxShadow = "0px 4px 6px rgba(0, 0, 0, 0.1)";
        document.body.appendChild(shareDiv);
    }
}

// Install Function
document.addEventListener("DOMContentLoaded", function () {
  let deferredPrompt;

  window.addEventListener('beforeinstallprompt', (e) => {
    e.preventDefault();
    deferredPrompt = e;

    console.log("✅ beforeinstallprompt fired");

    const installBtn = document.getElementById('installAppButton');
    if (installBtn) {
      installBtn.style.display = 'block';
      localStorage.setItem("installPromptShown", "true");
    }
  });

  const installBtn = document.getElementById('installAppButton');
  if (installBtn) {
    installBtn.addEventListener('click', () => {
      if (deferredPrompt) {
        deferredPrompt.prompt();
        deferredPrompt.userChoice.then((choiceResult) => {
          if (choiceResult.outcome === 'accepted') {
            console.log('✅ User accepted the A2HS prompt');
          } else {
            console.log('❌ User dismissed the A2HS prompt');
          }
          deferredPrompt = null;
          installBtn.style.display = 'none';
        });
      }
    });
  }
});

// ===== Voice Settings (popup) =====
// ===== Voice Settings (popup) — REPLACED & FIXED =====
const TTS_KEY = 'ttsSettings_v3';
// { byLang: { "hi-IN": {voiceURI, name}, ... }, rate, pitch, lastLang }
const TTS_DEFAULT = { byLang: {}, rate: 0.9, pitch: 0.9, lastLang: null };

const ttsGet = () => {
  try { return { ...TTS_DEFAULT, ...(JSON.parse(localStorage.getItem(TTS_KEY)) || {}) }; }
  catch { return { ...TTS_DEFAULT }; }
};
const ttsSave = (patch) => {
  const next = { ...ttsGet(), ...(patch || {}) };
  localStorage.setItem(TTS_KEY, JSON.stringify(next));
  return next;
};

// Warm-up for mobile (iOS/Android) to force voices to load after a user gesture
async function ensureVoicesReady() {
  let voices = speechSynthesis.getVoices();
  if (voices && voices.length) return voices;

  // speak a tiny silent utterance to trigger load on some browsers
  try {
    const u = new SpeechSynthesisUtterance(' ');
    u.volume = 0; u.rate = 1; u.pitch = 1;
    speechSynthesis.speak(u);
  } catch {}

  // wait for voiceschanged or timeout
  voices = await new Promise(resolve => {
    const handler = () => {
      const all = speechSynthesis.getVoices();
      if (all && all.length) {
        speechSynthesis.removeEventListener('voiceschanged', handler);
        resolve(all);
      }
    };
    speechSynthesis.addEventListener('voiceschanged', handler);
    setTimeout(() => {
      speechSynthesis.removeEventListener('voiceschanged', handler);
      resolve(speechSynthesis.getVoices() || []);
    }, 2000);
  });

  return voices;
}

function rankLang(a) {
  // Prefer IN locales, then Indic; otherwise alphabetical
  const priority = [
    'sa-IN','hi-IN','en-IN','bn-IN','mr-IN','gu-IN','ta-IN','te-IN','kn-IN','ml-IN','or-IN','pa-IN','as-IN'
  ];
  const ia = priority.indexOf(a);
  if (ia >= 0) return ia;
  if (/-IN$/i.test(a)) return 50; // other India locales
  return 100;
}

function uniqueLangs(voices) {
  const set = new Set();
  voices.forEach(v => v.lang && set.add(v.lang));
  return [...set].sort((a,b) => {
    const r = rankLang(a) - rankLang(b);
    return r !== 0 ? r : a.localeCompare(b);
  });
}

function voicesByLang(voices, lang) {
  return voices
    .filter(v => v.lang && v.lang.toLowerCase().startsWith(lang.toLowerCase()))
    .sort((a,b) => a.name.localeCompare(b.name));
}

function openVoiceModal(){ document.getElementById('voiceModal')?.classList.add('show'); }
function closeVoiceModal(){ document.getElementById('voiceModal')?.classList.remove('show'); }

async function buildVoiceUI() {
  if (!('speechSynthesis' in window)) return;

  const langSel = document.getElementById('voiceLang');
  const voiceSel = document.getElementById('voiceSelect');
  const rate = document.getElementById('voiceRate');
  const pitch = document.getElementById('voicePitch');
  if (!langSel || !voiceSel) return;

  // ensure voices are actually present (mobile)
  let voices = await ensureVoicesReady();
  if (!voices.length) {
    // one more retry on user action
    voices = await ensureVoicesReady();
  }

  // populate languages dynamically
  const st = ttsGet();
  const langs = uniqueLangs(voices);
  langSel.innerHTML = '';
  langs.forEach(l => {
    const opt = document.createElement('option');
    opt.value = l; opt.textContent = l;
    langSel.appendChild(opt);
  });
  langSel.value = st.lastLang && langs.includes(st.lastLang)
    ? st.lastLang
    : (langs.find(l => /-IN$/i.test(l)) || langs[0] || '');

  // populate voices for the chosen language
  function refreshVoiceList() {
    const lang = langSel.value;
    const list = voicesByLang(voices, lang);
    voiceSel.innerHTML = '';
    list.forEach(v => {
      const opt = document.createElement('option');
      opt.value = v.voiceURI;
      opt.textContent = `${v.name} — ${v.lang}`;
      voiceSel.appendChild(opt);
    });

    // restore saved choice if available
    const savedUri = st.byLang[lang]?.voiceURI;
    if (savedUri && [...voiceSel.options].some(o => o.value === savedUri)) {
      voiceSel.value = savedUri;
    } else if (list[0]) {
      voiceSel.value = list[0].voiceURI;
    }
  }

  rate.value = st.rate;
  pitch.value = st.pitch;
  langSel.onchange = () => { ttsSave({ lastLang: langSel.value }); refreshVoiceList(); };
  refreshVoiceList();

  // sample play
  document.getElementById('voiceSample')?.addEventListener('click', async () => {
    try {
      const lang = langSel.value;
      const uri = voiceSel.value;
      const v = speechSynthesis.getVoices().find(x => x.voiceURI === uri) || null;
      speechSynthesis.cancel();
      const u = new SpeechSynthesisUtterance(
        /en/i.test(lang) ? 'This is a sample voice.' : 'यह एक नमूना आवाज़ है | ॐ श्रीं नमः ।'
      );
      if (v) u.voice = v;
      u.lang = v?.lang || lang;
      u.rate = parseFloat(rate.value);
      u.pitch = parseFloat(pitch.value);
      speechSynthesis.speak(u);
    } catch (e) { console.warn(e); }
  });

  // save
  document.getElementById('voiceSave')?.addEventListener('click', () => {
    const lang = langSel.value;
    const uri = voiceSel.value;
    const v = speechSynthesis.getVoices().find(x => x.voiceURI === uri) || null;
    const byLang = { ...ttsGet().byLang, [lang]: { voiceURI: uri, name: v?.name || '' } };
    ttsSave({ byLang, rate: parseFloat(rate.value), pitch: parseFloat(pitch.value), lastLang: lang });
    closeVoiceModal();
  });

  // reset
  document.getElementById('voiceReset')?.addEventListener('click', () => {
    localStorage.removeItem(TTS_KEY);
    closeVoiceModal();
  });
}

// wire modal openers & close
function wireVoiceButtons() {
  const btn1 = document.getElementById('voiceSettingsBtn');
  const btn2 = document.getElementById('voiceSettingsBtnMobile');
  const close = document.getElementById('voiceModalClose');
  btn1?.addEventListener('click', () => { openVoiceModal(); buildVoiceUI(); });
  btn2?.addEventListener('click', () => { openVoiceModal(); buildVoiceUI(); });
  close?.addEventListener('click', closeVoiceModal);
  document.getElementById('voiceModal')?.addEventListener('click', e => {
    if (e.target && e.target.id === 'voiceModal') closeVoiceModal();
  });
}
document.addEventListener('DOMContentLoaded', wireVoiceButtons);

// Make speakClientSide respect saved per-language voice, rate & pitch
async function speakClientSide(text) {
  const st = ttsGet();
  let voices = speechSynthesis.getVoices();
  if (!voices || !voices.length) voices = await ensureVoicesReady();
  if (!voices.length) throw new Error('No TTS voices available');

  // preferred language: last used, else any -IN, else first
  const lang = st.lastLang || voices.find(v => /-IN$/i.test(v.lang))?.lang || voices[0].lang;
  let voice = null;
  const savedUri = st.byLang[lang]?.voiceURI;
  if (savedUri) voice = voices.find(v => v.voiceURI === savedUri) || null;
  if (!voice) voice = voicesByLang(voices, lang)[0] || voices[0];

  // speak with small pauses at | and ,
  speechSynthesis.cancel();
  const parts = text.split(/(\||,)/).map(s => s.trim()).filter(Boolean);
  for (const chunk of parts) {
    const u = new SpeechSynthesisUtterance(chunk);
    if (voice) u.voice = voice;
    u.lang = voice?.lang || lang;
    u.rate = st.rate;
    u.pitch = st.pitch;
    await new Promise((res, rej) => {
      u.onend = res; u.onerror = rej; speechSynthesis.speak(u);
    });
    if (chunk === '|' || chunk === ',') await new Promise(r => setTimeout(r, 220));
  }
}
// ===== end Voice Settings (popup) =====



// Code for Satsang

function checkLoginAndOpenSatsang() {
  const token = localStorage.getItem("authToken");
  if (!token) {
    alert("Please login to access the Daily Satsang.");
    window.location.href = "login.html";
  } else {
    window.location.href = "satsang.html";
  }
}