script.js

document.addEventListener("DOMContentLoaded", function () {
    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.querySelector(".menu-button");
    // const sidebar = document.querySelector(".sidebar");
    const overlay = document.querySelector(".overlay");
    const content = document.querySelector("#content"); // Main content area
    // const nextChapterButton = document.getElementById("nextChapterButton");

    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';
        } 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';
      });
    }
  
    console.log("DOM loaded: Checking for nextChapterButton");
    // Ensure the button exists before attaching the event listener
    if (nextChapterButton) {
        nextChapterButton.addEventListener("click", function () {
            console.log("Next Chapter button clicked");
            loadNextChapter();
        });
    } else {
        console.error("nextChapterButton not found in the DOM.");
    }

    // 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
        }
    });
});

// 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
});
// Handle auto-click when any content inside the list is clicked
// document.getElementById('shastraList').addEventListener('click', function () {
//     document.getElementById('shastraHeader').click(); // Simulate a click on the header
// });

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


function initializePage(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.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.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...");

    const chapterTitle = document.getElementById('chapterTitle');
    const slokeContent = document.getElementById('slokeContent');
    const videoPlayer = document.getElementById('videoPlayer');
    const transcriptBlock = document.getElementById('transcript');

    // 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.about || chapterDetails.chapterTitle || '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>');

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

        // Update video and transcript blocks
        videoPlayer.src = 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 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, '');
}

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

// async function playTTS(text) {
//     console.log('Playing TTS for:', text);
//     text = cleanSlokText(text);

//     if (!text || text.trim() === '') {
//         console.error('No text provided');
//         return;
//     }

//     try {
//         const audioUrl = await getAudioUrlForSloke(text);

//         if (audioUrl) {
//             console.log('Fetched audio URL:', audioUrl);

//             const audioPlayer = document.getElementById('audioPlayer');
//             audioPlayer.src = audioUrl;

//             // Clear any previous errors
//             audioPlayer.onerror = null;

//             audioPlayer.load();
//             await audioPlayer.play();

//             audioPlayer.onended = () => {
//                 console.log('Playback completed');
//             };

//         } else {
//             console.warn('No audio URL found for the sloke');
//         }
//     } catch (error) {
//         console.error('Error during playback:', error);
//     }
// }


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

    // Try fetching the saved audio URL from Google Drive or another source
    const audioUrl = await getAudioUrlForSloke(text);  // Function to fetch the URL of saved audio
    
    if (audioUrl) {
        console.log('Fetched audio URL:', audioUrl);
        // If we get a valid audio URL, play it
        return new Promise((resolve, reject) => {
            const audioPlayer = document.getElementById('audioPlayer');
            audioPlayer.src = audioUrl;
            audioPlayer.onerror = null;
            audioPlayer.load();
            audioPlayer.play();

            // Resolve the promise when playback ends
            audioPlayer.onended = () => {
                isPlaying = false;
                URL.revokeObjectURL(audioUrl); // Clean up URL
                resolve();
            };

            // Reject the promise if there's an error
            audioPlayer.onerror = (event) => {
                console.error('Playback error:', event);
                reject(event);
            };

            isPlaying = true;
        });
    } else {
        // If no saved audio is available or there’s an error, fallback to server-based TTS
        console.warn('Saved audio not found, using server-side TTS.');

        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 audioUrl = URL.createObjectURL(audioBlob);

            return new Promise((resolve, reject) => {
                const audioPlayer = document.getElementById('audioPlayer');
                audioPlayer.src = audioUrl;
                audioPlayer.play();

                audioPlayer.onended = () => {
                    isPlaying = false;
                    URL.revokeObjectURL(audioUrl); // Clean up URL
                    resolve();
                };

                audioPlayer.onerror = (event) => {
                    console.error('Server-based TTS playback error:', event);
                    reject(event);
                };

                isPlaying = true;
            });
        } catch (error) {
            console.error('Error calling server:', error);
            throw error;
        }
    }
}

// Function to fetch the audio URL for a given sloke
async function getAudioUrlForSloke(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 playTTS(text) {
//     console.log('Speaking mantra');
//     text = cleanSlokText(text);
  
//     if (!text || text.trim() === '') {
//         console.error('No text provided');
//         return;
//     }

//     const synth = window.speechSynthesis;
//     let voices = synth.getVoices();

//     if (voices.length === 0) {
//         voices = await new Promise(resolve => {
//             const id = setInterval(() => {
//                 voices = synth.getVoices();
//                 if (voices.length > 0) {
//                     clearInterval(id);
//                     resolve(voices);
//                 }
//             }, 10);
//         });
//     }

//     const sanskritVoice = voices.find(voice => voice.lang === 'sa-IN');
//     if (sanskritVoice) {
//       synth.cancel(); // Stop any ongoing speech synthesis
  
//       return new Promise((resolve, reject) => {
//           try {
//               speakSloke(text); // Use the speakSloke function for speech synthesis
//               isPlaying = true; // Set playback status
//               resolve(); // Immediately resolve since speakSloke doesn't support events
//           } catch (error) {
//               console.error('TTS playback error:', error);
//               reject(error); // Reject the promise if an error occurs
//           }
//       });
//     } else {
//         // Fallback to server-based TTS audio
//         console.warn('sa-IN voice not available, using server.');

//         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({ text })
//             });

//             if (!response.ok) {
//                 throw new Error('Failed to fetch audio from server');
//             }

//             const audioBlob = await response.blob();
//             const audioUrl = URL.createObjectURL(audioBlob);

//             return new Promise((resolve, reject) => {
//                 // Use the default audio player for playback
//                 const audioPlayer = document.getElementById('audioPlayer');
//                 audioPlayer.src = audioUrl;
//                 audioPlayer.play();

//                 // Resolve the promise when playback ends
//                 audioPlayer.onended = () => {
//                     isPlaying = false;
//                     URL.revokeObjectURL(audioUrl); // Clean up URL
//                     resolve();
//                 };

//                 // Reject the promise if there's an error
//                 audioPlayer.onerror = (event) => {
//                     console.error('Server-based TTS playback error:', event);
//                     reject(event);
//                 };

//                 isPlaying = true;
//             });
//         } catch (error) {
//             console.error('Error calling server:', error);
//             throw error;
//         }
//     }
// }


// The speakSloke function can now be integrated with playTTS if desired
function speakSloke(text) {
    // Normalize and preprocess the text
    const normalizedText = text
        .normalize("NFC")
        .replace(/ऽ/g, " "); // Replace avagraha with a space for better pronunciation

    // Split the text into meaningful phrases
    const phrases = normalizedText.split(/[।॥]/).filter(phrase => phrase.trim().length > 0);

    let phraseIndex = 0;

    function speakNextPhrase() {
        if (phraseIndex >= phrases.length) return;

        const currentPhrase = phrases[phraseIndex].trim();
        const utterance = new SpeechSynthesisUtterance(currentPhrase);

        // Set voice and TTS parameters for a bold, heavy tone
        utterance.lang = "sa-IN";
        utterance.pitch = 0.8; // Lower pitch for a deeper, heavier voice
        utterance.rate = 0.8; // Slower rate for gravitas and clarity
        utterance.volume = 1.0; // Full volume for boldness

        // Select the male Sanskrit voice
        const voices = speechSynthesis.getVoices();
        const sanskritVoice = voices.find(voice => voice.lang === "sa-IN" && voice.name.includes("Male"));

        if (sanskritVoice) {
            utterance.voice = sanskritVoice;
        } else {
            throw new Error('sa-IN voice is unavailable');
        }

        // Handle completion of the current phrase
        utterance.onend = () => {
            phraseIndex++;
            setTimeout(speakNextPhrase, 500); // Slightly longer pause for dramatic effect
        };

        // Handle errors gracefully
        utterance.onerror = (error) => {
            console.error(`Error speaking phrase: ${currentPhrase}`, error);
            phraseIndex++;
            setTimeout(speakNextPhrase, 500);
        };

        console.log(`Speaking phrase with bold voice: ${currentPhrase}`); // Debugging
        speechSynthesis.speak(utterance);
    }

    speakNextPhrase(); // Start speaking the sloke
}

// 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');
};


// When the user clicks on the Donate button, open the modal
// donateButton.onclick = function() {
//     donateModal.style.display = "block";
// }

// When the user clicks on <span> (x), close the modal
// closeBtn.onclick = function() {
//     donateModal.style.display = "none";
// }

// When the user clicks outside the modal, close it
// window.onclick = function(event) {
//     if (event.target == donateModal) {
//         donateModal.style.display = "none";
//     }
// }

// Open UPI app (works for mobile only)
// openUpiAppButton.onclick = function() {
//     const upiLink = "upi://pay?pa=sumandas24-4@okaxis&pn=Suman+Das&url=https://bhagvat-ras.static.hf.space/index.html";  // Replace with actual UPI link
//     window.open(upiLink, '_blank');
// };