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<?php
session_start();
include "db.php";

// Check if user is logged in
if (!isset($_SESSION['user_id'])) {
    header("Location: login.php");
    exit();
}

$user_id = $_SESSION['user_id'];
$error_message = "";
$success_message = "";

// Get current user data
try {
    $stmt = $conn->prepare("SELECT username, profile_photo, bio FROM users WHERE id = ?");
    $stmt->execute([$user_id]);
    $user = $stmt->fetch();
} catch (PDOException $e) {
    $error_message = "Error fetching user data: " . $e->getMessage();
}

// Handle username update
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['update_username'])) {
    $new_username = trim($_POST['new_username']);
    
    if (empty($new_username)) {
        $error_message = "Username cannot be empty.";
    } else {
        // Check if username already exists
        $stmt = $conn->prepare("SELECT id FROM users WHERE username = ? AND id != ?");
        $stmt->execute([$new_username, $user_id]);
        
        if ($stmt->rowCount() > 0) {
            $error_message = "This username is already taken.";
        } else {
            try {
                $stmt = $conn->prepare("UPDATE users SET username = ? WHERE id = ?");
                $stmt->execute([$new_username, $user_id]);
                $success_message = "Username updated successfully!";
                $user['username'] = $new_username; // Update local data
            } catch (PDOException $e) {
                $error_message = "Error updating username: " . $e->getMessage();
            }
        }
    }
}

// Handle bio update
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['update_bio'])) {
    $new_bio = trim($_POST['bio']);
    
    try {
        $stmt = $conn->prepare("UPDATE users SET bio = ? WHERE id = ?");
        $stmt->execute([$new_bio, $user_id]);
        $success_message = "Bio updated successfully!";
        $user['bio'] = $new_bio; // Update local data
    } catch (PDOException $e) {
        $error_message = "Error updating bio: " . $e->getMessage();
    }
}

// Handle password change
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['change_password'])) {
    $current_password = $_POST['current_password'];
    $new_password = $_POST['new_password'];
    $confirm_password = $_POST['confirm_password'];
    
    if (empty($current_password) || empty($new_password) || empty($confirm_password)) {
        $error_message = "All password fields are required.";
    } elseif ($new_password !== $confirm_password) {
        $error_message = "New passwords do not match.";
    } else {
        // Verify current password
        $stmt = $conn->prepare("SELECT password FROM users WHERE id = ?");
        $stmt->execute([$user_id]);
        $user_data = $stmt->fetch();
        
        if (password_verify($current_password, $user_data['password'])) {
            // Update password
            $hashed_password = password_hash($new_password, PASSWORD_DEFAULT);
            try {
                $stmt = $conn->prepare("UPDATE users SET password = ? WHERE id = ?");
                $stmt->execute([$hashed_password, $user_id]);
                $success_message = "Password changed successfully!";
            } catch (PDOException $e) {
                $error_message = "Error changing password: " . $e->getMessage();
            }
        } else {
            $error_message = "Current password is incorrect.";
        }
    }
}

// Handle profile photo upload
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['upload_photo'])) {
    // Check for compressed image data first (client-side compression)
    if (!empty($_POST['compressed_image_data'])) {
        $imageData = $_POST['compressed_image_data'];
        
        // Extract the base64 image data
        if (preg_match('/^data:image\/(\w+);base64,/', $imageData, $type)) {
            $imageData = substr($imageData, strpos($imageData, ',') + 1);
            $imageType = strtolower($type[1]); // jpeg, png, gif
            
            // Check if it's a valid image type
            if (!in_array($imageType, ['jpeg', 'jpg', 'png', 'gif'])) {
                $error_message = "Invalid image type. Only JPG, PNG and GIF images are allowed.";
            } else {
                // Decode base64 data
                $imageData = base64_decode($imageData);
                
                if ($imageData === false) {
                    $error_message = "Failed to decode image data.";
                } else {
                    // Create uploads directory if it doesn't exist
                    $upload_dir = 'uploads/profile_photos/';
                    if (!file_exists($upload_dir)) {
                        if (!mkdir($upload_dir, 0755, true)) {
                            $error_message = "Failed to create upload directory.";
                        }
                    }
                    
                    // Generate unique filename
                    $filename = $user_id . '_' . time() . '.' . $imageType;
                    $target_path = $upload_dir . $filename;
                    
                    // Save the image file
                    if (file_put_contents($target_path, $imageData)) {
                        // Delete old photo if exists
                        if (!empty($user['profile_photo']) && file_exists($user['profile_photo'])) {
                            unlink($user['profile_photo']);
                        }
                        
                        // Update database
                        try {
                            $stmt = $conn->prepare("UPDATE users SET profile_photo = ? WHERE id = ?");
                            $stmt->execute([$target_path, $user_id]);
                            $success_message = "Profile photo updated successfully!";
                            $user['profile_photo'] = $target_path;
                        } catch (PDOException $e) {
                            $error_message = "Database error: " . $e->getMessage();
                        }
                    } else {
                        $error_message = "Failed to save image.";
                    }
                }
            }
        } else {
            $error_message = "Invalid image data format.";
        }
    }
    // Fall back to regular file upload if no compressed data
    else if (isset($_FILES['profile_photo']) && $_FILES['profile_photo']['error'] == 0) {
        $allowed_types = ['image/jpeg', 'image/png', 'image/gif'];
        $max_size = 5 * 1024 * 1024; // 5MB
        
        $file = $_FILES['profile_photo'];
        
        if (!in_array($file['type'], $allowed_types)) {
            $error_message = "Invalid file type. Only JPG, PNG and GIF images are allowed.";
        } elseif ($file['size'] > $max_size) {
            $error_message = "File is too large. Maximum size is 5MB.";
        } else {
            // Create uploads directory if it doesn't exist
            $upload_dir = 'uploads/profile_photos/';
            if (!file_exists($upload_dir)) {
                if (!mkdir($upload_dir, 0755, true)) {
                    $error_message = "Failed to create upload directory.";
                }
            }
            
            // Make sure the directory is writable
            if (!is_writable($upload_dir)) {
                $error_message = "Upload directory is not writable. Please check permissions.";
            } else {
                // Generate unique filename
                $filename = $user_id . '_' . time() . '_' . basename($file['name']);
                $target_path = $upload_dir . $filename;
                
                if (move_uploaded_file($file['tmp_name'], $target_path)) {
                    // Delete old photo if exists
                    if (!empty($user['profile_photo']) && file_exists($user['profile_photo'])) {
                        unlink($user['profile_photo']);
                    }
                    
                    // Update database with new photo path
                    try {
                        $stmt = $conn->prepare("UPDATE users SET profile_photo = ? WHERE id = ?");
                        $stmt->execute([$target_path, $user_id]);
                        $success_message = "Profile photo updated successfully!";
                        $user['profile_photo'] = $target_path; // Update local data
                    } catch (PDOException $e) {
                        $error_message = "Error updating profile photo in database: " . $e->getMessage();
                    }
                } else {
                    $error_message = "Failed to move uploaded file to the target location.";
                }
            }
        }
    } else {
        if (!isset($_FILES['profile_photo'])) {
            $error_message = "Error: No file was uploaded. The profile_photo field is missing.";
        } elseif ($_FILES['profile_photo']['error'] != 0) {
            // Show detailed error based on the error code
            switch($_FILES['profile_photo']['error']) {
                case UPLOAD_ERR_INI_SIZE:
                    $error_message = "The uploaded file exceeds the upload_max_filesize directive in php.ini.";
                    break;
                case UPLOAD_ERR_FORM_SIZE:
                    $error_message = "The uploaded file exceeds the MAX_FILE_SIZE directive in the HTML form.";
                    break;
                case UPLOAD_ERR_PARTIAL:
                    $error_message = "The uploaded file was only partially uploaded.";
                    break;
                case UPLOAD_ERR_NO_FILE:
                    $error_message = "No file was uploaded. Please select an image.";
                    break;
                case UPLOAD_ERR_NO_TMP_DIR:
                    $error_message = "Missing a temporary folder.";
                    break;
                case UPLOAD_ERR_CANT_WRITE:
                    $error_message = "Failed to write file to disk.";
                    break;
                case UPLOAD_ERR_EXTENSION:
                    $error_message = "A PHP extension stopped the file upload.";
                    break;
                default:
                    $error_message = "Unknown upload error: " . $_FILES['profile_photo']['error'];
            }
        }
    }
}

// Handle profile photo removal
if ($_SERVER["REQUEST_METHOD"] == "POST" && isset($_POST['remove_photo'])) {
    if (!empty($user['profile_photo'])) {
        // Delete the file if it exists
        if (file_exists($user['profile_photo'])) {
            unlink($user['profile_photo']);
        }
        
        // Update database to remove photo path
        try {
            $stmt = $conn->prepare("UPDATE users SET profile_photo = NULL WHERE id = ?");
            $stmt->execute([$user_id]);
            $success_message = "Profile photo removed.";
            $user['profile_photo'] = null; // Update local data
        } catch (PDOException $e) {
            $error_message = "Error removing profile photo: " . $e->getMessage();
        }
    }
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My Profile - ELearner</title>
    <link href="https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css" rel="stylesheet">
    <link rel="stylesheet" href="styles.css">
    <link rel="stylesheet" href="font-styles.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css">
    <style>
        .profile-photo {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 50%;
        }
        
        .profile-photo-container {
            position: relative;
            width: 150px;
            margin: 0 auto;
        }
        
        .photo-overlay {
            position: absolute;
            bottom: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.6);
            color: white;
            border-radius: 50%;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }
        
        .preview-container {
            width: 150px;
            height: 150px;
            margin: 10px auto;
            overflow: hidden;
            border-radius: 50%;
            border: 2px dashed #ccc;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .preview-image {
            max-width: 100%;
            max-height: 100%;
            object-fit: cover;
            width: 100%;
            height: 100%;
        }
        
        .file-info {
            font-size: 0.8rem;
            color: #666;
            margin-top: 0.5rem;
        }
        
        .progress-bar {
            height: 5px;
            background-color: #e2e8f0;
            border-radius: 2px;
            overflow: hidden;
            margin-top: 5px;
        }
        
        .progress-bar-inner {
            height: 100%;
            background-color: #3b82f6;
            width: 0%;
            transition: width 0.3s;
        }
    </style>
</head>
<body class="bg-gray-100 min-h-screen flex flex-col">
    <div class="main-content flex-1">
    <div class="container mx-auto px-4 py-4 sm:py-8">
        <header class="bg-white rounded-lg shadow-md p-4 sm:p-6 mb-6 sm:mb-8">
            <div class="flex flex-wrap items-center justify-between">
                <div class="flex items-center">
                    <a href="homepage.php">
                        <img src="images/icon-e-learner-blue.png" alt="ELearner Logo" class="h-10 sm:h-12 mr-3 sm:mr-4">
                    </a>
                    <div>
                        <h1 class="text-2xl sm:text-3xl font-bold text-blue-600">ELearner</h1>
                        <p class="text-sm sm:text-base text-gray-600">My Profile</p>
                    </div>
                </div>
                <nav id="desktopMenu" class="hidden md:block">
                    <ul class="flex space-x-4 sm:space-x-6">
                        <li><a href="homepage.php" class="text-blue-500 font-medium hover:underline">Home</a></li>
                        <li><a href="index.php" class="text-blue-500 font-medium hover:underline">Vocabulary Tool</a></li>
                        <li><a href="my_lists.php" class="text-blue-500 font-medium hover:underline">My Lists</a></li>
                        <li><a href="list_hub.php" class="text-blue-500 font-medium hover:underline">List Hub</a></li>
                        <li><a href="profile.php" class="text-blue-500 font-medium hover:underline">My Profile</a></li>
                        <?php if(isset($_SESSION['is_admin']) && $_SESSION['is_admin'] == 1): ?>
                            <li><a href="admin.php" class="text-purple-500 font-medium hover:underline">Admin</a></li>
                        <?php endif; ?>
                        <li><a href="logout.php" class="text-red-500 font-medium hover:underline">Logout</a></li>
                        <li>
                            <button id="fontToggleBtn" class="bg-purple-500 text-white px-3 py-1 rounded hover:bg-purple-600">
                                Toggle Font
                            </button>
                        </li>
                    </ul>
                </nav>
                <!-- Mobile menu button -->
                <button id="mobileMenuBtn" class="md:hidden p-2 rounded text-blue-600 hover:bg-blue-100">
                    <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16"></path>
                    </svg>
                </button>
            </div>
            
            <!-- Mobile menu, hidden by default -->
            <nav id="mobileMenu" class="md:hidden hidden mt-4 pb-2">
                <ul class="flex flex-col space-y-3">
                    <li><a href="homepage.php" class="block text-blue-500 font-medium hover:underline">Home</a></li>
                    <li><a href="index.php" class="block text-blue-500 font-medium hover:underline">Vocabulary Tool</a></li>
                    <li><a href="my_lists.php" class="block text-blue-500 font-medium hover:underline">My Lists</a></li>
                    <li><a href="list_hub.php" class="block text-blue-500 font-medium hover:underline">List Hub</a></li>
                    <li><a href="profile.php" class="block text-blue-500 font-medium hover:underline">My Profile</a></li>
                    <?php if(isset($_SESSION['is_admin']) && $_SESSION['is_admin'] == 1): ?>
                        <li><a href="admin.php" class="block text-purple-500 font-medium hover:underline">Admin</a></li>
                    <?php endif; ?>
                    <li><a href="logout.php" class="block text-red-500 font-medium hover:underline">Logout</a></li>
                    <li>
                        <button id="mobileFontToggleBtn" class="bg-purple-500 text-white px-3 py-1 rounded hover:bg-purple-600">
                            Toggle Font
                        </button>
                    </li>
                </ul>
            </nav>
        </header>
        
        <div class="flex flex-col md:flex-row gap-6">
            <!-- Profile Summary Card -->
            <div class="w-full md:w-1/3">
                <div class="bg-white rounded-lg shadow-md p-6 text-center">
                    <h2 class="text-xl font-bold mb-4">My Profile</h2>
                    
                    <div class="profile-photo-container mb-4">
                        <?php if (!empty($user['profile_photo']) && file_exists($user['profile_photo'])): ?>
                            <img src="<?= htmlspecialchars($user['profile_photo']) ?>" alt="Profile Photo" class="profile-photo">
                        <?php else: ?>
                            <div class="profile-photo bg-gray-200 flex items-center justify-center">
                                <i class="fas fa-user text-gray-400 text-5xl"></i>
                            </div>
                        <?php endif; ?>
                        
                        <label for="photoUploadInput" class="photo-overlay" title="Change photo">
                            <i class="fas fa-camera"></i>
                        </label>
                    </div>
                    
                    <h3 class="text-lg font-medium"><?= htmlspecialchars($user['username']) ?></h3>
                    
                    <div class="mt-4">
                        <form action="profile.php" method="post" enctype="multipart/form-data" class="border-t pt-4 mt-2">
                            <h4 class="font-medium text-gray-700 mb-2">Change Profile Picture</h4>
                            <div class="flex flex-col items-center">
                                <div class="relative w-full max-w-sm mb-3">
                                    <input type="file" id="photoUploadInput" name="profile_photo" 
                                        accept="image/jpeg, image/png, image/gif" class="absolute inset-0 w-full h-full opacity-0 cursor-pointer z-10">
                                    <div class="flex items-center">
                                        <label for="photoUploadInput" class="flex-grow px-4 py-2 bg-gray-200 text-gray-700 rounded-l border border-gray-300 hover:bg-gray-300 transition duration-200 text-center overflow-hidden whitespace-nowrap overflow-ellipsis">
                                            <span id="fileNameDisplay">Choose a file...</span>
                                        </label>
                                        <span class="bg-blue-500 text-white px-4 py-2 rounded-r flex items-center">
                                            <i class="fas fa-upload mr-2"></i> Browse
                                        </span>
                                    </div>
                                    <p class="text-xs text-gray-500 mt-1">Supported formats: JPEG, PNG, GIF (max 5MB)</p>
                                </div>
                                <input type="hidden" name="upload_photo" value="1">
                                <button type="submit" class="bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600 transition-colors duration-200 flex items-center">
                                    <i class="fas fa-cloud-upload-alt mr-2"></i> Upload Photo
                                </button>
                            </div>
                        </form>
                    </div>
                    
                    <?php if (!empty($user['profile_photo'])): ?>
                        <form method="post" class="mt-2">
                            <button type="submit" name="remove_photo" class="text-red-500 text-sm hover:underline">
                                Remove Photo
                            </button>
                        </form>
                    <?php endif; ?>
                </div>
            </div>
            
            <!-- Profile Edit Forms -->
            <div class="w-full md:w-2/3">
                <div class="bg-white rounded-lg shadow-md p-6">
                    <?php if ($error_message): ?>
                        <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded mb-4" role="alert">
                            <p><?php echo $error_message; ?></p>
                        </div>
                    <?php endif; ?>
                    
                    <?php if ($success_message): ?>
                        <div class="bg-green-100 border border-green-400 text-green-700 px-4 py-3 rounded mb-4" role="alert">
                            <p><?php echo $success_message; ?></p>
                        </div>
                    <?php endif; ?>
                    
                    <h2 class="text-xl font-bold mb-6">Edit Profile</h2>
                    
                    <!-- Update Username Form -->
                    <div class="mb-8 pb-6 border-b border-gray-200">
                        <h3 class="text-lg font-semibold mb-4">Update Username</h3>
                        <form method="post" class="space-y-4">
                            <div class="flex flex-col sm:flex-row gap-4">
                                <div class="flex-grow">
                                    <input type="text" name="new_username" value="<?= htmlspecialchars($user['username']) ?>" 
                                           class="w-full p-2 border rounded" required>
                                </div>
                                <div>
                                    <button type="submit" name="update_username" class="w-full sm:w-auto bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600">
                                        Update Username
                                    </button>
                                </div>
                            </div>
                        </form>
                    </div>
                    
                    <!-- Update Bio Form -->
                    <div class="mb-8 pb-6 border-b border-gray-200">
                        <h3 class="text-lg font-semibold mb-4">Update Bio</h3>
                        <form method="post" class="space-y-4">
                            <div>
                                <label for="bio" class="block text-gray-700 mb-1">Bio (optional)</label>
                                <textarea id="bio" name="bio" rows="4" class="w-full p-2 border rounded"
                                          placeholder="Tell others about yourself..."><?= htmlspecialchars($user['bio'] ?? '') ?></textarea>
                                <p class="text-xs text-gray-500 mt-1">Your bio will be visible on your public profile.</p>
                            </div>
                            <div>
                                <button type="submit" name="update_bio" class="bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600">
                                    Update Bio
                                </button>
                            </div>
                        </form>
                    </div>
                    
                    <!-- Change Password Form -->
                    <div>
                        <h3 class="text-lg font-semibold mb-4">Change Password</h3>
                        <form method="post" class="space-y-4">
                            <div>
                                <label for="current_password" class="block text-gray-700 mb-1">Current Password</label>
                                <input type="password" id="current_password" name="current_password" 
                                       class="w-full p-2 border rounded" required>
                            </div>
                            
                            <div>
                                <label for="new_password" class="block text-gray-700 mb-1">New Password</label>
                                <input type="password" id="new_password" name="new_password" 
                                       class="w-full p-2 border rounded" required>
                            </div>
                            
                            <div>
                                <label for="confirm_password" class="block text-gray-700 mb-1">Confirm New Password</label>
                                <input type="password" id="confirm_password" name="confirm_password" 
                                       class="w-full p-2 border rounded" required>
                            </div>
                            
                            <div>
                                <button type="submit" name="change_password" class="bg-green-500 text-white px-4 py-2 rounded hover:bg-green-600">
                                    Change Password
                                </button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
    </div>
    
    <?php include "footer.php"; ?>
    
    <script>
        // Mobile menu toggle
        document.getElementById("mobileMenuBtn").addEventListener("click", function() {
            const mobileMenu = document.getElementById("mobileMenu");
            mobileMenu.classList.toggle("hidden");
        });
        
        // Copy font toggle functionality to mobile button
        if (document.getElementById("mobileFontToggleBtn")) {
            document.getElementById("mobileFontToggleBtn").addEventListener("click", function() {
                document.getElementById("fontToggleBtn").click();
            });
        }
        
        // Image compression and preview code
        document.addEventListener('DOMContentLoaded', function() {
            const photoInput = document.getElementById('photoUploadInput');
            const previewContainer = document.getElementById('previewContainer');
            const previewImage = document.getElementById('previewImage');
            const fileInfo = document.getElementById('fileInfo');
            const progressContainer = document.getElementById('progressContainer');
            const progressBar = document.getElementById('progressBar');
            const uploadButton = document.getElementById('uploadButton');
            const compressedImageInput = document.getElementById('compressedImageData');
            const photoForm = document.getElementById('photoUploadForm');
            
            // Maximum file size (in bytes) - 2MB
            const MAX_FILE_SIZE = 2 * 1024 * 1024;
            
            // Handle file selection
            photoInput.addEventListener('change', function(e) {
                const file = e.target.files[0];
                
                if (!file) {
                    return;
                }
                
                // Show preview container and file info
                previewContainer.classList.remove('hidden');
                fileInfo.classList.remove('hidden');
                
                const reader = new FileReader();
                // Create file reader to display preview
                reader.onload = function(e) {
                    previewImage.src = e.target.result;
                    // Show the original image preview
                    fileInfo.textContent = `Original: ${formatFileSize(file.size)}`;
                    
                    if (file.size > MAX_FILE_SIZE) {
                        compressImage(e.target.result);
                    } else {
                        compressedImageInput.value = e.target.result;
                        // If file is small enough, just use it directly
                    }
                };
                reader.readAsDataURL(file);
            });
            
            // Handle form submission
            photoForm.addEventListener('submit', function(e) {
                if (compressedImageInput.value === '') {
                    const file = photoInput.files[0];
                    if (file && file.size > MAX_FILE_SIZE) {
                        alert("Please wait for image compression to complete.");
                        e.preventDefault();
                    }
                }
            });
            
            // Image compression function
            function compressImage(dataUrl) {
                const img = new Image();
                // Create an image element to load the data URL
                img.onload = function() {
                    let width = img.width;
                    let height = img.height;
                    // Calculate new dimensions while maintaining aspect ratio
                    const maxDimension = 1200; // Maximum dimension for resized image
                    if (width > height && width > maxDimension) {
                        width = maxDimension;
                        height = (height / width) * maxDimension;
                    } else if (height > maxDimension) {
                        height = maxDimension;
                        width = (width / height) * maxDimension;
                    }
                    
                    const canvas = document.createElement('canvas');
                    // Create canvas for resizing
                    canvas.width = width;
                    canvas.height = height;
                    const ctx = canvas.getContext('2d');
                    ctx.drawImage(img, 0, 0, width, height);
                    // Draw image on canvas (resizing it)
                    
                    const compressedDataUrl = canvas.toDataURL('image/jpeg', 0.7);
                    // Get compressed data URL (0.7 quality for JPEG)
                    previewImage.src = compressedDataUrl;
                    // Update preview and info
                    compressedImageInput.value = compressedDataUrl;
                    // Set the compressed image data in the form
                    const estimatedSize = Math.round(compressedDataUrl.length * 0.75);
                    // Estimate compressed file size (roughly)
                    fileInfo.textContent = `Original: ${formatFileSize(img.src.length)} → Compressed: ${formatFileSize(estimatedSize)}`;
                    
                    progressBar.style.width = '100%';
                    // Hide progress after a short delay
                    setTimeout(() => {
                        progressContainer.classList.add('hidden');
                        progressBar.style.width = '0%';
                    }, 500);
                };
                img.src = dataUrl;
                progressContainer.classList.remove('hidden');
                // Show progress indicator
                progressBar.style.width = '10%';
            }
            
            // Helper function to format file size
            function formatFileSize(bytes) {
                if (bytes < 1024) return bytes + ' bytes';
                else if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB';
                else return (bytes / (1024 * 1024)).toFixed(1) + ' MB';
            }
        });
        
        // Update file name display when a file is selected
        document.getElementById('photoUploadInput').addEventListener('change', function(e) {
            const fileName = e.target.files[0] ? e.target.files[0].name : 'Choose a file...';
            document.getElementById('fileNameDisplay').textContent = fileName;
        });
    </script>
    <script src="font-toggle.js"></script>
</body>
</html>

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