<?php
/*******************************************************************************************************************
| Software Name        : EasyStream
| Software Description : High End YouTube Clone Script with Videos, Shorts, Streams, Images, Audio, Documents, Blogs
| Software Author      : (c) Sami Ahmed
|*******************************************************************************************************************
|
|*******************************************************************************************************************
| This source file is subject to the EasyStream Proprietary License Agreement.
|
| By using this software, you acknowledge having read this Agreement and agree to be bound thereby.
|*******************************************************************************************************************
| Copyright (c) 2025 Sami Ahmed. All rights reserved.
|*******************************************************************************************************************/

/**
 * Subtitle Management Page
 *
 * Allows users to:
 * - Upload subtitle files (.srt, .vtt) for their videos
 * - Manage multiple language tracks
 * - Set default subtitle language
 * - Delete subtitle tracks
 * - Preview subtitles
 *
 * URL: /f_modules/m_frontend/m_file/manage_subtitles.php?v={file_key}&type={file_type}
 */

define('_ISVALID', true);

$main_dir = realpath(dirname(__FILE__) . '/../../../');
set_include_path($main_dir);

include_once 'f_core/config.core.php';

// Check if user is logged in
if (!isset($_SESSION['USER_ID']) || $_SESSION['USER_ID'] == 0) {
    header('Location: ' . $cfg['main_url'] . '/login.php');
    exit;
}

$error_message = null;
$notice_message = null;

// Get file info from URL
$file_key = isset($_GET['v']) ? VSecurity::getParam('v', 'string') : '';
$file_type = isset($_GET['type']) ? VSecurity::getParam('type', 'string') : 'video';

// Validate file type
$allowed_types = ['video', 'short', 'live', 'audio'];
if (!in_array($file_type, $allowed_types)) {
    $file_type = 'video';
}

// Get file ID from key
$table_map = [
    'video' => 'db_videofiles',
    'short' => 'db_shortfiles',
    'live' => 'db_livefiles',
    'audio' => 'db_audiofiles'
];

$sql = "SELECT `db_id`, `usr_id`, `file_title` FROM `{$table_map[$file_type]}`
        WHERE `file_key` = '%s' AND `usr_id` = %d LIMIT 1";
$result = $class_database->doQuery($sql, $file_key, (int) $_SESSION['USER_ID']);
$file_info = $result->fetch_assoc();

if (!$file_info) {
    $error_message = 'File not found or you do not have permission to manage its subtitles.';
} else {
    $file_id = $file_info['db_id'];

    // Handle subtitle upload
    if (isset($_POST['upload_subtitle']) && isset($_FILES['subtitle_file'])) {
        $language = VSecurity::postParam('language', 'string');
        $label = VSecurity::postParam('label', 'string');
        $is_default = isset($_POST['is_default']) ? true : false;

        $result = VSubtitles::uploadSubtitle(
            $file_id,
            $file_type,
            $_FILES['subtitle_file'],
            $language,
            $label,
            $is_default
        );

        if ($result['success']) {
            $notice_message = $result['message'];
        } else {
            $error_message = $result['message'];
        }
    }

    // Handle subtitle deletion
    if (isset($_POST['delete_subtitle'])) {
        $sub_id = VSecurity::postParam('sub_id', 'int');
        if (VSubtitles::deleteSubtitle($sub_id)) {
            $notice_message = 'Subtitle deleted successfully';
        } else {
            $error_message = 'Failed to delete subtitle';
        }
    }

    // Handle set default
    if (isset($_POST['set_default'])) {
        $sub_id = VSecurity::postParam('sub_id', 'int');
        // Implement set default logic
        $sql = "UPDATE `db_subtitles` SET `sub_default` = 0
                WHERE `file_id` = %d AND `file_type` = '%s'";
        $class_database->doQuery($sql, $file_id, $file_type);

        $sql = "UPDATE `db_subtitles` SET `sub_default` = 1 WHERE `sub_id` = %d";
        $class_database->doQuery($sql, $sub_id);

        $notice_message = 'Default subtitle updated';
    }

    // Get existing subtitles
    $subtitles = VSubtitles::getSubtitles($file_id, $file_type, false);
}

// Get configuration
$cfg = $class_database->getConfigurations('subtitles_enabled,subtitles_max_size,subtitles_allowed_formats,subtitles_max_per_video');

?>
<!DOCTYPE html>
<html>
<head>
    <title>Manage Subtitles - <?php echo htmlspecialchars($file_info['file_title'] ?? 'EasyStream'); ?></title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
            max-width: 900px;
            margin: 40px auto;
            padding: 20px;
            background: #f9f9f9;
        }
        .container {
            background: white;
            border-radius: 8px;
            padding: 30px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
            margin-bottom: 10px;
        }
        .file-title {
            color: #666;
            margin-bottom: 30px;
            font-size: 14px;
        }
        .message {
            padding: 12px 16px;
            border-radius: 4px;
            margin-bottom: 20px;
        }
        .error {
            background: #fee;
            color: #c33;
            border-left: 4px solid #c33;
        }
        .notice {
            background: #efe;
            color: #3c3;
            border-left: 4px solid #3c3;
        }
        .upload-form {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 6px;
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
            color: #333;
        }
        input[type="text"],
        input[type="file"],
        select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 14px;
        }
        .checkbox-group {
            display: flex;
            align-items: center;
        }
        .checkbox-group input {
            width: auto;
            margin-right: 8px;
        }
        button {
            background: #1a73e8;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
        }
        button:hover {
            background: #1557b0;
        }
        .subtitle-list {
            margin-top: 20px;
        }
        .subtitle-item {
            background: #fff;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            padding: 16px;
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .subtitle-info {
            flex: 1;
        }
        .subtitle-label {
            font-weight: 500;
            color: #333;
            margin-bottom: 4px;
        }
        .subtitle-meta {
            font-size: 13px;
            color: #666;
        }
        .subtitle-actions {
            display: flex;
            gap: 8px;
        }
        .btn-small {
            padding: 6px 12px;
            font-size: 13px;
        }
        .btn-danger {
            background: #d93025;
        }
        .btn-danger:hover {
            background: #a71e15;
        }
        .btn-secondary {
            background: #5f6368;
        }
        .btn-secondary:hover {
            background: #3c4043;
        }
        .badge {
            background: #1a73e8;
            color: white;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 11px;
            margin-left: 8px;
        }
        .badge-success {
            background: #34a853;
        }
        .badge-warning {
            background: #fbbc04;
            color: #333;
        }
        .back-link {
            display: inline-block;
            margin-bottom: 20px;
            color: #1a73e8;
            text-decoration: none;
        }
        .back-link:hover {
            text-decoration: underline;
        }
        .info-box {
            background: #e8f0fe;
            padding: 12px 16px;
            border-radius: 4px;
            margin-bottom: 20px;
            font-size: 14px;
            color: #174ea6;
        }
    </style>
</head>
<body>
    <div class="container">
        <a href="<?php echo $cfg['main_url']; ?>/watch?v=<?php echo htmlspecialchars($file_key); ?>" class="back-link">
            ← Back to Video
        </a>

        <h1>Manage Subtitles</h1>
        <?php if (isset($file_info)): ?>
            <div class="file-title">For: <strong><?php echo htmlspecialchars($file_info['file_title']); ?></strong></div>
        <?php endif; ?>

        <?php if ($error_message): ?>
            <div class="message error"><?php echo htmlspecialchars($error_message); ?></div>
        <?php endif; ?>

        <?php if ($notice_message): ?>
            <div class="message notice"><?php echo htmlspecialchars($notice_message); ?></div>
        <?php endif; ?>

        <?php if ($cfg['subtitles_enabled'] == 1 && isset($file_info)): ?>
            <div class="info-box">
                📝 Upload subtitle files in .VTT or .SRT format. Maximum file size: <?php echo round($cfg['subtitles_max_size'] / 1048576, 2); ?>MB.
                You can upload up to <?php echo $cfg['subtitles_max_per_video']; ?> subtitle tracks per video.
            </div>

            <div class="upload-form">
                <h3 style="margin-top: 0;">Upload New Subtitle</h3>
                <form method="POST" enctype="multipart/form-data">
                    <div class="form-group">
                        <label for="subtitle_file">Subtitle File (.vtt or .srt)</label>
                        <input type="file" id="subtitle_file" name="subtitle_file" accept=".vtt,.srt" required>
                    </div>

                    <div class="form-group">
                        <label for="language">Language Code</label>
                        <select id="language" name="language" required>
                            <option value="en">English (en)</option>
                            <option value="es">Spanish (es)</option>
                            <option value="fr">French (fr)</option>
                            <option value="de">German (de)</option>
                            <option value="it">Italian (it)</option>
                            <option value="pt">Portuguese (pt)</option>
                            <option value="ru">Russian (ru)</option>
                            <option value="ja">Japanese (ja)</option>
                            <option value="ko">Korean (ko)</option>
                            <option value="zh">Chinese (zh)</option>
                            <option value="ar">Arabic (ar)</option>
                            <option value="hi">Hindi (hi)</option>
                        </select>
                    </div>

                    <div class="form-group">
                        <label for="label">Display Label</label>
                        <input type="text" id="label" name="label" placeholder="e.g., English, Spanish, etc." required>
                    </div>

                    <div class="form-group checkbox-group">
                        <input type="checkbox" id="is_default" name="is_default">
                        <label for="is_default" style="margin-bottom: 0;">Set as default subtitle</label>
                    </div>

                    <button type="submit" name="upload_subtitle">Upload Subtitle</button>
                </form>
            </div>

            <div class="subtitle-list">
                <h3>Existing Subtitles</h3>
                <?php if (empty($subtitles)): ?>
                    <p style="color: #666; font-style: italic;">No subtitles uploaded yet.</p>
                <?php else: ?>
                    <?php foreach ($subtitles as $sub): ?>
                        <div class="subtitle-item">
                            <div class="subtitle-info">
                                <div class="subtitle-label">
                                    <?php echo htmlspecialchars($sub['sub_label']); ?> (<?php echo htmlspecialchars($sub['sub_language']); ?>)
                                    <?php if ($sub['sub_default'] == 1): ?>
                                        <span class="badge badge-success">Default</span>
                                    <?php endif; ?>
                                    <?php if ($sub['active'] == 0): ?>
                                        <span class="badge badge-warning">Pending Approval</span>
                                    <?php endif; ?>
                                    <?php if ($sub['sub_auto_generated'] == 1): ?>
                                        <span class="badge">Auto-generated</span>
                                    <?php endif; ?>
                                </div>
                                <div class="subtitle-meta">
                                    Format: <?php echo strtoupper($sub['sub_format']); ?> |
                                    Size: <?php echo round($sub['sub_filesize'] / 1024, 2); ?> KB |
                                    Uploaded: <?php echo date('M d, Y', strtotime($sub['upload_date'])); ?>
                                </div>
                            </div>
                            <div class="subtitle-actions">
                                <?php if ($sub['sub_default'] != 1): ?>
                                    <form method="POST" style="display: inline;">
                                        <input type="hidden" name="sub_id" value="<?php echo $sub['sub_id']; ?>">
                                        <button type="submit" name="set_default" class="btn-small btn-secondary">Set as Default</button>
                                    </form>
                                <?php endif; ?>
                                <form method="POST" style="display: inline;">
                                    <input type="hidden" name="sub_id" value="<?php echo $sub['sub_id']; ?>">
                                    <button type="submit" name="delete_subtitle" class="btn-small btn-danger" onclick="return confirm('Are you sure you want to delete this subtitle?')">Delete</button>
                                </form>
                            </div>
                        </div>
                    <?php endforeach; ?>
                <?php endif; ?>
            </div>
        <?php else: ?>
            <p style="color: #666;">Subtitles are not enabled on this platform or file not found.</p>
        <?php endif; ?>
    </div>
</body>
</html>