{% extends "base.html" %}

{% block title %}Settings{% endblock %}

{% block content %}
<div class="card-container">
    <div class="card">
        <h3>Manage Users (Legacy)</h3>
        <ul class="user-list">
            {% for user in users %}
            <li data-user-id="{{ user.id }}" data-username="{{ user.username }}" data-email="{{ user.email if user.email else '' }}" data-role="{{ user.role }}">
                <span class="user-name">{{ user.username }}</span>
                <span class="user-role">Role: {{ user.role }}</span>
                <button class="btn edit-user-btn" data-user-id="{{ user.id }}" data-username="{{ user.username }}" data-email="{{ user.email if user.email else '' }}" data-role="{{ user.role }}">Edit User</button>
                <button class="btn delete-btn delete-user-btn" data-user-id="{{ user.id }}" data-username="{{ user.username }}">Delete User</button>
            </li>
            {% endfor %}
        </ul>
        <button id="create-user-btn" class="btn create-btn">Create User</button>
    </div>

    <div class="card">
        <h3>External Server Settings</h3>
        <form method="POST" action="{{ url_for('main.save_external_db') }}" class="form-centered">
            <label for="db_server_domain">Server Domain/IP Address:</label>
            <input type="text" id="db_server_domain" name="server_domain" value="{{ external_settings.get('server_domain', '') }}" required>
            <label for="db_port">Port:</label>
            <input type="number" id="db_port" name="port" value="{{ external_settings.get('port', '') }}" required>
            <label for="db_database_name">Database Name:</label>
            <input type="text" id="db_database_name" name="database_name" value="{{ external_settings.get('database_name', '') }}" required>
            <label for="db_username">Username:</label>
            <input type="text" id="db_username" name="username" value="{{ external_settings.get('username', '') }}" required>
            <label for="db_password">Password:</label>
            <input type="password" id="db_password" name="password" value="{{ external_settings.get('password', '') }}" required>
            <button type="submit" class="btn">Save/Update External Database Info Settings</button>
        </form>
    </div>

    <div class="card" style="margin-top: 32px;">
        <h3>🎯 User & Permissions Management</h3>
        <p><strong>Simplified 4-Tier System:</strong> Superadmin → Admin → Manager → Worker</p>
        <p>Streamlined interface with module-based permissions (Quality, Warehouse, Labels)</p>
        <div style="margin-top: 15px;">
            <a href="{{ url_for('main.user_management_simple') }}" class="btn" style="background-color: #2196f3; color: white; margin-right: 10px;">
                🎯 Manage Users (Simplified)
            </a>
            
        </div>
        <small style="display: block; margin-top: 10px; color: #666;">
            Recommended: Use the simplified user management for easier administration
        </small>
    </div>

    {% if session.role in ['superadmin', 'admin'] %}
    <div class="card backup-card" style="margin-top: 32px;">
        <h3>💾 Database Backup Management</h3>
        <p><strong>Automated Backup System:</strong> Schedule and manage database backups</p>
        
        <!-- Backup Controls -->
        <div class="backup-controls">
            <h4 style="margin-top: 0;">Quick Actions</h4>
            <button id="backup-now-btn" class="btn" style="background-color: #4caf50; color: white; margin-right: 10px;">
                ⚡ Backup Now
            </button>
            <button id="refresh-backups-btn" class="btn" style="background-color: #2196f3; color: white;">
                🔄 Refresh List
            </button>
        </div>

        <!-- Schedule Configuration -->
        <div class="backup-schedule">
            <h4 style="margin-top: 0;">Backup Schedule</h4>
            <form id="backup-schedule-form" class="schedule-form">
                <div>
                    <label for="schedule-enabled">
                        <input type="checkbox" id="schedule-enabled" name="enabled"> Enable Scheduled Backups
                    </label>
                </div>
                <div>
                    <label for="schedule-time">Backup Time:</label>
                    <input type="time" id="schedule-time" name="time" value="02:00">
                </div>
                <div>
                    <label for="schedule-frequency">Frequency:</label>
                    <select id="schedule-frequency" name="frequency">
                        <option value="daily">Daily</option>
                        <option value="weekly">Weekly</option>
                        <option value="monthly">Monthly</option>
                    </select>
                </div>
                <div>
                    <label for="retention-days">Keep backups for (days):</label>
                    <input type="number" id="retention-days" name="retention_days" value="30" min="1" max="365">
                </div>
                <div style="grid-column: span 2;">
                    <button type="submit" class="btn" style="background-color: #ff9800; color: white;">
                        💾 Save Schedule
                    </button>
                </div>
            </form>
        </div>

        <!-- Backup List -->
        <div style="margin-top: 20px;">
            <h4>Available Backups</h4>
            <div id="backup-list" class="backup-list-container">
                <p style="text-align: center; color: #999;">Loading backups...</p>
            </div>
        </div>

        <!-- Backup Path Info -->
        <div class="backup-info">
            <strong>ℹ️ Backup Location:</strong> <code id="backup-path-display">/srv/quality_app/backups</code>
            <br>
            <small>Configure backup path in docker-compose.yml (BACKUP_PATH environment variable)</small>
        </div>
        
        <!-- Restore Database Section (Superadmin Only) -->
        {% if current_user.role == 'superadmin' %}
        <div class="restore-section" style="margin-top: 30px; padding: 20px; border: 2px solid #ff9800; border-radius: 8px; background: #fff3e0;">
            <h4 style="margin: 0 0 10px 0; color: #e65100;">⚠️ Restore Database</h4>
            <p style="margin: 0 0 15px 0; color: #e65100; font-weight: bold;">
                WARNING: Restoring will permanently replace ALL current data with the backup data. This action cannot be undone!
            </p>
            
            <!-- Upload External Backup File -->
            <div style="margin-bottom: 20px; padding: 15px; background: #e3f2fd; border: 1px solid #2196f3; border-radius: 4px;">
                <h5 style="margin: 0 0 10px 0; color: #1976d2;">📤 Upload External Backup File</h5>
                <p style="margin: 0 0 10px 0; font-size: 0.9em; color: #555;">
                    Upload a backup file from another server or external source. File will be saved to the backups directory.
                </p>
                <div style="display: flex; gap: 10px; align-items: center;">
                    <input type="file" id="backup-file-upload" accept=".sql" style="flex: 1; padding: 8px; border: 1px solid #ccc; border-radius: 4px;">
                    <button id="upload-backup-btn" class="btn" style="background: #2196f3; color: white; padding: 10px 20px; white-space: nowrap;">
                        ⬆️ Upload File
                    </button>
                </div>
                <small style="color: #666; display: block; margin-top: 5px;">
                    Accepted format: .sql files only | Max size: 100MB
                </small>
            </div>
            
            <!-- Select Backup to Restore -->
            <div style="margin-bottom: 15px;">
                <label for="restore-backup-select" style="display: block; margin-bottom: 5px; font-weight: bold;">Select Backup to Restore:</label>
                <select id="restore-backup-select" style="width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px;">
                    <option value="">-- Select a backup file --</option>
                </select>
            </div>
            <button id="restore-btn" class="btn" style="background: #ff5722; color: white; padding: 10px 20px; width: 100%; font-weight: bold;" disabled>
                🔄 Restore Database from Selected Backup
            </button>
        </div>
        {% endif %}
    </div>

    <style>
        /* Backup Card Styles */
        .backup-card {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .backup-controls {
            margin-top: 20px;
            padding: 15px;
            background: #f5f5f5;
            border-radius: 8px;
        }

        .backup-schedule {
            margin-top: 20px;
            padding: 15px;
            background: #f9f9f9;
            border-radius: 8px;
        }

        .schedule-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .schedule-form label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
        }

        .schedule-form input[type="time"],
        .schedule-form input[type="number"],
        .schedule-form select {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
            background: #fff;
            color: #333;
        }

        .backup-list-container {
            max-height: 400px;
            overflow-y: auto;
            background: #fafafa;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 10px;
        }

        .backup-list-container table {
            background: #fff;
        }

        .backup-list-container th {
            background: #f0f0f0;
            color: #333;
        }

        .backup-list-container tr {
            border-bottom: 1px solid #ddd;
        }

        .backup-info {
            margin-top: 15px;
            padding: 10px;
            background: #e3f2fd;
            border-left: 4px solid #2196f3;
            border-radius: 4px;
            color: #0d47a1;
        }

        .backup-info code {
            background: #bbdefb;
            padding: 2px 6px;
            border-radius: 3px;
            color: #01579b;
        }

        .backup-info small {
            color: #1565c0;
        }

        /* Dark Mode Styles */
        body.dark-mode .backup-card {
            background: #2d2d2d;
            color: #e0e0e0;
        }

        body.dark-mode .backup-controls {
            background: #3a3a3a;
        }

        body.dark-mode .backup-schedule {
            background: #353535;
        }

        body.dark-mode .schedule-form input[type="time"],
        body.dark-mode .schedule-form input[type="number"],
        body.dark-mode .schedule-form select {
            background: #2d2d2d;
            color: #e0e0e0;
            border-color: #555;
        }

        body.dark-mode .schedule-form label {
            color: #e0e0e0;
        }

        body.dark-mode .backup-list-container {
            background: #2d2d2d;
            border-color: #555;
        }

        body.dark-mode .backup-list-container table {
            background: #2d2d2d;
            color: #e0e0e0;
        }

        body.dark-mode .backup-list-container th {
            background: #3a3a3a;
            color: #e0e0e0;
        }

        body.dark-mode .backup-list-container tr {
            border-bottom-color: #555;
        }

        body.dark-mode .backup-list-container td {
            color: #e0e0e0;
        }

        body.dark-mode .backup-info {
            background: #1e3a5f;
            border-left-color: #2196f3;
            color: #90caf9;
        }

        body.dark-mode .backup-info code {
            background: #2d4a6d;
            color: #64b5f6;
        }

        body.dark-mode .backup-info small {
            color: #81c784;
        }

        /* Dark mode for restore section */
        body.dark-mode .restore-section {
            background: #3a2a1f !important;
            border-color: #ff9800 !important;
        }

        body.dark-mode .restore-section h4,
        body.dark-mode .restore-section p {
            color: #ffb74d !important;
        }

        body.dark-mode .restore-section label {
            color: #e0e0e0;
        }

        body.dark-mode .restore-section select {
            background: #2d2d2d;
            color: #e0e0e0;
            border-color: #555;
        }

        /* Dark mode for upload section */
        body.dark-mode .restore-section div[style*="background: #e3f2fd"] {
            background: #1a3a52 !important;
            border-color: #2196f3 !important;
        }

        body.dark-mode .restore-section h5 {
            color: #64b5f6 !important;
        }

        body.dark-mode .restore-section input[type="file"] {
            background: #2d2d2d;
            color: #e0e0e0;
            border-color: #555;
        }
    </style>
    {% endif %}
</div>

<!-- Popup for creating/editing a user -->
<div id="user-popup" class="popup" style="display:none; position:fixed; top:0; left:0; width:100vw; height:100vh; background:var(--app-overlay-bg, rgba(30,41,59,0.85)); z-index:9999; align-items:center; justify-content:center;">
    <div class="popup-content" style="margin:auto; padding:32px; border-radius:8px; box-shadow:0 2px 8px #333; min-width:320px; max-width:400px; text-align:center;">
        <h3 id="user-popup-title">Create/Edit User</h3>
        <form id="user-form" method="POST" action="{{ url_for('main.create_user') }}">
            <input type="hidden" id="user-id" name="user_id">
            <label for="user_username">Username:</label>
            <input type="text" id="user_username" name="username" required>
            <label for="user_email">Email (Optional):</label>
            <input type="email" id="user_email" name="email">
            <label for="user_password">Password:</label>
            <input type="password" id="user_password" name="password" required>
            <label for="user_role">Role:</label>
            <select id="user_role" name="role" required>
                <option value="superadmin">Superadmin</option>
                <option value="admin">Admin</option>
                <option value="manager">Manager</option>
                <option value="warehouse_manager">Warehouse Manager</option>
                <option value="warehouse_worker">Warehouse Worker</option>
                <option value="quality_manager">Quality Manager</option>
                <option value="quality_worker">Quality Worker</option>
            </select>
            <button type="submit" class="btn">Save</button>
            <button type="button" id="close-user-popup-btn" class="btn cancel-btn">Cancel</button>
        </form>
    </div>
</div>

<!-- Popup for confirming user deletion -->
<div id="delete-user-popup" class="popup">
    <div class="popup-content">
        <h3>Do you really want to delete the user <span id="delete-username"></span>?</h3>
        <form id="delete-user-form" method="POST" action="{{ url_for('main.delete_user') }}">
            <input type="hidden" id="delete-user-id" name="user_id">
            <button type="submit" class="btn delete-confirm-btn">Yes</button>
            <button type="button" id="close-delete-popup-btn" class="btn cancel-btn">No</button>
        </form>
    </div>
</div>
<script>
document.getElementById('create-user-btn').onclick = function() {
    document.getElementById('user-popup').style.display = 'flex';
    document.getElementById('user-popup-title').innerText = 'Create User';
    document.getElementById('user-form').reset();
    document.getElementById('user-form').setAttribute('action', '{{ url_for("main.create_user") }}');
    document.getElementById('user-id').value = '';
    document.getElementById('user_password').required = true;
    document.getElementById('user_password').placeholder = '';
    document.getElementById('user_username').readOnly = false;
};

document.getElementById('close-user-popup-btn').onclick = function() {
    document.getElementById('user-popup').style.display = 'none';
};

// Edit User button logic
Array.from(document.getElementsByClassName('edit-user-btn')).forEach(function(btn) {
    btn.onclick = function() {
        document.getElementById('user-popup').style.display = 'flex';
        document.getElementById('user-popup-title').innerText = 'Edit User';
        document.getElementById('user-id').value = btn.getAttribute('data-user-id');
        document.getElementById('user_username').value = btn.getAttribute('data-username');
        document.getElementById('user_email').value = btn.getAttribute('data-email') || '';
        document.getElementById('user_role').value = btn.getAttribute('data-role');
        document.getElementById('user_password').value = '';
        document.getElementById('user_password').required = false;
        document.getElementById('user_password').placeholder = 'Leave blank to keep current password';
        document.getElementById('user_username').readOnly = true;
        document.getElementById('user-form').setAttribute('action', '{{ url_for("main.edit_user") }}');
    };
});

// Delete User button logic  
Array.from(document.getElementsByClassName('delete-user-btn')).forEach(function(btn) {
    btn.onclick = function() {
        document.getElementById('delete-user-popup').style.display = 'flex';
        document.getElementById('delete-username').innerText = btn.getAttribute('data-username');
        document.getElementById('delete-user-id').value = btn.getAttribute('data-user-id');
    };
});

document.getElementById('close-delete-popup-btn').onclick = function() {
    document.getElementById('delete-user-popup').style.display = 'none';
};

// ========================================
// Database Backup Management Functions
// ========================================

// Load backup schedule on page load
function loadBackupSchedule() {
    fetch('/api/backup/schedule')
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                document.getElementById('schedule-enabled').checked = data.schedule.enabled;
                document.getElementById('schedule-time').value = data.schedule.time;
                document.getElementById('schedule-frequency').value = data.schedule.frequency;
                document.getElementById('retention-days').value = data.schedule.retention_days;
            }
        })
        .catch(error => console.error('Error loading schedule:', error));
}

// Load backup list
function loadBackupList() {
    const backupList = document.getElementById('backup-list');
    if (!backupList) return;
    
    backupList.innerHTML = '<p style="text-align: center; color: #999;">Loading backups...</p>';
    
    fetch('/api/backup/list')
        .then(response => response.json())
        .then(data => {
            if (data.success && data.backups.length > 0) {
                let html = '<table style="width: 100%; border-collapse: collapse;">';
                html += '<thead><tr style="background: #f0f0f0;"><th style="padding: 10px; text-align: left;">Filename</th><th>Size</th><th>Created</th><th>Actions</th></tr></thead>';
                html += '<tbody>';
                
                data.backups.forEach(backup => {
                    html += `<tr style="border-bottom: 1px solid #ddd;">
                        <td style="padding: 10px;">${backup.filename}</td>
                        <td style="text-align: center;">${backup.size_mb} MB</td>
                        <td style="text-align: center;">${backup.created}</td>
                        <td style="text-align: center;">
                            <button onclick="downloadBackup('${backup.filename}')" class="btn" style="background: #2196f3; color: white; padding: 5px 10px; margin: 2px;">⬇️ Download</button>
                            <button onclick="deleteBackup('${backup.filename}')" class="btn" style="background: #f44336; color: white; padding: 5px 10px; margin: 2px;">🗑️ Delete</button>
                        </td>
                    </tr>`;
                });
                
                html += '</tbody></table>';
                backupList.innerHTML = html;
                
                // Populate restore dropdown
                const restoreSelect = document.getElementById('restore-backup-select');
                if (restoreSelect) {
                    restoreSelect.innerHTML = '<option value="">-- Select a backup file --</option>';
                    data.backups.forEach(backup => {
                        restoreSelect.innerHTML += `<option value="${backup.filename}">${backup.filename} (${backup.size_mb} MB - ${backup.created})</option>`;
                    });
                }
            } else {
                backupList.innerHTML = '<p style="text-align: center; color: #999;">No backups available</p>';
                // Clear restore dropdown
                const restoreSelect = document.getElementById('restore-backup-select');
                if (restoreSelect) {
                    restoreSelect.innerHTML = '<option value="">-- No backups available --</option>';
                }
            }
        })
        .catch(error => {
            console.error('Error loading backups:', error);
            backupList.innerHTML = '<p style="text-align: center; color: #f44336;">Error loading backups</p>';
        });
}

// Backup now button
document.getElementById('backup-now-btn')?.addEventListener('click', function() {
    const btn = this;
    btn.disabled = true;
    btn.innerHTML = '⏳ Creating backup...';
    
    fetch('/api/backup/create', {
        method: 'POST'
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('✅ ' + data.message + '\nFile: ' + data.filename + '\nSize: ' + data.size);
            loadBackupList();
        } else {
            alert('❌ ' + data.message);
        }
        btn.disabled = false;
        btn.innerHTML = '⚡ Backup Now';
    })
    .catch(error => {
        console.error('Error creating backup:', error);
        alert('❌ Failed to create backup');
        btn.disabled = false;
        btn.innerHTML = '⚡ Backup Now';
    });
});

// Refresh backups button
document.getElementById('refresh-backups-btn')?.addEventListener('click', function() {
    loadBackupList();
});

// Save schedule form
document.getElementById('backup-schedule-form')?.addEventListener('submit', function(e) {
    e.preventDefault();
    
    const formData = {
        enabled: document.getElementById('schedule-enabled').checked,
        time: document.getElementById('schedule-time').value,
        frequency: document.getElementById('schedule-frequency').value,
        retention_days: parseInt(document.getElementById('retention-days').value)
    };
    
    fetch('/api/backup/schedule', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify(formData)
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('✅ ' + data.message);
        } else {
            alert('❌ ' + data.message);
        }
    })
    .catch(error => {
        console.error('Error saving schedule:', error);
        alert('❌ Failed to save schedule');
    });
});

// Download backup function
function downloadBackup(filename) {
    window.location.href = `/api/backup/download/${filename}`;
}

// Delete backup function
function deleteBackup(filename) {
    if (confirm(`Are you sure you want to delete backup: ${filename}?`)) {
        fetch(`/api/backup/delete/${filename}`, {
            method: 'DELETE'
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                alert('✅ ' + data.message);
                loadBackupList();
            } else {
                alert('❌ ' + data.message);
            }
        })
        .catch(error => {
            console.error('Error deleting backup:', error);
            alert('❌ Failed to delete backup');
        });
    }
}

// Restore dropdown change - enable/disable button
document.getElementById('restore-backup-select')?.addEventListener('change', function() {
    const restoreBtn = document.getElementById('restore-btn');
    if (this.value) {
        restoreBtn.disabled = false;
    } else {
        restoreBtn.disabled = true;
    }
});

// Restore backup function
document.getElementById('restore-btn')?.addEventListener('click', function() {
    const filename = document.getElementById('restore-backup-select').value;
    
    if (!filename) {
        alert('❌ Please select a backup file to restore');
        return;
    }
    
    // First confirmation
    const firstConfirm = confirm(
        `⚠️ CRITICAL WARNING ⚠️\n\n` +
        `You are about to RESTORE the database from:\n${filename}\n\n` +
        `This will PERMANENTLY DELETE all current data and replace it with the backup data.\n\n` +
        `This action CANNOT be undone!\n\n` +
        `Do you want to continue?`
    );
    
    if (!firstConfirm) {
        return;
    }
    
    // Second confirmation (require typing confirmation)
    const secondConfirm = prompt(
        `⚠️ FINAL CONFIRMATION ⚠️\n\n` +
        `Type "RESTORE" in capital letters to confirm you understand:\n` +
        `• All current database data will be PERMANENTLY DELETED\n` +
        `• This action is IRREVERSIBLE\n` +
        `• Users may experience downtime during restore\n\n` +
        `Type RESTORE to continue:`
    );
    
    if (secondConfirm !== 'RESTORE') {
        alert('❌ Restore cancelled - confirmation text did not match');
        return;
    }
    
    // Perform restore
    const btn = this;
    btn.disabled = true;
    btn.innerHTML = '⏳ Restoring database... Please wait...';
    
    fetch(`/api/backup/restore/${filename}`, {
        method: 'POST'
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert(
                `✅ DATABASE RESTORE COMPLETE!\n\n` +
                `${data.message}\n\n` +
                `The application will now reload to apply changes.`
            );
            // Reload the page to ensure all data is fresh
            window.location.reload();
        } else {
            alert(`❌ RESTORE FAILED\n\n${data.message}`);
            btn.disabled = false;
            btn.innerHTML = '🔄 Restore Database from Selected Backup';
        }
    })
    .catch(error => {
        console.error('Error restoring backup:', error);
        alert(`❌ RESTORE FAILED\n\nAn error occurred while restoring the database.`);
        btn.disabled = false;
        btn.innerHTML = '🔄 Restore Database from Selected Backup';
    });
});

// Upload backup file
document.getElementById('upload-backup-btn')?.addEventListener('click', function() {
    const fileInput = document.getElementById('backup-file-upload');
    const file = fileInput.files[0];
    
    if (!file) {
        alert('❌ Please select a file to upload');
        return;
    }
    
    // Validate file extension
    if (!file.name.toLowerCase().endsWith('.sql')) {
        alert('❌ Invalid file format. Only .sql files are allowed.');
        return;
    }
    
    // Validate file size (10GB max for large databases)
    const maxSize = 10 * 1024 * 1024 * 1024; // 10GB in bytes
    if (file.size > maxSize) {
        alert('❌ File is too large. Maximum size is 10GB.');
        return;
    }
    
    // Warn about large files
    const warningSize = 1 * 1024 * 1024 * 1024; // 1GB
    if (file.size > warningSize) {
        const sizeGB = (file.size / (1024 * 1024 * 1024)).toFixed(2);
        if (!confirm(`⚠️ Large File Warning\n\nYou are uploading a ${sizeGB} GB file.\nThis may take several minutes.\n\nDo you want to continue?`)) {
            return;
        }
    }
    
    // Prepare form data
    const formData = new FormData();
    formData.append('backup_file', file);
    
    // Disable button and show loading
    const btn = this;
    btn.disabled = true;
    btn.innerHTML = '⏳ Uploading and validating...';
    
    // Upload file
    fetch('/api/backup/upload', {
        method: 'POST',
        body: formData
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            // Build detailed success message with validation info
            let message = `✅ File uploaded and validated successfully!\n\n`;
            message += `Filename: ${data.filename}\n`;
            message += `Size: ${data.size}\n`;
            
            // Add validation details if available
            if (data.validation && data.validation.details) {
                const details = data.validation.details;
                message += `\n📊 Validation Results:\n`;
                message += `• Lines: ${details.line_count || 'N/A'}\n`;
                message += `• Has Users Table: ${details.has_users_table ? '✓' : '✗'}\n`;
                message += `• Has Data: ${details.has_insert_statements ? '✓' : '✗'}\n`;
            }
            
            // Add warnings if any
            if (data.validation && data.validation.warnings && data.validation.warnings.length > 0) {
                message += `\n⚠️ Warnings:\n`;
                data.validation.warnings.forEach(warning => {
                    message += `• ${warning}\n`;
                });
            }
            
            message += `\nThe file is now available in the restore dropdown.`;
            
            alert(message);
            
            // Clear file input
            fileInput.value = '';
            // Reload backup list to show the new file
            loadBackupList();
        } else {
            // Build detailed error message
            let message = `❌ Upload failed\n\n${data.message}`;
            
            // Add validation details if available
            if (data.validation_details) {
                message += `\n\n📊 Validation Details:\n`;
                const details = data.validation_details;
                if (details.size_mb) message += `• File Size: ${details.size_mb} MB\n`;
                if (details.line_count) message += `• Lines: ${details.line_count}\n`;
            }
            
            // Add warnings if any
            if (data.warnings && data.warnings.length > 0) {
                message += `\n⚠️ Issues Found:\n`;
                data.warnings.forEach(warning => {
                    message += `• ${warning}\n`;
                });
            }
            
            alert(message);
        }
        btn.disabled = false;
        btn.innerHTML = '⬆️ Upload File';
    })
    .catch(error => {
        console.error('Error uploading backup:', error);
        alert('❌ Failed to upload file');
        btn.disabled = false;
        btn.innerHTML = '⬆️ Upload File';
    });
});

// Load backup data on page load
if (document.getElementById('backup-list')) {
    loadBackupSchedule();
    loadBackupList();
}

</script>
{% endblock %}