<?php
/**
 * Notification Preferences API
 * 
 * GET /api/notification_preferences.php - Get user preferences
 * POST /api/notification_preferences.php - Update preferences
 */

require_once dirname(__DIR__) . '/f_core/config.boot.php';
require_once dirname(__DIR__) . '/f_core/f_classes/class.notifications.php';

header('Content-Type: application/json');

// Require authentication
session_start();
if (empty($_SESSION['user_id'])) {
    http_response_code(401);
    echo json_encode(['success' => false, 'error' => 'Authentication required']);
    exit;
}

$usr_id = $_SESSION['user_id'];
$notifications = new VNotifications();

$method = $_SERVER['REQUEST_METHOD'];

if ($method === 'GET') {
    // Get preferences
    $prefs = $notifications->getPreferences($usr_id);
    
    echo json_encode([
        'success' => true,
        'data' => $prefs
    ]);
    
} elseif ($method === 'POST') {
    // Update preferences
    $input = json_decode(file_get_contents('php://input'), true);
    
    if (!$input) {
        // Try form data
        $input = $_POST;
    }
    
    $result = $notifications->updatePreferences($usr_id, $input);
    
    if ($result) {
        echo json_encode([
            'success' => true,
            'data' => $notifications->getPreferences($usr_id)
        ]);
    } else {
        http_response_code(400);
        echo json_encode(['success' => false, 'error' => 'Failed to update preferences']);
    }
    
} else {
    http_response_code(405);
    echo json_encode(['success' => false, 'error' => 'Method not allowed']);
}