<?php
header("Content-Type: application/json; charset=UTF-8");
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, POST, DELETE, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type, Authorization");

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') exit;

define('ENCRYPTION_KEY', 'MaCleSecreteSuperRobuste123!');

$pdo = new PDO("mysql:host=localhost;dbname=mon_cinema;charset=utf8mb4", "root", "", [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
]);

function checkAuth($pdo) {
    $stmt = $pdo->query("SELECT COUNT(*) FROM users");
    if ($stmt->fetchColumn() == 0) return;
    $token = $_SERVER['HTTP_AUTHORIZATION'] ?? '';
    if ($token !== md5(ENCRYPTION_KEY . 'session')) {
        http_response_code(403);
        echo json_encode(["error" => "Non autorisé"]);
        exit;
    }
}

$action = $_GET['action'] ?? '';
$data = json_decode(file_get_contents('php://input'), true) ?? [];

switch ($action) {
    case 'get_films':
        $crit = $pdo->query("SELECT *, 'critique' AS type FROM critiques")->fetchAll();
        $video = $pdo->query("SELECT *, 'videotheque' AS type FROM videotheque")->fetchAll();
        echo json_encode(array_merge($crit, $video));
        break;

    case 'login':
        $stmt = $pdo->query("SELECT COUNT(*) FROM users");
        if ($stmt->fetchColumn() == 0) {
            echo json_encode(["success" => true, "token" => md5(ENCRYPTION_KEY . 'session'), "blank" => true]);
        } else {
            $stmt = $pdo->prepare("SELECT password_hash FROM users WHERE username = 'admin'");
            $stmt->execute();
            $user = $stmt->fetch();
            if ($user && password_verify($data['password'] ?? '', $user['password_hash'])) {
                echo json_encode(["success" => true, "token" => md5(ENCRYPTION_KEY . 'session'), "blank" => false]);
            } else {
                http_response_code(401);
                echo json_encode(["error" => "Erreur"]);
            }
        }
        break;

    case 'bulk_delete':
        checkAuth($pdo);
        $ids = $data['ids'] ?? [];
        $table = ($data['type'] === 'videotheque') ? 'videotheque' : 'critiques';
        if (!empty($ids)) {
            $placeholders = implode(',', array_fill(0, count($ids), '?'));
            $stmt = $pdo->prepare("DELETE FROM $table WHERE id IN ($placeholders)");
            $stmt->execute($ids);
            echo json_encode(["success" => true]);
        }
        break;

    case 'delete_film':
        checkAuth($pdo);
        $table = ($_GET['type'] === 'videotheque') ? 'videotheque' : 'critiques';
        $stmt = $pdo->prepare("DELETE FROM $table WHERE id = ?");
        $stmt->execute([$_GET['id']]);
        echo json_encode(["success" => true]);
        break;
}