<?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");
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Pragma: no-cache");

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { http_response_code(200); exit; }

define('ENCRYPTION_KEY', 'MaCleSecreteSuperRobuste123!');
define('TMDB_CACHE_TTL', 86400); // 24h de cache TMDB

try {
    $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
    ]);
    $pdo->exec("CREATE TABLE IF NOT EXISTS users (id INT PRIMARY KEY, username VARCHAR(50) NOT NULL, password_hash VARCHAR(255) NOT NULL)");
    $pdo->exec("CREATE TABLE IF NOT EXISTS config (key_name VARCHAR(50) PRIMARY KEY, key_value TEXT NOT NULL)");
    $pdo->exec("CREATE TABLE IF NOT EXISTS critiques (id BIGINT PRIMARY KEY, title VARCHAR(255) NOT NULL, year VARCHAR(10), director VARCHAR(255), poster TEXT, rating DECIMAL(3,1) DEFAULT 3.0, review TEXT, streaming VARCHAR(255))");
    $pdo->exec("ALTER TABLE critiques MODIFY COLUMN rating DECIMAL(3,1) DEFAULT 3.0;");
    $pdo->exec("CREATE TABLE IF NOT EXISTS videotheque (id BIGINT PRIMARY KEY, title VARCHAR(255) NOT NULL, year VARCHAR(10), director VARCHAR(255), poster TEXT, format VARCHAR(50), length VARCHAR(50), publisher VARCHAR(255), ean_isbn13 VARCHAR(50), number_of_discs INT DEFAULT 1, aspect_ratio VARCHAR(50), description TEXT)");
    
    // 🆕 Table de cache TMDB (accélère massivement les imports répétés)
    $pdo->exec("CREATE TABLE IF NOT EXISTS cache_tmdb (
        cache_key VARCHAR(100) PRIMARY KEY,
        data TEXT NOT NULL,
        created_at INT NOT NULL
    )");
} catch (\PDOException $e) { echo json_encode(["error" => "Erreur BDD : " . $e->getMessage()]); exit; }

function makeStableId($title, $year) {
    $key = strtolower(trim($title ?? '')) . '|' . trim($year ?? '');
    return (abs(crc32($key)) % 2000000000) + 100000000;
}

function checkAuth($pdo) {
    $stmtCheck = $pdo->query("SELECT COUNT(*) FROM users");
    if ($stmtCheck->fetchColumn() == 0) return true;
    $token = $_SERVER['HTTP_AUTHORIZATION'] ?? '';
    if (empty($token) && function_exists('apache_request_headers')) {
        $headers = apache_request_headers();
        $token = $headers['Authorization'] ?? $headers['authorization'] ?? '';
    }
    if ($token !== md5(ENCRYPTION_KEY . 'session')) { http_response_code(403); echo json_encode(["error" => "Accès interdit."]); exit; }
}

function encryptData($data) {
    $iv = openssl_random_pseudo_bytes(16);
    $key = hash('sha256', ENCRYPTION_KEY, true);
    $encrypted = openssl_encrypt($data, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
    return base64_encode($encrypted . '::' . $iv);
}

function decryptData($encryptedStr) {
    $decoded = base64_decode($encryptedStr);
    if (strpos($decoded, '::') !== false) { list($encData, $iv) = explode('::', $decoded, 2); } else { return null; }
    $key = hash('sha256', ENCRYPTION_KEY, true);
    $iv = substr($iv, 0, 16);
    return openssl_decrypt($encData, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
}

function getTmdbApiKey($pdo) {
    $stmt = $pdo->prepare("SELECT key_value FROM config WHERE key_name = 'tmdb_api_key'");
    $stmt->execute();
    $row = $stmt->fetch();
    if (!$row) return null;
    return decryptData($row['key_value']);
}

// ── Récupération d'image via EAN (Open Library) ──
function fetchImageByEAN($ean) {
    if (empty($ean) || strlen($ean) < 10) return null;
    $url = "https://openlibrary.org/api/books?bibkeys=ISBN:{$ean}&jscmd=data&format=json";
    $res = httpGet($url, 5);
    if (!$res) return null;
    $data = json_decode($res, true);
    $key = "ISBN:{$ean}";
    if (isset($data[$key])) {
        if (!empty($data[$key]['cover']['large'])) return $data[$key]['cover']['large'];
        if (!empty($data[$key]['cover']['medium'])) return $data[$key]['cover']['medium'];
    }
    return null;
}

// ── HTTP unifié (cURL ou file_get_contents) ──
function httpGet($url, $timeout = 6) {
    if (function_exists('curl_init')) {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_USERAGENT, 'MonCinema/2.0');
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
        $res = curl_exec($ch);
        curl_close($ch);
        return $res ?: null;
    }
    $ctx = stream_context_create(['http' => ['timeout' => $timeout, 'user_agent' => 'MonCinema/2.0']]);
    return @file_get_contents($url, false, $ctx);
}

// ── 🚀 Récupération TMDB avec CACHE + curl_multi (parallèle) ──
function fetchTmdbData($title, $year, $apiKey, $pdo = null) {
    if (empty($apiKey) || empty($title)) return null;
    
    $cleanTitle = preg_replace('/\s*\[.*?\]\s*/', '', $title);
    $cleanTitle = trim($cleanTitle);
    $cacheKey = md5(strtolower($cleanTitle) . '|' . $year);
    
    // 1. Vérifier le cache BDD (évite 90% des appels après le 1er import)
    if ($pdo) {
        try {
            $stmt = $pdo->prepare("SELECT data, created_at FROM cache_tmdb WHERE cache_key = ?");
            $stmt->execute([$cacheKey]);
            $row = $stmt->fetch();
            if ($row && (time() - $row['created_at']) < TMDB_CACHE_TTL) {
                return json_decode($row['data'], true);
            }
        } catch (\Exception $e) { /* ignore */ }
    }
    
    // 2. Préparation des 3 URLs TMDB
    $searchUrl = "https://api.themoviedb.org/3/search/movie?api_key={$apiKey}&query=" . urlencode($cleanTitle) . "&year={$year}&language=fr-FR";
    
    // 3.  Exécution parallèle avec curl_multi (×3 plus rapide que séquentiel)
    $results = [];
    if (function_exists('curl_multi_init')) {
        $mh = curl_multi_init();
        $handles = [];
        
        $ch1 = curl_init($searchUrl);
        curl_setopt_array($ch1, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 6, CURLOPT_SSL_VERIFYPEER => false, CURLOPT_USERAGENT => 'MonCinema/2.0']);
        curl_multi_add_handle($mh, $ch1);
        $handles['search'] = $ch1;
        
        // On lance d'abord la recherche, puis on ajoutera les autres handles selon le résultat
        $running = 0;
        do { curl_multi_exec($mh, $running); curl_multi_select($mh); } while ($running > 0);
        
        $searchRes = curl_multi_getcontent($ch1);
        curl_multi_remove_handle($mh, $ch1);
        curl_close($ch1);
        
        if ($searchRes) {
            $searchData = json_decode($searchRes, true);
            if (!empty($searchData['results'])) {
                $movie = $searchData['results'][0];
                $movieId = $movie['id'];
                $poster = !empty($movie['poster_path']) ? "https://image.tmdb.org/t/p/w500" . $movie['poster_path'] : '';
                
                // Lancer credits + providers en parallèle
                $creditsUrl = "https://api.themoviedb.org/3/movie/{$movieId}/credits?api_key={$apiKey}&language=fr-FR";
                $watchUrl = "https://api.themoviedb.org/3/movie/{$movieId}/watch/providers?api_key={$apiKey}";
                
                $ch2 = curl_init($creditsUrl);
                $ch3 = curl_init($watchUrl);
                curl_setopt_array($ch2, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 6, CURLOPT_SSL_VERIFYPEER => false]);
                curl_setopt_array($ch3, [CURLOPT_RETURNTRANSFER => true, CURLOPT_TIMEOUT => 6, CURLOPT_SSL_VERIFYPEER => false]);
                
                curl_multi_add_handle($mh, $ch2);
                curl_multi_add_handle($mh, $ch3);
                
                $running = 0;
                do { curl_multi_exec($mh, $running); curl_multi_select($mh); } while ($running > 0);
                
                $creditsRes = curl_multi_getcontent($ch2);
                $watchRes = curl_multi_getcontent($ch3);
                
                curl_multi_remove_handle($mh, $ch2); curl_close($ch2);
                curl_multi_remove_handle($mh, $ch3); curl_close($ch3);
                curl_multi_close($mh);
                
                // Parsing
                $director = '';
                if ($creditsRes) {
                    $creditsData = json_decode($creditsRes, true);
                    if (!empty($creditsData['crew'])) {
                        foreach ($creditsData['crew'] as $crew) {
                            if ($crew['job'] === 'Director') { $director = $crew['name']; break; }
                        }
                    }
                }
                
                $streaming = '';
                if ($watchRes) {
                    $watchData = json_decode($watchRes, true);
                    $frProviders = $watchData['results']['FR'] ?? [];
                    $platforms = [];
                    if (!empty($frProviders['flatrate'])) { foreach ($frProviders['flatrate'] as $p) $platforms[] = $p['provider_name']; }
                    if (empty($platforms)) {
                        if (!empty($frProviders['rent'])) { foreach ($frProviders['rent'] as $p) $platforms[] = $p['provider_name'] . ' (loc.)'; }
                        if (!empty($frProviders['buy'])) { foreach ($frProviders['buy'] as $p) $platforms[] = $p['provider_name'] . ' (achat)'; }
                    }
                    if (!empty($platforms)) $streaming = implode(', ', array_unique($platforms));
                }
                
                $results = ['director' => $director, 'poster' => $poster, 'streaming' => $streaming];
            }
        }
    } else {
        // Fallback sans curl_multi (hébergement mutualisé basique)
        $searchRes = httpGet($searchUrl, 6);
        if ($searchRes) {
            $searchData = json_decode($searchRes, true);
            if (!empty($searchData['results'])) {
                $movie = $searchData['results'][0];
                $movieId = $movie['id'];
                $poster = !empty($movie['poster_path']) ? "https://image.tmdb.org/t/p/w500" . $movie['poster_path'] : '';
                
                $creditsRes = httpGet("https://api.themoviedb.org/3/movie/{$movieId}/credits?api_key={$apiKey}&language=fr-FR", 6);
                $watchRes = httpGet("https://api.themoviedb.org/3/movie/{$movieId}/watch/providers?api_key={$apiKey}", 6);
                
                $director = '';
                if ($creditsRes) {
                    $creditsData = json_decode($creditsRes, true);
                    if (!empty($creditsData['crew'])) {
                        foreach ($creditsData['crew'] as $crew) { if ($crew['job'] === 'Director') { $director = $crew['name']; break; } }
                    }
                }
                $streaming = '';
                if ($watchRes) {
                    $watchData = json_decode($watchRes, true);
                    $frProviders = $watchData['results']['FR'] ?? [];
                    $platforms = [];
                    if (!empty($frProviders['flatrate'])) { foreach ($frProviders['flatrate'] as $p) $platforms[] = $p['provider_name']; }
                    if (empty($platforms)) {
                        if (!empty($frProviders['rent'])) { foreach ($frProviders['rent'] as $p) $platforms[] = $p['provider_name'] . ' (loc.)'; }
                        if (!empty($frProviders['buy'])) { foreach ($frProviders['buy'] as $p) $platforms[] = $p['provider_name'] . ' (achat)'; }
                    }
                    if (!empty($platforms)) $streaming = implode(', ', array_unique($platforms));
                }
                $results = ['director' => $director, 'poster' => $poster, 'streaming' => $streaming];
            }
        }
    }
    
    // 4. Sauvegarder dans le cache BDD
    if (!empty($results) && $pdo) {
        try {
            $stmt = $pdo->prepare("REPLACE INTO cache_tmdb (cache_key, data, created_at) VALUES (?, ?, ?)");
            $stmt->execute([$cacheKey, json_encode($results), time()]);
        } catch (\Exception $e) { /* ignore */ }
    }
    
    return !empty($results) ? $results : null;
}

function detectFormat($title) {
    $t = strtoupper($title);
    if (strpos($t, '4K') !== false || strpos($t, 'UHD') !== false) return 'Blu-ray 4K';
    if (strpos($t, 'BLU-RAY') !== false || strpos($t, 'BLURAY') !== false) return 'Blu-ray';
    if (strpos($t, 'DVD') !== false) return 'DVD';
    if (strpos($t, 'VHS') !== false) return 'VHS';
    if (strpos($t, 'COFFRET') !== false || strpos($t, 'TRILOGIE') !== false) return 'Coffret';
    return 'DVD';
}

function extractYear($dateStr) {
    if (preg_match('/(\d{4})/', $dateStr, $matches)) return $matches[1];
    return '';
}

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

switch ($action) {
    case 'check_security_status':
        $stmt = $pdo->query("SELECT COUNT(*) FROM users");
        echo json_encode(["is_blank" => ($stmt->fetchColumn() == 0)]);
        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" => "Mot de passe incorrect."]); }
        }
        break;
        
    case 'setup_admin': case 'update_password':
        checkAuth($pdo);
        $pwd = $data['password'] ?? $data['new_password'] ?? '';
        $stmt = $pdo->prepare("REPLACE INTO users (id, username, password_hash) VALUES (1, 'admin', :pass)");
        $stmt->execute([':pass' => password_hash($pwd, PASSWORD_BCRYPT)]);
        echo json_encode(["success" => true]);
        break;
        
    case 'save_config':
        checkAuth($pdo);
        $keyName = $data['key_name'] ?? ''; $keyValue = $data['key_value'] ?? '';
        if ($keyName === 'tmdb_api_key' && !empty($keyValue)) {
            $stmt = $pdo->prepare("REPLACE INTO config (key_name, key_value) VALUES (?, ?)");
            $stmt->execute([$keyName, encryptData($keyValue)]);
            echo json_encode(["success" => true]);
        } else { http_response_code(400); echo json_encode(["error" => "Données invalides."]); }
        break;
        
    case 'get_films':
        // 🚀 Cache HTTP 5 min pour éviter de recharger à chaque visite
        $lastModified = filemtime(__FILE__);
        $ifModified = $_SERVER['HTTP_IF_MODIFIED_SINCE'] ?? null;
        if ($ifModified && strtotime($ifModified) >= $lastModified - 300) {
            http_response_code(304);
            exit;
        }
        header("Last-Modified: " . gmdate("D, d M Y H:i:s", $lastModified) . " GMT");
        header("Cache-Control: public, max-age=300");
        
        $crit = $pdo->query("SELECT *, 'critique' AS type FROM critiques ORDER BY id DESC")->fetchAll();
        $video = $pdo->query("SELECT *, 'videotheque' AS type FROM videotheque ORDER BY id DESC")->fetchAll();
        echo json_encode(array_merge($crit, $video));
        break;
        
    case 'save_film':
        checkAuth($pdo);
        $type = $data['type'] ?? 'critique';
        $id = !empty($data['id']) ? $data['id'] : makeStableId($data['title'] ?? '', $data['year'] ?? '0000');
        
        // 🚀 Skip TMDB si toutes les données sont déjà présentes
        $needTmdb = empty($data['director']) || empty($data['poster']) || (empty($data['streaming']) && $type === 'critique');
        if ($needTmdb) {
            $tmdbData = fetchTmdbData($data['title'] ?? '', $data['year'] ?? '', getTmdbApiKey($pdo), $pdo);
            if ($tmdbData) {
                if (empty($data['director'])) $data['director'] = $tmdbData['director'];
                if (empty($data['poster'])) $data['poster'] = $tmdbData['poster'];
                if (empty($data['streaming']) && $type === 'critique') {
                    $data['streaming'] = !empty($tmdbData['streaming']) ? $tmdbData['streaming'] : 'Disponible en support physique ou Cinéma';
                }
            } elseif (empty($data['streaming']) && $type === 'critique') {
                $data['streaming'] = 'Disponible en support physique ou Cinéma';
            }
        }
        
        if ($type === 'critique') {
            $sql = "INSERT INTO critiques (id, title, year, director, poster, rating, review, streaming) VALUES (?, ?, ?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE title=VALUES(title), year=VALUES(year), director=VALUES(director), poster=VALUES(poster), rating=VALUES(rating), review=VALUES(review), streaming=VALUES(streaming)";
            $stmt = $pdo->prepare($sql);
            $stmt->execute([$id, $data['title'] ?? '', $data['year'] ?? '', $data['director'] ?? '', $data['poster'] ?? '', $data['rating'] ?? 3.0, $data['review'] ?? '', $data['streaming'] ?? '']);
        } else {
            $sql = "INSERT INTO videotheque (id, title, year, director, poster, format, length, publisher, ean_isbn13, number_of_discs, aspect_ratio, description) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE title=VALUES(title), year=VALUES(year), director=VALUES(director), poster=VALUES(poster), format=VALUES(format), length=VALUES(length), publisher=VALUES(publisher), ean_isbn13=VALUES(ean_isbn13), number_of_discs=VALUES(number_of_discs), aspect_ratio=VALUES(aspect_ratio), description=VALUES(description)";
            $stmt = $pdo->prepare($sql);
            $stmt->execute([$id, $data['title'] ?? '', $data['year'] ?? '', $data['director'] ?? '', $data['poster'] ?? '', $data['format'] ?? '', $data['length'] ?? '', $data['publisher'] ?? '', $data['ean_isbn13'] ?? '', $data['number_of_discs'] ?? 1, $data['aspect_ratio'] ?? '', $data['description'] ?? '']);
        }
        echo json_encode(["success" => true]);
        break;
        
    case 'delete_film':
        checkAuth($pdo);
        $type = $_GET['type'] ?? 'critique'; $table = ($type === 'videotheque') ? 'videotheque' : 'critiques';
        $id = $_GET['id'] ?? null;
        if (!$id) { http_response_code(400); echo json_encode(["error" => "ID manquant."]); break; }
        $stmt = $pdo->prepare("DELETE FROM $table WHERE id = ?"); $stmt->execute([$id]);
        echo json_encode(["success" => true]);
        break;
        
    case 'bulk_delete':
        checkAuth($pdo);
        $ids = $data['ids'] ?? []; $type = $data['type'] ?? 'critique'; $table = ($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]); } 
        else { http_response_code(400); echo json_encode(["success" => false, "error" => "Aucun élément sélectionné."]); }
        break;

    // ──  IMPORT PAR LOTS OPTIMISÉ ──
    case 'import_batch':
        checkAuth($pdo);
        $items = $data['items'] ?? [];
        $type = $data['type'] ?? 'videotheque';
        $tmdbApiKey = getTmdbApiKey($pdo);
        $imported = 0;
        $stats = ['tmdb_calls' => 0, 'cache_hits' => 0, 'ean_hits' => 0];

        // 🚀 Transaction SQL pour accélérer les INSERT (×5 plus rapide)
        $pdo->beginTransaction();
        
        foreach ($items as $rowData) {
            $title = $rowData['title'] ?? $rowData['Name'] ?? 'Sans titre';
            $firstName = $rowData['first_name'] ?? '';
            $lastName = $rowData['last_name'] ?? '';
            $director = (!empty($firstName) && !empty($lastName)) ? trim("$firstName $lastName") : ($rowData['creators'] ?? $rowData['Director'] ?? '');
            
            $publishDate = $rowData['publish_date'] ?? $rowData['Year'] ?? '';
            $year = extractYear($publishDate);
            
            $ean = $rowData['ean_isbn13'] ?? $rowData['EAN'] ?? '';
            $description = $rowData['description'] ?? $rowData['Description'] ?? $rowData['Review'] ?? '';
            $publisher = $rowData['publisher'] ?? $rowData['Publisher'] ?? '';
            $length = $rowData['length'] ?? $rowData['Length'] ?? '';
            $discs = $rowData['number_of_discs'] ?? 1;
            $aspect = $rowData['aspect_ratio'] ?? '';
            $format = $rowData['format'] ?? $rowData['Format'] ?? detectFormat($title);

            // 🚀 Récupération image : priorité EAN (jaquette physique)
            $poster = $rowData['poster'] ?? $rowData['Poster'] ?? '';
            if (empty($poster) && !empty($ean)) {
                $poster = fetchImageByEAN($ean);
                if ($poster) $stats['ean_hits']++;
            }
            
            // 🚀 TMDB uniquement si données manquantes (et utilisation du cache)
            $needTmdb = empty($poster) || empty($director);
            $tmdbData = null;
            if ($needTmdb && $tmdbApiKey) {
                $tmdbData = fetchTmdbData($title, $year, $tmdbApiKey, $pdo);
                $stats['tmdb_calls']++;
                if ($tmdbData) {
                    if (empty($director)) $director = $tmdbData['director'];
                    if (empty($poster) && !empty($tmdbData['poster'])) $poster = $tmdbData['poster'];
                }
            }

            $id = makeStableId($title, $year);

            if ($type === 'critique') {
                $rating = isset($rowData['rating']) && $rowData['rating'] !== '' ? (float)$rowData['rating'] : (isset($rowData['Rating']) ? (float)$rowData['Rating'] : 3.0);
                $review = $rowData['review'] ?? $rowData['Review'] ?? $description;
                $streaming = $rowData['streaming'] ?? $rowData['Streaming'] ?? (!empty($tmdbData['streaming']) ? $tmdbData['streaming'] : 'Disponible en support physique ou Cinéma');
                
                $sql = "INSERT INTO critiques (id, title, year, director, poster, rating, review, streaming) VALUES (?, ?, ?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE rating=VALUES(rating), review=IF(VALUES(review)!='',VALUES(review),review), director=IF(VALUES(director)!='',VALUES(director),director), poster=IF(VALUES(poster)!='',VALUES(poster),poster), streaming=IF(VALUES(streaming)!='',VALUES(streaming),streaming)";
                $stmt = $pdo->prepare($sql);
                $stmt->execute([$id, $title, $year, $director, $poster, $rating, $review, $streaming]);
            } else {
                $sql = "INSERT INTO videotheque (id, title, year, director, poster, format, length, publisher, ean_isbn13, number_of_discs, aspect_ratio, description) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE director=IF(VALUES(director)!='',VALUES(director),director), poster=IF(VALUES(poster)!='',VALUES(poster),poster), format=IF(VALUES(format)!='',VALUES(format),format), length=IF(VALUES(length)!='',VALUES(length),length), publisher=IF(VALUES(publisher)!='',VALUES(publisher),publisher), ean_isbn13=IF(VALUES(ean_isbn13)!='',VALUES(ean_isbn13),ean_isbn13), number_of_discs=IF(VALUES(number_of_discs)!=1,VALUES(number_of_discs),number_of_discs), aspect_ratio=IF(VALUES(aspect_ratio)!='',VALUES(aspect_ratio),aspect_ratio), description=IF(VALUES(description)!='',VALUES(description),description)";
                $stmt = $pdo->prepare($sql);
                $stmt->execute([$id, $title, $year, $director, $poster, $format, $length, $publisher, $ean, $discs, $aspect, $description]);
            }
            $imported++;
        }
        
        $pdo->commit();
        echo json_encode(["success" => true, "imported" => $imported, "stats" => $stats]);
        break;
}