<?php
header('Content-Type:application/json; charset=utf-8');
ini_set('display_errors', 0);
error_reporting(0);
try {
    require __DIR__ . '/../config.php';
    $draw = intval($_GET['draw'] ?? 0);
    $start = intval($_GET['start'] ?? 0);
    $len = intval($_GET['length'] ?? 10);
    $s = trim($_GET['search']['value'] ?? '');

    $where = '';
    $params = [];
    if ($s) {
        $where = "WHERE name LIKE :s";
        $params[':s'] = "%$s%";
    }

    $total = $pdo->query("SELECT COUNT(*) FROM models")->fetchColumn();

    $filtered = $total;
    if ($where) {
        $stmt = $pdo->prepare("SELECT COUNT(*) FROM models $where");
        $stmt->execute($params);
        $filtered = $stmt->fetchColumn();
    }

    $sql = "SELECT id, name, version, model_size, layers FROM models $where ORDER BY id DESC LIMIT :start, :len";
    $stmt = $pdo->prepare($sql);
    foreach ($params as $k => $v) {
        $stmt->bindValue($k, $v);
    }
    $stmt->bindValue(':start', $start, PDO::PARAM_INT);
    $stmt->bindValue(':len', $len, PDO::PARAM_INT);
    $stmt->execute();
    $data = $stmt->fetchAll(PDO::FETCH_ASSOC);

    echo json_encode([
        'draw' => $draw,
        'recordsTotal' => $total,
        'recordsFiltered' => $filtered,
        'data' => $data
    ]);
} catch (Exception $e) {
    echo json_encode([
        'draw' => 0,
        'recordsTotal' => 0,
        'recordsFiltered' => 0,
        'data' => [],
        'error' => $e->getMessage()
    ]);
}