<?php
header('Content-Type: application/json');
ini_set('display_errors', '0');

$q = mb_strtolower(trim($_GET['q'] ?? ''));
$id = isset($_GET['id']) ? intval($_GET['id']) : null;
$limit = max(1, min(50, intval($_GET['limit'] ?? 20)));
$macro = trim($_GET['macro'] ?? '');

$cacheFile = __DIR__ . '/cache/matrici.json';

if (!file_exists($cacheFile)) {
    // Trigger cache creation
    require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
    require_once __DIR__ . '/class/VisualLimsApiClient.class.php';
    $api = VisualLimsApiClient::getInstance();
    $data = $api->get('Matrice');
    $matrici = [];
    foreach (($data['value'] ?? []) as $item) {
        $nome = $item['NomeMatrice'] ?? '';
        if ($nome !== '' && substr($nome, 0, 1) !== '*') {
            $matrici[] = ['IdMatrice' => $item['IdMatrice'], 'NomeMatrice' => $nome, 'MacroMatrice' => $item['MacroMatrice'] ?? null];
        }
    }
    usort($matrici, fn($a, $b) => strcasecmp($a['NomeMatrice'], $b['NomeMatrice']));
    if (!is_dir(__DIR__ . '/cache')) mkdir(__DIR__ . '/cache', 0777, true);
    file_put_contents($cacheFile, json_encode(['success' => true, 'value' => $matrici]));
} else {
    $cached = json_decode(file_get_contents($cacheFile), true);
    $matrici = $cached['value'] ?? [];
}

// Lookup by ID
if ($id !== null) {
    foreach ($matrici as $m) {
        if ((int)$m['IdMatrice'] === $id) {
            echo json_encode(['results' => [['id' => $m['IdMatrice'], 'text' => $m['NomeMatrice']]]]);
            exit;
        }
    }
    echo json_encode(['results' => []]);
    exit;
}

// Search (with optional MacroMatrice filter)
$results = [];
foreach ($matrici as $m) {
    $nome = $m['NomeMatrice'] ?? '';
    if ($macro !== '' && ($m['MacroMatrice'] ?? '') !== $macro) continue;
    if ($q === '' || mb_strpos(mb_strtolower($nome), $q) !== false) {
        $results[] = ['id' => $m['IdMatrice'], 'text' => $nome];
        if (count($results) >= $limit) break;
    }
}

echo json_encode(['results' => $results]);