<?php
require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
require_once __DIR__ . '/class/db-functions.php';
include dirname(__DIR__) . '/../extra/auth.php';
if (!Auth::check()) { http_response_code(401); echo json_encode(['error' => 'Unauthorized']); exit; }

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

try {
    // Read from matrici cache (populated by get_matrici.php / warm_cache.php)
    $cacheFile = __DIR__ . '/cache/matrici.json';
    if (file_exists($cacheFile)) {
        $data = json_decode(file_get_contents($cacheFile), true);
        $matrici = $data['value'] ?? [];
    } else {
        // Fallback: trigger cache creation
        require_once __DIR__ . '/class/VisualLimsApiClient.class.php';
        $api = VisualLimsApiClient::getInstance();
        $apiData = $api->get('Matrice');
        $matrici = [];
        foreach (($apiData['value'] ?? []) as $item) {
            $nome = $item['NomeMatrice'] ?? '';
            if ($nome !== '' && substr($nome, 0, 1) !== '*') {
                $matrici[] = ['IdMatrice' => $item['IdMatrice'], 'NomeMatrice' => $nome, 'MacroMatrice' => $item['MacroMatrice'] ?? null];
            }
        }
        if (!is_dir(__DIR__ . '/cache')) mkdir(__DIR__ . '/cache', 0777, true);
        file_put_contents($cacheFile, json_encode(['success' => true, 'value' => $matrici]));
    }

    // Extract unique MacroMatrice values
    $macroValues = [];
    foreach ($matrici as $m) {
        $macro = $m['MacroMatrice'] ?? null;
        if ($macro !== null && $macro !== '' && substr($macro, 0, 1) !== '*') {
            $macroValues[$macro] = true;
        }
    }
    $macroMatrici = array_keys($macroValues);
    sort($macroMatrici);

    echo json_encode(['success' => true, 'value' => $macroMatrici]);
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['success' => false, 'message' => $e->getMessage()]);
}