<?php
require_once dirname(__DIR__, 2) . '/vendor/autoload.php'; // Risale a root/vendor/
use Dotenv\Dotenv;

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

// Debug: Log the path where we expect the .env file
$envPath = dirname(__DIR__, 2);
file_put_contents(__DIR__ . '/debug_log.txt', date('Y-m-d H:i:s') . ' - Expected .env path: ' . $envPath . PHP_EOL, FILE_APPEND);

// Carica il file .env dalla root del progetto
try {
    $dotenv = Dotenv::createImmutable($envPath);
    $dotenv->load();
} catch (Exception $e) {
    file_put_contents(__DIR__ . '/error_log.txt', date('Y-m-d H:i:s') . ' - Errore caricamento .env: ' . $e->getMessage() . PHP_EOL, FILE_APPEND);
    echo json_encode(['success' => false, 'message' => 'Errore caricamento configurazione: ' . $e->getMessage()]);
    exit(1);
}

// Recupera le variabili d'ambiente
$dbHost = $_ENV['DB_HOST'];
$dbName = $_ENV['DB_DATABASE'];
$dbUser = $_ENV['DB_USERNAME'];
$dbPass = $_ENV['DB_PASSWORD'];
$dbPrefix = $_ENV['DB_PREFIX'];

// Debug: Log database connection details (excluding password)
file_put_contents(__DIR__ . '/debug_log.txt', date('Y-m-d H:i:s') . " - DB Connection: host=$dbHost, dbname=$dbName, user=$dbUser, prefix=$dbPrefix" . PHP_EOL, FILE_APPEND);

// Connessione al database MySQL
try {
    $pdo = new PDO("mysql:host=$dbHost;dbname=$dbName;charset=utf8mb4", $dbUser, $dbPass);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
    file_put_contents(__DIR__ . '/error_log.txt', date('Y-m-d H:i:s') . ' - Errore connessione DB: ' . $e->getMessage() . PHP_EOL, FILE_APPEND);
    echo json_encode(['success' => false, 'message' => 'Errore connessione al database: ' . $e->getMessage()]);
    exit(1);
}

try {
    // Query per recuperare i valori distinti di MacroMatrice, escludendo quelli che iniziano con '*' e ordinandoli
    $query = "SELECT DISTINCT MacroMatrice FROM {$dbPrefix}matrici WHERE MacroMatrice IS NOT NULL AND MacroMatrice NOT LIKE '*%' ORDER BY MacroMatrice ASC";
    $stmt = $pdo->prepare($query);
    $stmt->execute();
    $macroMatrici = $stmt->fetchAll(PDO::FETCH_COLUMN);

    // Debug: Log del numero di MacroMatrice recuperate
    file_put_contents(__DIR__ . '/debug_log.txt', date('Y-m-d H:i:s') . ' - Retrieved ' . count($macroMatrici) . ' MacroMatrice from database' . PHP_EOL, FILE_APPEND);

    // Restituisci risposta JSON
    echo json_encode(['success' => true, 'value' => $macroMatrici]);
} catch (PDOException $e) {
    // Log errore e restituisci risposta di errore
    file_put_contents(__DIR__ . '/error_log.txt', date('Y-m-d H:i:s') . ' - Errore nel recupero delle MacroMatrice: ' . $e->getMessage() . PHP_EOL, FILE_APPEND);
    echo json_encode(['success' => false, 'message' => 'Errore nel recupero delle MacroMatrice: ' . $e->getMessage()]);
    exit(1);
}