<?php

/**
 * Master Database Setup & Initialization Script
 * Runs user generation and SQL schema import automatically on Docker Compose initialization.
 */

echo "========================================\n";
echo "  WKVS Database Automated Initializer   \n";
echo "========================================\n\n";

$setupDir = __DIR__;
$baseDir  = dirname(__DIR__, 2);

// 1. Run User Generation & Grant setup
echo "[1/3] Erstelle/Synchronisiere Datenbank-Benutzer...\n";
require_once $setupDir . '/generate-users.php';

$userResult = sync_and_create_db_users();

if (!$userResult['success']) {
    echo "❌ Fehler bei Benutzererstellung: " . $userResult['message'] . "\n";
    exit(1);
}

echo "✓ " . $userResult['message'] . "\n\n";

// 2. Generate SQL structure file with table prefix
echo "[2/3] Generiere SQL-Struktur & Tabellen-Prefix...\n";
require $setupDir . '/generate-sql.php';

echo "\n[3/3] Importiere Tabellen-Struktur in die Datenbank...\n";

$generatedSqlFile = $setupDir . '/sql-database.sql';

if (!file_exists($generatedSqlFile)) {
    echo "❌ Fehler: '$generatedSqlFile' wurde nicht gefunden.\n";
    exit(1);
}

// Connect to MariaDB to import SQL schema
$dbEnvFile = $baseDir . '/config/.env.db';
$dbEnv = parse_env_file_simple($dbEnvFile);

$rootPass = $dbEnv['MYSQL_ROOT_PASSWORD'] ?? '';
$dbName   = $dbEnv['MYSQL_DATABASE'] ?? 'devdb_';
$dbHost   = getenv('DB_HOST') ?: ($dbEnv['DB_HOST'] ?? 'mariadb');
$dbPort   = (int)($dbEnv['DB_PORT'] ?? 3306);

$mysqli = null;
foreach ([$dbHost, 'mariadb', '127.0.0.1', 'localhost'] as $tryHost) {
    try {
        $conn = @new mysqli($tryHost, 'root', $rootPass, $dbName, $dbPort);
        if (!$conn->connect_error) {
            $mysqli = $conn;
            break;
        }
    } catch (Throwable $e) {
        continue;
    }
}

if (!$mysqli) {
    echo "❌ Fehler: Konnte keine Verbindung als 'root' zu MariaDB herstellen.\n";
    exit(1);
}

$sqlContent = file_get_contents($generatedSqlFile);

if ($mysqli->multi_query($sqlContent)) {
    do {
        if ($res = $mysqli->store_result()) {
            $res->free();
        }
    } while ($mysqli->more_results() && $mysqli->next_result());

    if ($mysqli->errno) {
        echo "❌ SQL Import-Fehler: " . $mysqli->error . "\n";
        exit(1);
    }
    echo "✓ Datenbank-Struktur erfolgreich importiert!\n\n";
} else {
    echo "❌ SQL Import-Fehler: " . $mysqli->error . "\n";
    exit(1);
}

$mysqli->close();

echo "========================================\n";
echo "✅ Datenbank-Initialisierung abgeschlossen!\n";
echo "========================================\n";