<?php
/**
 * 首次部署：创建数据表（读取 .env 中的数据库配置）
 * 用法：php scripts/init_tables.php
 */
declare(strict_types=1);

$root = dirname(__DIR__);
$envFile = $root . '/.env';
if (!is_readable($envFile)) {
    fwrite(STDERR, "Missing .env\n");
    exit(1);
}

$env = [];
foreach (file($envFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) ?: [] as $line) {
    if (str_starts_with(trim($line), '#')) {
        continue;
    }
    if (!str_contains($line, '=')) {
        continue;
    }
    [$k, $v] = explode('=', $line, 2);
    $env[trim($k)] = trim($v);
}

$host = $env['DB_HOST'] ?? '127.0.0.1';
$port = $env['DB_PORT'] ?? '3306';
$name = $env['DB_NAME'] ?? '';
$user = $env['DB_USER'] ?? '';
$pass = $env['DB_PASS'] ?? '';

$sqlFile = $root . '/database/install.sql';
$sql = file_get_contents($sqlFile);
if ($sql === false) {
    fwrite(STDERR, "Cannot read install.sql\n");
    exit(1);
}

$dsn = sprintf('mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4', $host, $port, $name);
$pdo = new PDO($dsn, $user, $pass, [
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
]);

// 按语句拆分（install.sql 无分号字面量）
$parts = array_filter(
    array_map('trim', preg_split('/;\s*\n/', $sql) ?: [])
);
foreach ($parts as $stmt) {
    if ($stmt === '' || str_starts_with($stmt, '--')) {
        continue;
    }
    $pdo->exec($stmt);
}

echo "OK: tables created in {$name}\n";