<?php

declare(strict_types=1);

error_reporting(E_ALL);
ini_set('display_errors', '1');
header('Content-Type: application/json; charset=utf-8');

try {
    $config = require __DIR__ . '/../config/config.php';
    $dbCfg = $config['db'];

    $dsn = sprintf('mysql:host=%s;dbname=%s;charset=%s', $dbCfg['host'], $dbCfg['dbname'], $dbCfg['charset']);
    $pdo = new PDO($dsn, $dbCfg['username'], $dbCfg['password'], [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    ]);

    $sqlFile = __DIR__ . '/../sql/schema.sql';
    if (!file_exists($sqlFile)) {
        echo json_encode(['status' => 'error', 'message' => 'schema.sql file not found']);
        exit;
    }

    $rawSql = file_get_contents($sqlFile);

    // Remove comments
    $lines = explode("\n", $rawSql);
    $cleanLines = [];
    foreach ($lines as $line) {
        $trimmed = trim($line);
        if (str_starts_with($trimmed, '--') || str_starts_with($trimmed, '#')) {
            continue;
        }
        $cleanLines[] = $line;
    }
    $cleanSql = implode("\n", $cleanLines);

    // Split queries by semicolon
    $queries = array_filter(array_map('trim', explode(';', $cleanSql)));

    $executed = 0;
    foreach ($queries as $q) {
        if (!empty($q)) {
            $pdo->exec($q);
            $executed++;
        }
    }

    // Create / update Admin user: admin / Admin1337!
    $adminUsername = 'admin';
    $adminPassword = 'Admin1337!';
    $passwordHash = password_hash($adminPassword, PASSWORD_ARGON2ID);

    $stmt = $pdo->prepare('
        INSERT INTO dc_users (username, password_hash, created_at)
        VALUES (:u, :p, NOW())
        ON DUPLICATE KEY UPDATE password_hash = VALUES(password_hash)
    ');
    $stmt->execute([':u' => $adminUsername, ':p' => $passwordHash]);

    // Seed default endpoints setting in dc_settings
    $endpoints = json_encode([
        'validate' => '/api/license/v1/validate',
        'deactivate' => '/api/license/v1/deactivate',
    ]);
    $stmtSet = $pdo->prepare('INSERT INTO dc_settings (skey, svalue) VALUES ("endpoints", :v) ON DUPLICATE KEY UPDATE svalue = VALUES(svalue)');
    $stmtSet->execute([':v' => $endpoints]);

    // Query created tables to verify
    $tables = $pdo->query('SHOW TABLES')->fetchAll(PDO::FETCH_COLUMN);

    echo json_encode([
        'status' => 'success',
        'message' => "Successfully executed {$executed} SQL statements!",
        'created_user' => 'admin',
        'tables_in_db' => $tables,
        'timestamp' => date('Y-m-d H:i:s')
    ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);

} catch (Throwable $t) {
    http_response_code(500);
    echo json_encode([
        'status' => 'error',
        'message' => $t->getMessage(),
        'file' => $t->getFile(),
        'line' => $t->getLine()
    ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
}