<?php

declare(strict_types=1);

namespace Tests;

use PDO;
use PHPUnit\Framework\TestCase;
use Psr\Http\Message\ResponseInterface;
use Slim\App;
use Slim\Psr7\Factory\ServerRequestFactory;

/**
 * Boots the real Slim app against a throwaway SQLite database with all
 * migrations applied.
 */
abstract class ApiTestCase extends TestCase
{
    protected App $app;
    private string $databasePath;

    protected function setUp(): void
    {
        $this->databasePath = sys_get_temp_dir() . '/todo-test-' . uniqid() . '.sqlite';
        putenv('DATABASE_PATH=' . $this->databasePath);
        $_ENV['DATABASE_PATH'] = $this->databasePath;

        $pdo = new PDO('sqlite:' . $this->databasePath);
        $pdo->exec('PRAGMA foreign_keys = ON');
        foreach (glob(dirname(__DIR__) . '/migrations/*.sql') ?: [] as $migration) {
            $pdo->exec((string) file_get_contents($migration));
        }

        $this->app = require dirname(__DIR__) . '/src/bootstrap.php';
    }

    protected function tearDown(): void
    {
        @unlink($this->databasePath);
        putenv('DATABASE_PATH');
        unset($_ENV['DATABASE_PATH']);
    }

    /**
     * @param array<string, mixed>|null $body
     * @param array<string, string> $headers
     */
    protected function request(
        string $method,
        string $path,
        ?array $body = null,
        array $headers = [],
    ): ResponseInterface {
        $request = (new ServerRequestFactory())->createServerRequest($method, $path);

        foreach ($headers as $name => $value) {
            $request = $request->withHeader($name, $value);
        }

        if ($body !== null) {
            $request = $request->withParsedBody($body)->withHeader('Content-Type', 'application/json');
        }

        return $this->app->handle($request);
    }

    /**
     * Register a fresh user and return an `Authorization` header for them.
     *
     * @return array<string, string>
     */
    protected function authHeader(string $email = 'user@example.com'): array
    {
        $token = $this->decode(
            $this->request('POST', '/api/auth/register', ['email' => $email, 'password' => 'password123']),
        )['token'];

        return ['Authorization' => 'Bearer ' . $token];
    }

    /**
     * @return array<string, mixed>
     */
    protected function decode(ResponseInterface $response): array
    {
        return (array) json_decode((string) $response->getBody(), true, 512, JSON_THROW_ON_ERROR);
    }
}