<?php

namespace Tests;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Tester\CommandTester;

class TestCase extends \PHPUnit\Framework\TestCase
{
    /**
     * Reset the current working directory to the application directory.
     */
    protected function resetCurrentDirectory(): void
    {
        chdir(dirname(__DIR__));
    }

    protected function getTestDataDirectory(): string
    {
        return dirname(__DIR__) . DIRECTORY_SEPARATOR . 'test-data';
    }

    protected function getEmptyTestDir(): string
    {
        $dir = $this->getTestDataDirectory() . DIRECTORY_SEPARATOR . bin2hex(random_bytes(10));
        mkdir($dir);
        return $dir;
    }

    protected function deleteDirectory(string $dir): void
    {
        // For safety, only delete directories within our test data dir.
        if (!str_starts_with($dir, $this->getTestDataDirectory())) {
            return;
        }

        $files = array_diff(scandir($dir), ['.', '..']);

        foreach ($files as $file) {
            (is_dir("$dir/$file")) ? $this->deleteDirectory("$dir/$file") : unlink("$dir/$file");
        }

        rmdir($dir);
    }

    protected function getApp(): Application
    {
        return require dirname(__DIR__) . '/src/app.php';
    }

    protected function runCommand(string $command, array $args = [], array $inputs = [], array $env = []): CommandResult
    {
        $app = $this->getApp();
        $command = $app->find($command);

        $err = null;
        $commandTester = new CommandTester($command);

        if (!empty($inputs)) {
            $commandTester->setInputs($inputs);
        }

        foreach ($env as $name => $value) {
            $_SERVER[$name] = $value;
        }

        try {
            $commandTester->execute($args);
        } catch (\Exception $exception) {
            $err = $exception;
        }

        foreach ($env as $name => $value) {
            unset($_SERVER[$name]);
        }

        return new CommandResult($commandTester, $err);
    }

    /**
     * Create a clone of a BookStack install folder, then pass that path
     * and run the given callback.
     * Destroys the folder afterwards.
     */
    protected function withOwnBookStackFolder(callable $callback)
    {
        $path = '/var/www/bookstack-' . md5(random_bytes(5));
        exec("cp -r /var/www/bookstack $path");
        chdir($path);
        $callback($path);
        exec("rm -rf $path");
    }
}