<?php

declare(strict_types=1);

namespace Eyrie\Tests;

use Eyrie\Engine;
use Eyrie\Loader\FileLoader;
use PHPUnit\Framework\TestCase;

class HelperTest extends TestCase
{
    private string $tempDir;
    private string $cacheDir;

    protected function setUp(): void
    {
        $this->tempDir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'eyrie_helper_tests_' . uniqid();
        mkdir($this->tempDir);
        $this->cacheDir = $this->tempDir . DIRECTORY_SEPARATOR . 'cache';
        mkdir($this->cacheDir);
    }

    protected function tearDown(): void
    {
        $this->removeDirectory($this->tempDir);
    }

    public function testHelperCall(): void
    {
        file_put_contents($this->tempDir . '/helper.eyrie.php', '<< greet("Junie") >>');
        $loader = new FileLoader([$this->tempDir]);
        $engine = new Engine($loader, ['cache' => $this->cacheDir, 'debug' => true]);

        $engine->addHelper('greet', function(string $name) {
            return "Hello, $name!";
        });

        $result = $engine->render('helper');
        $this->assertEquals('Hello, Junie!', $result);
    }

    private function removeDirectory(string $dir): void
    {
        if (!is_dir($dir)) {
            return;
        }

        $files = array_diff(scandir($dir), ['.', '..']);
        foreach ($files as $file) {
            (is_dir("$dir/$file")) ? $this->removeDirectory("$dir/$file") : unlink("$dir/$file");
        }
        rmdir($dir);
    }
}