<?php

namespace Tests\Unit;

use App\Support\CheckedFile;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
use RuntimeException;

class CheckedFileTest extends TestCase
{
    public function test_empty_file_is_valid_content_with_a_real_hash_and_zero_size(): void
    {
        $path = tempnam(sys_get_temp_dir(), 'investmoz-file-');
        try {
            self::assertSame('', CheckedFile::read($path));
            self::assertSame(hash('sha256', ''), CheckedFile::sha256($path));
            self::assertSame(0, CheckedFile::size($path));
        } finally {
            unlink($path);
        }
    }

    public static function operations(): array
    {
        return [['read'], ['sha256'], ['size']];
    }

    public function test_integrity_check_reads_again_after_content_changes(): void
    {
        $path = tempnam(sys_get_temp_dir(), 'investmoz-integrity-');
        try {
            file_put_contents($path, 'original');
            $expected = CheckedFile::sha256($path);
            self::assertTrue(CheckedFile::matches($path, $expected));
            file_put_contents($path, 'changed');
            self::assertFalse(CheckedFile::matches($path, $expected));
        } finally {
            unlink($path);
        }
    }

    #[DataProvider('operations')]
    public function test_missing_file_cannot_be_converted_to_empty_content_or_a_false_hash(string $operation): void
    {
        $this->expectException(RuntimeException::class);
        CheckedFile::$operation(sys_get_temp_dir().'/investmoz-absent-'.bin2hex(random_bytes(12)));
    }
}