<?php

namespace Tests\Unit;

use App\Services\PhotoPreview;
use Illuminate\Support\Facades\Process;
use Illuminate\Support\Facades\Storage;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class PhotoPreviewTest extends TestCase
{
    #[Test]
    public function basedir_probe_does_not_realpath_system_bins(): void
    {
        $preview = new PhotoPreview;
        $ref = new \ReflectionMethod(PhotoPreview::class, 'isPathInsideOpenBasedir');
        $this->assertFalse($ref->invoke($preview, '/usr/bin/heif-convert')
            && (string) ini_get('open_basedir') !== ''
            && ! str_contains((string) ini_get('open_basedir'), '/usr/bin'));
        $resolved = (new \ReflectionMethod(PhotoPreview::class, 'resolveBinary'))->invoke($preview, 'heif-convert');
        $this->assertNotNull($resolved);
    }

    #[Test]
    public function detects_heic_ftyp_header(): void
    {
        $preview = new PhotoPreview;
        $heicHead = "\x00\x00\x00\x28ftypheic\x00\x00\x00\x00mif1";
        $this->assertTrue($preview->headLooksHeic($heicHead));
        $this->assertFalse($preview->headLooksHeic("\xFF\xD8\xFF\xD9"));
        $this->assertFalse($preview->headLooksHeic(''));
    }

    #[Test]
    public function heic_convert_process_throw_does_not_bubble(): void
    {
        Storage::fake('local');
        Process::fake(function () {
            throw new \RuntimeException('proc_open is disabled');
        });
        $abs = sys_get_temp_dir().'/preview_'.uniqid().'.heic';
        file_put_contents($abs, "\x00\x00\x00\x18ftypheic\x00\x00\x00\x00mif1");
        $out = (new PhotoPreview)->payload($abs, 'dev-prev', hash('sha256', 'throw'));
        $this->assertFalse($out['converted']);
        $this->assertNotSame('', $out['bytes']);
        @unlink($abs);
    }

    #[Test]
    public function heic_without_throwing_when_system_bins_are_outside_basedir(): void
    {
        Storage::fake('local');
        $abs = sys_get_temp_dir().'/preview_'.uniqid().'.heic';
        file_put_contents($abs, "\x00\x00\x00\x18ftypheic\x00\x00\x00\x00mif1");
        $out = (new PhotoPreview)->payload($abs, 'dev-prev', hash('sha256', 'heic-head'));
        $this->assertFalse($out['converted']);
        $this->assertNotSame('', $out['bytes']);
        @unlink($abs);
    }

    #[Test]
    public function jpeg_passthrough_does_not_convert(): void
    {
        Storage::fake('local');
        $abs = $this->writeJpeg();
        $out = (new PhotoPreview)->payload($abs, 'dev-prev', hash('sha256', 'jpeg'));
        $this->assertFalse($out['converted']);
        $this->assertSame('image/jpeg', $out['mime']);
        $this->assertSame(file_get_contents($abs), $out['bytes']);
        @unlink($abs);
    }

    #[Test]
    public function heic_converts_to_jpeg_and_leaves_original(): void
    {
        if (! is_executable('/usr/bin/sips')) {
            $this->markTestSkipped('sips is required to generate and convert HEIC');
        }
        Storage::fake('local');
        $heic = $this->writeHeic();
        $original = file_get_contents($heic);
        $this->assertNotFalse($original);
        $sha = hash('sha256', $original);

        $out = (new PhotoPreview)->payload($heic, 'dev-prev', $sha);
        $this->assertTrue($out['converted']);
        $this->assertSame('image/jpeg', $out['mime']);
        $this->assertSame("\xFF\xD8", substr($out['bytes'], 0, 2));
        $this->assertSame($original, file_get_contents($heic));
        Storage::disk('local')->assertExists('c2/photo-previews/dev-prev/'.$sha.'.jpg');

        @unlink($heic);
    }

    private function writeJpeg(): string
    {
        $path = sys_get_temp_dir().'/preview_'.uniqid().'.jpg';
        $im = imagecreatetruecolor(8, 8);
        imagefilledrectangle($im, 0, 0, 7, 7, imagecolorallocate($im, 255, 255, 255));
        imagejpeg($im, $path, 90);

        return $path;
    }

    private function writeHeic(): string
    {
        $jpg = $this->writeJpeg();
        $heic = sys_get_temp_dir().'/preview_'.uniqid().'.heic';
        $result = Process::timeout(20)->run(['/usr/bin/sips', '-s', 'format', 'heic', '--out', $heic, $jpg]);
        @unlink($jpg);
        if (! $result->successful() || ! is_file($heic)) {
            $this->markTestSkipped('sips could not write a HEIC fixture');
        }

        return $heic;
    }
}