<?php

declare(strict_types=1);

use App\Domain\Asset\Services\MetadataExtractor;

describe('MetadataExtractor', function () {
    beforeEach(function () {
        $this->extractor = new MetadataExtractor();
    });

    it('extracts image dimensions from valid image', function () {
        // Create a minimal valid JPEG (1x1 pixel)
        $imageContent = "\xFF\xD8\xFF\xE0\x00\x10JFIF\x00\x01\x01\x01\x00H\x00H\x00\x00\xFF\xD9";
        
        // Create a real 1x1 pixel image using GD
        $img = imagecreatetruecolor(100, 200);
        ob_start();
        imagejpeg($img);
        $imageContent = ob_get_clean();
        imagedestroy($img);

        $meta = $this->extractor->extractImageMetadata($imageContent);

        expect($meta->getWidth())->toBe(100);
        expect($meta->getHeight())->toBe(200);
    });

    it('returns empty metadata for invalid image content', function () {
        $meta = $this->extractor->extractImageMetadata('invalid-image-content');

        expect($meta->getWidth())->toBeNull();
        expect($meta->getHeight())->toBeNull();
    });

    it('extracts EXIF data when available', function () {
        // Create a minimal JPEG
        $img = imagecreatetruecolor(100, 100);
        ob_start();
        imagejpeg($img);
        $imageContent = ob_get_clean();
        imagedestroy($img);

        $meta = $this->extractor->extractImageMetadata($imageContent);

        // EXIF might not be available in test environment, but method should not throw
        expect($meta)->toBeInstanceOf(\App\Domain\Asset\ValueObjects\AssetMetadata::class);
    });

    it('returns empty metadata for video content', function () {
        $meta = $this->extractor->extractVideoMetadata('video-content');

        expect($meta->toArray())->toBe([]);
    });

    it('returns empty metadata for audio content', function () {
        $meta = $this->extractor->extractAudioMetadata('audio-content');

        expect($meta->toArray())->toBe([]);
    });

    it('returns null for blurhash generation', function () {
        $img = imagecreatetruecolor(100, 100);
        ob_start();
        imagejpeg($img);
        $imageContent = ob_get_clean();
        imagedestroy($img);

        $blurhash = $this->extractor->generateBlurhash($imageContent);

        expect($blurhash)->toBeNull();
    });

    it('returns null for dominant color extraction', function () {
        $img = imagecreatetruecolor(100, 100);
        ob_start();
        imagejpeg($img);
        $imageContent = ob_get_clean();
        imagedestroy($img);

        $color = $this->extractor->extractDominantColor($imageContent);

        expect($color)->toBeNull();
    });
});