<?php

namespace Tests\Unit;

use App\Services\Ocr\PhotoOcrPreparer;
use Illuminate\Support\Facades\Process;
use PHPUnit\Framework\Attributes\Test;
use Tests\TestCase;

class PhotoOcrPreparerTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        $bins = new \ReflectionProperty(PhotoOcrPreparer::class, 'bins');
        $bins->setValue(null, []);
    }

    #[Test]
    public function resize_prefers_imagemagick_over_gd(): void
    {
        $path = $this->jpeg(1800, 1200);
        Process::fake(function () {
            return Process::result();
        });

        $this->invokeResize($path, 1280);

        Process::assertRan(function ($process) {
            $cmd = $process->command;
            $bin = is_array($cmd) ? (string) ($cmd[0] ?? '') : (string) $cmd;

            return is_array($cmd)
                && in_array('-resize', $cmd, true)
                && (str_contains($bin, 'magick') || str_contains($bin, 'convert'));
        });
        @unlink($path);
    }

    #[Test]
    public function gd_skips_when_truecolor_would_exceed_memory(): void
    {
        $prev = ini_get('memory_limit');
        ini_set('memory_limit', '128M');
        try {
            $fits = new \ReflectionMethod(PhotoOcrPreparer::class, 'gdFitsMemory');
            $ok = $fits->invoke(app(PhotoOcrPreparer::class), 20000, 20000);
            $this->assertFalse($ok);
        } finally {
            ini_set('memory_limit', (string) $prev);
        }
    }

    private function invokeResize(string $path, int $max): void
    {
        config(['coruna.ocr.max_edge' => $max]);
        $resize = new \ReflectionMethod(PhotoOcrPreparer::class, 'resize');
        $resize->invoke(app(PhotoOcrPreparer::class), $path);
    }

    private function jpeg(int $width, int $height): string
    {
        $path = tempnam(sys_get_temp_dir(), 'ocrprep_').'.jpg';
        $im = imagecreatetruecolor($width, $height);
        imagejpeg($im, $path, 80);
        imagedestroy($im);

        return $path;
    }
}