<?php

declare(strict_types=1);

use App\Http\Controllers\ArtworkDownloadController;
use App\Models\Artwork;
use App\Services\ArtworkStatsService;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\File;
use Symfony\Component\HttpFoundation\BinaryFileResponse;

beforeEach(function () {
    $root = storage_path('framework/testing/artwork-downloads-accel');
    config([
        'uploads.storage_root' => $root,
        'uploads.local_originals_root' => $root,
        'app.download_accel_enabled' => false,
        'app.download_accel_path' => '/internal/originals',
        'app.url' => 'https://skinbase.test',
    ]);

    if (File::exists($root)) {
        File::deleteDirectory($root);
    }

    File::makeDirectory($root, 0755, true);
});

afterEach(function () {
    $root = storage_path('framework/testing/artwork-downloads-accel');
    if (File::exists($root)) {
        File::deleteDirectory($root);
    }
});

function accelOriginal(string $hash, string $ext, string $content = 'original-bytes'): string
{
    $root = rtrim((string) config('uploads.local_originals_root'), DIRECTORY_SEPARATOR);
    $dir = $root.DIRECTORY_SEPARATOR.substr($hash, 0, 2).DIRECTORY_SEPARATOR.substr($hash, 2, 2);
    File::makeDirectory($dir, 0755, true, true);
    $path = $dir.DIRECTORY_SEPARATOR.$hash.'.'.$ext;
    File::put($path, $content);

    return $path;
}

function resolveAccelUri(string $filePath): ?string
{
    $controller = app(ArtworkDownloadController::class);
    $method = new ReflectionMethod(ArtworkDownloadController::class, 'resolveAccelUri');

    return $method->invoke($controller, $filePath);
}

it('uses the PHP download fallback when acceleration is disabled', function () {
    $hash = '2721722cb2f407cc53539ee8718cc89c4cdfc579';
    accelOriginal($hash, 'zip', 'zip-body');

    $artwork = Artwork::factory()->create([
        'file_name' => 'Nested Original',
        'hash' => $hash,
        'file_ext' => 'zip',
    ]);

    $response = $this->get('/download/artwork/'.$artwork->id);

    $response->assertOk();
    expect($response->headers->get('X-Accel-Redirect'))->toBeNull()
        ->and($response->baseResponse)->toBeInstanceOf(BinaryFileResponse::class);
});

it('returns X-Accel-Redirect for a nested original when acceleration is enabled', function () {
    config(['app.download_accel_enabled' => true]);
    $hash = '2721722cb2f407cc53539ee8718cc89c4cdfc579';
    accelOriginal($hash, 'zip', 'zip-body');

    $artwork = Artwork::factory()->create([
        'file_name' => 'Nested Original',
        'hash' => $hash,
        'file_ext' => 'zip',
    ]);

    $this->mock(ArtworkStatsService::class, function ($mock) use ($artwork): void {
        $mock->shouldReceive('incrementDownloads')->once()->with($artwork->id, 1, false);
    });

    $response = $this->get('/download/artwork/'.$artwork->id);

    $response->assertOk()
        ->assertHeader('X-Accel-Redirect', '/internal/originals/27/21/2721722cb2f407cc53539ee8718cc89c4cdfc579.zip')
        ->assertHeader('Content-Type', 'application/octet-stream')
        ->assertHeader('X-Content-Type-Options', 'nosniff');

    $disposition = (string) $response->headers->get('Content-Disposition');
    expect($disposition)->toContain('attachment')
        ->and($disposition)->toContain('Nested Original')
        ->and($disposition)->toContain('.zip')
        ->and($response->baseResponse)->not->toBeInstanceOf(BinaryFileResponse::class);

    expect(DB::table('artwork_downloads')->where('artwork_id', $artwork->id)->count())->toBe(1);
});

it('maps nested originals under the accel prefix without duplicate slashes', function () {
    config(['app.download_accel_enabled' => true]);
    $root = rtrim((string) config('uploads.local_originals_root'), DIRECTORY_SEPARATOR);
    $relative = '27'.DIRECTORY_SEPARATOR.'21'.DIRECTORY_SEPARATOR.'2721722cb2f407cc53539ee8718cc89c4cdfc579.zip';
    $path = $root.DIRECTORY_SEPARATOR.$relative;

    expect(resolveAccelUri($path))->toBe('/internal/originals/27/21/2721722cb2f407cc53539ee8718cc89c4cdfc579.zip');
});

it('does not emit an accel URI for a file outside the originals root', function () {
    config(['app.download_accel_enabled' => true]);
    $outside = sys_get_temp_dir().DIRECTORY_SEPARATOR.'not-original.zip';
    File::put($outside, 'nope');

    expect(resolveAccelUri($outside))->toBeNull();

    File::delete($outside);
});

it('returns 404 for an unsupported original extension', function () {
    $hash = 'aa11bb22cc33dd44ee55ff6677889900aabbccdd';
    accelOriginal($hash, 'exe', 'not-allowed');

    $artwork = Artwork::factory()->create([
        'hash' => $hash,
        'file_ext' => 'exe',
        'file_name' => 'bad.exe',
    ]);

    $this->mock(ArtworkStatsService::class, function ($mock): void {
        $mock->shouldReceive('incrementDownloads')->never();
    });

    $this->get('/download/artwork/'.$artwork->id)->assertNotFound();
    expect(DB::table('artwork_downloads')->where('artwork_id', $artwork->id)->count())->toBe(0);
});

it('still records download analytics when acceleration is enabled', function () {
    config(['app.download_accel_enabled' => true]);
    $hash = 'bb22cc33dd44ee55ff6677889900aabbccddeeff';
    accelOriginal($hash, 'jpg', 'jpeg-bytes');

    $artwork = Artwork::factory()->create([
        'hash' => $hash,
        'file_ext' => 'jpg',
        'file_name' => 'Photo',
    ]);

    DB::table('artwork_stats')->insertOrIgnore([
        'artwork_id' => $artwork->id,
        'views' => 0,
        'views_24h' => 0,
        'views_7d' => 0,
        'downloads' => 0,
        'downloads_24h' => 0,
        'downloads_7d' => 0,
        'favorites' => 0,
        'rating_avg' => 0,
        'rating_count' => 0,
    ]);

    $this->get('/download/artwork/'.$artwork->id)
        ->assertOk()
        ->assertHeader('X-Accel-Redirect');

    expect(DB::table('artwork_downloads')->where('artwork_id', $artwork->id)->count())->toBe(1)
        ->and((int) DB::table('artwork_stats')->where('artwork_id', $artwork->id)->value('downloads'))->toBe(1);
});