<?php

declare(strict_types=1);

namespace BattleForge\Tests\Integration;

use BattleForge\Http\Request;
use BattleForge\Http\Handlers\GetAssets;
use PHPUnit\Framework\TestCase;

final class GetAssetsTest extends TestCase
{
    private string $placeholderDir;
    private string $uploadsDir;

    protected function setUp(): void
    {
        $this->placeholderDir = sys_get_temp_dir() . '/bf-placeholders-' . bin2hex(random_bytes(4));
        mkdir($this->placeholderDir, 0755, true);
        // 1x1 red PNG
        $png = base64_decode(
            'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4nGNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==',
            true,
        );
        file_put_contents($this->placeholderDir . '/defender.png', $png);

        $this->uploadsDir = sys_get_temp_dir() . '/bf-assets-' . bin2hex(random_bytes(4));
        mkdir($this->uploadsDir, 0700, true);
    }

    protected function tearDown(): void
    {
        if (is_dir($this->uploadsDir)) {
            foreach (glob($this->uploadsDir . '/*/*') as $file) {
                unlink($file);
            }
            foreach (glob($this->uploadsDir . '/*') as $dir) {
                rmdir($dir);
            }
            rmdir($this->uploadsDir);
        }

        if (is_dir($this->placeholderDir)) {
            foreach (glob($this->placeholderDir . '/*') as $file) {
                unlink($file);
            }
            rmdir($this->placeholderDir);
        }
    }

    public function testItServesAPlaceholderImageWithoutAuth(): void
    {
        $handler = new GetAssets($this->placeholderDir, $this->uploadsDir);
        $request = new Request([], [], [], [], [], '', 'GET', '/assets/placeholders/defender.png', null, '');
        $response = $handler->handle($request, ['kind' => 'placeholders', 'filename' => 'defender.png']);

        self::assertSame(200, $response->status);
        self::assertSame('image/png', $response->headers['Content-Type'] ?? '');
        self::assertGreaterThan(0, strlen($response->body));
    }

    public function testItReturns404ForAMissingFile(): void
    {
        $handler = new GetAssets($this->placeholderDir, $this->uploadsDir);
        $request = new Request([], [], [], [], [], '', 'GET', '/assets/placeholders/missing.png', null, '');
        $response = $handler->handle($request, ['kind' => 'placeholders', 'filename' => 'missing.png']);

        self::assertSame(404, $response->status);
    }

    public function testItServesAnUploadedAssetWhenTheServerTokenMatches(): void
    {
        $userToken = str_repeat('a', 64);
        $namespace = $this->uploadsDir . '/' . $userToken;
        mkdir($namespace, 0700, true);
        $payload = base64_decode(
            'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4nGNgYGBgAAAABQABh6FO1AAAAABJRU5ErkJggg==',
            true,
        );
        file_put_contents($namespace . '/demo.png', $payload);

        $handler = new GetAssets($this->placeholderDir, $this->uploadsDir);
        $request = new Request(
            [],
            [],
            [],
            [],
            ['__uploads_token' => $userToken],
            '',
            'GET',
            '/assets/uploads/' . $userToken . '/demo.png',
            null,
            '',
        );
        $response = $handler->handle(
            $request,
            ['kind' => 'uploads', 'userToken' => $userToken, 'filename' => 'demo.png'],
        );

        self::assertSame(200, $response->status);
        self::assertSame('image/png', $response->headers['Content-Type'] ?? '');
        self::assertSame($payload, $response->body);
    }

    public function testItRefusesAnUploadedAssetWhenTheServerTokenDiffers(): void
    {
        $handler = new GetAssets($this->placeholderDir, $this->uploadsDir);
        $request = new Request(
            [],
            [],
            [],
            [],
            ['__uploads_token' => str_repeat('a', 64)],
            '',
            'GET',
            '/assets/uploads/abc/def.png',
            null,
            '',
        );
        $response = $handler->handle(
            $request,
            ['kind' => 'uploads', 'userToken' => str_repeat('b', 64), 'filename' => 'def.png'],
        );

        self::assertSame(404, $response->status);
    }
}