<?php

namespace Tests\Unit;

use App\Services\IceCandidate\Providers\MeteredIceCandidateProvider;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;
use RuntimeException;
use Tests\TestCase;

class MeteredIceCandidateProviderTest extends TestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        Cache::flush();
    }

    public function test_fetches_and_parses_metered_ice_servers_successfully(): void
    {
        $mockUrl = 'https://mock.metered.live/api/v1/turn/credentials';
        $apiKey = 'test-metered-key';

        Http::fake([
            $mockUrl.'*' => Http::response([
                [
                    'urls' => 'stun:stun.relay.metered.ca:80',
                ],
                [
                    'urls' => 'turn:standard.relay.metered.ca:80',
                    'username' => 'metered_usr',
                    'credential' => 'metered_pwd',
                ],
            ], 200),
        ]);

        $provider = new MeteredIceCandidateProvider([
            'url' => $mockUrl,
            'key' => $apiKey,
            'timeout' => 3,
            'cache_ttl' => 60,
        ]);

        $candidates = $provider->getIceCandidates();

        $this->assertCount(2, $candidates);
        $array = $candidates->toArray();
        $this->assertEquals('stun:stun.relay.metered.ca:80', $array[0]['urls']);
        $this->assertEquals('metered_usr', $array[1]['username']);
        $this->assertEquals('metered_pwd', $array[1]['credential']);

        // Verify result is cached (subsequent call does not hit HTTP)
        Http::fake([
            $mockUrl.'*' => Http::response([], 500),
        ]);

        $cachedCandidates = $provider->getIceCandidates();
        $this->assertCount(2, $cachedCandidates);
    }

    public function test_throws_exception_on_metered_http_error(): void
    {
        $mockUrl = 'https://mock.metered.live/api/v1/turn/credentials';

        Http::fake([
            $mockUrl.'*' => Http::response('Server Error', 500),
        ]);

        $provider = new MeteredIceCandidateProvider([
            'url' => $mockUrl,
            'key' => 'key',
        ]);

        $this->expectException(RuntimeException::class);
        $this->expectExceptionMessage('Metered API Error: 500');

        $provider->getIceCandidates();
    }
}