<?php

declare(strict_types=1);

namespace App\Tests\Unit\Service;

use App\Service\ProviderErrorCode;
use App\Service\ProviderHealthChecker;
use App\Service\ProviderInterface;
use App\Service\ProviderStatus;
use App\Service\ProviderStatusType;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\Attributes\Test;
use PHPUnit\Framework\TestCase;

#[CoversClass(ProviderHealthChecker::class)]
final class ProviderHealthCheckerTest extends TestCase
{
    #[Test]
    public function it_returns_ok_when_all_providers_are_healthy(): void
    {
        $provider = $this->createStub(ProviderInterface::class);
        $provider->method('probe')->willReturn(new ProviderStatus('test', ProviderStatusType::Ok));

        $result = (new ProviderHealthChecker([$provider]))->check();

        $this->assertSame('ok', $result['status']);
    }

    #[Test]
    public function it_returns_degraded_when_a_provider_has_an_error(): void
    {
        $provider = $this->createStub(ProviderInterface::class);
        $provider->method('probe')->willReturn(
            new ProviderStatus('test', ProviderStatusType::Error, ProviderErrorCode::AuthFailed, 'Invalid token'),
        );

        $result = (new ProviderHealthChecker([$provider]))->check();

        $this->assertSame('degraded', $result['status']);
    }

    #[Test]
    public function it_does_not_degrade_when_a_provider_is_not_configured(): void
    {
        $provider = $this->createStub(ProviderInterface::class);
        $provider->method('probe')->willReturn(new ProviderStatus('test', ProviderStatusType::NotConfigured));

        $result = (new ProviderHealthChecker([$provider]))->check();

        $this->assertSame('ok', $result['status']);
    }

    #[Test]
    public function it_indexes_provider_statuses_by_name(): void
    {
        $provider = $this->createStub(ProviderInterface::class);
        $provider->method('probe')->willReturn(new ProviderStatus('github', ProviderStatusType::Ok));

        $result = (new ProviderHealthChecker([$provider]))->check();

        $this->assertArrayHasKey('github', $result['providers']);
    }

    #[Test]
    public function it_returns_ok_with_no_providers(): void
    {
        $result = (new ProviderHealthChecker([]))->check();

        $this->assertSame('ok', $result['status']);
        $this->assertSame([], $result['providers']);
    }

    #[Test]
    public function it_includes_all_provider_statuses_in_output(): void
    {
        $github = $this->createStub(ProviderInterface::class);
        $github->method('probe')->willReturn(new ProviderStatus('github', ProviderStatusType::Ok));

        $gitlab = $this->createStub(ProviderInterface::class);
        $gitlab->method('probe')->willReturn(new ProviderStatus('gitlab', ProviderStatusType::NotConfigured));

        $result = (new ProviderHealthChecker([$github, $gitlab]))->check();

        $this->assertArrayHasKey('github', $result['providers']);
        $this->assertArrayHasKey('gitlab', $result['providers']);
    }
}