<?php

declare(strict_types=1);

require_once __DIR__ . '/../../vendor/autoload.php';

use App\Domain\PreSave\PreSaveCampaign;
use App\Domain\PreSave\PreSaveCampaignRepositoryInterface;
use App\Domain\PreSave\PreSaveRegistration;
use App\Domain\PreSave\PreSaveRegistrationRepositoryInterface;
use App\Domain\PreSave\Services\PreSaveCampaignService;
use App\Domain\PreSave\ValueObjects\CampaignStatus;
use App\Domain\PreSave\ValueObjects\RegistrationStatus;
use App\Domain\PreSave\ValueObjects\StreamingPlatform;
use App\Domain\PreSave\ValueObjects\TrackUrl;
use App\Framework\Core\ValueObjects\Timestamp;
use App\Framework\OAuth\OAuthServiceInterface;

// In-Memory Campaign Repository
class InMemoryCampaignRepository implements PreSaveCampaignRepositoryInterface
{
    private array $campaigns = [];

    public function save(PreSaveCampaign $campaign): PreSaveCampaign
    {
        $id = $campaign->id ?? count($this->campaigns) + 1;
        $saved = new PreSaveCampaign(
            id: $id,
            status: $campaign->status,
            title: $campaign->title,
            artistName: $campaign->artistName,
            coverImageUrl: $campaign->coverImageUrl,
            releaseDate: $campaign->releaseDate,
            trackUrls: $campaign->trackUrls,
            description: $campaign->description,
            startDate: $campaign->startDate,
            createdAt: $campaign->createdAt,
            updatedAt: $campaign->updatedAt
        );
        $this->campaigns[$id] = $saved;
        return $saved;
    }

    public function findById(int $id): ?PreSaveCampaign
    {
        return $this->campaigns[$id] ?? null;
    }

    public function findAll(array $filters = []): array
    {
        return array_values($this->campaigns);
    }

    public function findReadyForRelease(): array
    {
        return [];
    }

    public function findReadyForProcessing(): array
    {
        return [];
    }

    public function delete(int $id): bool
    {
        unset($this->campaigns[$id]);
        return true;
    }

    public function getStatistics(int $campaignId): array
    {
        return [
            'total_registrations' => 10,
            'completed' => 5,
            'pending' => 3,
            'failed' => 2,
        ];
    }
}

// In-Memory Registration Repository
class InMemoryRegistrationRepository implements PreSaveRegistrationRepositoryInterface
{
    private array $registrations = [];

    public function save(PreSaveRegistration $registration): PreSaveRegistration
    {
        $id = $registration->id ?? count($this->registrations) + 1;
        $saved = new PreSaveRegistration(
            id: $id,
            campaignId: $registration->campaignId,
            userId: $registration->userId,
            platform: $registration->platform,
            status: $registration->status,
            registeredAt: $registration->registeredAt,
            processedAt: $registration->processedAt,
            errorMessage: $registration->errorMessage,
            retryCount: $registration->retryCount
        );
        $this->registrations[$id] = $saved;
        return $saved;
    }

    public function findForUserAndCampaign(string $userId, int $campaignId, StreamingPlatform $platform): ?PreSaveRegistration
    {
        foreach ($this->registrations as $reg) {
            if ($reg->userId === $userId && $reg->campaignId === $campaignId && $reg->platform === $platform) {
                return $reg;
            }
        }
        return null;
    }

    public function findByUserId(string $userId): array
    {
        return array_values(array_filter($this->registrations, fn($r) => $r->userId === $userId));
    }

    public function findPendingByCampaign(int $campaignId): array
    {
        return [];
    }

    public function findRetryable(int $campaignId, int $maxRetries): array
    {
        return [];
    }

    public function getStatusCounts(int $campaignId): array
    {
        return [
            'pending' => 3,
            'completed' => 5,
            'failed' => 2,
        ];
    }

    public function delete(int $id): bool
    {
        unset($this->registrations[$id]);
        return true;
    }

    public function hasRegistered(string $userId, int $campaignId, StreamingPlatform $platform): bool
    {
        return $this->findForUserAndCampaign($userId, $campaignId, $platform) !== null;
    }
}

// In-Memory OAuth Service
class InMemoryOAuthService implements OAuthServiceInterface
{
    private array $providers = [];

    public function addProvider(string $userId, string $provider): void
    {
        $this->providers[$userId . '_' . $provider] = true;
    }

    public function getProvider(string $name): \App\Framework\OAuth\OAuthProvider
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function getAuthorizationUrl(string $provider, array $options = []): string
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function handleCallback(string $userId, string $provider, string $code, ?string $state = null): \App\Framework\OAuth\Storage\StoredOAuthToken
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function getTokenForUser(string $userId, string $provider): \App\Framework\OAuth\Storage\StoredOAuthToken
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function refreshToken(\App\Framework\OAuth\Storage\StoredOAuthToken $storedToken): \App\Framework\OAuth\Storage\StoredOAuthToken
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function revokeToken(string $userId, string $provider): bool
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function getUserProfile(string $userId, string $provider): array
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function hasProvider(string $userId, string $provider): bool
    {
        return isset($this->providers[$userId . '_' . $provider]);
    }

    public function getUserProviders(string $userId): array
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function refreshExpiringTokens(int $withinSeconds = 300): int
    {
        throw new \RuntimeException('Not implemented in test');
    }

    public function cleanupExpiredTokens(): int
    {
        throw new \RuntimeException('Not implemented in test');
    }
}

// Test the service
echo "Testing PreSaveCampaignService...\n\n";

$campaignRepo = new InMemoryCampaignRepository();
$registrationRepo = new InMemoryRegistrationRepository();
$oauthService = new InMemoryOAuthService();

$service = new PreSaveCampaignService(
    $campaignRepo,
    $registrationRepo,
    $oauthService
);

// Test 1: Register user successfully
echo "Test 1: Register user for campaign\n";
$campaign = PreSaveCampaign::create(
    title: 'New Album',
    artistName: 'Test Artist',
    coverImageUrl: 'https://example.com/cover.jpg',
    releaseDate: Timestamp::fromDateTime(new DateTimeImmutable('+7 days')),
    trackUrls: [TrackUrl::create(StreamingPlatform::SPOTIFY, 'track123')]
);
$campaign = $campaignRepo->save($campaign->publish());

$oauthService->addProvider('user123', StreamingPlatform::SPOTIFY->getOAuthProvider());

try {
    $registration = $service->registerUser('user123', $campaign->id, StreamingPlatform::SPOTIFY);
    echo "✓ User registered successfully\n";
    echo "  - User ID: {$registration->userId}\n";
    echo "  - Campaign ID: {$registration->campaignId}\n";
    echo "  - Platform: {$registration->platform->value}\n";
    echo "  - Status: {$registration->status->value}\n";
} catch (\Exception $e) {
    echo "✗ Registration failed: {$e->getMessage()}\n";
}

echo "\n";

// Test 2: Check if user can register
echo "Test 2: Check if user can register\n";
$canRegister = $service->canUserRegister('user123', $campaign->id, StreamingPlatform::SPOTIFY);
echo "Can register (should be false - already registered): " . ($canRegister ? 'YES' : 'NO') . "\n";

echo "\n";

// Test 3: Get campaign stats
echo "Test 3: Get campaign statistics\n";
try {
    $stats = $service->getCampaignStats($campaign->id);
    echo "✓ Statistics retrieved\n";
    echo "  - Total registrations: {$stats['total_registrations']}\n";
    echo "  - Completed: {$stats['completed']}\n";
    echo "  - Pending: {$stats['pending']}\n";
    echo "  - Failed: {$stats['failed']}\n";
    echo "  - Days until release: {$stats['days_until_release']}\n";
} catch (\Exception $e) {
    echo "✗ Stats failed: {$e->getMessage()}\n";
}

echo "\n";
echo "All manual tests completed successfully!\n";