<?php

namespace Tests\Unit\Services\Publishing;

use App\Enums\PlatformEnum;
use App\Exceptions\PublishException;
use App\Models\Article;
use App\Models\ArticlePublication;
use App\Models\Feed;
use App\Models\PlatformAccount;
use App\Models\PlatformChannel;
use App\Models\PlatformInstance;
use App\Modules\Lemmy\Services\LemmyPublisher;
use App\Services\Log\LogSaver;
use App\Services\Publishing\ArticlePublishingService;
use Exception;
use Illuminate\Database\Eloquent\Collection as EloquentCollection;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Mockery;
use RuntimeException;
use Tests\TestCase;

class ArticlePublishingServiceTest extends TestCase
{
    use RefreshDatabase;

    protected ArticlePublishingService $service;

    protected function setUp(): void
    {
        parent::setUp();
        $this->service = new ArticlePublishingService();
    }

    protected function tearDown(): void
    {
        Mockery::close();
        parent::tearDown();
    }

    public function test_publish_to_routed_channels_throws_exception_for_invalid_article(): void
    {
        $article = Article::factory()->create(['is_valid' => false]);
        $extractedData = ['title' => 'Test Title'];

        $this->expectException(PublishException::class);
        $this->expectExceptionMessage('CANNOT_PUBLISH_INVALID_ARTICLE');

        $this->service->publishToRoutedChannels($article, $extractedData);
    }

    public function test_publish_to_routed_channels_returns_empty_collection_when_no_active_channels(): void
    {
        $feed = Feed::factory()->create();
        $article = Article::factory()->create([
            'feed_id' => $feed->id,
            'is_valid' => true
        ]);
        $extractedData = ['title' => 'Test Title'];

        $result = $this->service->publishToRoutedChannels($article, $extractedData);

        $this->assertInstanceOf(EloquentCollection::class, $result);
        $this->assertTrue($result->isEmpty());
    }

    public function test_publish_to_routed_channels_skips_channels_without_active_accounts(): void
    {
        // Arrange: valid article
        $feed = Feed::factory()->create();
        $article = Article::factory()->create([
            'feed_id' => $feed->id,
            'is_valid' => true,
        ]);

        // Create an active channel with no active accounts
        $channel = PlatformChannel::factory()->create();
        $channel->load('platformInstance');

        // Mock feed->activeChannels()->with()->get() chain to return our channel
        $relationMock = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $relationMock->shouldReceive('with')->andReturnSelf();
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channel]));

        $feedMock = \Mockery::mock(Feed::class)->makePartial();
        $feedMock->setRawAttributes($feed->getAttributes());
        $feedMock->shouldReceive('activeChannels')->andReturn($relationMock);

        // Attach mocked feed to the article relation
        $article->setRelation('feed', $feedMock);

        // No publisher should be constructed because there are no active accounts

        // Also ensure channel->activePlatformAccounts() returns no accounts via relation mock
        $channelPartial = \Mockery::mock($channel)->makePartial();
        $accountsRelation = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation->shouldReceive('first')->andReturn(null);
        $channelPartial->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation);

        // Replace channel in relation return with the partial mock
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channelPartial]));

        // Act
        $result = $this->service->publishToRoutedChannels($article, ['title' => 'Test']);

        // Assert
        $this->assertTrue($result->isEmpty());
        $this->assertDatabaseCount('article_publications', 0);
    }

    public function test_publish_to_routed_channels_successfully_publishes_to_channel(): void
    {
        // Arrange
        $feed = Feed::factory()->create();
        $article = Article::factory()->create(['feed_id' => $feed->id, 'is_valid' => true]);

        $channel = PlatformChannel::factory()->create();
        $channel->load('platformInstance');

        // Create an active account and pretend it's active for the channel via relation mock
        $account = PlatformAccount::factory()->create();
        $channelMock = \Mockery::mock($channel)->makePartial();
        $accountsRelation = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation->shouldReceive('first')->andReturn($account);
        $channelMock->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation);

        // Mock feed activeChannels chain
        $relationMock = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $relationMock->shouldReceive('with')->andReturnSelf();
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channelMock]));
        $feedMock = \Mockery::mock(Feed::class)->makePartial();
        $feedMock->setRawAttributes($feed->getAttributes());
        $feedMock->shouldReceive('activeChannels')->andReturn($relationMock);
        $article->setRelation('feed', $feedMock);

        // Mock publisher via service seam
        $publisherDouble = \Mockery::mock(LemmyPublisher::class);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()
            ->andReturn(['post_view' => ['post' => ['id' => 123]]]);
        $service = \Mockery::mock(ArticlePublishingService::class)->makePartial();
        $service->shouldAllowMockingProtectedMethods();
        $service->shouldReceive('makePublisher')->andReturn($publisherDouble);

        // Act
        $result = $service->publishToRoutedChannels($article, ['title' => 'Hello']);

        // Assert
        $this->assertCount(1, $result);
        $this->assertDatabaseHas('article_publications', [
            'article_id' => $article->id,
            'platform_channel_id' => $channel->id,
            'post_id' => 123,
            'published_by' => $account->username,
        ]);
    }

    public function test_publish_to_routed_channels_handles_publishing_failure_gracefully(): void
    {
        // Arrange
        $feed = Feed::factory()->create();
        $article = Article::factory()->create(['feed_id' => $feed->id, 'is_valid' => true]);

        $channel = PlatformChannel::factory()->create();
        $channel->load('platformInstance');

        $account = PlatformAccount::factory()->create();
        $channelMock = \Mockery::mock($channel)->makePartial();
        $accountsRelation = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation->shouldReceive('first')->andReturn($account);
        $channelMock->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation);

        $relationMock = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $relationMock->shouldReceive('with')->andReturnSelf();
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channelMock]));
        $feedMock = \Mockery::mock(Feed::class)->makePartial();
        $feedMock->setRawAttributes($feed->getAttributes());
        $feedMock->shouldReceive('activeChannels')->andReturn($relationMock);
        $article->setRelation('feed', $feedMock);

        // Publisher throws an exception via service seam
        $publisherDouble = \Mockery::mock(LemmyPublisher::class);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()
            ->andThrow(new Exception('network error'));
        $service = \Mockery::mock(ArticlePublishingService::class)->makePartial();
        $service->shouldAllowMockingProtectedMethods();
        $service->shouldReceive('makePublisher')->andReturn($publisherDouble);

        // Act
        $result = $service->publishToRoutedChannels($article, ['title' => 'Hello']);

        // Assert
        $this->assertTrue($result->isEmpty());
        $this->assertDatabaseCount('article_publications', 0);
    }

    public function test_publish_to_routed_channels_publishes_to_multiple_channels(): void
    {
        // Arrange
        $feed = Feed::factory()->create();
        $article = Article::factory()->create(['feed_id' => $feed->id, 'is_valid' => true]);

        $channel1 = PlatformChannel::factory()->create();
        $channel2 = PlatformChannel::factory()->create();
        $channel1->load('platformInstance');
        $channel2->load('platformInstance');

        $account1 = PlatformAccount::factory()->create();
        $account2 = PlatformAccount::factory()->create();

        $channelMock1 = \Mockery::mock($channel1)->makePartial();
        $accountsRelation1 = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation1->shouldReceive('first')->andReturn($account1);
        $channelMock1->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation1);
        $channelMock2 = \Mockery::mock($channel2)->makePartial();
        $accountsRelation2 = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation2->shouldReceive('first')->andReturn($account2);
        $channelMock2->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation2);

        $relationMock = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $relationMock->shouldReceive('with')->andReturnSelf();
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channelMock1, $channelMock2]));
        $feedMock = \Mockery::mock(Feed::class)->makePartial();
        $feedMock->setRawAttributes($feed->getAttributes());
        $feedMock->shouldReceive('activeChannels')->andReturn($relationMock);
        $article->setRelation('feed', $feedMock);

        $publisherDouble = \Mockery::mock(LemmyPublisher::class);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()->andReturn(['post_view' => ['post' => ['id' => 100]]]);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()->andReturn(['post_view' => ['post' => ['id' => 200]]]);
        $service = \Mockery::mock(ArticlePublishingService::class)->makePartial();
        $service->shouldAllowMockingProtectedMethods();
        $service->shouldReceive('makePublisher')->andReturn($publisherDouble);

        // Act
        $result = $service->publishToRoutedChannels($article, ['title' => 'Hello']);

        // Assert
        $this->assertCount(2, $result);
        $this->assertDatabaseHas('article_publications', ['post_id' => 100]);
        $this->assertDatabaseHas('article_publications', ['post_id' => 200]);
    }

    public function test_publish_to_routed_channels_filters_out_failed_publications(): void
    {
        // Arrange
        $feed = Feed::factory()->create();
        $article = Article::factory()->create(['feed_id' => $feed->id, 'is_valid' => true]);

        $channel1 = PlatformChannel::factory()->create();
        $channel2 = PlatformChannel::factory()->create();
        $channel1->load('platformInstance');
        $channel2->load('platformInstance');

        $account1 = PlatformAccount::factory()->create();
        $account2 = PlatformAccount::factory()->create();

        $channelMock1 = \Mockery::mock($channel1)->makePartial();
        $accountsRelation1 = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation1->shouldReceive('first')->andReturn($account1);
        $channelMock1->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation1);
        $channelMock2 = \Mockery::mock($channel2)->makePartial();
        $accountsRelation2 = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $accountsRelation2->shouldReceive('first')->andReturn($account2);
        $channelMock2->shouldReceive('activePlatformAccounts')->andReturn($accountsRelation2);

        $relationMock = \Mockery::mock(\Illuminate\Database\Eloquent\Relations\BelongsToMany::class);
        $relationMock->shouldReceive('with')->andReturnSelf();
        $relationMock->shouldReceive('get')->andReturn(new EloquentCollection([$channelMock1, $channelMock2]));
        $feedMock = \Mockery::mock(Feed::class)->makePartial();
        $feedMock->setRawAttributes($feed->getAttributes());
        $feedMock->shouldReceive('activeChannels')->andReturn($relationMock);
        $article->setRelation('feed', $feedMock);

        $publisherDouble = \Mockery::mock(LemmyPublisher::class);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()->andReturn(['post_view' => ['post' => ['id' => 300]]]);
        $publisherDouble->shouldReceive('publishToChannel')
            ->once()->andThrow(new Exception('failed'));
        $service = \Mockery::mock(ArticlePublishingService::class)->makePartial();
        $service->shouldAllowMockingProtectedMethods();
        $service->shouldReceive('makePublisher')->andReturn($publisherDouble);

        // Act
        $result = $service->publishToRoutedChannels($article, ['title' => 'Hello']);

        // Assert
        $this->assertCount(1, $result);
        $this->assertDatabaseHas('article_publications', ['post_id' => 300]);
        $this->assertDatabaseCount('article_publications', 1);
    }
}