<?php

namespace Tests\Unit\Modules\Lemmy\Services;

use App\Enums\PlatformEnum;
use App\Models\PlatformChannelPost;
use App\Modules\Lemmy\LemmyRequest;
use App\Modules\Lemmy\Services\LemmyApiService;
use Exception;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Http\Client\Response;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Mockery;
use Tests\TestCase;

class LemmyApiServiceTest extends TestCase
{
    use RefreshDatabase;

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

    public function test_constructor_sets_instance(): void
    {
        $service = new LemmyApiService('lemmy.test');
        
        $this->assertInstanceOf(LemmyApiService::class, $service);
    }

    public function test_login_successful(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response([
                'jwt' => 'test-jwt-token'
            ], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->login('testuser', 'testpass');

        $this->assertEquals('test-jwt-token', $result);
        
        Http::assertSent(function ($request) {
            return $request->url() === 'https://lemmy.test/api/v3/user/login' &&
                   $request->method() === 'POST' &&
                   $request->data() === [
                       'username_or_email' => 'testuser',
                       'password' => 'testpass'
                   ];
        });
    }

    public function test_login_failed_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['error' => 'Invalid credentials'], 401)
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Lemmy login failed', Mockery::type('array'));

        $service = new LemmyApiService('lemmy.test');
        $result = $service->login('testuser', 'wrongpass');

        $this->assertNull($result);
    }

    public function test_login_missing_jwt_in_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => Http::response(['success' => true], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->login('testuser', 'testpass');

        $this->assertNull($result);
    }

    public function test_login_exception_handling(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/user/login' => function () {
                throw new Exception('Network error');
            }
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Lemmy login exception', ['error' => 'Network error']);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->login('testuser', 'testpass');

        $this->assertNull($result);
    }

    public function test_get_community_id_successful(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/community*' => Http::response([
                'community_view' => [
                    'community' => [
                        'id' => 123
                    ]
                ]
            ], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->getCommunityId('testcommunity', 'test-token');

        $this->assertEquals(123, $result);
        
        Http::assertSent(function ($request) {
            return str_contains($request->url(), 'community') &&
                   $request->hasHeader('Authorization', 'Bearer test-token');
        });
    }

    public function test_get_community_id_failed_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/community*' => Http::response(['error' => 'Not found'], 404)
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Community lookup failed', Mockery::type('array'));

        $service = new LemmyApiService('lemmy.test');
        
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Failed to fetch community: 404');
        
        $service->getCommunityId('nonexistent', 'test-token');
    }

    public function test_get_community_id_missing_data(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/community*' => Http::response([
                'community_view' => ['community' => []]
            ], 200)
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Community lookup failed', Mockery::type('array'));

        $service = new LemmyApiService('lemmy.test');
        
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Community not found');
        
        $service->getCommunityId('testcommunity', 'test-token');
    }

    public function test_sync_channel_posts_successful(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post/list*' => Http::response([
                'posts' => [
                    [
                        'post' => [
                            'id' => 1,
                            'name' => 'Test Post 1',
                            'url' => 'https://example.com/1',
                            'published' => '2023-01-01T00:00:00Z'
                        ]
                    ],
                    [
                        'post' => [
                            'id' => 2,
                            'name' => 'Test Post 2',
                            'published' => '2023-01-02T00:00:00Z'
                        ]
                    ]
                ]
            ], 200)
        ]);

        Log::shouldReceive('info')
            ->once()
            ->with('Synced channel posts', [
                'platform_channel_id' => 123,
                'posts_count' => 2
            ]);

        $service = new LemmyApiService('lemmy.test');
        $service->syncChannelPosts('test-token', 123, 'testcommunity');

        // Verify posts were stored
        $this->assertDatabaseCount('platform_channel_posts', 2);
        $this->assertDatabaseHas('platform_channel_posts', [
            'platform' => PlatformEnum::LEMMY,
            'channel_id' => '123',
            'post_id' => '1'
        ]);
    }

    public function test_sync_channel_posts_failed_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post/list*' => Http::response(['error' => 'Unauthorized'], 401)
        ]);

        Log::shouldReceive('warning')
            ->once()
            ->with('Failed to sync channel posts', [
                'status' => 401,
                'platform_channel_id' => 123
            ]);

        $service = new LemmyApiService('lemmy.test');
        $service->syncChannelPosts('test-token', 123, 'testcommunity');

        // Verify no posts were stored
        $this->assertDatabaseCount('platform_channel_posts', 0);
    }

    public function test_sync_channel_posts_exception_handling(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post/list*' => function () {
                throw new Exception('Network error');
            }
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Exception while syncing channel posts', [
                'error' => 'Network error',
                'platform_channel_id' => 123
            ]);

        $service = new LemmyApiService('lemmy.test');
        $service->syncChannelPosts('test-token', 123, 'testcommunity');

        $this->assertDatabaseCount('platform_channel_posts', 0);
    }

    public function test_create_post_successful_minimal_data(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post' => Http::response([
                'post_view' => [
                    'post' => [
                        'id' => 456,
                        'name' => 'Test Title'
                    ]
                ]
            ], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->createPost('test-token', 'Test Title', 'Test Body', 123);

        $this->assertIsArray($result);
        $this->assertEquals(456, $result['post_view']['post']['id']);
        
        Http::assertSent(function ($request) {
            return $request->url() === 'https://lemmy.test/api/v3/post' &&
                   $request->method() === 'POST' &&
                   $request->data() === [
                       'name' => 'Test Title',
                       'body' => 'Test Body',
                       'community_id' => 123
                   ];
        });
    }

    public function test_create_post_successful_with_all_optional_data(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post' => Http::response([
                'post_view' => ['post' => ['id' => 456]]
            ], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->createPost(
            'test-token',
            'Test Title',
            'Test Body',
            123,
            'https://example.com',
            'https://example.com/thumb.jpg',
            2
        );

        $this->assertIsArray($result);
        
        Http::assertSent(function ($request) {
            return $request->data() === [
                'name' => 'Test Title',
                'body' => 'Test Body',
                'community_id' => 123,
                'url' => 'https://example.com',
                'custom_thumbnail' => 'https://example.com/thumb.jpg',
                'language_id' => 2
            ];
        });
    }

    public function test_create_post_failed_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post' => Http::response(['error' => 'Validation failed'], 400)
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Post creation failed', Mockery::type('array'));

        $service = new LemmyApiService('lemmy.test');
        
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Failed to create post: 400');
        
        $service->createPost('test-token', 'Test Title', 'Test Body', 123);
    }

    public function test_create_post_exception_handling(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/post' => function () {
                throw new Exception('Network error');
            }
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Post creation failed', ['error' => 'Network error']);

        $service = new LemmyApiService('lemmy.test');
        
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Network error');
        
        $service->createPost('test-token', 'Test Title', 'Test Body', 123);
    }

    public function test_get_languages_successful(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/site' => Http::response([
                'all_languages' => [
                    ['id' => 0, 'code' => 'und', 'name' => 'Undetermined'],
                    ['id' => 1, 'code' => 'en', 'name' => 'English'],
                    ['id' => 2, 'code' => 'es', 'name' => 'Spanish']
                ]
            ], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->getLanguages();

        $this->assertIsArray($result);
        $this->assertCount(3, $result);
        $this->assertEquals('English', $result[1]['name']);
    }

    public function test_get_languages_failed_response(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/site' => Http::response(['error' => 'Server error'], 500)
        ]);

        Log::shouldReceive('warning')
            ->once()
            ->with('Failed to fetch site languages', ['status' => 500]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->getLanguages();

        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }

    public function test_get_languages_missing_data(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/site' => Http::response(['site_view' => []], 200)
        ]);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->getLanguages();

        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }

    public function test_get_languages_exception_handling(): void
    {
        Http::fake([
            'https://lemmy.test/api/v3/site' => function () {
                throw new Exception('Network error');
            }
        ]);

        Log::shouldReceive('error')
            ->once()
            ->with('Exception while fetching languages', ['error' => 'Network error']);

        $service = new LemmyApiService('lemmy.test');
        $result = $service->getLanguages();

        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }
}