<?php

namespace Tests\Unit\Services;

use App\Services\Article\ArticleFetcher;
use App\Models\Feed;
use App\Models\Article;
use Tests\TestCase;
use Illuminate\Foundation\Testing\RefreshDatabase;

class ArticleFetcherTest extends TestCase
{
    use RefreshDatabase;

    public function test_get_articles_from_feed_returns_collection(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'rss',
            'url' => 'https://example.com/feed.rss'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
    }

    public function test_get_articles_from_rss_feed_returns_empty_collection(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'rss',
            'url' => 'https://example.com/feed.rss'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        // RSS parsing is not implemented yet, should return empty collection
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_website_feed_handles_no_parser(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website',
            'url' => 'https://unsupported-site.com/'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        // Should return empty collection when no parser is available
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_get_articles_from_unsupported_feed_type(): void
    {
        $feed = Feed::factory()->create([
            'type' => 'website', // Use valid type but with unsupported URL
            'url' => 'https://unsupported-feed-type.com/feed'
        ]);

        $result = ArticleFetcher::getArticlesFromFeed($feed);
        
        $this->assertInstanceOf(\Illuminate\Support\Collection::class, $result);
        $this->assertEmpty($result);
    }

    public function test_fetch_article_data_returns_array(): void
    {
        $article = Article::factory()->create([
            'url' => 'https://example.com/article'
        ]);

        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        // Will be empty array due to unsupported URL in test
        $this->assertEmpty($result);
    }

    public function test_fetch_article_data_handles_invalid_url(): void
    {
        $article = Article::factory()->create([
            'url' => 'invalid-url'
        ]);

        $result = ArticleFetcher::fetchArticleData($article);
        
        $this->assertIsArray($result);
        $this->assertEmpty($result);
    }
}