<?php

namespace Tests\Unit\Services;

use App\Services\Article\ValidationService;
use Tests\TestCase;
use Tests\Traits\CreatesArticleFetcher;
use ReflectionClass;
use ReflectionMethod;
use Mockery;

class ValidationServiceKeywordTest extends TestCase
{
    use CreatesArticleFetcher;
    
    private ValidationService $validationService;
    
    protected function setUp(): void
    {
        parent::setUp();
        $articleFetcher = $this->createArticleFetcher();
        $this->validationService = new ValidationService($articleFetcher);
    }
    
    protected function tearDown(): void
    {
        Mockery::close();
        parent::tearDown();
    }
    
    /**
     * Helper method to access private validateByKeywords method
     */
    private function getValidateByKeywordsMethod(): ReflectionMethod
    {
        $reflection = new ReflectionClass($this->validationService);
        $method = $reflection->getMethod('validateByKeywords');
        $method->setAccessible(true);
        return $method;
    }

    public function test_validates_belgian_political_keywords(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertTrue($method->invoke($this->validationService, 'This article discusses N-VA party policies.'));
        $this->assertTrue($method->invoke($this->validationService, 'Bart De Wever made a statement today.'));
        $this->assertTrue($method->invoke($this->validationService, 'Frank Vandenbroucke announced new healthcare policies.'));
        $this->assertTrue($method->invoke($this->validationService, 'Alexander De Croo addressed the nation.'));
        $this->assertTrue($method->invoke($this->validationService, 'The Vooruit party proposed new legislation.'));
        $this->assertTrue($method->invoke($this->validationService, 'Open Vld supports the new budget.'));
        $this->assertTrue($method->invoke($this->validationService, 'CD&V members voted on the proposal.'));
        $this->assertTrue($method->invoke($this->validationService, 'Vlaams Belang criticized the decision.'));
        $this->assertTrue($method->invoke($this->validationService, 'PTB organized a protest yesterday.'));
        $this->assertTrue($method->invoke($this->validationService, 'PVDA released a statement.'));
    }

    public function test_validates_belgian_location_keywords(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertTrue($method->invoke($this->validationService, 'This event took place in Belgium.'));
        $this->assertTrue($method->invoke($this->validationService, 'The Belgian government announced new policies.'));
        $this->assertTrue($method->invoke($this->validationService, 'Flanders saw increased tourism this year.'));
        $this->assertTrue($method->invoke($this->validationService, 'The Flemish government supports this initiative.'));
        $this->assertTrue($method->invoke($this->validationService, 'Wallonia will receive additional funding.'));
        $this->assertTrue($method->invoke($this->validationService, 'Brussels hosted the international conference.'));
        $this->assertTrue($method->invoke($this->validationService, 'Antwerp Pride attracted thousands of participants.'));
        $this->assertTrue($method->invoke($this->validationService, 'Ghent University published the research.'));
        $this->assertTrue($method->invoke($this->validationService, 'Bruges tourism numbers increased.'));
        $this->assertTrue($method->invoke($this->validationService, 'Leuven students organized the protest.'));
        $this->assertTrue($method->invoke($this->validationService, 'Mechelen city council voted on the proposal.'));
        $this->assertTrue($method->invoke($this->validationService, 'Namur hosted the cultural event.'));
        $this->assertTrue($method->invoke($this->validationService, 'Liège airport saw increased traffic.'));
        $this->assertTrue($method->invoke($this->validationService, 'Charleroi industrial zone expanded.'));
    }

    public function test_validates_government_keywords(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertTrue($method->invoke($this->validationService, 'Parliament voted on the new legislation.'));
        $this->assertTrue($method->invoke($this->validationService, 'The government announced budget cuts.'));
        $this->assertTrue($method->invoke($this->validationService, 'The minister addressed concerns about healthcare.'));
        $this->assertTrue($method->invoke($this->validationService, 'New policy changes will take effect next month.'));
        $this->assertTrue($method->invoke($this->validationService, 'The law was passed with majority support.'));
        $this->assertTrue($method->invoke($this->validationService, 'New legislation affects education funding.'));
    }

    public function test_validates_news_topic_keywords(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertTrue($method->invoke($this->validationService, 'The economy showed signs of recovery.'));
        $this->assertTrue($method->invoke($this->validationService, 'Economic indicators improved this quarter.'));
        $this->assertTrue($method->invoke($this->validationService, 'Education reforms were announced today.'));
        $this->assertTrue($method->invoke($this->validationService, 'Healthcare workers received additional support.'));
        $this->assertTrue($method->invoke($this->validationService, 'Transport infrastructure will be upgraded.'));
        $this->assertTrue($method->invoke($this->validationService, 'Climate change policies were discussed.'));
        $this->assertTrue($method->invoke($this->validationService, 'Energy prices have increased significantly.'));
        $this->assertTrue($method->invoke($this->validationService, 'European Union voted on trade agreements.'));
        $this->assertTrue($method->invoke($this->validationService, 'EU sanctions were extended.'));
        $this->assertTrue($method->invoke($this->validationService, 'Migration policies need urgent review.'));
        $this->assertTrue($method->invoke($this->validationService, 'Security measures were enhanced.'));
        $this->assertTrue($method->invoke($this->validationService, 'Justice system reforms are underway.'));
        $this->assertTrue($method->invoke($this->validationService, 'Culture festivals received government funding.'));
        $this->assertTrue($method->invoke($this->validationService, 'Police reported 18 administrative detentions.'));
    }

    public function test_case_insensitive_keyword_matching(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertTrue($method->invoke($this->validationService, 'This article mentions ANTWERP in capital letters.'));
        $this->assertTrue($method->invoke($this->validationService, 'brussels is mentioned in lowercase.'));
        $this->assertTrue($method->invoke($this->validationService, 'BeLgIuM is mentioned in mixed case.'));
        $this->assertTrue($method->invoke($this->validationService, 'The FLEMISH government announced policies.'));
        $this->assertTrue($method->invoke($this->validationService, 'n-va party policies were discussed.'));
        $this->assertTrue($method->invoke($this->validationService, 'EUROPEAN union directives apply.'));
    }

    public function test_rejects_content_without_belgian_keywords(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertFalse($method->invoke($this->validationService, 'This article discusses random topics.'));
        $this->assertFalse($method->invoke($this->validationService, 'International news from other countries.'));
        $this->assertFalse($method->invoke($this->validationService, 'Technology updates and innovations.'));
        $this->assertFalse($method->invoke($this->validationService, 'Sports results from around the world.'));
        $this->assertFalse($method->invoke($this->validationService, 'Entertainment news and celebrity gossip.'));
        $this->assertFalse($method->invoke($this->validationService, 'Weather forecast for next week.'));
        $this->assertFalse($method->invoke($this->validationService, 'Stock market analysis and trends.'));
    }

    public function test_keyword_matching_in_longer_text(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $longText = '
            This is a comprehensive article about various topics. 
            It covers international relations, global economics, and regional policies.
            However, it specifically mentions that Antwerp hosted a major conference
            last week with participants from around the world. The event was
            considered highly successful and will likely be repeated next year.
        ';

        $this->assertTrue($method->invoke($this->validationService, $longText));

        $longTextWithoutKeywords = '
            This is a comprehensive article about various topics. 
            It covers international relations, global finance, and commercial matters.
            The conference was held in a major international city and attracted
            participants from around the world. The event was considered highly
            successful and will likely be repeated next year.
        ';

        $this->assertFalse($method->invoke($this->validationService, $longTextWithoutKeywords));
    }

    public function test_empty_content_returns_false(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $this->assertFalse($method->invoke($this->validationService, ''));
        $this->assertFalse($method->invoke($this->validationService, '   '));
        $this->assertFalse($method->invoke($this->validationService, "\n\n\t"));
    }

    /**
     * Test comprehensive keyword coverage to ensure all expected keywords work
     */
    public function test_all_keywords_are_functional(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        $expectedKeywords = [
            // Political parties and leaders
            'N-VA', 'Bart De Wever', 'Frank Vandenbroucke', 'Alexander De Croo',
            'Vooruit', 'Open Vld', 'CD&V', 'Vlaams Belang', 'PTB', 'PVDA',
            
            // Belgian locations and institutions
            'Belgium', 'Belgian', 'Flanders', 'Flemish', 'Wallonia', 'Brussels',
            'Antwerp', 'Ghent', 'Bruges', 'Leuven', 'Mechelen', 'Namur', 'Liège', 'Charleroi',
            'parliament', 'government', 'minister', 'policy', 'law', 'legislation',
            
            // Common Belgian news topics
            'economy', 'economic', 'education', 'healthcare', 'transport', 'climate', 'energy',
            'European', 'EU', 'migration', 'security', 'justice', 'culture', 'police'
        ];

        foreach ($expectedKeywords as $keyword) {
            $testContent = "This article contains the keyword: {$keyword}.";
            $result = $method->invoke($this->validationService, $testContent);
            
            $this->assertTrue($result, "Keyword '{$keyword}' should match but didn't");
        }
    }

    public function test_partial_keyword_matches_work(): void
    {
        $method = $this->getValidateByKeywordsMethod();

        // Keywords should match when they appear as part of larger words or phrases
        $this->assertTrue($method->invoke($this->validationService, 'Anti-government protesters gathered.'));
        $this->assertTrue($method->invoke($this->validationService, 'The policeman directed traffic.'));
        $this->assertTrue($method->invoke($this->validationService, 'Educational reforms are needed.'));
        $this->assertTrue($method->invoke($this->validationService, 'Economic growth accelerated.'));
        $this->assertTrue($method->invoke($this->validationService, 'The European directive was implemented.'));
    }
}