<?php

namespace Tests\Unit;

use Tests\TestCase;
use App\Services\GeminiService;
use Illuminate\Support\Facades\Config;
use ReflectionMethod;

class GeminiServiceTest extends TestCase
{
    /**
     * Test dynamic detection of Vertex AI vs AI Studio drivers.
     */
    public function test_driver_detection()
    {
        // 1. Test standard AI Studio API Key
        Config::set('services.gemini.key', 'AIzaSyFakeKey');
        Config::set('services.gemini.credentials_path', null);
        
        $service = new GeminiService();
        $method = new ReflectionMethod(GeminiService::class, 'analyzeContent');
        $method->setAccessible(true);
        
        try {
            $method->invoke($service, 'content', 'image/png', 'test.png');
        } catch (\Exception $e) {
            // Exception is expected since the key is fake, but it should try Gemini
            $this->assertTrue(
                str_contains($e->getMessage(), 'Gemini') || 
                str_contains($e->getMessage(), 'communication avec l\'API') ||
                str_contains($e->getMessage(), 'La clé API Gemini')
            );
        }

        // 2. Test Vertex AI JSON Credentials string
        $fakeCreds = json_encode([
            'type' => 'service_account',
            'project_id' => 'my-vertex-project',
        ]);
        Config::set('services.gemini.key', $fakeCreds);
        
        $serviceVertex = new GeminiService();
        try {
            $method->invoke($serviceVertex, 'content', 'image/png', 'test.png');
        } catch (\Exception $e) {
            // Exception expected during auth token exchange, but it must be a Vertex error
            $this->assertStringContainsString('Vertex', $e->getMessage());
        }
    }

    /**
     * Test MistralService features.
     */
    public function test_mistral_service()
    {
        Config::set('services.mistral.key', 'fake-mistral-key');
        
        $mistral = new \App\Services\MistralService();
        $method = new ReflectionMethod(\App\Services\MistralService::class, 'analyzeContent');
        $method->setAccessible(true);

        // PDF should be rejected
        $this->expectException(\Exception::class);
        $this->expectExceptionMessage('ne prend en charge que les images');
        $method->invoke($mistral, 'content', 'application/pdf', 'test.pdf');
    }
}