<?php
/**
 * Copyright seit 2024 Webshop System
 *
 * Unit-Tests für das Webshop-System
 *
 * @author    Webshop System
 * @license   GPL v3
 */

namespace Tests\Unit;

use PHPUnit\Framework\TestCase;
use Doctrine\DBAL\DriverManager;
use Doctrine\DBAL\Exception;

class ProductTest extends TestCase
{
    private $conn;
    
    protected function setUp(): void
    {
        // Test-Datenbank-Verbindung
        $connectionParams = [
            'dbname' => getenv('DB_DATABASE') ?: 'freeshop_test',
            'user' => getenv('DB_USERNAME') ?: 'freeshop_user',
            'password' => getenv('DB_PASSWORD') ?: 'freeshop_password',
            'host' => getenv('DB_HOST') ?: 'db',
            'driver' => 'pdo_mysql',
            'port' => getenv('DB_PORT') ?: 3306,
            'charset' => 'utf8mb4',
        ];
        
        try {
            $this->conn = DriverManager::getConnection($connectionParams);
            $this->setupTestData();
        } catch (Exception $e) {
            $this->markTestSkipped('Datenbankverbindung nicht verfügbar: ' . $e->getMessage());
        }
    }
    
    protected function tearDown(): void
    {
        if ($this->conn) {
            $this->cleanupTestData();
        }
    }
    
    private function setupTestData()
    {
        // Test-Kategorie erstellen
        $this->conn->executeStatement('
            INSERT INTO ws_category (name, description, active) 
            VALUES (?, ?, ?)
        ', ['Test Kategorie', 'Test Beschreibung', 1]);
        
        // Test-Produkte erstellen
        $this->conn->executeStatement('
            INSERT INTO ws_product (name, description, price, category_id, active) 
            VALUES (?, ?, ?, ?, ?)
        ', ['Test Produkt 1', 'Test Beschreibung 1', 19.99, 1, 1]);
        
        $this->conn->executeStatement('
            INSERT INTO ws_product (name, description, price, category_id, active) 
            VALUES (?, ?, ?, ?, ?)
        ', ['Test Produkt 2', 'Test Beschreibung 2', 29.99, 1, 1]);
    }
    
    private function cleanupTestData()
    {
        $this->conn->executeStatement('DELETE FROM ws_product WHERE name LIKE ?', ['Test Produkt%']);
        $this->conn->executeStatement('DELETE FROM ws_category WHERE name = ?', ['Test Kategorie']);
    }
    
    public function testProductCreation()
    {
        $stmt = $this->conn->prepare('
            INSERT INTO ws_product (name, description, price, category_id, active) 
            VALUES (?, ?, ?, ?, ?)
        ');
        
        $result = $stmt->execute(['Test Produkt 3', 'Test Beschreibung 3', 39.99, 1, 1]);
        
        $this->assertTrue($result);
        
        // Prüfen ob Produkt erstellt wurde
        $stmt = $this->conn->prepare('SELECT * FROM ws_product WHERE name = ?');
        $stmt->execute(['Test Produkt 3']);
        $product = $stmt->fetchAssociative();
        
        $this->assertNotNull($product);
        $this->assertEquals('Test Produkt 3', $product['name']);
        $this->assertEquals(39.99, $product['price']);
        $this->assertEquals(1, $product['active']);
    }
    
    public function testProductRetrieval()
    {
        $stmt = $this->conn->prepare('SELECT * FROM ws_product WHERE active = 1');
        $stmt->execute();
        $products = $stmt->fetchAllAssociative();
        
        $this->assertGreaterThan(0, count($products));
        
        foreach ($products as $product) {
            $this->assertArrayHasKey('id', $product);
            $this->assertArrayHasKey('name', $product);
            $this->assertArrayHasKey('price', $product);
            $this->assertEquals(1, $product['active']);
        }
    }
    
    public function testProductUpdate()
    {
        // Produkt aktualisieren
        $stmt = $this->conn->prepare('
            UPDATE ws_product 
            SET name = ?, price = ? 
            WHERE name = ?
        ');
        
        $result = $stmt->execute(['Aktualisiertes Produkt', 49.99, 'Test Produkt 1']);
        
        $this->assertTrue($result);
        
        // Prüfen ob Update erfolgreich war
        $stmt = $this->conn->prepare('SELECT * FROM ws_product WHERE name = ?');
        $stmt->execute(['Aktualisiertes Produkt']);
        $product = $stmt->fetchAssociative();
        
        $this->assertNotNull($product);
        $this->assertEquals('Aktualisiertes Produkt', $product['name']);
        $this->assertEquals(49.99, $product['price']);
    }
    
    public function testProductDeletion()
    {
        // Produkt löschen
        $stmt = $this->conn->prepare('DELETE FROM ws_product WHERE name = ?');
        $result = $stmt->execute(['Test Produkt 2']);
        
        $this->assertTrue($result);
        
        // Prüfen ob Produkt gelöscht wurde
        $stmt = $this->conn->prepare('SELECT * FROM ws_product WHERE name = ?');
        $stmt->execute(['Test Produkt 2']);
        $product = $stmt->fetchAssociative();
        
        $this->assertFalse($product);
    }
    
    public function testProductSearch()
    {
        $stmt = $this->conn->prepare('
            SELECT * FROM ws_product 
            WHERE active = 1 AND (name LIKE ? OR description LIKE ?)
        ');
        
        $stmt->execute(['%Test%', '%Test%']);
        $products = $stmt->fetchAllAssociative();
        
        $this->assertGreaterThan(0, count($products));
        
        foreach ($products as $product) {
            $this->assertTrue(
                stripos($product['name'], 'Test') !== false || 
                stripos($product['description'], 'Test') !== false
            );
        }
    }
    
    public function testProductPriceRange()
    {
        $stmt = $this->conn->prepare('
            SELECT * FROM ws_product 
            WHERE active = 1 AND price BETWEEN ? AND ?
            ORDER BY price ASC
        ');
        
        $stmt->execute([10.00, 50.00]);
        $products = $stmt->fetchAllAssociative();
        
        $this->assertGreaterThan(0, count($products));
        
        foreach ($products as $product) {
            $this->assertGreaterThanOrEqual(10.00, $product['price']);
            $this->assertLessThanOrEqual(50.00, $product['price']);
        }
    }
    
    public function testProductCategoryRelationship()
    {
        $stmt = $this->conn->prepare('
            SELECT p.*, c.name as category_name 
            FROM ws_product p 
            LEFT JOIN ws_category c ON p.category_id = c.id 
            WHERE p.active = 1
        ');
        
        $stmt->execute();
        $products = $stmt->fetchAllAssociative();
        
        $this->assertGreaterThan(0, count($products));
        
        foreach ($products as $product) {
            $this->assertArrayHasKey('category_name', $product);
            $this->assertNotNull($product['category_name']);
        }
    }
    
    public function testProductValidation()
    {
        // Test mit ungültigen Daten
        $stmt = $this->conn->prepare('
            INSERT INTO ws_product (name, description, price, category_id, active) 
            VALUES (?, ?, ?, ?, ?)
        ');
        
        // Leerer Name sollte fehlschlagen
        $this->expectException(Exception::class);
        $stmt->execute(['', 'Test Beschreibung', 19.99, 1, 1]);
    }
    
    public function testProductPagination()
    {
        $page = 1;
        $perPage = 2;
        $offset = ($page - 1) * $perPage;
        
        $stmt = $this->conn->prepare('
            SELECT * FROM ws_product 
            WHERE active = 1 
            ORDER BY id ASC 
            LIMIT ? OFFSET ?
        ');
        
        $stmt->execute([$perPage, $offset]);
        $products = $stmt->fetchAllAssociative();
        
        $this->assertLessThanOrEqual($perPage, count($products));
    }
}