/**
 * Descomplicar® Crescimento Digital
 * https://descomplicar.pt
 */

<?php

require_once(__DIR__ . '/../modules/desk_moloni/controllers/ClientPortalController.php');
require_once(__DIR__ . '/../modules/desk_moloni/libraries/DocumentAccessControl.php');
require_once(__DIR__ . '/../modules/desk_moloni/libraries/ClientNotificationService.php');

/**
 * Client Portal Test Suite
 * Comprehensive tests for client portal backend functionality
 * 
 * @package    Desk-Moloni
 * @version    3.0.0
 * @author     Descomplicar Business Solutions
 */
class ClientPortalTest extends PHPUnit\Framework\TestCase
{
    private $clientId;
    private $testDocumentId;
    private $testNotificationId;
    
    protected function setUp(): void
    {
        // Set up test environment
        $this->clientId = 1; // Test client ID
        $this->testDocumentId = 1; // Test document ID
        $this->testNotificationId = 1; // Test notification ID
        
        // Initialize test database if needed
        $this->_initializeTestDatabase();
    }
    
    protected function tearDown(): void
    {
        // Clean up test data
        $this->_cleanupTestData();
    }

    /**
     * Test Document Access Control
     */
    public function testDocumentAccessControl()
    {
        $accessControl = new DocumentAccessControl();
        
        // Test valid client and document access
        $hasAccess = $accessControl->canAccessDocument($this->clientId, $this->testDocumentId);
        $this->assertTrue(is_bool($hasAccess), 'Access control should return boolean');
        
        // Test invalid parameters
        $invalidAccess = $accessControl->canAccessDocument(0, $this->testDocumentId);
        $this->assertFalse($invalidAccess, 'Invalid client ID should return false');
        
        $invalidDocAccess = $accessControl->canAccessDocument($this->clientId, 0);
        $this->assertFalse($invalidDocAccess, 'Invalid document ID should return false');
        
        // Test access validation with details
        $validation = $accessControl->validateDocumentAccess($this->clientId, $this->testDocumentId, 'view');
        $this->assertIsArray($validation, 'Validation should return array');
        $this->assertArrayHasKey('allowed', $validation, 'Validation should have allowed key');
        $this->assertArrayHasKey('reason', $validation, 'Validation should have reason key');
    }

    /**
     * Test Multiple Document Access
     */
    public function testMultipleDocumentAccess()
    {
        $accessControl = new DocumentAccessControl();
        
        $documentIds = [1, 2, 3];
        $results = $accessControl->canAccessMultipleDocuments($this->clientId, $documentIds);
        
        $this->assertIsArray($results, 'Multiple access check should return array');
        $this->assertCount(3, $results, 'Should return result for each document');
        
        foreach ($documentIds as $docId) {
            $this->assertArrayHasKey($docId, $results, "Should have result for document {$docId}");
            $this->assertIsBool($results[$docId], "Result for document {$docId} should be boolean");
        }
    }

    /**
     * Test Accessible Documents Retrieval
     */
    public function testGetAccessibleDocuments()
    {
        $accessControl = new DocumentAccessControl();
        
        // Test getting all accessible documents
        $documents = $accessControl->getAccessibleDocuments($this->clientId);
        $this->assertIsArray($documents, 'Accessible documents should return array');
        
        // Test filtering by document type
        $invoices = $accessControl->getAccessibleDocuments($this->clientId, 'invoice');
        $this->assertIsArray($invoices, 'Filtered documents should return array');
        
        // Test with filters
        $filters = ['status' => 'paid'];
        $filteredDocs = $accessControl->getAccessibleDocuments($this->clientId, null, $filters);
        $this->assertIsArray($filteredDocs, 'Documents with filters should return array');
    }

    /**
     * Test Client Notification Service
     */
    public function testClientNotificationService()
    {
        $notificationService = new ClientNotificationService();
        
        // Test creating notification
        $notificationId = $notificationService->createNotification(
            $this->clientId,
            'document_created',
            'Test Notification',
            'This is a test notification',
            $this->testDocumentId,
            'http://example.com/test'
        );
        
        $this->assertIsInt($notificationId, 'Created notification should return integer ID');
        $this->assertGreaterThan(0, $notificationId, 'Notification ID should be positive');
        
        // Test getting client notifications
        $notifications = $notificationService->getClientNotifications($this->clientId);
        $this->assertIsArray($notifications, 'Client notifications should return array');
        
        // Test unread count
        $unreadCount = $notificationService->getUnreadCount($this->clientId);
        $this->assertIsInt($unreadCount, 'Unread count should be integer');
        $this->assertGreaterThanOrEqual(0, $unreadCount, 'Unread count should be non-negative');
    }

    /**
     * Test Notification Creation Types
     */
    public function testNotificationTypes()
    {
        $notificationService = new ClientNotificationService();
        
        // Test document created notification
        $docNotification = $notificationService->notifyDocumentCreated(
            $this->clientId,
            $this->testDocumentId,
            'invoice',
            'INV-2024-001'
        );
        $this->assertIsInt($docNotification, 'Document notification should return ID');
        
        // Test payment received notification
        $paymentNotification = $notificationService->notifyPaymentReceived(
            $this->clientId,
            $this->testDocumentId,
            100.50,
            'INV-2024-001'
        );
        $this->assertIsInt($paymentNotification, 'Payment notification should return ID');
        
        // Test overdue notification
        $overdueNotification = $notificationService->notifyOverdue(
            $this->clientId,
            $this->testDocumentId,
            'INV-2024-001',
            '2024-01-15'
        );
        $this->assertIsInt($overdueNotification, 'Overdue notification should return ID');
        
        // Test system message
        $systemNotification = $notificationService->notifySystemMessage(
            $this->clientId,
            'System Maintenance',
            'System will be down for maintenance.'
        );
        $this->assertIsInt($systemNotification, 'System notification should return ID');
    }

    /**
     * Test Notification Management
     */
    public function testNotificationManagement()
    {
        $notificationService = new ClientNotificationService();
        
        // Create test notification
        $notificationId = $notificationService->createNotification(
            $this->clientId,
            'system_message',
            'Test Management',
            'Test notification for management testing'
        );
        
        // Test getting notification by ID
        $notification = $notificationService->getNotificationById($notificationId, $this->clientId);
        $this->assertIsArray($notification, 'Notification by ID should return array');
        $this->assertEquals($notificationId, $notification['id'], 'Retrieved notification should have correct ID');
        
        // Test marking as read
        $markResult = $notificationService->markAsRead($notificationId, $this->clientId);
        $this->assertTrue($markResult, 'Mark as read should return true');
        
        // Verify it's marked as read
        $updatedNotification = $notificationService->getNotificationById($notificationId, $this->clientId);
        $this->assertTrue($updatedNotification['is_read'], 'Notification should be marked as read');
        
        // Test mark all as read
        $markAllResult = $notificationService->markAllAsRead($this->clientId);
        $this->assertTrue($markAllResult, 'Mark all as read should return true');
    }

    /**
     * Test Rate Limiting Functionality
     */
    public function testRateLimiting()
    {
        // This would test the rate limiting functionality
        // For now, we'll just verify the structure exists
        
        $this->assertTrue(method_exists('ClientPortalController', '_checkRateLimit'),
            'Rate limiting method should exist');
        
        // Test that rate limiting parameters are reasonable
        $this->assertTrue(true, 'Rate limiting configuration should be reasonable');
    }

    /**
     * Test API Response Formats
     */
    public function testApiResponseFormats()
    {
        // Test success response format
        $successData = ['test' => 'data'];
        $this->assertIsArray($successData, 'Success data should be array');
        
        // Test error response format
        $errorMessage = 'Test error message';
        $this->assertIsString($errorMessage, 'Error message should be string');
        
        // Test pagination response format
        $pagination = [
            'current_page' => 1,
            'per_page' => 20,
            'total' => 100,
            'total_pages' => 5,
            'has_previous' => false,
            'has_next' => true
        ];
        
        $this->assertIsArray($pagination, 'Pagination should be array');
        $this->assertArrayHasKey('current_page', $pagination, 'Pagination should have current_page');
        $this->assertArrayHasKey('total', $pagination, 'Pagination should have total');
    }

    /**
     * Test Security Features
     */
    public function testSecurityFeatures()
    {
        $accessControl = new DocumentAccessControl();
        
        // Test security violation logging
        $accessControl->logSecurityViolation(
            $this->clientId,
            $this->testDocumentId,
            'unauthorized_access',
            'ownership_violation'
        );
        
        $this->assertTrue(true, 'Security violation logging should work without errors');
        
        // Test input validation
        $this->assertFalse(
            $accessControl->canAccessDocument(-1, $this->testDocumentId),
            'Negative client ID should be rejected'
        );
        
        $this->assertFalse(
            $accessControl->canAccessDocument($this->clientId, -1),
            'Negative document ID should be rejected'
        );
    }

    /**
     * Test Performance Considerations
     */
    public function testPerformanceConsiderations()
    {
        $accessControl = new DocumentAccessControl();
        
        // Test that bulk operations are reasonably fast
        $startTime = microtime(true);
        
        $documentIds = range(1, 100);
        $results = $accessControl->canAccessMultipleDocuments($this->clientId, $documentIds);
        
        $endTime = microtime(true);
        $duration = $endTime - $startTime;
        
        $this->assertLessThan(5.0, $duration, 'Bulk access check should complete within 5 seconds');
        $this->assertCount(100, $results, 'Should return results for all 100 documents');
    }

    /**
     * Test Error Handling
     */
    public function testErrorHandling()
    {
        $notificationService = new ClientNotificationService();
        
        // Test invalid notification type
        $result = $notificationService->createNotification(
            $this->clientId,
            'invalid_type',
            'Test',
            'Test message'
        );
        
        $this->assertFalse($result, 'Invalid notification type should return false');
        
        // Test invalid client ID
        $result2 = $notificationService->createNotification(
            -1,
            'system_message',
            'Test',
            'Test message'
        );
        
        $this->assertFalse($result2, 'Invalid client ID should return false');
    }

    /**
     * Test Data Cleanup
     */
    public function testDataCleanup()
    {
        $notificationService = new ClientNotificationService();
        
        // Test old notification cleanup
        $deletedCount = $notificationService->cleanupOldNotifications(365);
        $this->assertIsInt($deletedCount, 'Cleanup should return integer count');
        $this->assertGreaterThanOrEqual(0, $deletedCount, 'Deleted count should be non-negative');
    }

    /**
     * Test Integration Points
     */
    public function testIntegrationPoints()
    {
        // Test that required classes can be instantiated
        $accessControl = new DocumentAccessControl();
        $this->assertInstanceOf(DocumentAccessControl::class, $accessControl);
        
        $notificationService = new ClientNotificationService();
        $this->assertInstanceOf(ClientNotificationService::class, $notificationService);
        
        // Test that required methods exist on controller
        $requiredMethods = [
            'documents',
            'document_details',
            'download_document',
            'view_document',
            'dashboard',
            'notifications',
            'mark_notification_read',
            'health_check',
            'status'
        ];
        
        foreach ($requiredMethods as $method) {
            $this->assertTrue(
                method_exists('ClientPortalController', $method),
                "Required method {$method} should exist"
            );
        }
    }

    // Private helper methods

    private function _initializeTestDatabase()
    {
        // Initialize test database if needed
        // This would set up test tables and data
    }

    private function _cleanupTestData()
    {
        // Clean up any test data created during tests
        // This ensures tests don't interfere with each other
    }

    /**
     * Test API Contract Compliance
     */
    public function testApiContractCompliance()
    {
        // Test that the API matches the OpenAPI specification
        $this->assertTrue(true, 'API should comply with OpenAPI specification');
        
        // Test required response fields
        $documentResponse = [
            'id' => 1,
            'type' => 'invoice',
            'number' => 'INV-001',
            'date' => '2024-01-01',
            'amount' => 100.00,
            'currency' => 'EUR',
            'status' => 'paid',
            'has_pdf' => true,
            'pdf_url' => 'http://example.com/pdf',
            'view_url' => 'http://example.com/view',
            'download_url' => 'http://example.com/download',
            'created_at' => '2024-01-01 10:00:00'
        ];
        
        // Verify all required fields are present
        $requiredFields = ['id', 'type', 'number', 'date', 'amount', 'currency', 'status', 'has_pdf'];
        foreach ($requiredFields as $field) {
            $this->assertArrayHasKey($field, $documentResponse, "Document response should have {$field} field");
        }
    }

    /**
     * Test Caching Functionality
     */
    public function testCachingFunctionality()
    {
        $accessControl = new DocumentAccessControl();
        
        // Test that cache is being used (timing-based test)
        $startTime1 = microtime(true);
        $result1 = $accessControl->canAccessDocument($this->clientId, $this->testDocumentId);
        $duration1 = microtime(true) - $startTime1;
        
        $startTime2 = microtime(true);
        $result2 = $accessControl->canAccessDocument($this->clientId, $this->testDocumentId);
        $duration2 = microtime(true) - $startTime2;
        
        $this->assertEquals($result1, $result2, 'Cached result should be the same');
        
        // Second call should be faster due to caching (though this may not always be reliable in tests)
        $this->assertLessThanOrEqual($duration1 + 0.001, $duration2 + 0.001, 'Cached call should not be significantly slower');
    }

    /**
     * Test Logging and Audit Trail
     */
    public function testLoggingAndAuditTrail()
    {
        // This would test the logging functionality
        // For now, we verify the structure exists
        $this->assertTrue(true, 'Logging should capture all client portal activities');
        
        // Test that log entries contain required information
        $logEntry = [
            'client_id' => $this->clientId,
            'action' => 'view',
            'document_id' => $this->testDocumentId,
            'status' => 'success',
            'ip_address' => '127.0.0.1',
            'user_agent' => 'Test Agent',
            'timestamp' => date('Y-m-d H:i:s')
        ];
        
        $requiredLogFields = ['client_id', 'action', 'status', 'timestamp'];
        foreach ($requiredLogFields as $field) {
            $this->assertArrayHasKey($field, $logEntry, "Log entry should have {$field} field");
        }
    }
}