<?php
/**
 * Test Helper Utilities
 *
 * @package CareBook\Ultimate\Tests\Utils
 * @since 1.0.0
 */

declare(strict_types=1);

namespace CareBook\Ultimate\Tests\Utils;

use CareBook\Ultimate\Tests\Mocks\WordPressMock;
use CareBook\Ultimate\Tests\Mocks\DatabaseMock;
use CareBook\Ultimate\Tests\Mocks\KiviCareMock;

/**
 * TestHelper class
 * 
 * Provides common utilities and helpers for testing
 * 
 * @since 1.0.0
 */
class TestHelper
{
    /**
     * Reset all mocks to clean state
     * 
     * @return void
     * @since 1.0.0
     */
    public static function resetAllMocks(): void
    {
        WordPressMock::reset();
        DatabaseMock::reset();
        KiviCareMock::reset();
    }
    
    /**
     * Setup standard WordPress testing environment
     * 
     * @return void
     * @since 1.0.0
     */
    public static function setupWordPressEnvironment(): void
    {
        WordPressMock::reset();
        
        // Set default user capabilities
        WordPressMock::setUserCapabilities([
            'manage_options' => true,
            'edit_posts' => true,
            'read' => true
        ]);
        
        // Set default user ID
        WordPressMock::setUserId(1);
        
        // Set common WordPress options
        WordPressMock::update_option('siteurl', 'https://example.com');
        WordPressMock::update_option('home', 'https://example.com');
        WordPressMock::update_option('admin_email', 'admin@example.com');
    }
    
    /**
     * Setup standard database testing environment
     * 
     * @return void
     * @since 1.0.0
     */
    public static function setupDatabaseEnvironment(): void
    {
        DatabaseMock::reset();
        
        // Create standard tables
        DatabaseMock::createTable('wp_care_booking_restrictions');
        DatabaseMock::createTable('kc_appointments');
        DatabaseMock::createTable('kc_doctors');
        DatabaseMock::createTable('kc_services');
    }
    
    /**
     * Setup standard KiviCare testing environment
     * 
     * @return void
     * @since 1.0.0
     */
    public static function setupKiviCareEnvironment(): void
    {
        KiviCareMock::reset();
        KiviCareMock::setPluginActive(true);
        KiviCareMock::setupDefaultMockData();
    }
    
    /**
     * Setup complete testing environment
     * 
     * @return void
     * @since 1.0.0
     */
    public static function setupCompleteEnvironment(): void
    {
        self::setupWordPressEnvironment();
        self::setupDatabaseEnvironment();
        self::setupKiviCareEnvironment();
    }
    
    /**
     * Create sample restriction data for testing
     * 
     * @param int $count Number of restrictions to create
     * @return array<int, array> Created restrictions data
     * @since 1.0.0
     */
    public static function createSampleRestrictions(int $count = 10): array
    {
        $restrictions = [];
        $types = ['hide_doctor', 'hide_service', 'hide_combination'];
        
        for ($i = 1; $i <= $count; $i++) {
            $type = $types[($i - 1) % 3];
            
            $restriction = [
                'id' => $i,
                'doctor_id' => ($i % 20) + 1,
                'service_id' => $type === 'hide_doctor' ? null : (($i % 10) + 1),
                'restriction_type' => $type,
                'is_active' => ($i % 4) !== 0, // 75% active
                'created_at' => date('Y-m-d H:i:s', time() - ($i * 3600)),
                'updated_at' => date('Y-m-d H:i:s', time() - ($i * 1800)),
                'created_by' => 1,
                'metadata' => json_encode(['test' => true, 'order' => $i])
            ];
            
            DatabaseMock::insert('wp_care_booking_restrictions', $restriction);
            $restrictions[] = $restriction;
        }
        
        return $restrictions;
    }
    
    /**
     * Assert CSS selector matches expected pattern
     * 
     * @param string $expectedPattern
     * @param string $actualSelector
     * @param string $message
     * @return void
     * @since 1.0.0
     */
    public static function assertCssSelectorMatches(string $expectedPattern, string $actualSelector, string $message = ''): void
    {
        $pattern = '/^' . str_replace(['[', ']', '"'], ['\[', '\]', '\"'], $expectedPattern) . '$/';
        
        if (!preg_match($pattern, $actualSelector)) {
            $message = $message ?: "CSS selector '{$actualSelector}' does not match expected pattern '{$expectedPattern}'";
            throw new \PHPUnit\Framework\AssertionFailedError($message);
        }
    }
    
    /**
     * Assert HTML contains specific data attributes
     * 
     * @param string $html
     * @param array<string, string> $expectedAttributes
     * @param string $message
     * @return void
     * @since 1.0.0
     */
    public static function assertHtmlContainsDataAttributes(string $html, array $expectedAttributes, string $message = ''): void
    {
        foreach ($expectedAttributes as $attribute => $value) {
            $pattern = '/data-' . preg_quote($attribute, '/') . '=["\']' . preg_quote($value, '/') . '["\']/';
            
            if (!preg_match($pattern, $html)) {
                $message = $message ?: "HTML does not contain expected data attribute: data-{$attribute}=\"{$value}\"";
                throw new \PHPUnit\Framework\AssertionFailedError($message);
            }
        }
    }
    
    /**
     * Generate performance test data
     * 
     * @param int $doctorCount
     * @param int $serviceCount
     * @param int $restrictionCount
     * @return array<string, int>
     * @since 1.0.0
     */
    public static function generatePerformanceTestData(int $doctorCount = 100, int $serviceCount = 50, int $restrictionCount = 500): array
    {
        // Add doctors to KiviCare mock
        for ($i = 1; $i <= $doctorCount; $i++) {
            KiviCareMock::addMockDoctor($i, [
                'display_name' => "Dr. Test {$i}",
                'specialty' => 'Specialty ' . (($i % 10) + 1)
            ]);
        }
        
        // Add services to KiviCare mock
        for ($i = 1; $i <= $serviceCount; $i++) {
            KiviCareMock::addMockService($i, [
                'name' => "Service {$i}",
                'duration' => [15, 30, 45, 60][($i % 4)]
            ]);
        }
        
        // Add restrictions to database
        for ($i = 1; $i <= $restrictionCount; $i++) {
            $type = ['hide_doctor', 'hide_service', 'hide_combination'][($i % 3)];
            
            DatabaseMock::insert('wp_care_booking_restrictions', [
                'doctor_id' => ($i % $doctorCount) + 1,
                'service_id' => $type === 'hide_doctor' ? null : (($i % $serviceCount) + 1),
                'restriction_type' => $type,
                'is_active' => ($i % 5) !== 0, // 80% active
                'created_at' => date('Y-m-d H:i:s', time() - ($i * 60)),
                'created_by' => 1
            ]);
        }
        
        return [
            'doctors' => $doctorCount,
            'services' => $serviceCount,
            'restrictions' => $restrictionCount
        ];
    }
    
    /**
     * Measure execution time of a callback
     * 
     * @param callable $callback
     * @return array{result: mixed, time: float} Result and time in milliseconds
     * @since 1.0.0
     */
    public static function measureExecutionTime(callable $callback): array
    {
        $startTime = microtime(true);
        $result = $callback();
        $endTime = microtime(true);
        
        return [
            'result' => $result,
            'time' => ($endTime - $startTime) * 1000 // Convert to milliseconds
        ];
    }
    
    /**
     * Assert execution time is within acceptable limits
     * 
     * @param callable $callback
     * @param float $maxTimeMs Maximum time in milliseconds
     * @param string $operation Description of operation being timed
     * @return mixed Result of the callback
     * @since 1.0.0
     */
    public static function assertExecutionTimeWithin(callable $callback, float $maxTimeMs, string $operation = 'Operation'): mixed
    {
        $measurement = self::measureExecutionTime($callback);
        
        if ($measurement['time'] > $maxTimeMs) {
            throw new \PHPUnit\Framework\AssertionFailedError(
                "{$operation} took {$measurement['time']}ms, expected less than {$maxTimeMs}ms"
            );
        }
        
        return $measurement['result'];
    }
    
    /**
     * Create mock AJAX request data
     * 
     * @param string $action
     * @param array $data
     * @return array
     * @since 1.0.0
     */
    public static function createMockAjaxRequest(string $action, array $data = []): array
    {
        return array_merge([
            'action' => $action,
            '_ajax_nonce' => WordPressMock::wp_create_nonce($action)
        ], $data);
    }
    
    /**
     * Simulate WordPress AJAX response
     * 
     * @param bool $success
     * @param mixed $data
     * @param string $message
     * @return array
     * @since 1.0.0
     */
    public static function createAjaxResponse(bool $success, mixed $data = null, string $message = ''): array
    {
        return [
            'success' => $success,
            'data' => $data,
            'message' => $message
        ];
    }
    
    /**
     * Validate JSON response structure
     * 
     * @param string $json
     * @param array<string> $requiredKeys
     * @return array Decoded JSON data
     * @throws \PHPUnit\Framework\AssertionFailedError
     * @since 1.0.0
     */
    public static function validateJsonResponse(string $json, array $requiredKeys = ['success']): array
    {
        $data = json_decode($json, true);
        
        if (json_last_error() !== JSON_ERROR_NONE) {
            throw new \PHPUnit\Framework\AssertionFailedError('Invalid JSON response: ' . json_last_error_msg());
        }
        
        foreach ($requiredKeys as $key) {
            if (!array_key_exists($key, $data)) {
                throw new \PHPUnit\Framework\AssertionFailedError("JSON response missing required key: {$key}");
            }
        }
        
        return $data;
    }
    
    /**
     * Create temporary file for testing
     * 
     * @param string $content
     * @param string $extension
     * @return string Temporary file path
     * @since 1.0.0
     */
    public static function createTempFile(string $content = '', string $extension = 'tmp'): string
    {
        $tempFile = tempnam(sys_get_temp_dir(), 'care_booking_test_') . '.' . $extension;
        file_put_contents($tempFile, $content);
        
        return $tempFile;
    }
    
    /**
     * Clean up temporary files created during testing
     * 
     * @param array<string> $files
     * @return void
     * @since 1.0.0
     */
    public static function cleanupTempFiles(array $files): void
    {
        foreach ($files as $file) {
            if (file_exists($file)) {
                unlink($file);
            }
        }
    }
    
    /**
     * Assert array has expected structure
     * 
     * @param array $expectedStructure
     * @param array $actualArray
     * @param string $message
     * @return void
     * @since 1.0.0
     */
    public static function assertArrayStructure(array $expectedStructure, array $actualArray, string $message = ''): void
    {
        foreach ($expectedStructure as $key => $expectedType) {
            if (!array_key_exists($key, $actualArray)) {
                $message = $message ?: "Array missing expected key: {$key}";
                throw new \PHPUnit\Framework\AssertionFailedError($message);
            }
            
            if (is_string($expectedType)) {
                $actualType = gettype($actualArray[$key]);
                if ($actualType !== $expectedType) {
                    $message = $message ?: "Array key '{$key}' expected type {$expectedType}, got {$actualType}";
                    throw new \PHPUnit\Framework\AssertionFailedError($message);
                }
            }
        }
    }
    
    /**
     * Generate random test data
     * 
     * @param string $type Type of data to generate
     * @param int $count Number of items to generate
     * @return array
     * @since 1.0.0
     */
    public static function generateRandomTestData(string $type, int $count = 1): array
    {
        $data = [];
        
        for ($i = 0; $i < $count; $i++) {
            switch ($type) {
                case 'doctor':
                    $data[] = [
                        'id' => mt_rand(1, 9999),
                        'display_name' => 'Dr. ' . self::randomString(8),
                        'specialty' => self::randomString(12),
                        'email' => strtolower(self::randomString(8)) . '@example.com'
                    ];
                    break;
                    
                case 'service':
                    $data[] = [
                        'id' => mt_rand(1, 9999),
                        'name' => self::randomString(15) . ' Service',
                        'duration' => [15, 30, 45, 60][mt_rand(0, 3)],
                        'price' => mt_rand(25, 200) . '.00'
                    ];
                    break;
                    
                case 'restriction':
                    $types = ['hide_doctor', 'hide_service', 'hide_combination'];
                    $data[] = [
                        'doctor_id' => mt_rand(1, 100),
                        'service_id' => mt_rand(0, 1) ? mt_rand(1, 50) : null,
                        'restriction_type' => $types[mt_rand(0, 2)],
                        'is_active' => mt_rand(0, 1) === 1
                    ];
                    break;
            }
        }
        
        return $count === 1 ? $data[0] : $data;
    }
    
    /**
     * Generate random string
     * 
     * @param int $length
     * @return string
     * @since 1.0.0
     */
    private static function randomString(int $length): string
    {
        $characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
        $randomString = '';
        
        for ($i = 0; $i < $length; $i++) {
            $randomString .= $characters[mt_rand(0, strlen($characters) - 1)];
        }
        
        return $randomString;
    }
}