/**
 * @fileoverview HTTP mocking utilities for Laravel Healthcare MCP Server tests
 * Provides comprehensive mocking for axios requests and API responses
 */

import { jest } from '@jest/globals';

/**
 * HTTP Mock Manager for handling axios mocks
 */
export class HttpMockManager {
  constructor() {
    this.mocks = new Map();
    this.defaultResponses = new Map();
    this.requestHistory = [];
  }

  /**
   * Create a mock axios instance
   * @returns {Object} Mock axios instance
   */
  createMockAxios() {
    const mockAxios = {
      get: jest.fn(),
      post: jest.fn(),
      put: jest.fn(),
      patch: jest.fn(),
      delete: jest.fn(),
      request: jest.fn(),
      defaults: {
        headers: {
          common: {},
          get: {},
          post: {},
          put: {},
          patch: {},
          delete: {}
        },
        timeout: 5000,
        baseURL: ''
      },
      interceptors: {
        request: {
          use: jest.fn(),
          eject: jest.fn()
        },
        response: {
          use: jest.fn(),
          eject: jest.fn()
        }
      }
    };

    // Track all requests
    const trackRequest = (method, url, config = {}) => {
      this.requestHistory.push({
        method: method.toUpperCase(),
        url,
        config,
        timestamp: new Date().toISOString()
      });
    };

    // Setup method implementations
    mockAxios.get.mockImplementation((url, config) => {
      trackRequest('GET', url, config);
      return this.handleRequest('GET', url, config);
    });

    mockAxios.post.mockImplementation((url, data, config) => {
      trackRequest('POST', url, { ...config, data });
      return this.handleRequest('POST', url, { ...config, data });
    });

    mockAxios.put.mockImplementation((url, data, config) => {
      trackRequest('PUT', url, { ...config, data });
      return this.handleRequest('PUT', url, { ...config, data });
    });

    mockAxios.patch.mockImplementation((url, data, config) => {
      trackRequest('PATCH', url, { ...config, data });
      return this.handleRequest('PATCH', url, { ...config, data });
    });

    mockAxios.delete.mockImplementation((url, config) => {
      trackRequest('DELETE', url, config);
      return this.handleRequest('DELETE', url, config);
    });

    return mockAxios;
  }

  /**
   * Handle HTTP request and return appropriate mock response
   * @param {string} method - HTTP method
   * @param {string} url - Request URL
   * @param {Object} config - Request configuration
   * @returns {Promise} Promise resolving to mock response
   */
  async handleRequest(method, url, config = {}) {
    const key = `${method}:${url}`;
    
    // Check for specific mock
    if (this.mocks.has(key)) {
      const mockConfig = this.mocks.get(key);
      
      if (mockConfig.shouldFail) {
        throw mockConfig.error || new Error(`Mock error for ${key}`);
      }
      
      return mockConfig.response;
    }

    // Check for default response
    if (this.defaultResponses.has(method)) {
      return this.defaultResponses.get(method);
    }

    // Default success response
    return {
      status: 200,
      statusText: 'OK',
      data: { success: true, message: 'Mock response' },
      headers: { 'content-type': 'application/json' }
    };
  }

  /**
   * Mock a specific HTTP request
   * @param {string} method - HTTP method
   * @param {string} url - Request URL
   * @param {Object} response - Mock response
   * @param {boolean} shouldFail - Whether the request should fail
   * @param {Error} error - Error to throw if shouldFail is true
   */
  mockRequest(method, url, response, shouldFail = false, error = null) {
    const key = `${method.toUpperCase()}:${url}`;
    this.mocks.set(key, {
      response,
      shouldFail,
      error
    });
  }

  /**
   * Mock authentication login requests
   * @param {string} authType - Authentication type
   * @param {boolean} shouldSucceed - Whether login should succeed
   */
  mockAuthLogin(authType, shouldSucceed = true) {
    const endpoints = {
      public: '/api/login',
      provider: '/api/login',
      patient: '/api/frontend/login',
      partner: '/api/login-partner-api',
      affiliate: '/api/affiliate-login-api',
      network: '/api/network/login'
    };

    const endpoint = endpoints[authType] || '/api/login';
    
    if (shouldSucceed) {
      this.mockRequest('POST', endpoint, {
        status: 200,
        data: {
          success: true,
          token: `mock_${authType}_token_${Date.now()}`,
          user: {
            id: `mock_${authType}_user_123`,
            email: `test@${authType}.example.com`,
            role: authType
          }
        }
      });
    } else {
      this.mockRequest('POST', endpoint, null, true, {
        response: {
          status: 401,
          data: { error: 'Invalid credentials' }
        }
      });
    }
  }

  /**
   * Mock healthcare data endpoints
   */
  mockHealthcareEndpoints() {
    // Patient data endpoints
    this.mockRequest('GET', '/api/emr/patients', {
      status: 200,
      data: {
        patients: [
          global.testUtils.createMockPatientData(),
          { ...global.testUtils.createMockPatientData(), id: 'test-patient-456' }
        ]
      }
    });

    this.mockRequest('POST', '/api/emr/patients', {
      status: 201,
      data: {
        success: true,
        patient: global.testUtils.createMockPatientData()
      }
    });

    // Provider data endpoints
    this.mockRequest('GET', '/api/emr/providers', {
      status: 200,
      data: {
        providers: [
          global.testUtils.createMockProviderData(),
          { ...global.testUtils.createMockProviderData(), id: 'test-provider-789' }
        ]
      }
    });

    // Prescription endpoints
    this.mockRequest('GET', '/api/emr/prescriptions', {
      status: 200,
      data: {
        prescriptions: [
          global.testUtils.createMockPrescriptionData()
        ]
      }
    });

    this.mockRequest('POST', '/api/emr/prescriptions', {
      status: 201,
      data: {
        success: true,
        prescription: global.testUtils.createMockPrescriptionData()
      }
    });

    // Appointment endpoints
    this.mockRequest('GET', '/api/emr/appointments', {
      status: 200,
      data: {
        appointments: [
          global.testUtils.createMockAppointmentData()
        ]
      }
    });
  }

  /**
   * Get request history
   * @returns {Array} Array of request objects
   */
  getRequestHistory() {
    return [...this.requestHistory];
  }

  /**
   * Clear request history
   */
  clearHistory() {
    this.requestHistory = [];
  }

  /**
   * Reset all mocks
   */
  reset() {
    this.mocks.clear();
    this.defaultResponses.clear();
    this.requestHistory = [];
  }

  /**
   * Set default response for a method
   * @param {string} method - HTTP method
   * @param {Object} response - Default response
   */
  setDefaultResponse(method, response) {
    this.defaultResponses.set(method.toUpperCase(), response);
  }
}

// Export singleton instance
export const httpMockManager = new HttpMockManager();