/*
 * File: signupAPI.ts
 * Description: Signup API service with validation and hospital endpoints
 * Design & Developed by Tech4Biz Solutions
 * Copyright (c) Spurrin Innovations. All rights reserved.
 */

import { create } from 'apisauce';
import { SignUpData, EmailValidationApiResponse, UsernameValidationApiResponse, HospitalListApiResponse, SignUpApiResponse } from '../types/signup';

// ============================================================================
// API CONFIGURATION
// ============================================================================

/**
 * API Base Configuration
 * 
 * Purpose: Configure the base API client for signup operations
 * 
 * Features:
 * - Base URL configuration
 * - Request/response interceptors
 * - Error handling
 * - Timeout settings
 */
const API_BASE_URL = 'https://api.neoscan-physician.com/v1'; // TODO: Replace with actual API URL

const api = create({
  baseURL: API_BASE_URL,
  headers: {
    'Content-Type': 'application/json',
    'Accept': 'application/json',
  },
  timeout: 30000, // 30 seconds
});

// ============================================================================
// REQUEST INTERCEPTORS
// ============================================================================

/**
 * Request Interceptor
 * 
 * Purpose: Add authentication headers and logging
 */
api.addRequestTransform((request) => {
  // Add any common headers here
  console.log('API Request:', {
    method: request.method,
    url: request.url,
    data: request.data,
  });
});

// ============================================================================
// RESPONSE INTERCEPTORS
// ============================================================================

/**
 * Response Interceptor
 * 
 * Purpose: Handle common response patterns and errors
 */
api.addResponseTransform((response) => {
  console.log('API Response:', {
    status: response.status,
    url: response.config?.url,
    data: response.data,
  });

  // Handle common error patterns
  if (response.status === 401) {
    // Handle unauthorized access
    console.error('Unauthorized access');
  }

  if (response.status === 500) {
    // Handle server errors
    console.error('Server error occurred');
  }
});

// ============================================================================
// EMAIL VALIDATION API
// ============================================================================

/**
 * Validate Email
 * 
 * Purpose: Check if email is available for registration
 * 
 * @param email - Email address to validate
 * @returns Promise with validation result
 */
export const validatemail = async (email: string): Promise<EmailValidationApiResponse> => {
  try {
    const response = await api.post<EmailValidationApiResponse>('/auth/validate-email', {
      email,
    });

    if (response.ok && response.data) {
      return response.data;
    } else {
      throw new Error(response.problem || 'Failed to validate email');
    }
  } catch (error) {
    console.error('Email validation error:', error);
    throw error;
  }
};

// ============================================================================
// USERNAME VALIDATION API
// ============================================================================

/**
 * Validate Username
 * 
 * Purpose: Check if username is available for registration
 * 
 * @param username - Username to validate
 * @returns Promise with validation result
 */
export const validateusername = async (username: string): Promise<UsernameValidationApiResponse> => {
  try {
    const response = await api.post<UsernameValidationApiResponse>('/auth/validate-username', {
      username,
    });

    if (response.ok && response.data) {
      return response.data;
    } else {
      throw new Error(response.problem || 'Failed to validate username');
    }
  } catch (error) {
    console.error('Username validation error:', error);
    throw error;
  }
};

// ============================================================================
// HOSPITAL API
// ============================================================================

/**
 * Get Hospitals List
 * 
 * Purpose: Fetch list of available hospitals
 * 
 * @param params - Query parameters for filtering
 * @returns Promise with hospital list
 */
export const gethospitals = async (params?: {
  page?: number;
  limit?: number;
  search?: string;
  type?: string;
  city?: string;
  state?: string;
}): Promise<HospitalListApiResponse> => {
  try {
    const response = await api.get<HospitalListApiResponse>('/hospitals', params);

    if (response.ok && response.data) {
      return response.data;
    } else {
      throw new Error(response.problem || 'Failed to fetch hospitals');
    }
  } catch (error) {
    console.error('Get hospitals error:', error);
    throw error;
  }
};

/**
 * Get Hospital by ID
 * 
 * Purpose: Fetch specific hospital details
 * 
 * @param hospitalId - Hospital ID
 * @returns Promise with hospital details
 */
export const getHospitalById = async (hospitalId: string) => {
  try {
    const response = await api.get(`/hospitals/${hospitalId}`);

    if (response.ok && response.data) {
      return response.data;
    } else {
      throw new Error(response.problem || 'Failed to fetch hospital details');
    }
  } catch (error) {
    console.error('Get hospital by ID error:', error);
    throw error;
  }
};

// ============================================================================
// SIGNUP API
// ============================================================================

/**
 * Complete Signup
 * 
 * Purpose: Submit complete signup data
 * 
 * @param formData - FormData with signup information
 * @returns Promise with signup result
 */
export const signup = async (formData: FormData): Promise<SignUpApiResponse> => {
  try {
    const response = await api.post<SignUpApiResponse>('/auth/signup', formData, {
      headers: {
        'Content-Type': 'multipart/form-data',
      },
    });
console.log('actual response ',response)
    if (response.ok && response.data) {
      return response.data;
    } else {
      throw new Error(response.problem || 'Failed to complete signup');
    }
  } catch (error) {
    console.error('Complete signup error:', error);
    throw error;
  }
};

// ============================================================================
// MOCK API FUNCTIONS (FOR DEVELOPMENT)
// ============================================================================

/**
 * Mock Validate Email
 * 
 * Purpose: Mock email validation for development
 * 
 * @param email - Email address to validate
 * @returns Promise with mock validation result
 */
export const mockValidatemail = async (email: string): Promise<EmailValidationApiResponse> => {
  // Simulate API delay
  await new Promise(resolve => setTimeout(resolve, 1000));

  // Mock validation logic
  const isAvailable = email !== 'existing@hospital.com';
  
  return {
    success: true,
    isAvailable,
    message: isAvailable ? 'Email is available' : 'Email is already registered',
    suggestions: isAvailable ? undefined : ['Try a different email address'],
  };
};

/**
 * Mock Validate Username
 * 
 * Purpose: Mock username validation for development
 * 
 * @param username - Username to validate
 * @returns Promise with mock validation result
 */
export const mockValidateusername = async (username: string): Promise<UsernameValidationApiResponse> => {
  // Simulate API delay
  await new Promise(resolve => setTimeout(resolve, 800));

  // Mock validation logic
  const isAvailable = username !== 'existinguser';
  
  return {
    success: true,
    isAvailable,
    message: isAvailable ? 'Username is available' : 'Username is already taken',
    suggestions: isAvailable ? undefined : ['Try adding numbers or special characters'],
  };
};

/**
 * Mock Get Hospitals
 * 
 * Purpose: Mock hospital list for development
 * 
 * @returns Promise with mock hospital list
 */
export const mockGethospitals = async (): Promise<HospitalListApiResponse> => {
  // Simulate API delay
  await new Promise(resolve => setTimeout(resolve, 1500));

  // Mock hospital data
  const mockHospitals = [
    {
      id: '1',
      name: 'General Hospital',
      address: '123 Main Street',
      city: 'New York',
      state: 'NY',
      country: 'USA',
      phoneNumber: '+1-555-0123',
      email: 'info@generalhospital.com',
      website: 'https://generalhospital.com',
      type: 'GENERAL' as const,
      specialties: ['Emergency Medicine', 'Cardiology', 'Neurology'],
      isActive: true,
    },
    {
      id: '2',
      name: 'University Medical Center',
      address: '456 University Ave',
      city: 'Boston',
      state: 'MA',
      country: 'USA',
      phoneNumber: '+1-555-0456',
      email: 'info@umc.edu',
      website: 'https://umc.edu',
      type: 'UNIVERSITY' as const,
      specialties: ['Emergency Medicine', 'Trauma', 'Research'],
      isActive: true,
    },
    {
      id: '3',
      name: 'Specialty Medical Center',
      address: '789 Specialty Blvd',
      city: 'Los Angeles',
      state: 'CA',
      country: 'USA',
      phoneNumber: '+1-555-0789',
      email: 'info@specialtycenter.com',
      website: 'https://specialtycenter.com',
      type: 'SPECIALTY' as const,
      specialties: ['Cardiology', 'Neurology', 'Oncology'],
      isActive: true,
    },
  ];

  return {
    success: true,
    data: mockHospitals,
    total: mockHospitals.length,
    page: 1,
    limit: 10,
  };
};

/**
 * Mock Complete Signup
 * 
 * Purpose: Mock signup completion for development
 * 
 * @param signUpData - Complete signup data
 * @returns Promise with mock signup result
 */
export const mockSignup = async (signUpData: SignUpData): Promise<SignUpApiResponse> => {
  // Simulate API delay
  await new Promise(resolve => setTimeout(resolve, 2000));

  // Mock successful signup
  return {
    success: true,
    message: 'Account created successfully',
    data: {
      userId: 'user_' + Date.now(),
      email: signUpData.email,
      token: 'mock_token_' + Date.now(),
    },
  };
};

// ============================================================================
// EXPORTS
// ============================================================================

export const authAPI = {
  // Real API functions
  validatemail,
  validateusername,
  gethospitals,
  getHospitalById,
  signup,
  
  // Mock API functions (for development)
  mockValidatemail,
  mockValidateusername,
  mockGethospitals,
  mockSignup,
};

/*
 * End of File: signupAPI.ts
 * Design & Developed by Tech4Biz Solutions
 * Copyright (c) Spurrin Innovations. All rights reserved.
 */