// Rating API endpoints for SweetHome
// Handles both customer ratings and property ratings

import AuthService from '../services/AuthService';

const API_BASE = process.env.NEXT_PUBLIC_API_URL || 'https://45.93.137.91.nip.io/api';

/**
 * Rate a property as a customer
 * @param {Object} data - Rating data
 * @param {number} data.propertyId - ID of the property being rated
 * @param {number} data.customerId - ID of the customer doing the rating
 * @param {number} data.rating - Rating value (1-5)
 * @param {string} data.comment - Optional comment
 * @returns {Promise} - API response
 */
export async function rateProperty(data) {
  console.log('[Rating] Customer rating property:', data);
  return apiFetch('/Ratings/CustomerRateProperty', {
    method: 'POST',
    body: JSON.stringify(data),
  });
}

/**
 * Rate a customer as a property owner
 * @param {Object} data - Rating data
 * @param {number} data.propertyId - ID of the property
 * @param {number} data.customerId - ID of the customer being rated
 * @param {number} data.rating - Rating value (1-5)
 * @param {string} data.comment - Optional comment
 * @returns {Promise} - API response
 */
export async function rateCustomer(data) {
  console.log('[Rating] Property owner rating customer:', data);
  return apiFetch('/Ratings/PropertyRateCustomer', {
    method: 'POST',
    body: JSON.stringify(data),
  });
}

/**
 * Get all ratings for a property
 * @param {number} propertyId - ID of the property
 * @returns {Promise} - Array of ratings
 */
export async function getPropertyRatings(propertyId) {
  console.log('[Rating] Fetching property ratings for:', propertyId);
  return apiFetch(`/Ratings/GetPropertyRatings?propertyId=${propertyId}`);
}

/**
 * Get all ratings for a customer
 * @param {number} customerId - ID of the customer
 * @returns {Promise} - Array of ratings
 */
export async function getCustomerRatings(customerId) {
  console.log('[Rating] Fetching customer ratings for:', customerId);
  return apiFetch(`/Ratings/GetCustomerRatings?customerId=${customerId}`);
}

/**
 * Get average rating for a property
 * @param {number} propertyId - ID of the property
 * @returns {Promise} - Average rating
 */
export async function getPropertyAverageRating(propertyId) {
  console.log('[Rating] Fetching average rating for property:', propertyId);
  const ratings = await getPropertyRatings(propertyId);
  if (!Array.isArray(ratings) || ratings.length === 0) return 0;
  
  const total = ratings.reduce((sum, rating) => sum + rating.rating, 0);
  return Math.round((total / ratings.length) * 10) / 10; // Round to 1 decimal
}

/**
 * Get average rating for a customer
 * @param {number} customerId - ID of the customer
 * @returns {Promise} - Average rating
 */
export async function getCustomerAverageRating(customerId) {
  console.log('[Rating] Fetching average rating for customer:', customerId);
  const ratings = await getCustomerRatings(customerId);
  if (!Array.isArray(ratings) || ratings.length === 0) return 0;
  
  const total = ratings.reduce((sum, rating) => sum + rating.rating, 0);
  return Math.round((total / ratings.length) * 10) / 10; // Round to 1 decimal
}

/**
 * Get user's rating for a specific property (if any)
 * @param {number} propertyId - ID of the property
 * @param {number} userId - ID of the user
 * @returns {Promise} - User's rating or null
 */
export async function getUserPropertyRating(propertyId, userId) {
  console.log('[Rating] Fetching user rating for property:', propertyId, 'user:', userId);
  const allRatings = await getPropertyRatings(propertyId);
  if (!Array.isArray(allRatings)) return null;
  
  return allRatings.find(r => r.userId === userId) || null;
}

/**
 * Get user's rating for a specific customer (if any)
 * @param {number} customerId - ID of the customer
 * @param {number} userId - ID of the user
 * @returns {Promise} - User's rating or null
 */
export async function getUserCustomerRating(customerId, userId) {
  console.log('[Rating] Fetching user rating for customer:', customerId, 'user:', userId);
  const allRatings = await getCustomerRatings(customerId);
  if (!Array.isArray(allRatings)) return null;
  
  return allRatings.find(r => r.userId === userId) || null;
}

/**
 * Check if user can rate a property (after renting)
 * @param {number} propertyId - ID of the property
 * @param {number} userId - ID of the user
 * @returns {Promise} - Boolean indicating if rating is allowed
 */
export async function canRateProperty(propertyId, userId) {
  console.log('[Rating] Checking if user can rate property:', propertyId, 'user:', userId);
  
  // Logic: User can rate if they have completed a rental in the past
  // This would typically check reservation history
  // For now, we'll simulate this with a simple check
  
  // In a real implementation, this would check:
  // 1. User's reservation history for this property
  // 2. Whether the rental period has ended
  // 3. Whether they've already rated
  
  const userRating = await getUserPropertyRating(propertyId, userId);
  return !userRating; // Can rate if no existing rating
}

/**
 * Check if user can rate a customer (after renting to them)
 * @param {number} customerId - ID of the customer
 * @param {number} userId - ID of the user (owner)
 * @returns {Promise} - Boolean indicating if rating is allowed
 */
export async function canRateCustomer(customerId, userId) {
  console.log('[Rating] Checking if user can rate customer:', customerId, 'user:', userId);
  
  // Logic: Owner can rate if they have rented to this customer
  // This would typically check reservation history
  
  const userRating = await getUserCustomerRating(customerId, userId);
  return !userRating; // Can rate if no existing rating
}

// Helper function for API calls
async function apiFetch(endpoint, options = {}) {
  const token = AuthService.getToken();

  const headers = {
    'Content-Type': 'application/json',
    ...(token && { Authorization: `Bearer ${token}` }),
    ...options.headers,
  };

  console.log('[Rating API] Request:', options.method || 'GET', `${API_BASE}${endpoint}`);

  const res = await fetch(`${API_BASE}${endpoint}`, {
    ...options,
    headers,
  });

  console.log('[Rating API] Response:', res.status, endpoint);

  if (!res.ok && res.status !== 206) {
    const text = await res.text().catch(() => '');
    console.error('[Rating API] Error:', res.status, text);
    throw new Error(`Rating API ${res.status}: ${text || res.statusText}`);
  }

  const text = await res.text();
  if (!text) return null;

  try {
    const json = JSON.parse(text);
    if (json && typeof json === 'object' && 'data' in json) {
      return json.data;
    }
    return json;
  } catch {
    return text;
  }
}