/**
 * Consumer API Client for Findagram
 *
 * Handles authenticated requests for:
 * - Favorites
 * - Price Alerts
 * - Saved Searches
 *
 * All methods require auth token (use with AuthContext's authFetch)
 */

// ============================================================
// FAVORITES
// ============================================================

/**
 * Get all user's favorites
 * @param {Function} authFetch - Authenticated fetch from AuthContext
 */
export async function getFavorites(authFetch) {
  return authFetch('/api/consumer/favorites');
}

/**
 * Add product to favorites
 * @param {Function} authFetch
 * @param {number} productId
 * @param {number} [dispensaryId] - Optional dispensary context
 */
export async function addFavorite(authFetch, productId, dispensaryId = null) {
  return authFetch('/api/consumer/favorites', {
    method: 'POST',
    body: JSON.stringify({ productId, dispensaryId }),
  });
}

/**
 * Remove favorite by favorite ID
 * @param {Function} authFetch
 * @param {number} favoriteId
 */
export async function removeFavorite(authFetch, favoriteId) {
  return authFetch(`/api/consumer/favorites/${favoriteId}`, {
    method: 'DELETE',
  });
}

/**
 * Remove favorite by product ID
 * @param {Function} authFetch
 * @param {number} productId
 */
export async function removeFavoriteByProduct(authFetch, productId) {
  return authFetch(`/api/consumer/favorites/product/${productId}`, {
    method: 'DELETE',
  });
}

/**
 * Check if product is favorited
 * @param {Function} authFetch
 * @param {number} productId
 * @returns {Promise<{isFavorited: boolean}>}
 */
export async function checkFavorite(authFetch, productId) {
  return authFetch(`/api/consumer/favorites/check/product/${productId}`);
}

// ============================================================
// ALERTS
// ============================================================

/**
 * Get all user's alerts
 * @param {Function} authFetch
 */
export async function getAlerts(authFetch) {
  return authFetch('/api/consumer/alerts');
}

/**
 * Get alert statistics
 * @param {Function} authFetch
 */
export async function getAlertStats(authFetch) {
  return authFetch('/api/consumer/alerts/stats');
}

/**
 * Create a price drop alert
 * @param {Function} authFetch
 * @param {Object} params
 * @param {number} params.productId - Product to track
 * @param {number} params.targetPrice - Price to alert at
 * @param {number} [params.dispensaryId] - Optional dispensary context
 */
export async function createPriceAlert(authFetch, { productId, targetPrice, dispensaryId }) {
  return authFetch('/api/consumer/alerts', {
    method: 'POST',
    body: JSON.stringify({
      alertType: 'price_drop',
      productId,
      targetPrice,
      dispensaryId,
    }),
  });
}

/**
 * Create a back-in-stock alert
 * @param {Function} authFetch
 * @param {Object} params
 * @param {number} params.productId - Product to track
 * @param {number} [params.dispensaryId] - Optional dispensary context
 */
export async function createStockAlert(authFetch, { productId, dispensaryId }) {
  return authFetch('/api/consumer/alerts', {
    method: 'POST',
    body: JSON.stringify({
      alertType: 'back_in_stock',
      productId,
      dispensaryId,
    }),
  });
}

/**
 * Create a brand/category alert
 * @param {Function} authFetch
 * @param {Object} params
 * @param {string} [params.brand] - Brand to track
 * @param {string} [params.category] - Category to track
 */
export async function createBrandCategoryAlert(authFetch, { brand, category }) {
  return authFetch('/api/consumer/alerts', {
    method: 'POST',
    body: JSON.stringify({
      alertType: 'product_on_special',
      brand,
      category,
    }),
  });
}

/**
 * Update an alert
 * @param {Function} authFetch
 * @param {number} alertId
 * @param {Object} updates
 * @param {boolean} [updates.isActive]
 * @param {number} [updates.targetPrice]
 */
export async function updateAlert(authFetch, alertId, updates) {
  return authFetch(`/api/consumer/alerts/${alertId}`, {
    method: 'PUT',
    body: JSON.stringify(updates),
  });
}

/**
 * Toggle alert active status
 * @param {Function} authFetch
 * @param {number} alertId
 */
export async function toggleAlert(authFetch, alertId) {
  return authFetch(`/api/consumer/alerts/${alertId}/toggle`, {
    method: 'POST',
  });
}

/**
 * Delete an alert
 * @param {Function} authFetch
 * @param {number} alertId
 */
export async function deleteAlert(authFetch, alertId) {
  return authFetch(`/api/consumer/alerts/${alertId}`, {
    method: 'DELETE',
  });
}

// ============================================================
// SAVED SEARCHES
// ============================================================

/**
 * Get all user's saved searches
 * @param {Function} authFetch
 */
export async function getSavedSearches(authFetch) {
  return authFetch('/api/consumer/saved-searches');
}

/**
 * Create a saved search
 * @param {Function} authFetch
 * @param {Object} params
 * @param {string} params.name - Display name
 * @param {string} [params.query] - Search query
 * @param {string} [params.category] - Category filter
 * @param {string} [params.brand] - Brand filter
 * @param {string} [params.strainType] - Strain type filter
 * @param {number} [params.minPrice] - Min price filter
 * @param {number} [params.maxPrice] - Max price filter
 * @param {number} [params.minThc] - Min THC filter
 * @param {number} [params.maxThc] - Max THC filter
 * @param {boolean} [params.notifyOnNew] - Notify on new products
 * @param {boolean} [params.notifyOnPriceDrop] - Notify on price drops
 */
export async function createSavedSearch(authFetch, params) {
  return authFetch('/api/consumer/saved-searches', {
    method: 'POST',
    body: JSON.stringify(params),
  });
}

/**
 * Update a saved search
 * @param {Function} authFetch
 * @param {number} searchId
 * @param {Object} updates
 */
export async function updateSavedSearch(authFetch, searchId, updates) {
  return authFetch(`/api/consumer/saved-searches/${searchId}`, {
    method: 'PUT',
    body: JSON.stringify(updates),
  });
}

/**
 * Delete a saved search
 * @param {Function} authFetch
 * @param {number} searchId
 */
export async function deleteSavedSearch(authFetch, searchId) {
  return authFetch(`/api/consumer/saved-searches/${searchId}`, {
    method: 'DELETE',
  });
}

/**
 * Run a saved search (get search params)
 * @param {Function} authFetch
 * @param {number} searchId
 * @returns {Promise<{searchParams: Object, searchUrl: string}>}
 */
export async function runSavedSearch(authFetch, searchId) {
  return authFetch(`/api/consumer/saved-searches/${searchId}/run`, {
    method: 'POST',
  });
}

// ============================================================
// HELPER: Generate search name from filters
// ============================================================

/**
 * Generate a display name for a search based on filters
 * @param {Object} filters
 * @returns {string}
 */
export function generateSearchName(filters) {
  const parts = [];

  if (filters.query || filters.search) parts.push(`"${filters.query || filters.search}"`);
  if (filters.category || filters.type) parts.push(filters.category || filters.type);
  if (filters.brand || filters.brandName) parts.push(filters.brand || filters.brandName);
  if (filters.strainType) parts.push(filters.strainType);
  if (filters.maxPrice) parts.push(`Under $${filters.maxPrice}`);
  if (filters.minThc) parts.push(`${filters.minThc}%+ THC`);

  return parts.length > 0 ? parts.join(' - ') : 'All Products';
}

// Default export
const consumerApi = {
  // Favorites
  getFavorites,
  addFavorite,
  removeFavorite,
  removeFavoriteByProduct,
  checkFavorite,
  // Alerts
  getAlerts,
  getAlertStats,
  createPriceAlert,
  createStockAlert,
  createBrandCategoryAlert,
  updateAlert,
  toggleAlert,
  deleteAlert,
  // Saved Searches
  getSavedSearches,
  createSavedSearch,
  updateSavedSearch,
  deleteSavedSearch,
  runSavedSearch,
  // Helpers
  generateSearchName,
};

export default consumerApi;