aeroresolve_frontend/src/app/configuration/masterData/MasterDataApi.ts

import { ApiClient } from '../../api/ApiClient';
import type {
  MasterDataCategoryItem,
  MasterDataItem,
  MasterDataValueFormData,
} from './MasterDataTypes';

// Helper to normalize items so label and value are guaranteed
function normalizeItems(items: any[]): MasterDataItem[] {
  if (!Array.isArray(items)) return [];
  return items.map((item) => {
    const val = item.value || item.label || item.name || item.code || '';
    const lbl = item.label || item.value || item.name || item.code || '';
    return {
      ...item,
      id: item.id || val,
      value: val,
      label: lbl,
      isActive: item.isActive !== false,
    };
  });
}

// ─── Lookup Tables & Categories List Endpoint ─────────────────────────────────

export function getLookupTables(): Promise<MasterDataCategoryItem[]> {
  return ApiClient.get<any, MasterDataCategoryItem[]>('/master-data/lookup-tables')
    .then((res) => (Array.isArray(res) ? res : []))
    .catch(() => []);
}

export function getMasterCategories(): Promise<MasterDataCategoryItem[]> {
  return getLookupTables()
    .then((tables) => {
      if (Array.isArray(tables) && tables.length > 0) return tables;
      return ApiClient.get<any, MasterDataCategoryItem[]>('/master-data/categories')
        .then((res) => (Array.isArray(res) ? res : []))
        .catch(() => []);
    })
    .catch(() => []);
}

// ─── Category Values Endpoint ───────────────────────────────────────────────

export function getCategoryValues(categoryCode: string): Promise<MasterDataItem[]> {
  if (!categoryCode) return Promise.resolve([]);
  return ApiClient.get<any, any[]>(`/master-data/${categoryCode}`)
    .then((res) => normalizeItems(res))
    .catch(() => []);
}

// ─── Generic Master Data Item CRUD ──────────────────────────────────────────

export function getMasterDataByCategory(category: string): Promise<MasterDataItem[]> {
  return getCategoryValues(category);
}

export function createCategoryValue(
  categoryCode: string,
  payload: MasterDataValueFormData,
): Promise<MasterDataItem> {
  return ApiClient.post<any, MasterDataItem>(`/master-data/${categoryCode}`, {
    ...payload,
    label: payload.value,
  });
}

export function updateCategoryValue(
  categoryCode: string,
  id: string,
  payload: Partial<MasterDataValueFormData>,
): Promise<MasterDataItem> {
  return ApiClient.put<any, MasterDataItem>(`/master-data/${categoryCode}/${id}`, {
    ...payload,
    label: payload.value || payload.label,
  });
}

export function deleteCategoryValue(categoryCode: string, id: string): Promise<void> {
  return ApiClient.delete<any, void>(`/master-data/${categoryCode}/${id}`);
}

// ─── Individual Category Helpers for Cohort & Policy Modules ─────────────────

export function getMembershipTiers(): Promise<MasterDataItem[]> {
  return getCategoryValues('membership-tier');
}

export function getCustomerValues(): Promise<MasterDataItem[]> {
  return getCategoryValues('customer-value');
}

export function getRegions(): Promise<MasterDataItem[]> {
  return getCategoryValues('region');
}

export function getTripPurposes(): Promise<MasterDataItem[]> {
  return getCategoryValues('trip-purpose');
}

export function getCabinClasses(): Promise<MasterDataItem[]> {
  return getCategoryValues('cabin-class');
}

export function getPassengerTypes(): Promise<MasterDataItem[]> {
  return getCategoryValues('passenger-type');
}

export function getAncillaryPurchases(): Promise<MasterDataItem[]> {
  return getCategoryValues('ancillary-purchase');
}

export function getRevenueSegments(): Promise<MasterDataItem[]> {
  return getCategoryValues('revenue-segment');
}

// ─── Fetch All Master Data at Once ──────────────────────────────────────────

export interface AllMasterData {
  membershipTiers: MasterDataItem[];
  customerValues: MasterDataItem[];
  regions: MasterDataItem[];
  tripPurposes: MasterDataItem[];
  cabinClasses: MasterDataItem[];
  passengerTypes: MasterDataItem[];
  ancillaryPurchases: MasterDataItem[];
  revenueSegments: MasterDataItem[];
}

export async function getAllMasterData(): Promise<AllMasterData> {
  const [
    membershipTiers,
    customerValues,
    regions,
    tripPurposes,
    cabinClasses,
    passengerTypes,
    ancillaryPurchases,
    revenueSegments,
  ] = await Promise.all([
    getMembershipTiers(),
    getCustomerValues(),
    getRegions(),
    getTripPurposes(),
    getCabinClasses(),
    getPassengerTypes(),
    getAncillaryPurchases(),
    getRevenueSegments(),
  ]);

  return {
    membershipTiers,
    customerValues,
    regions,
    tripPurposes,
    cabinClasses,
    passengerTypes,
    ancillaryPurchases,
    revenueSegments,
  };
}