import { fetchJson } from '../../auth/api-client';
import type {
  HydrogenKpi, HydrogenStationTop, HydrogenRegionShare, HydrogenMonthlyPoint, HydrogenDailyRow,
  HydrogenCustomerRow, HydrogenStationFull,
  ElectricKpi, ElectricDailyRow, ElectricMonthGroup,
  CustomerType, DateQuickPick,
} from './types';

const BASE = '/api/energy';

export interface HydrogenOverviewResponse {
  kpi: HydrogenKpi;
  top5: HydrogenStationTop[];
  regions: HydrogenRegionShare[];
  monthly: HydrogenMonthlyPoint[];
  customers: HydrogenCustomerRow[];
  stations: HydrogenStationFull[];
  availableYears: number[];
  year: number;
}

export function fetchHydrogenOverview(year?: number, force = false): Promise<HydrogenOverviewResponse> {
  const params = new URLSearchParams();
  if (year) params.set('year', String(year));
  if (force) params.set('force', '1');
  const q = params.toString();
  return fetchJson<HydrogenOverviewResponse>(`${BASE}/hydrogen/overview${q ? `?${q}` : ''}`);
}

export interface HydrogenDailyQuery {
  range?: DateQuickPick;
  startDate?: string;
  endDate?: string;
}

export function fetchHydrogenDaily(query: HydrogenDailyQuery, customer: CustomerType): Promise<HydrogenDailyRow[]> {
  const q = new URLSearchParams({ customer });
  if (query.range) q.set('range', query.range);
  if (query.startDate) q.set('startDate', query.startDate);
  if (query.endDate) q.set('endDate', query.endDate);
  return fetchJson<HydrogenDailyRow[]>(`${BASE}/hydrogen/daily?${q.toString()}`);
}

export interface ElectricOverviewResponse {
  kpi: ElectricKpi;
  trend: ElectricDailyRow[];
}

export function fetchElectricOverview(): Promise<ElectricOverviewResponse> {
  return fetchJson<ElectricOverviewResponse>(`${BASE}/electric/overview`);
}

export function fetchElectricMonthly(customer: CustomerType, query: HydrogenDailyQuery = { range: 'last15' }): Promise<ElectricMonthGroup[]> {
  const q = new URLSearchParams({ customer });
  if (query.range) q.set('range', query.range);
  if (query.startDate) q.set('startDate', query.startDate);
  if (query.endDate) q.set('endDate', query.endDate);
  return fetchJson<ElectricMonthGroup[]>(`${BASE}/electric/monthly?${q.toString()}`);
}