import api from '@common/services/api';

// ============================================================
// 백엔드 API 응답 타입
// ============================================================

export interface IncidentListItem {
  acdntSn: number;
  acdntCd: string;
  acdntNm: string;
  acdntTpCd: string;
  acdntSttsCd: string;
  lat: number;
  lng: number;
  locDc: string;
  occrnDtm: string;
  regionNm: string;
  officeNm: string;
  svrtCd: string | null;
  vesselTp: string | null;
  phaseCd: string;
  analystNm: string | null;
  oilTpCd: string | null;
  spilQty: number | null;
  spilUnitCd: string | null;
  fcstHr: number | null;
  mediaCnt: number;
}

export interface PredExecItem {
  predExecSn: number;
  algoCd: string;
  execSttsCd: string;
  bgngDtm: string | null;
  cmplDtm: string | null;
  reqdSec: number | null;
}

export interface WeatherInfo {
  locNm: string;
  obsDtm: string;
  icon: string;
  temp: string;
  weatherDc: string;
  wind: string;
  wave: string;
  humid: string;
  vis: string;
  sst: string;
  tide: string;
  highTide: string;
  lowTide: string;
  forecast: Array<{ hour: string; icon: string; temp: string }>;
  impactDc: string;
}

export interface MediaInfo {
  photoCnt: number;
  videoCnt: number;
  satCnt: number;
  cctvCnt: number;
  photoMeta: Record<string, unknown> | null;
  droneMeta: Record<string, unknown> | null;
  satMeta: Record<string, unknown> | null;
  cctvMeta: Record<string, unknown> | null;
}

export interface IncidentDetail extends IncidentListItem {
  predictions: PredExecItem[];
  weather: WeatherInfo | null;
  media: MediaInfo | null;
}

// ============================================================
// 프론트 호환 타입
// ============================================================

export interface IncidentCompat {
  id: string;
  name: string;
  status: 'active' | 'investigating' | 'closed';
  date: string;
  time: string;
  region: string;
  office: string;
  location: { lat: number; lon: number };
  causeType?: string;
  oilType?: string;
  prediction?: string;
  vesselName?: string;
  mediaCount?: number;
}

function toCompat(item: IncidentListItem): IncidentCompat {
  const dt = new Date(item.occrnDtm);
  const statusMap: Record<string, 'active' | 'investigating' | 'closed'> = {
    ACTIVE: 'active',
    INVESTIGATING: 'investigating',
    CLOSED: 'closed',
  };
  return {
    id: String(item.acdntSn),
    name: item.acdntNm,
    status: statusMap[item.acdntSttsCd] ?? 'active',
    date: dt.toISOString().slice(0, 10),
    time: dt.toTimeString().slice(0, 5),
    region: item.regionNm,
    office: item.officeNm,
    location: { lat: item.lat, lon: item.lng },
    causeType: item.acdntTpCd,
    oilType: item.oilTpCd ?? undefined,
    prediction: item.fcstHr ? '예측완료' : undefined,
    mediaCount: item.mediaCnt,
  };
}

// ============================================================
// API 호출 함수
// ============================================================

export async function fetchIncidentsRaw(): Promise<IncidentListItem[]> {
  const { data } = await api.get<IncidentListItem[]>('/incidents');
  return data;
}

export async function fetchIncidents(filters?: {
  status?: string;
  region?: string;
  search?: string;
  startDate?: string;
  endDate?: string;
}): Promise<IncidentCompat[]> {
  const params = new URLSearchParams();
  if (filters?.status) params.set('status', filters.status);
  if (filters?.region) params.set('region', filters.region);
  if (filters?.search) params.set('search', filters.search);
  if (filters?.startDate) params.set('startDate', filters.startDate);
  if (filters?.endDate) params.set('endDate', filters.endDate);

  const query = params.toString();
  const url = query ? `/incidents?${query}` : '/incidents';
  const { data } = await api.get<IncidentListItem[]>(url);
  return data.map(toCompat);
}

export async function fetchIncidentDetail(sn: number): Promise<IncidentDetail> {
  const { data } = await api.get<IncidentDetail>(`/incidents/${sn}`);
  return data;
}

export async function fetchIncidentWeather(sn: number): Promise<WeatherInfo | null> {
  try {
    const { data } = await api.get<WeatherInfo>(`/incidents/${sn}/weather`);
    return data;
  } catch {
    return null;
  }
}

export async function fetchIncidentMedia(sn: number): Promise<MediaInfo | null> {
  try {
    const { data } = await api.get<MediaInfo>(`/incidents/${sn}/media`);
    return data;
  } catch {
    return null;
  }
}

export async function fetchIncidentPredictions(sn: number): Promise<PredExecItem[]> {
  const { data } = await api.get<PredExecItem[]>(`/incidents/${sn}/predictions`);
  return data;
}