import { create } from 'zustand';
import axios from 'axios';
import type { GridRisk, GridDetail, Alert, Stats, ForecastDay } from '@/types';
import { riskApi, alertApi, gridApi, caseApi } from '@/services/api';

function isCancelError(e: unknown): boolean {
  return axios.isCancel(e) || (e as Error)?.message === 'canceled';
}

interface RiskState {
  grids: GridRisk[];
  selectedGrid: GridDetail | null;
  selectedGridId: string | null;
  alerts: Alert[];
  stats: Stats | null;
  forecastDay: ForecastDay;
  isLoading: boolean;
  error: string | null;
  showFullscreen: boolean;
  setForecastDay: (day: ForecastDay) => void;
  setSelectedGridId: (id: string | null) => void;
  setShowFullscreen: (show: boolean) => void;
  fetchRiskMap: () => Promise<void>;
  fetchGridDetail: (gridId: string) => Promise<void>;
  fetchAlerts: () => Promise<void>;
  fetchStats: () => Promise<void>;
  clearError: () => void;
}

export const useRiskStore = create<RiskState>((set, get) => ({
  grids: [],
  selectedGrid: null,
  selectedGridId: null,
  alerts: [],
  stats: null,
  forecastDay: 0,
  isLoading: false,
  error: null,
  showFullscreen: false,

  setForecastDay: (day) => {
    set({ forecastDay: day });
    get().fetchRiskMap();
  },

  setSelectedGridId: (id) => {
    set({ selectedGridId: id });
    if (id) get().fetchGridDetail(id);
    else set({ selectedGrid: null });
  },

  setShowFullscreen: (show) => set({ showFullscreen: show }),

  clearError: () => set({ error: null }),

  fetchRiskMap: async () => {
    set({ isLoading: true, error: null });
    try {
      const { forecastDay } = get();
      const data = forecastDay === 0
        ? await riskApi.getCurrentRiskMap()
        : await riskApi.getForecast(forecastDay);
      set({ grids: data.grids || [], isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载风险地图失败', isLoading: false });
    }
  },

  fetchGridDetail: async (gridId) => {
    set({ isLoading: true, error: null });
    try {
      const data = await riskApi.getGridDetail(gridId);
      set({ selectedGrid: data.grid, isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载网格详情失败', isLoading: false });
    }
  },

  fetchAlerts: async () => {
    try {
      const data = await alertApi.getAlerts({ min_risk: 0.6 });
      set({ alerts: data.alerts || [] });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ alerts: [], error: (e as Error).message || '加载预警数据失败' });
    }
  },

  fetchStats: async () => {
    try {
      const data = await riskApi.getStats();
      set({ stats: data });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载统计数据失败' });
    }
  },
}));

export { useAnalysisStore } from './analysisStore';
export { useDrilldownStore } from './drilldownStore';
export { useDiseaseStore } from './diseaseStore';


interface TimelineState {
  currentDate: string;
  startDate: string;
  endDate: string;
  isPlaying: boolean;
  playbackSpeed: number;
  setCurrentDate: (date: string) => void;
  setDateRange: (start: string, end: string) => void;
  setPlaying: (playing: boolean) => void;
  setPlaybackSpeed: (speed: number) => void;
  goToNextDay: () => void;
  goToPrevDay: () => void;
}

export const useTimelineStore = create<TimelineState>((set, get) => ({
  currentDate: new Date().toISOString().split('T')[0],
  startDate: '2022-12-01',
  endDate: '2024-12-30',
  isPlaying: false,
  playbackSpeed: 1,

  setCurrentDate: (date) => set({ currentDate: date }),

  setDateRange: (start, end) => set({ startDate: start, endDate: end }),

  setPlaying: (playing) => set({ isPlaying: playing }),

  setPlaybackSpeed: (speed) => set({ playbackSpeed: speed }),

  goToNextDay: () => {
    const { currentDate, endDate } = get();
    const next = new Date(currentDate);
    next.setDate(next.getDate() + 1);
    if (next.toISOString().split('T')[0] <= endDate) {
      set({ currentDate: next.toISOString().split('T')[0] });
    }
  },

  goToPrevDay: () => {
    const { currentDate, startDate } = get();
    const prev = new Date(currentDate);
    prev.setDate(prev.getDate() - 1);
    if (prev.toISOString().split('T')[0] >= startDate) {
      set({ currentDate: prev.toISOString().split('T')[0] });
    }
  },
}));


interface GridFeature {
  grid_id: string;
  latitude: number;
  longitude: number;
  district: string;
  AQI: number;
  PM25: number;
  PM10: number;
  total_cases: number;
}

interface MonitoringState {
  gridFeatures: GridFeature[];
  aggregatedData: Array<{ date: string; district: string; total_cases: number; avg_AQI: number }>;
  districtCases: Array<{ district: string; total: number; outpatient: number; inpatient: number }>;
  isLoading: boolean;
  error: string | null;
  fetchGridFeatures: (date: string) => Promise<void>;
  fetchAggregatedData: (startDate: string, endDate: string, district?: string) => Promise<void>;
  fetchDistrictCases: (diagnosis?: string) => Promise<void>;
  clearError: () => void;
}

export const useMonitoringStore = create<MonitoringState>((set) => ({
  gridFeatures: [],
  aggregatedData: [],
  districtCases: [],
  isLoading: false,
  error: null,

  clearError: () => set({ error: null }),

  fetchGridFeatures: async (date) => {
    set({ isLoading: true, error: null });
    try {
      const data = await gridApi.getGridsGeoJSON(date);

      const features: GridFeature[] = (data.features || []).map((f: any) => ({
        grid_id: f.properties.grid_id,
        latitude: f.properties.latitude,
        longitude: f.properties.longitude,
        district: f.properties.district,
        AQI: f.properties.AQI || 0,
        PM25: f.properties.PM25 || 0,
        PM10: f.properties.PM10 || 0,
        total_cases: f.properties.total_cases || 0,
      }));

      set({ gridFeatures: features, isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载网格数据失败', isLoading: false });
    }
  },

  fetchAggregatedData: async (startDate, endDate, district) => {
    set({ isLoading: true, error: null });
    try {
      const data = await gridApi.getHistoricalAggregated(startDate, endDate, 'daily', district);
      set({ aggregatedData: data.aggregations || [], isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载聚合数据失败', isLoading: false });
    }
  },

  fetchDistrictCases: async (diagnosis) => {
    set({ isLoading: true, error: null });
    try {
      const data = await caseApi.getDistricts(diagnosis ? { diagnosis } : undefined);
      const districts = Array.isArray(data) ? data : (data as any).districts || [];
      set({ districtCases: districts, isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载区县病例数据失败', isLoading: false });
    }
  },
}));


interface PredictionState {
  predictions: GridPrediction[];
  predictionDays: number;
  isLoading: boolean;
  error: string | null;
  fetchPredictions: (date: string, days: number, district?: string) => Promise<void>;
  clearError: () => void;
}

interface GridPrediction {
  grid_id: string;
  latitude: number;
  longitude: number;
  risk_1day: number;
  risk_3day: number;
  risk_7day: number;
  risk_level: string;
}

export const usePredictionStore = create<PredictionState>((set) => ({
  predictions: [],
  predictionDays: 7,
  isLoading: false,
  error: null,

  clearError: () => set({ error: null }),

  fetchPredictions: async (date, days, district) => {
    set({ isLoading: true, error: null });
    try {
      const data = await gridApi.getMultiDayPrediction(date, days, district);
      set({ predictions: data.predictions || [], isLoading: false });
    } catch (e) {
      if (isCancelError(e)) return;
      set({ error: (e as Error).message || '加载预测数据失败', isLoading: false });
    }
  },
}));