import { createSlice, PayloadAction } from '@reduxjs/toolkit';
import { AppDispatch, RootState } from './index';

// 健康数据类型定义
export interface FitnessRingsData {
  activeCalories: number;
  activeCaloriesGoal: number;
  exerciseMinutes: number;
  exerciseMinutesGoal: number;
  standHours: number;
  standHoursGoal: number;
}

export interface HealthData {
  activeCalories: number | null;
  heartRate: number | null;
  activeEnergyBurned: number;
  activeCaloriesGoal: number;
  exerciseMinutes: number;
  exerciseMinutesGoal: number;
  standHours: number;
  standHoursGoal: number;
}

export interface HealthState {
  // 按日期存储的历史数据
  dataByDate: Record<string, HealthData>;

  // 加载状态
  loading: boolean;
  error: string | null;

  // 最后更新时间
  lastUpdateTime: string | null;
}

// 初始状态
const initialState: HealthState = {
  dataByDate: {},
  loading: false,
  error: null,
  lastUpdateTime: null,
};

const healthSlice = createSlice({
  name: 'health',
  initialState,
  reducers: {
    // 设置加载状态
    setLoading: (state, action: PayloadAction<boolean>) => {
      state.loading = action.payload;
    },

    // 设置错误信息
    setError: (state, action: PayloadAction<string | null>) => {
      state.error = action.payload;
    },

    // 设置完整的健康数据
    setHealthData: (state, action: PayloadAction<{
      date: string;
      data: HealthData;
    }>) => {
      const { date, data } = action.payload;

      // 存储到历史数据
      state.dataByDate[date] = data;

      state.lastUpdateTime = new Date().toISOString();
    },

    // 清除特定日期的数据
    clearHealthDataForDate: (state, action: PayloadAction<string>) => {
      const date = action.payload;
      delete state.dataByDate[date];

    },

    // 清除所有健康数据
    clearAllHealthData: (state) => {
      state.dataByDate = {};
      state.error = null;
      state.lastUpdateTime = null;
    },
  },
});

// Action creators
export const {
  setLoading,
  setError,
  setHealthData,
  clearHealthDataForDate,
  clearAllHealthData,
} = healthSlice.actions;

// Thunk action to fetch and set health data for a specific date
export const fetchHealthDataForDate = (date: Date) => {
  return async (dispatch: AppDispatch, getState: () => RootState) => {
    try {
      dispatch(setLoading(true));
      dispatch(setError(null));

      // 这里可以添加实际的 API 调用逻辑
      // 目前我们假设数据已经通过其他方式获取

      dispatch(setLoading(false));
    } catch (error) {
      dispatch(setError(error instanceof Error ? error.message : '获取健康数据失败'));
      dispatch(setLoading(false));
    }
  };
};

// Selectors
export const selectHealthDataByDate = (date: string) => (state: RootState) => state.health.dataByDate[date];
export const selectHealthLoading = (state: RootState) => state.health.loading;
export const selectHealthError = (state: RootState) => state.health.error;
export const selectLastUpdateTime = (state: RootState) => state.health.lastUpdateTime;

export default healthSlice.reducer;