import { create } from "zustand";
import Taro from "@tarojs/taro";
import {
  fetchUserProfile,
  updateUserProfile,
  UserInfoType,
  checkNicknameChangeStatus as checkNicknameChangeStatusApi,
  NicknameChangeStatus,
  updateNickname as updateNicknameApi,
} from "@/services/userService";
import evaluateService, {
  LastTimeTestResult,
} from "@/services/evaluateService";
import { useListStore } from "./listStore";

export interface UserState {
  user: UserInfoType | {};
  fetchUserInfo: () => Promise<UserInfoType | undefined>;
  updateUserInfo: (userInfo: Partial<UserInfoType>) => void;
  nicknameChangeStatus: Partial<NicknameChangeStatus>;
  checkNicknameChangeStatus: (force?: boolean) => void;
  updateNickname: (nickname: string) => void;
  // NTRP 测试结果缓存
  lastTestResult: LastTimeTestResult | null;
  fetchLastTestResult: () => Promise<LastTimeTestResult | null>;
}

const getTimeNextDate = (time: string) => {
  const date = new Date(time);
  date.setDate(date.getDate() + 1);
  const year = date.getFullYear();
  const month = String(date.getMonth() + 1).padStart(2, "0");
  const day = String(date.getDate()).padStart(2, "0");
  return `${year}-${month}-${day}`;
};

// 请求锁，避免重复调用
let isFetchingLastTestResult = false;
let isCheckingNicknameStatus = false;
const CITY_CACHE_KEY = "USER_SELECTED_CITY";

export const useUser = create<UserState>()((set) => ({
  user: {},
  fetchUserInfo: async () => {
    try {
      const res = await fetchUserProfile();
      const userData = res.data;
      set({ user: userData });

      // 优先使用缓存中的城市，不使用用户信息中的位置
      // 检查是否有缓存的城市

      const cachedCity = (Taro as any).getStorageSync?.(CITY_CACHE_KEY);

      if (cachedCity && Array.isArray(cachedCity) && cachedCity.length === 2) {
        // 如果有缓存的城市，使用缓存，不更新 area
        console.log("[userStore] 检测到缓存的城市，使用缓存，不更新 area");
        return userData;
      }

      // 只有当没有缓存时，才使用用户信息中的位置
      if (userData?.last_location_province) {
        const listStore = useListStore.getState();
        const currentArea = listStore.area;

        // 只有当 area 不存在时才使用用户信息中的位置
        if (!currentArea) {
          const newArea: [string, string] = [
            userData.last_location_province || "",
            userData.last_location_city || "",
          ];
          listStore.updateArea(newArea);
          // 保存到缓存
          useUser.getState().updateCache(newArea);
        }
      }

      return userData;
    } catch (error) {
      console.error("获取用户信息失败:", error);
      return undefined;
    }
  },

  // 更新缓存
  updateCache: async (newArea: [string, string]) => {
    try {
      (Taro as any).setStorageSync?.(CITY_CACHE_KEY, newArea);
    } catch (error) {
      console.error("保存城市缓存失败:", error);
    }
  },

  updateUserInfo: async (userInfo: Partial<UserInfoType>) => {
    try {
      // 先更新后端
      await updateUserProfile(userInfo);
      // 然后立即更新本地状态（乐观更新）
      set((state) => {
        const newUser = { ...state.user, ...userInfo };

        // 当 userLastLocationProvince 更新时，同步更新 area
        if (userInfo.last_location_province) {
          const listStore = useListStore.getState();
          const currentArea = listStore.area;
          // 只有当 area 不存在或与 userLastLocationProvince 不一致时才更新
          if (
            !currentArea ||
            currentArea[1] !== userInfo.last_location_province
          ) {
            const newArea: [string, string] = [
              userInfo.last_location_province || "",
              userInfo.last_location_city || "",
            ];
            listStore.updateArea(newArea);
          }
        }

        return { user: newUser };
      });
      // 不再每次都重新获取完整用户信息，减少请求次数
      // 只有在更新头像等需要服务器返回新URL的字段时才需要重新获取
      // 如果需要确保数据一致性，可以在特定场景下手动调用 fetchUserInfo
    } catch (error) {
      console.error("更新用户信息失败:", error);
      throw error;
    }
  },
  nicknameChangeStatus: {},
  checkNicknameChangeStatus: async (force = false) => {
    // 如果正在请求中，直接返回，避免重复调用
    if (isCheckingNicknameStatus) {
      return;
    }
    // 如果已经有状态数据且不是强制更新，跳过，避免重复调用
    if (!force) {
      const currentState = useUser.getState();
      if (
        currentState.nicknameChangeStatus &&
        Object.keys(currentState.nicknameChangeStatus).length > 0
      ) {
        return;
      }
    }
    try {
      isCheckingNicknameStatus = true;
      const res = await checkNicknameChangeStatusApi();
      const { next_period_start_time } = res.data;
      set({
        nicknameChangeStatus: {
          ...res.data,
          next_period_start_date: getTimeNextDate(next_period_start_time),
        },
      });
    } catch (error) {
      console.error("检查昵称变更状态失败:", error);
    } finally {
      isCheckingNicknameStatus = false;
    }
  },
  updateNickname: async (nickname) => {
    try {
      await updateNicknameApi(nickname);
      // 更新昵称后强制更新状态
      await useUser.getState().checkNicknameChangeStatus(true);
      set((state) => ({
        user: { ...state.user, nickname },
      }));
    } catch (error) {
      console.error("更新用户昵称失败:", error);
    }
  },
  // NTRP 测试结果缓存
  lastTestResult: null,
  fetchLastTestResult: async () => {
    // 如果已经有缓存数据，直接返回，避免重复调用
    const currentState = useUser.getState();
    if (currentState.lastTestResult) {
      return currentState.lastTestResult;
    }
    // 如果正在请求中，等待请求完成，避免重复调用
    if (isFetchingLastTestResult) {
      // 等待请求完成，最多等待 3 秒
      let waitCount = 0;
      while (isFetchingLastTestResult && waitCount < 30) {
        await new Promise((resolve) => setTimeout(resolve, 100));
        waitCount++;
        const state = useUser.getState();
        if (state.lastTestResult) {
          return state.lastTestResult;
        }
      }
      return null;
    }
    try {
      isFetchingLastTestResult = true;
      const res = await evaluateService.getLastResult();
      if (res.code === 0) {
        set({ lastTestResult: res.data });
        return res.data;
      }
      return null;
    } catch (error) {
      console.error("获取NTRP测试结果失败:", error);
      return null;
    } finally {
      isFetchingLastTestResult = false;
    }
  },
}));

export const useUserInfo = () => useUser((state) => state.user);
export const useNicknameChangeStatus = () =>
  useUser((state) => state.nicknameChangeStatus);

export const useUserActions = () =>
  useUser((state) => ({
    fetchUserInfo: state.fetchUserInfo,
    updateCache: state.updateCache,
    updateUserInfo: state.updateUserInfo,
    checkNicknameChangeStatus: state.checkNicknameChangeStatus,
    updateNickname: state.updateNickname,
    fetchLastTestResult: state.fetchLastTestResult,
  }));

export const useLastTestResult = () => useUser((state) => state.lastTestResult);