import { useEffect, useState } from "react";
import {
  cacheData,
  getCachedData,
  useSelectedProject,
} from "../slices/apiDataManager";
import AttendanceRepository from "../repositories/AttendanceRepository";
import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import showToast from "../services/toastService";
import { useDispatch, useSelector } from "react-redux";
import { store } from "../store/store";
import { setDefaultDateRange } from "../slices/localVariablesSlice";

// ----------------------------Query-----------------------------

// export const useAttendance = (projectId) => {
//   const dispatch = useDispatch()
//   const {
//     data: attendance = [],
//     isLoading: loading,
//     error,
//     refetch: recall,
//     isFetching
//   } = useQuery({
//     queryKey: ["attendance", projectId],
//     queryFn: async () => {
//       const response = await AttendanceRepository.getAttendance(projectId);
//       return response.data;
//     },
//     enabled: !!projectId,
//     onError: (error) => {
//       showToast(error.message || "Error while fetching Attendance", "error");
//     },
//   });

//   return {
//     attendance,
//     loading,
//     error,
//     recall,
//     isFetching
//   };
// };

export const useAttendance = (
  projectId,
  organizationId,
) => {
  const dispatch = useDispatch();

  const {
    data: attendance = [],
    isLoading: loading,
    error,
    refetch: recall,
    isFetching,
  } = useQuery({
    queryKey: ["attendance", projectId, organizationId], // include filters in cache key
    queryFn: async () => {
      const response = await AttendanceRepository.getAttendance(
        projectId,
        organizationId,
      );
      return response.data;
    },
    enabled: !!projectId, // only run if projectId exists
    onError: (error) => {
      showToast(error.message || "Error while fetching Attendance", "error");
    },
  });

  return { attendance, loading, error, recall, isFetching };
};

export const useAttendancesLogs = (
  projectId,
  fromDate,
  toDate,
  organizationId
) => {
  const dispatch = useDispatch();
  const enabled = !!projectId && !!fromDate && !!toDate;

  const query = useQuery({
    queryKey: ["attendanceLogs", projectId, fromDate, toDate, organizationId],
    queryFn: async () => {
      const res = await AttendanceRepository.getAttendanceFilteredByDate(
        projectId,
        fromDate,
        toDate,
        organizationId
      );
      return res.data;
    },
    enabled,
  });

  useEffect(() => {
    if (query.data && fromDate && toDate) {
      dispatch(
        setDefaultDateRange({
          startDate: fromDate,
          endDate: toDate,
        })
      );
    }
  }, [dispatch, query.data, fromDate, toDate]);
  return query;
};

export const useEmployeeAttendacesLog = (id) => {
  const {
    data: logs = [],
    isLoading: loading,
    error,
    refetch: recall,
  } = useQuery({
    queryKey: ["employeeAttendanceLogs", id],
    queryFn: async () => {
      const response = await AttendanceRepository.getAttendanceLogs(id);
      return response.data;
    },
    enabled: !!id,
    onError: (error) => {
      showToast(
        error.message || "Error while fetching Attendance Logs",
        "error"
      );
    },
  });

  return {
    logs,
    loading,
    error,
    recall,
  };
};

export const useAttendanceByEmployee = (employeeId, fromDate, toDate) => {
  const enabled = !!employeeId && !!fromDate && !!toDate;

  return useQuery({
    queryKey: ["employeeAttendance", employeeId, fromDate, toDate],
    queryFn: async () => {
      const res = await AttendanceRepository.getAttendanceByEmployee(
        employeeId,
        fromDate,
        toDate
      );
      return res.data;
    },
    enabled,
  });
};

export const useRegularizationRequests = (
  projectId,
  organizationId,
  IncludeInActive = false
) => {
  const dispatch = useDispatch();

  const {
    data: regularizes = [],
    isLoading: loading,
    error,
    refetch: recall,
    isFetching,
  } = useQuery({
    queryKey: ["regularizedList", projectId, organizationId, IncludeInActive], // include filters in cache key
    queryFn: async () => {
      const response = await AttendanceRepository.getRegularizeList(
        projectId,
        organizationId,
        IncludeInActive
      );
      return response.data;
    },
    enabled: !!projectId, // only run if projectId exists
    onError: (error) => {
      showToast(error.message || "Error while fetching regularizes", "error");
    },
  });

  return { regularizes, loading, error, recall, isFetching };
};

// -------------------Mutation--------------------------------------

export const useMarkAttendance = () => {
  const queryClient = useQueryClient();
  const selectedProject = useSelectedProject();
  const selectedDateRange = useSelector(
    (store) => store.localVariables.attendance.defaultDateRange
  );
  const selectedOrganization = useSelector(
    (store) => store.localVariables.attendance.SelectedOrg 
  );

  return useMutation({
    mutationFn: async ({ payload, forWhichTab }) => {
      const res = await AttendanceRepository.markAttendance(payload);
      return res.data;
    },

    onSuccess: (data, variables) => {
      if (variables.forWhichTab == 1) {
        queryClient.setQueryData(["attendance", selectedProject,selectedOrganization], (oldData) => {
          if (!oldData) return oldData;
          return oldData.map((emp) =>
            emp.employeeId === data.employeeId ? { ...emp, ...data } : emp
          );
        });
      } else if (variables.forWhichTab == 2) {
        queryClient.setQueryData(
          [
            "attendanceLogs",
            selectedProject,
            selectedDateRange.startDate,
            selectedDateRange.endDate,selectedOrganization
          ],
          (oldData) => {
            if (!oldData) return oldData;
            return oldData.map((record) =>
              record.id === data.id ? { ...record, ...data } : record
            );
          }
        );
        queryClient.invalidateQueries({ queryKey: ["regularizedList"] });
      } else
        queryClient.setQueryData(
          ["regularizedList", selectedProject],
          (oldData) => {
            if (!oldData) return oldData;
            return oldData.filter((record) => record.id !== data.id);
          }
        ),
          queryClient.invalidateQueries({ queryKey: ["attendanceLogs"] });

      if (variables.forWhichTab !== 3)
        showToast("Attendance marked successfully", "success");
    },
    onError: (error) => {
      showToast(error.message || "Failed to mark attendance", "error");
    },
  });
};