import { useRef } from "react";
import useSwr from "swr";
import { enqueueSnackbar } from "notistack";

import { userApi } from "./requests";

export function useAdmins(page: number, pageSize: number) {
  const adminPagesRef = useRef<number>(0);

  const swrResponse = useSwr(
    ["admin", page, pageSize],
    async ([_, page, pageSize]) => {
      const [adminResponse, error] = await userApi.getManagerList(
        page,
        pageSize
      );

      if (error) {
        throw new Error(error);
      }

      adminPagesRef.current = adminResponse?.totalPages || 1;
      return adminResponse;
    },
    {
      onError(err) {
        console.error("Error fetching users", err);
        enqueueSnackbar(err.message, { variant: "error" });
      },
      focusThrottleInterval: 60e3,
      keepPreviousData: true,
    }
  );

  return {
    ...swrResponse,
    adminPages: adminPagesRef.current,
  };
}

export function useManagers(page: number, pageSize: number) {
  const managerPagesRef = useRef<number>(0);

  const swrResponse = useSwr(
    ["manager", page, pageSize],
    async ([_, page, pageSize]) => {
      const [managerResponse, error] = await userApi.getManagerList(
        page,
        pageSize
      );

      if (error) {
        throw new Error(error);
      }

      managerPagesRef.current = managerResponse?.totalPages || 1;
      return managerResponse;
    },
    {
      onError(err) {
        console.error("Error fetching users", err);
        enqueueSnackbar(err.message, { variant: "error" });
      },
      focusThrottleInterval: 60e3,
      keepPreviousData: true,
    }
  );

  return {
    ...swrResponse,
    managerPages: managerPagesRef.current,
  };
}

export function useUsers(page: number, pageSize: number) {
  const userPagesRef = useRef<number>(0);

  const swrResponse = useSwr(
    ["users", page, pageSize],
    async ([_, page, pageSize]) => {
      const [userResponse, error] = await userApi.getUserList(page, pageSize);

      if (error) {
        throw new Error(error);
      }

      userPagesRef.current = userResponse?.totalPages || 1;
      return userResponse;
    },
    {
      onError(err) {
        console.error("Error fetching users", err);
        enqueueSnackbar(err.message, { variant: "error" });
      },
      focusThrottleInterval: 60e3,
      keepPreviousData: true,
    }
  );

  return {
    ...swrResponse,
    userPagesCount: userPagesRef.current,
  };
}