import * as signalR from "@microsoft/signalr";
import {
  cacheData,
  clearCacheKey,
  getCachedData,
} from "../slices/apiDataManager";
import showToast from "./toastService";
import eventBus from "./eventBus";
import { useSelector } from "react-redux";
import { clearApiCacheKey } from "../slices/apiCacheSlice";
import { BASE_URL } from "../utils/constants";
import { queryClient } from "../layouts/AuthLayout";
const base_Url = BASE_URL;
let connection = null;

const targetPath = "";

export function startSignalR(loggedUser) {
  var jwtToken = localStorage.getItem("jwtToken");
  connection = new signalR.HubConnectionBuilder()
    .withUrl(`${base_Url}/hubs/marco`, {
      accessTokenFactory: () => jwtToken,
      transport: signalR.HttpTransportType.LongPolling,
      withCredentials: false,
    })
    // .withKeepAliveInterval(30000)
    // .withServerTimeout(30000)
    .withAutomaticReconnect()
    .build();
  connection.serverTimeoutInMilliseconds = 30000; // 60 seconds
  const todayDate = new Date();
  const today = new Date(
    Date.UTC(todayDate.getFullYear(), todayDate.getMonth(), todayDate.getDate())
  )
    .toISOString()
    .split("T")[0];
  connection.on("NotificationEventHandler", (data) => {
    const { loggedInUserId, keyword, response, employeeList, numberOfImages } =
      data;
    const loggedInId = loggedUser?.employeeInfo?.id;

    if (loggedInUserId === loggedInId) return;

    // ---- Handlers for invalidate or remove ----
    const queryInvalidators = {
      Payment_Request: () => {
        queryClient.invalidateQueries({ queryKey: ["paymentRequestList"] }),
          queryClient.invalidateQueries({ queryKey: ["paymentRequest"] });
      },
      Recurring_Payment: () => {
        queryClient.invalidateQueries({ queryKey: ["recurringExpenseList"] }),
          queryClient.invalidateQueries({ queryKey: ["recurringExpense"] });
      },
      Expanse: () => {
        queryClient.invalidateQueries({ queryKey: ["Expenses"] }),
          queryClient.invalidateQueries({ queryKey: ["Expense"] });
      },
      Create_Project: () => queryClient.invalidateQueries(["projectslist"]),
      Update_Project: () => queryClient.invalidateQueries(["projectslist"]),
      Infra: () => queryClient.removeQueries({ queryKey: ["ProjectInfra"] }),
      Task_Report: () => queryClient.invalidateQueries({ queryKey: ["Infra"] }),
      WorkItem: () =>
        queryClient.invalidateQueries({ queryKey: ["WorkItems"] }),
      Directory_Notes: () => {
        queryClient.invalidateQueries({ queryKey: ["directoryNotes"] });
        queryClient.invalidateQueries({ queryKey: ["Notes"] });
      },
      Directory_Buckets: () => {
        queryClient.invalidateQueries({ queryKey: ["bucketList"] });
      },
      Directory: () => {
        queryClient.invalidateQueries({ queryKey: ["contacts"] });
        queryClient.invalidateQueries({ queryKey: ["Contact"] });
        queryClient.invalidateQueries({ queryKey: ["ContactProfile"] });
      },
    };

    // ---- Keyword based event emitters ----
    const emitters = {
      employee: () => eventBus.emit("employee", data),
      project: () => eventBus.emit("project", data),
      infra: () => eventBus.emit("infra", data),
      assign_project_all: () => eventBus.emit("assign_project_all", data),
      image_gallery: () => eventBus.emit("image_gallery", data),
    };

    // ---- Handle Attendance ----
    if (keyword === "Attendance") {
      const checkIn = response.checkInTime.substring(0, 10);
      if (today === checkIn) eventBus.emit("attendance", data);

      const onlyDate = Number(checkIn.substring(8, 10));
      const afterTwoDay =
        checkIn.substring(0, 8) + (onlyDate + 2).toString().padStart(2, "0");
      if (
        afterTwoDay <= today &&
        (response.activity === 4 || response.activity === 5)
      ) {
        eventBus.emit("regularization", data);
      }
      eventBus.emit("attendance_log", data);
    }

    // ---- Invalidate/Remove cache by keywords ----
    if (queryInvalidators[keyword]) {
      queryInvalidators[keyword]();
    }

    // ---- Project creation/update ----
    if (keyword === "Create_Project" || keyword === "Update_Project") {
      emitters.project();
    }

    // ---- Assign/deassign project ----
    if (keyword === "Assign_Project") {
      if (employeeList?.includes(loggedInId)) {
        try {
          cacheData("hasReceived", false);
          eventBus.emit("assign_project_one", data);
        } catch {}
      }
      emitters.assign_project_all();
    }

    // ---- Employee update ----
    if (keyword === "Employee") {
      clearCacheKey("Attendance");
      clearCacheKey("regularizedList");
      clearCacheKey("AttendanceLogs");

      queryClient.invalidateQueries(["allEmployee", true]);
      queryClient.invalidateQueries(["allEmployee", false]);
      queryClient.invalidateQueries(["employeeProfile", response?.employeeId]);
      queryClient.invalidateQueries(["employeeListByProject"]);

      emitters.employee();
    }

    // ---- Image related events ----
    if (
      ["Task_Report", "Task_Comment"].includes(keyword) &&
      numberOfImages > 0
    ) {
      emitters.image_gallery();
    }

    // --- Service Project ----------------

    if (keyword === "Service_Project") {
      queryClient.invalidateQueries(["serviceProjects"]);
      queryClient.invalidateQueries(["serviceProject"]);
    }
    if (keyword === "Project_Branch") {
      queryClient.invalidateQueries(["branches"]);
    }

    if (keyword === "Service_Project_Allocation") {
      queryClient.invalidateQueries(["serviceProjectTeam"]);
    }
    if (keyword === "Job_Ticket") {
      queryClient.invalidateQueries(["serviceProjectJobs"]);
      queryClient.invalidateQueries(["service-job"]);
    }
    if (keyword === "Job_Ticket_Comment") {
      queryClient.invalidateQueries(["jobComments"]);
    }
  });

  connection.start();
}

export function stopSignalR() {
  if (connection) connection.stop();
}