import { type FC, useEffect, useMemo, useState } from "react";
import { useTranslation } from "react-i18next";
import { toast } from '../../../../../components/Toast';
import { ErrorType } from "../../../../../helpers/types";
import { useEndTimeTracking, useGetTaskTimes, useStartTimeTracking } from "../../../task/hooks/useTaskTimeData";
import { formatElapsedTime, getActiveTimeEntry, getElapsedSeconds } from "./utils";

type Props = {
  taskId: string;
};

const TaskDetailTimePopover: FC<Props> = ({ taskId }) => {
  const { t } = useTranslation("global");
  const getTaskTimes = useGetTaskTimes(taskId);
  const startTimeTracking = useStartTimeTracking();
  const endTimeTracking = useEndTimeTracking();

  const times = useMemo(() => getTaskTimes.data?.data ?? [], [getTaskTimes.data]);
  const activeEntry = useMemo(() => getActiveTimeEntry(times), [times]);
  const isTracking = !!activeEntry;
  const isSubmitting = startTimeTracking.isPending || endTimeTracking.isPending;

  const [elapsedSeconds, setElapsedSeconds] = useState(() =>
    activeEntry ? getElapsedSeconds(activeEntry.startedAt) : 0,
  );

  useEffect(() => {
    if (!activeEntry) {
      setElapsedSeconds(0);
      return;
    }

    const updateElapsed = () => {
      setElapsedSeconds(getElapsedSeconds(activeEntry.startedAt));
    };

    updateElapsed();
    const intervalId = window.setInterval(updateElapsed, 1000);

    return () => {
      window.clearInterval(intervalId);
    };
  }, [activeEntry?.id, activeEntry?.startedAt]);

  const handleStart = () => {
    startTimeTracking.mutate(taskId, {
      onSuccess: () => {
        toast(t("success"), 'success');
      },
      onError: (error: ErrorType) => {
        toast(error.response?.data?.error.message[0], 'error');
      },
    });
  };

  const handleStop = () => {
    endTimeTracking.mutate(taskId, {
      onSuccess: () => {
        toast(t("success"), 'success');
      },
      onError: (error: ErrorType) => {
        toast(error.response?.data?.error.message[0], 'error');
      },
    });
  };

  return (
    <div className="flex min-h-9 w-full items-center">
      {isTracking ? (
        <div className="flex w-full items-center justify-between gap-3">
          <span className="font-mono text-sm font-bold tracking-wider text-[#01347A]">
            {formatElapsedTime(elapsedSeconds)}
          </span>
          <button
            type="button"
            onClick={handleStop}
            disabled={isSubmitting}
            className="shrink-0 rounded-lg bg-[#FF4D4F] px-3 py-1.5 text-[11px] font-medium text-white disabled:opacity-60"
          >
            {t("taskmanager.task_detail.stop_tracking")}
          </button>
        </div>
      ) : (
        <button
          type="button"
          onClick={handleStart}
          disabled={isSubmitting}
          className="w-full rounded-lg bg-primary px-3 py-2 text-[11px] font-medium text-white disabled:opacity-60"
        >
          {t("taskmanager.task_detail.start_tracking")}
        </button>
      )}
    </div>
  );
};

export default TaskDetailTimePopover;
