All files / src/components/VoteReaction index.tsx

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import { useCallback, useEffect, useState, useRef } from 'react';
import { toast } from 'sonner';
 
// Types
import { UserReaction } from '@/types';
 
// Components
import { ReactionButton } from './ReactionButton';
import {
  LikeIcon,
  SelectedLikeIcon,
  DislikeIcon,
  SelectedDislikeIcon,
} from '@/components/icons/reacts';
 
// Services
import { auth, reactionService } from '@/services';
 
// Hooks
import { useReaction } from '@/hooks/useReaction';
import { useVoteOpen } from '@/hooks/useVoteOpen';
 
// Constants
import { ERROR_MESSAGES } from '@/constants';
import { STATUS_CODE, STATUS_MESSAGES } from '@shared/constants';
 
interface IVoteReaction {
  id: string;
  countLike: number;
  countDislike: number;
  userReaction?: UserReaction;
  disabled?: boolean;
  date?: Date;
  openHour?: number;
  openMinute?: number;
}
 
export const VoteReaction = ({
  id,
  countLike,
  countDislike,
  userReaction,
  disabled,
  date,
  openHour = 11,
  openMinute = 30,
}: IVoteReaction) => {
  const dataWsReaction = useReaction(id);
  const canVote = date ? useVoteOpen(date, openHour, openMinute) : false;
 
  const [active, setActive] = useState<UserReaction | null>(
    userReaction ?? null,
  );
  const [likes, setLikes] = useState(countLike);
  const [dislikes, setDislikes] = useState(countDislike);
  const [loading, setLoading] = useState<UserReaction | null>(null);
 
  const [showLikeBubble, setShowLikeBubble] = useState(false);
  const [showDislikeBubble, setShowDislikeBubble] = useState(false);
 
  const [isLikeAnimating, setIsLikeAnimating] = useState(false);
  const [isDislikeAnimating, setIsDislikeAnimating] = useState(false);
 
  const [pendingReaction, setPendingReaction] = useState<UserReaction | null>(
    null,
  );
 
  // track latest request so only the last click commits
  const latestRequest = useRef(0);
 
  useEffect(() => {
    if (!dataWsReaction) return;
 
    if (!pendingReaction) {
      // only update if numbers are different, clamp to >= 0
      setLikes((prev) =>
        prev !== dataWsReaction.likes
          ? Math.max(0, dataWsReaction.likes)
          : prev,
      );
      setDislikes((prev) =>
        prev !== dataWsReaction.dislikes
          ? Math.max(0, dataWsReaction.dislikes)
          : prev,
      );
    }
  }, [dataWsReaction, pendingReaction]);
 
  const handleClick = useCallback(
    async (type: UserReaction) => {
      if (disabled || loading === type) return;
 
      setLoading(type);
      setPendingReaction(type);
 
      // optimistic UI update
      setActive((prev) => {
        const isDeselect = prev === type;
        const isSwitch = prev !== null && prev !== type;
 
        if (isDeselect) {
          if (type === UserReaction.LIKE) setLikes((l) => Math.max(0, l - 1));
          else setDislikes((d) => Math.max(0, d - 1));
          return null;
        }
 
        if (isSwitch) {
          if (type === UserReaction.LIKE) {
            setLikes((l) => l + 1);
            setDislikes((d) => Math.max(0, d - 1));
          } else {
            setDislikes((d) => d + 1);
            setLikes((l) => Math.max(0, l - 1));
          }
          return type;
        }
 
        if (type === UserReaction.LIKE) setLikes((l) => l + 1);
        else setDislikes((d) => d + 1);
 
        return type;
      });
 
      if (!auth.currentUser) {
        toast.error(STATUS_MESSAGES[STATUS_CODE.UNAUTHORIZED]);
        setLoading(null);
        setPendingReaction(null);
        return;
      }
 
      const requestId = Date.now();
      latestRequest.current = requestId;
 
      try {
        const token = await auth.currentUser?.getIdToken(true);
        const { success, error } = await reactionService({
          lunchMenuId: id,
          token,
          type,
        });
 
        if (latestRequest.current !== requestId) return;
 
        if (!success) {
          toast.error(error?.message || ERROR_MESSAGES.DEFAULT);
        }
      } catch (error) {
        if (latestRequest.current === requestId) {
          toast.error(
            error instanceof Error ? error.message : ERROR_MESSAGES.DEFAULT,
          );
        }
      }
 
      setLoading(null);
      setPendingReaction(null);
    },
    [id, disabled, loading],
  );
 
  const finalDisabled = disabled || !canVote;
 
  return (
    <div className="w-full flex justify-between">
      <ReactionButton
        type={UserReaction.LIKE}
        active={active === UserReaction.LIKE}
        count={likes}
        icon={<LikeIcon />}
        selectedIcon={
          <SelectedLikeIcon className="text-primary-350 h-[54px] w-[54px] sm:h-[36px] sm:w-[36px]" />
        }
        isAnimating={isLikeAnimating}
        setIsAnimating={setIsLikeAnimating}
        showBubble={showLikeBubble}
        setShowBubble={setShowLikeBubble}
        onClick={handleClick}
        disabled={loading === UserReaction.LIKE || finalDisabled}
        align="right"
        isTimeDisabled={!canVote}
      />
      <ReactionButton
        type={UserReaction.DISLIKE}
        active={active === UserReaction.DISLIKE}
        count={dislikes}
        icon={<DislikeIcon />}
        selectedIcon={
          <SelectedDislikeIcon className="text-primary-550 h-[54px] w-[54px] sm:h-[36px] sm:w-[36px]" />
        }
        isAnimating={isDislikeAnimating}
        setIsAnimating={setIsDislikeAnimating}
        showBubble={showDislikeBubble}
        setShowBubble={setShowDislikeBubble}
        onClick={handleClick}
        disabled={loading === UserReaction.DISLIKE || finalDisabled}
        align="left"
        isTimeDisabled={!canVote}
      />
    </div>
  );
};