122 lines
3.6 KiB
JavaScript
122 lines
3.6 KiB
JavaScript
// @flow
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import React, { useCallback, useMemo, useState } from 'react';
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import type { AbstractComponent } from 'react';
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import { useTranslation } from 'react-i18next';
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import { useDispatch, useSelector } from 'react-redux';
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import { sendAnalytics, createPollEvent } from '../../analytics';
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import { getParticipantById } from '../../base/participants/functions';
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import { useBoundSelector } from '../../base/util/hooks';
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import { setVoteChanging } from '../actions';
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import { getPoll } from '../functions';
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/**
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* The type of the React {@code Component} props of inheriting component.
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*/
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type InputProps = {
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/**
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* ID of the poll to display.
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*/
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pollId: string,
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};
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export type AnswerInfo = {
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name: string,
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percentage: number,
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voters?: Array<{ id: number, name: string }>,
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voterCount: number
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};
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/**
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* The type of the React {@code Component} props of {@link AbstractPollResults}.
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*/
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export type AbstractProps = {
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answers: Array<AnswerInfo>,
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changeVote: Function,
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creatorName: string,
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showDetails: boolean,
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question: string,
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t: Function,
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toggleIsDetailed: Function,
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haveVoted: boolean,
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};
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/**
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* Higher Order Component taking in a concrete PollResult component and
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* augmenting it with state/behavior common to both web and native implementations.
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*
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* @param {React.AbstractComponent} Component - The concrete component.
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* @returns {React.AbstractComponent}
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*/
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const AbstractPollResults = (Component: AbstractComponent<AbstractProps>) => (props: InputProps) => {
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const { pollId } = props;
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const pollDetails = useSelector(getPoll(pollId));
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const participant = useBoundSelector(getParticipantById, pollDetails.senderId);
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const [ showDetails, setShowDetails ] = useState(false);
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const toggleIsDetailed = useCallback(() => {
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sendAnalytics(createPollEvent('vote.detailsViewed'));
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setShowDetails(!showDetails);
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});
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const answers: Array<AnswerInfo> = useMemo(() => {
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const voterSet = new Set();
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// Getting every voters ID that participates to the poll
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for (const answer of pollDetails.answers) {
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for (const [ voterId ] of answer.voters) {
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voterSet.add(voterId);
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}
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}
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const totalVoters = voterSet.size;
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return pollDetails.answers.map(answer => {
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const percentage = totalVoters === 0 ? 0 : Math.round(answer.voters.size / totalVoters * 100);
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let voters = null;
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if (showDetails) {
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voters = [ ...answer.voters ].map(([ id, name ]) => {
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return {
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id,
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name
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};
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});
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}
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return {
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name: answer.name,
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percentage,
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voters,
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voterCount: answer.voters.size
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};
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});
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}, [ pollDetails.answers, showDetails ]);
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const dispatch = useDispatch();
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const changeVote = useCallback(() => {
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dispatch(setVoteChanging(pollId, true));
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sendAnalytics(createPollEvent('vote.changed'));
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}, [ dispatch, pollId ]);
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const { t } = useTranslation();
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return (
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<Component
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answers = { answers }
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changeVote = { changeVote }
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creatorName = { participant ? participant.name : '' }
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haveVoted = { pollDetails.lastVote !== null }
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question = { pollDetails.question }
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showDetails = { showDetails }
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t = { t }
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toggleIsDetailed = { toggleIsDetailed } />
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);
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};
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export default AbstractPollResults;
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