jiti-meet/react/features/polls/reducer.ts

160 lines
3.8 KiB
TypeScript

import ReducerRegistry from '../base/redux/ReducerRegistry';
import {
CHANGE_VOTE,
CLEAR_POLLS,
RECEIVE_ANSWER,
RECEIVE_POLL,
REGISTER_VOTE,
RESET_NB_UNREAD_POLLS,
RETRACT_VOTE
} from './actionTypes';
import { IAnswer, IPoll } from './types';
const INITIAL_STATE = {
polls: {},
// Number of not read message
nbUnreadPolls: 0
};
export interface IPollsState {
nbUnreadPolls: number;
polls: {
[pollId: string]: IPoll;
};
}
ReducerRegistry.register<IPollsState>('features/polls', (state = INITIAL_STATE, action): IPollsState => {
switch (action.type) {
case CHANGE_VOTE: {
const { pollId, value } = action;
return {
...state,
polls: {
...state.polls,
[pollId]: {
...state.polls[pollId],
changingVote: value,
showResults: !value
}
}
};
}
case CLEAR_POLLS: {
return {
...state,
...INITIAL_STATE
};
}
// Reducer triggered when a poll is received
case RECEIVE_POLL: {
const newState = {
...state,
polls: {
...state.polls,
// The poll is added to the dictionary of received polls
[action.pollId]: action.poll
},
nbUnreadPolls: state.nbUnreadPolls + 1
};
return newState;
}
// Reducer triggered when an answer is received
// The answer is added to an existing poll
case RECEIVE_ANSWER: {
const { pollId, answer }: { answer: IAnswer; pollId: string; } = action;
// if the poll doesn't exist
if (!(pollId in state.polls)) {
console.warn('requested poll does not exist: pollId ', pollId);
return state;
}
// if the poll exists, we update it with the incoming answer
const newAnswers = state.polls[pollId].answers
.map(_answer => {
return {
name: _answer.name,
voters: new Map(_answer.voters)
};
});
for (let i = 0; i < newAnswers.length; i++) {
// if the answer was chosen, we add the sender to the set of voters of this answer
const voters = newAnswers[i].voters;
if (answer.answers[i]) {
voters.set(answer.voterId, answer.voterName);
} else {
voters.delete(answer.voterId);
}
}
// finally we update the state by returning the updated poll
return {
...state,
polls: {
...state.polls,
[pollId]: {
...state.polls[pollId],
answers: newAnswers
}
}
};
}
case REGISTER_VOTE: {
const { answers, pollId }: { answers: Array<boolean> | null; pollId: string; } = action;
return {
...state,
polls: {
...state.polls,
[pollId]: {
...state.polls[pollId],
changingVote: false,
lastVote: answers,
showResults: true
}
}
};
}
case RETRACT_VOTE: {
const { pollId }: { pollId: string; } = action;
return {
...state,
polls: {
...state.polls,
[pollId]: {
...state.polls[pollId],
showResults: false
}
}
};
}
case RESET_NB_UNREAD_POLLS: {
return {
...state,
nbUnreadPolls: 0
};
}
default:
return state;
}
});