32 lines
805 B
JavaScript
32 lines
805 B
JavaScript
import { ADD_MESSAGE, REMOVE_OLDEST_MESSAGE } from '../actions/message.actions';
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const initialState = {
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sortedByTimestamp: []
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};
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export function messagesReducer(state = initialState, action) {
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switch(action.type) {
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case ADD_MESSAGE:
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return handleAddMessage(state, action);
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case REMOVE_OLDEST_MESSAGE:
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return handleRemoveOldestMessage(state, action);
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}
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return state;
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}
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function handleAddMessage(state, action) {
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return {
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...state,
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sortedByTimestamp: [
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{ ts: Date.now(), text: action.text, type: action.messageType },
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...state.sortedByTimestamp
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]
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};
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}
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function handleRemoveOldestMessage(state, action) {
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return {
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...state,
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sortedByTimestamp: state.sortedByTimestamp.slice(0, -1)
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};
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} |