130 lines
3.5 KiB
TypeScript
130 lines
3.5 KiB
TypeScript
import _ from 'lodash';
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import ReducerRegistry from '../base/redux/ReducerRegistry';
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import {
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INIT_SEARCH,
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UPDATE_STATS,
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INIT_REORDER_STATS,
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RESET_SEARCH_CRITERIA,
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TOGGLE_FACE_EXPRESSIONS
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} from './actionTypes';
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/**
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* The initial state of the feature speaker-stats.
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*
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* @type {Object}
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*/
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const INITIAL_STATE = {
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stats: {},
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isOpen: false,
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pendingReorder: true,
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criteria: null,
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showFaceExpressions: false
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};
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export interface ISpeakerStatsState {
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criteria: string | null;
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isOpen: boolean;
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pendingReorder: boolean;
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showFaceExpressions: boolean;
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stats: Object;
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}
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ReducerRegistry.register<ISpeakerStatsState>('features/speaker-stats',
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(state = INITIAL_STATE, action): ISpeakerStatsState => {
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switch (action.type) {
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case INIT_SEARCH:
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return _updateCriteria(state, action);
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case UPDATE_STATS:
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return _updateStats(state, action);
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case INIT_REORDER_STATS:
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return _initReorderStats(state);
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case RESET_SEARCH_CRITERIA:
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return _updateCriteria(state, { criteria: null });
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case TOGGLE_FACE_EXPRESSIONS: {
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return {
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...state,
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showFaceExpressions: !state.showFaceExpressions
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};
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}
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}
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return state;
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});
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/**
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* Reduces a specific Redux action INIT_SEARCH of the feature
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* speaker-stats.
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*
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* @param {Object} state - The Redux state of the feature speaker-stats.
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* @param {Action} action - The Redux action INIT_SEARCH to reduce.
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* @private
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* @returns {Object} The new state after the reduction of the specified action.
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*/
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function _updateCriteria(state: ISpeakerStatsState, { criteria }: { criteria: string | null; }) {
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return _.assign(
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{},
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state,
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{ criteria }
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);
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}
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/**
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* Reduces a specific Redux action UPDATE_STATS of the feature
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* speaker-stats.
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* The speaker stats order is based on the stats object properties.
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* When updating without reordering, the new stats object properties are reordered
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* as the last in state, otherwise the order would be lost on each update.
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* If there was already a pending reorder, the stats object properties already have
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* the correct order, so the property order is not changing.
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*
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* @param {Object} state - The Redux state of the feature speaker-stats.
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* @param {Action} action - The Redux action UPDATE_STATS to reduce.
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* @private
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* @returns {Object} - The new state after the reduction of the specified action.
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*/
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function _updateStats(state: ISpeakerStatsState, { stats }: { stats: any; }) {
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const finalStats = state.pendingReorder ? stats : state.stats;
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if (!state.pendingReorder) {
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// Avoid reordering the speaker stats object properties
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const finalKeys = Object.keys(stats);
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finalKeys.forEach(newStatId => {
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finalStats[newStatId] = _.clone(stats[newStatId]);
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});
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Object.keys(finalStats).forEach(key => {
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if (!finalKeys.includes(key)) {
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delete finalStats[key];
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}
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});
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}
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return _.assign(
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{},
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state,
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{
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stats: { ...finalStats },
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pendingReorder: false
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}
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);
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}
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/**
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* Reduces a specific Redux action INIT_REORDER_STATS of the feature
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* speaker-stats.
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*
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* @param {Object} state - The Redux state of the feature speaker-stats.
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* @private
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* @returns {Object} The new state after the reduction of the specified action.
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*/
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function _initReorderStats(state: ISpeakerStatsState) {
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return _.assign(
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{},
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state,
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{ pendingReorder: true }
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);
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}
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