45 lines
1.0 KiB
TypeScript
45 lines
1.0 KiB
TypeScript
import {BehaviorSubject} from 'rxjs/BehaviorSubject';
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import {User} from '../../models/model-interfaces';
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export const LOAD = 'LOAD';
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export const ADD = 'ADD';
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export const EDIT = 'EDIT';
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export const REMOVE = 'REMOVE';
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export class UserStore {
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private users: User[] = [];
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items$ = new BehaviorSubject<User[]>([]);
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dispatch(action) {
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this.users = this._reduce(this.users, action);
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this.items$.next(this.users);
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}
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_reduce(users: User[], action) {
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switch (action.type) {
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case LOAD:
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return [...action.data];
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case ADD:
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if (action.data instanceof Array) {
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return users.concat(action.data);
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}
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return [...users, action.data];
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case EDIT:
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return users.map(user => {
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const editedUser = action.data;
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if (user._id !== editedUser._id) {
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return user;
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}
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return editedUser;
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});
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case REMOVE:
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return users.filter(user => user._id !== action.data._id);
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default:
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return users;
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}
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}
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}
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