@rest-api/react-models/src/models/State.js

[](https://www.npmjs.com/package/@rest-api/react-models) [](https://codecov.io/gh/hector7/rest-

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.State = exports.ModelState = void 0;
const INIT_REQUEST = {
    didInvalidate: true,
    error: null,
    isFetching: false,
    lastUpdated: null,
    result: null,
    initialized: false
};
class ModelState {
    constructor(r) {
        this.observers = [];
        this._state = { searchs: {}, ids: {} };
        this.model = r.model;
    }
    get modelName() {
        return this.model.name;
    }
    get state() {
        return this._state;
    }
    addKeyModel(key) {
        if (!this._state.ids.hasOwnProperty(key))
            this._state.ids[key] = {};
    }
    attach(observer) {
        this.observers.push(observer);
    }
    detach(observer) {
        this.observers = this.observers.splice(this.observers.indexOf(observer), 1);
    }
    notify() {
        this.observers.forEach(o => o.update(this));
    }
    getRequest(url) {
        const request = this._state.searchs[url];
        if (request === undefined) {
            return INIT_REQUEST;
        }
        return request;
    }
    getRequestById(key, id) {
        const request = this._state.ids[key][id];
        if (request === undefined) {
            return INIT_REQUEST;
        }
        return request;
    }
    /**
     * updateGet for an internal use
     */
    updateGet(url, request) {
        const modelBranchSearchs = this._state.searchs;
        this._state.searchs = Object.assign(Object.assign({}, modelBranchSearchs), { [url]: Object.assign(Object.assign({}, INIT_REQUEST), request) });
    }
    /**
     * updateGetById for an internal use
     */
    updateGetById(key, id, request) {
        const modelBranchIds = this._state.ids[key];
        this._state.ids[key] = Object.assign(Object.assign({}, modelBranchIds), { [id]: Object.assign(Object.assign({}, INIT_REQUEST), request) });
    }
}
exports.ModelState = ModelState;
class State {
    constructor() {
        this.observers = [];
        this._state = {};
    }
    //TODO attach to all modelstates.
    get state() {
        return this._state;
    }
    attach(observer) {
        this.observers.push(observer);
    }
    detach(observer) {
        this.observers = this.observers.splice(this.observers.indexOf(observer), 1);
    }
    notify() {
        this.observers.forEach(o => o.update(this));
    }
    update(subject) {
        this.state[subject.modelName] = subject.state;
        this.notify();
    }
}
exports.State = State;
exports.default = new State();