59 lines
1.2 KiB
JavaScript
59 lines
1.2 KiB
JavaScript
import * as I from 'immutable';
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export class StateSynchronizer {
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constructor(statefuls) {
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this._state = I.Map();
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this._statefuls = statefuls;
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this.tick();
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}
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static nextStep(step) {
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const {path, op, value} = step;
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const parts = path.split('/');
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const [key] = parts.splice(1, 1);
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const subpath = parts.join('/');
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return [key, {
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op,
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path: subpath ? subpath : '/',
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value,
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}];
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}
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patchState(patch) {
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const stepMap = {};
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for (const {op, path, value} of patch) {
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const parts = path.split('/');
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const [key] = parts.splice(1, 1);
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if (!stepMap[key]) {
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stepMap[key] = [];
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}
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const subpath = parts.join('/');
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stepMap[key].push({
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op,
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path: subpath ? subpath : '/',
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value,
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});
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}
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for (const key in stepMap) {
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const stateful = this._statefuls[key];
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if (!stateful) {
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continue;
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}
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stateful.patchState(stepMap[key]);
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}
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}
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get state() {
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return this._state;
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}
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tick() {
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for (const key in this._statefuls) {
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const stateful = this._statefuls[key];
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this._state = this._state.set(key, stateful.state);
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}
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}
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}
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