100 lines
2.6 KiB
TypeScript
100 lines
2.6 KiB
TypeScript
import * as plugins from './smartchok.plugins';
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import { Stringmap } from '@pushrocks/lik';
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import { Observablemap } from '@pushrocks/smartrx';
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export type TSmartchokStatus = 'idle' | 'starting' | 'watching';
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export type TFsEvent =
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| 'add'
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| 'addDir'
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| 'change'
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| 'error'
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| 'unlink'
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| 'unlinkDir'
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| 'ready'
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| 'raw';
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/**
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* Smartchok allows easy wathcing of files
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*/
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export class Smartchok {
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watchStringmap = new Stringmap();
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chokidarOptions: plugins.chokidar.WatchOptions;
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status: TSmartchokStatus = 'idle';
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private watcher: plugins.chokidar.FSWatcher;
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private watchingDeferred = plugins.smartpromise.defer<void>(); // used to run things when watcher is initialized
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private eventObservablemap = new plugins.smartrx.Observablemap(); // register one observable per event
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/**
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* constructor of class smartchok
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*/
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constructor(watchArrayArg: string[], optionsArg: plugins.chokidar.WatchOptions = {}) {
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this.watchStringmap.addStringArray(watchArrayArg);
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this.chokidarOptions = optionsArg;
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}
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/**
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* adds files to the list of watched files
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*/
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add(pathArrayArg: string[]) {
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this.watchStringmap.addStringArray(pathArrayArg);
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}
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/**
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* removes files from the list of watched files
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*/
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remove(pathArg: string) {
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this.watchStringmap.removeString(pathArg);
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}
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/**
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* gets an observable for a certain event
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*/
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getObservableFor(fsEvent: TFsEvent): Promise<plugins.smartrx.rxjs.Observable<any>> {
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let done = plugins.smartpromise.defer<plugins.smartrx.rxjs.Observable<any>>();
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this.watchingDeferred.promise.then(() => {
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let eventObservable = this.eventObservablemap.getObservableForEmitterEvent(
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this.watcher,
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fsEvent
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);
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done.resolve(eventObservable);
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});
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return done.promise;
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}
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/**
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* starts the watcher
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* @returns Promise<void>
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*/
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start(): Promise<void> {
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let done = plugins.smartpromise.defer<void>();
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this.status = 'starting';
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this.watcher = plugins.chokidar.watch(
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this.watchStringmap.getStringArray(),
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this.chokidarOptions
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);
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this.watcher.on('ready', () => {
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this.status = 'watching';
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this.watchingDeferred.resolve();
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done.resolve();
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});
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return done.promise;
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}
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/**
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* stop the watcher process if watching
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*/
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stop() {
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let closeWatcher = () => {
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this.watcher.close();
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};
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if (this.status === 'watching') {
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console.log('closing while watching');
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closeWatcher();
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} else if (this.status === 'starting') {
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this.watchingDeferred.promise.then(() => {
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closeWatcher();
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});
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}
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}
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}
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