smartchok/ts/smartchok.classes.smartchok.ts

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2017-06-30 16:05:55 +00:00
import * as plugins from './smartchok.plugins'
import { Stringmap } from 'lik'
export type TSmartchokStatus = 'idle' | 'starting' | 'watching'
export type TFsEvent = 'add' | 'addDir' | 'change' | 'error' | 'unlink' | 'unlinkDir' | 'ready' | 'raw'
/**
* Smartchok allows easy wathcing of files
*/
export class Smartchok {
watchStringmap = new Stringmap()
chokidarOptions: plugins.chokidar.WatchOptions
status: TSmartchokStatus = 'idle'
private watcher
private watchingDeferred = plugins.q.defer<void>() // used to run things when watcher is initialized
private eventObservablemap = new plugins.lik.Observablemap() // register one observable per event
/**
* constructor of class smartchok
*/
constructor (watchArrayArg: string[], optionsArg: plugins.chokidar.WatchOptions = {}) {
this.watchStringmap.addStringArray(watchArrayArg)
this.chokidarOptions = optionsArg
}
/**
* adds files to the list of watched files
*/
add(pathArrayArg: string[]) {
this.watchStringmap.addStringArray(pathArrayArg)
}
/**
* removes files from the list of watched files
*/
remove (pathArg: string) {
this.watchStringmap.removeString(pathArg)
}
/**
* gets an observable for a certain event
*/
getObservableFor (fsEvent: TFsEvent): plugins.q.Promise<plugins.rx.Observable<any>> {
let done = plugins.q.defer<plugins.rx.Observable<any>>()
this.watchingDeferred.promise.then(() => {
let eventObservable = this.eventObservablemap.getObservableForEmitterEvent(this.watcher, fsEvent)
done.resolve(eventObservable)
})
return done.promise
}
/**
* starts the watcher
* @returns Promise<void>
*/
start(): plugins.q.Promise<void> {
let done = plugins.q.defer<void>()
this.status = 'starting'
this.watcher = plugins.chokidar.watch(this.watchStringmap.getStringArray(), this.chokidarOptions)
this.watcher.on('ready', () => {
this.status = 'watching'
this.watchingDeferred.resolve()
done.resolve()
})
return done.promise
}
/**
* stop the watcher process if watching
*/
stop() {
let closeWatcher = () => {
this.watcher.close()
}
if (this.status === 'watching') {
console.log('closing while watching')
closeWatcher()
} else if (this.status === 'starting') {
this.watchingDeferred.promise.then(() => { closeWatcher() })
}
}
}