smartcli/ts/smartcli.classes.smartcli.ts
2017-04-23 15:21:08 +02:00

162 lines
3.9 KiB
TypeScript

import * as smartq from 'smartq'
import { Subject } from 'rxjs'
import * as plugins from './smartcli.plugins'
// import classes
import { Objectmap } from 'lik'
// interfaces
export interface ICommandPromiseObject {
commandName: string,
promise: Promise<void>
}
export interface ITriggerObservableObject {
triggerName: string
subject: Subject<any>
}
export class Smartcli {
argv: any
questionsDone
parseStarted: smartq.Deferred<any>
commands
questions
version: string
/**
* map of all Command/Promise objects to keep track
*/
allCommandPromisesMap = new Objectmap<ICommandPromiseObject>()
/**
* map of all Trigger/Observable objects to keep track
*/
allTriggerObservablesMap = new Objectmap<ITriggerObservableObject>()
constructor () {
this.argv = plugins.yargs
this.questionsDone = smartq.defer()
this.parseStarted = smartq.defer()
}
/**
* adds an alias, meaning one equals the other in terms of command execution.
*/
addCommandAlias(keyArg, aliasArg): void {
this.argv = this.argv.alias(keyArg, aliasArg)
return
}
/**
* adds a Command by returning a Promise that reacts to the specific commandString given.
* Note: in e.g. "npm install something" the "install" is considered the command.
*/
addCommand(commandNameArg: string): Promise<any> {
let done = smartq.defer<any>()
this.allCommandPromisesMap.add({
commandName: commandNameArg,
promise: done.promise
})
this.parseStarted.promise
.then(() => {
if (this.argv._.indexOf(commandNameArg) === 0) {
done.resolve(this.argv)
}
})
return done.promise
}
/**
* gets a Promise for a command word
*/
getCommandPromiseByName(commandNameArg: string): Promise<void> {
return this.allCommandPromisesMap.find(commandDeferredObjectArg => {
return commandDeferredObjectArg.commandName === commandNameArg
}).promise
}
/**
* adds a Trigger. Like addCommand(), but returns an subscribable observable
*/
addTrigger(triggerNameArg: string) {
let triggerSubject = new Subject<any>()
this.allTriggerObservablesMap.add({
triggerName: triggerNameArg,
subject: triggerSubject
})
this.addCommand(triggerNameArg).then(() => {
triggerSubject.next(this.argv)
})
return triggerSubject
}
/**
* execute trigger by name
* @param commandNameArg - the name of the command to trigger
*/
trigger(triggerName: string) {
let triggerSubject = this.allTriggerObservablesMap.find(triggerObservableObjectArg => {
return triggerObservableObjectArg.triggerName === triggerName
}).subject
triggerSubject.next(this.argv)
return triggerSubject
}
/**
* allows to specify help text to be printed above the rest of the help text
*/
addHelp(optionsArg: {
helpText: string
}) {
this.addCommand('help').then(argvArg => {
plugins.beautylog.log(optionsArg.helpText)
})
}
/**
* specify version to be printed for -v --version
*/
addVersion(versionArg: string) {
this.version = versionArg
this.addCommandAlias('v', 'version')
this.parseStarted.promise
.then(() => {
if (this.argv.v) {
console.log(this.version)
}
})
}
/**
* returns promise that is resolved when no commands are specified
*/
standardTask(): Promise<any> {
let done = smartq.defer<any>()
this.allCommandPromisesMap.add({
commandName: 'standard',
promise: done.promise
})
this.parseStarted.promise
.then(() => {
if (this.argv._.length === 0 && !this.argv.v) {
done.resolve(this.argv)
} else {
done.reject(this.argv)
}
})
return done.promise
}
/**
* start the process of evaluating commands
*/
startParse(): void {
this.argv = this.argv.argv
this.parseStarted.resolve()
return
}
}