145 lines
3.7 KiB
JavaScript
Executable file
145 lines
3.7 KiB
JavaScript
Executable file
import isPlainObject from 'lodash/isPlainObject.js';
|
|
import get from 'lodash/get.js';
|
|
import set from 'lodash/set.js';
|
|
|
|
const _ = {
|
|
isPlainObject,
|
|
set,
|
|
get,
|
|
};
|
|
import { defer, empty, from, of, concatMap, filter, publish, reduce } from 'rxjs';
|
|
import runAsync from 'run-async';
|
|
import * as utils from '../utils/utils.js';
|
|
import Base from './baseUI.js';
|
|
|
|
/**
|
|
* Base interface class other can inherits from
|
|
*/
|
|
export default class PromptUI extends Base {
|
|
constructor(prompts, opt) {
|
|
super(opt);
|
|
this.prompts = prompts;
|
|
}
|
|
|
|
run(questions, answers) {
|
|
// Keep global reference to the answers
|
|
if (_.isPlainObject(answers)) {
|
|
this.answers = { ...answers };
|
|
} else {
|
|
this.answers = {};
|
|
}
|
|
|
|
// Make sure questions is an array.
|
|
if (_.isPlainObject(questions)) {
|
|
// It's either an object of questions or a single question
|
|
questions = Object.values(questions).every(
|
|
(v) => _.isPlainObject(v) && v.name === undefined,
|
|
)
|
|
? Object.entries(questions).map(([name, question]) => ({ name, ...question }))
|
|
: [questions];
|
|
}
|
|
|
|
// Create an observable, unless we received one as parameter.
|
|
// Note: As this is a public interface, we cannot do an instanceof check as we won't
|
|
// be using the exact same object in memory.
|
|
const obs = Array.isArray(questions) ? from(questions) : questions;
|
|
|
|
this.process = obs.pipe(
|
|
concatMap(this.processQuestion.bind(this)),
|
|
publish(), // Creates a hot Observable. It prevents duplicating prompts.
|
|
);
|
|
|
|
this.process.connect();
|
|
|
|
return this.process
|
|
.pipe(
|
|
reduce((answersObj, answer) => {
|
|
_.set(answersObj, answer.name, answer.answer);
|
|
return answersObj;
|
|
}, this.answers),
|
|
)
|
|
.toPromise(Promise)
|
|
.then(this.onCompletion.bind(this), this.onError.bind(this));
|
|
}
|
|
|
|
/**
|
|
* Once all prompt are over
|
|
*/
|
|
onCompletion() {
|
|
this.close();
|
|
|
|
return this.answers;
|
|
}
|
|
|
|
onError(error) {
|
|
this.close();
|
|
return Promise.reject(error);
|
|
}
|
|
|
|
processQuestion(question) {
|
|
question = { ...question };
|
|
return defer(() => {
|
|
const obs = of(question);
|
|
|
|
return obs.pipe(
|
|
concatMap(this.setDefaultType.bind(this)),
|
|
concatMap(this.filterIfRunnable.bind(this)),
|
|
concatMap(() =>
|
|
utils.fetchAsyncQuestionProperty(question, 'message', this.answers),
|
|
),
|
|
concatMap(() =>
|
|
utils.fetchAsyncQuestionProperty(question, 'default', this.answers),
|
|
),
|
|
concatMap(() =>
|
|
utils.fetchAsyncQuestionProperty(question, 'choices', this.answers),
|
|
),
|
|
concatMap(this.fetchAnswer.bind(this)),
|
|
);
|
|
});
|
|
}
|
|
|
|
fetchAnswer(question) {
|
|
const Prompt = this.prompts[question.type];
|
|
this.activePrompt = new Prompt(question, this.rl, this.answers);
|
|
return defer(() =>
|
|
from(this.activePrompt.run().then((answer) => ({ name: question.name, answer }))),
|
|
);
|
|
}
|
|
|
|
setDefaultType(question) {
|
|
// Default type to input
|
|
if (!this.prompts[question.type]) {
|
|
question.type = 'input';
|
|
}
|
|
|
|
return defer(() => of(question));
|
|
}
|
|
|
|
filterIfRunnable(question) {
|
|
if (
|
|
question.askAnswered !== true &&
|
|
_.get(this.answers, question.name) !== undefined
|
|
) {
|
|
return empty();
|
|
}
|
|
|
|
if (question.when === false) {
|
|
return empty();
|
|
}
|
|
|
|
if (typeof question.when !== 'function') {
|
|
return of(question);
|
|
}
|
|
|
|
const { answers } = this;
|
|
return defer(() =>
|
|
from(
|
|
runAsync(question.when)(answers).then((shouldRun) => {
|
|
if (shouldRun) {
|
|
return question;
|
|
}
|
|
}),
|
|
).pipe(filter((val) => val != null)),
|
|
);
|
|
}
|
|
}
|