143 lines
3.2 KiB
JavaScript
Executable file
143 lines
3.2 KiB
JavaScript
Executable file
'use strict'
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const logQueue = require('./log-queue')
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let questions
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let currentQuestion
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let answers
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let currentOptions
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let currentOptionsPointer
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let currentQuestionId
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let done
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class StateMachine {
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constructor (rli, colors) {
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this.rli = rli
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this.colors = colors
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}
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showPrompt () {
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this.rli.write(this.colors.ANSWER)
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this.rli.prompt()
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}
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onKeypress (key) {
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if (!currentOptions || !key) {
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return
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}
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if (key.name === 'tab' || key.name === 'right' || key.name === 'down') {
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this.suggestOption(currentOptionsPointer + 1)
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} else if (key.name === 'left' || key.name === 'up') {
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this.suggestOption(currentOptionsPointer - 1)
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}
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if (!key.ctrl && !key.meta && key.name !== 'enter' && key.name !== 'return') {
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key.name = 'escape'
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}
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}
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suggestOption (index) {
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if (!currentOptions) {
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return
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}
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if (index === -1) {
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currentOptionsPointer = currentOptions.length - 1
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} else if (index === currentOptions.length) {
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currentOptionsPointer = 0
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} else {
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currentOptionsPointer = index
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}
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this.rli._deleteLineLeft()
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this.rli._deleteLineRight()
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this.rli.write(currentOptions[currentOptionsPointer])
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}
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kill () {
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currentOptions = null
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currentQuestionId = null
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this.rli.write('\n' + this.colors.RESET + '\n')
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this.rli.close()
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}
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onLine (line) {
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if (currentQuestionId) {
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this.rli.write(this.colors.RESET)
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line = line.trim().replace(this.colors.ANSWER, '').replace(this.colors.RESET, '')
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if (currentOptions) {
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currentOptionsPointer = currentOptions.indexOf(line)
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if (currentOptionsPointer === -1) {
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return
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}
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}
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if (line === '') {
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line = null
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}
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if (currentQuestion.boolean) {
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line = (line === 'yes' || line === 'true' || line === 'on')
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}
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if (line !== null && currentQuestion.validate) {
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currentQuestion.validate(line)
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}
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if (currentQuestion.multiple) {
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answers[currentQuestionId] = answers[currentQuestionId] || []
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if (line !== null) {
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answers[currentQuestionId].push(line)
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this.showPrompt()
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if (currentOptions) {
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currentOptions.splice(currentOptionsPointer, 1)
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currentOptionsPointer = -1
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}
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} else {
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this.nextQuestion()
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}
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} else {
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answers[currentQuestionId] = line
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this.nextQuestion()
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}
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}
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}
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nextQuestion () {
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currentQuestion = questions.shift()
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while (currentQuestion && currentQuestion.condition && !currentQuestion.condition(answers)) {
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currentQuestion = questions.shift()
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}
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logQueue.printLogQueue()
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if (currentQuestion) {
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currentQuestionId = null
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this.rli.write('\n' + this.colors.question(currentQuestion.question) + '\n')
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this.rli.write(currentQuestion.hint + '\n')
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this.showPrompt()
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currentOptions = currentQuestion.options || null
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currentQuestionId = currentQuestion.id
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this.suggestOption(0)
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} else {
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this.kill()
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done(answers)
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}
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}
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process (_questions, _done) {
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questions = _questions
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answers = {}
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done = _done
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this.nextQuestion()
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}
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}
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module.exports = StateMachine
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