function selectedScore(methods, assessmentMethod) {
	const method = (methods || []).find(item => String(item.assessmentMethod) === assessmentMethod)
	const option = method && (method.questionOption || []).find(item => item.questionOption === method.answer)
	return option && Number.isFinite(Number(option.number)) ? Number(option.number) : null
}

function validateFutureExpectation(methods) {
	const currentScore = selectedScore(methods, '1')
	const futureScore = selectedScore(methods, '2')
	if (currentScore === null || futureScore === null || futureScore < currentScore) {
		return '一年后期待分不得低于现状评分，请注意！'
	}
	return ''
}

const AGREEMENT_OPTIONS = {
	1: '1-强烈不同意(Strongly disagree)',
	2: '2-不同意(Disagree)',
	3: '3-中立(Neutral)',
	4: '4-同意(Agree)',
	5: '5-完全同意(Totally agree)'
}

function normalizeFutureExpectationOptions(methods) {
	return (methods || []).map(method => {
		if (String(method.assessmentMethod) !== '2') return method
		return Object.assign({}, method, {
			questionOption: (method.questionOption || []).map(option => {
				const text = AGREEMENT_OPTIONS[option.number]
				return text ? Object.assign({}, option, { questionOption: text }) : option
			})
		})
	})
}

module.exports = { validateFutureExpectation, normalizeFutureExpectationOptions }