import { assertPlainPayload } from './request-normalizers.js'

export const FEEDBACK_TYPE_OPTIONS = Object.freeze([
  Object.freeze({ value: 'bug', label: '功能问题' }),
  Object.freeze({ value: 'advice', label: '使用建议' }),
  Object.freeze({ value: 'complaint', label: '投诉反馈' }),
  Object.freeze({ value: 'other', label: '其他' })
])

const feedbackTypes = new Set(FEEDBACK_TYPE_OPTIONS.map(({ value }) => value))

export const normalizeFeedbackPayload = (payload) => {
  const allowedFields = new Set(['feedbackType', 'feedbackContent', 'contactInfo'])
  assertPlainPayload(payload, allowedFields, '反馈请求')
  if (typeof payload.feedbackContent !== 'string' || !payload.feedbackContent.trim()) {
    throw new TypeError('反馈内容必须是非空字符串')
  }
  const normalizedPayload = { feedbackContent: payload.feedbackContent.trim() }
  for (const optionalField of ['feedbackType', 'contactInfo']) {
    if (!Object.prototype.hasOwnProperty.call(payload, optionalField)) continue
    if (typeof payload[optionalField] !== 'string') {
      throw new TypeError(`反馈字段 ${optionalField} 必须是字符串`)
    }
    const normalizedText = payload[optionalField].trim()
    if (!normalizedText) continue
    if (optionalField === 'feedbackType' && !feedbackTypes.has(normalizedText)) {
      throw new TypeError('feedbackType 必须为 advice、bug、complaint 或 other')
    }
    normalizedPayload[optionalField] = normalizedText
  }
  return normalizedPayload
}