import { BookingDetail, Day, Draft, Project, Slot } from './types.uts'

const DRAFT_KEY = 'sf_booking_draft'
const LAST_BOOKING_KEY = 'sf_last_booking'

export function emptyDraft(): Draft {
  return {
    project: null,
    day: null,
    date: '',
    slot: null,
    phone: ''
  } as Draft
}

export function getDraft(): Draft {
  const raw = uni.getStorageSync(DRAFT_KEY)
  if (raw == null || raw == '') return emptyDraft()
  const draft = raw as Draft
  if (draft.phone == null) draft.phone = ''
  if (draft.date == null) draft.date = ''
  return draft
}

export function saveDraft(draft: Draft): Draft {
  uni.setStorageSync(DRAFT_KEY, draft)
  return draft
}

export function clearDraft(): void {
  const phone = getDraft().phone
  uni.removeStorageSync(DRAFT_KEY)
  if (phone.length > 0) {
    saveDraft({
      project: null,
      day: null,
      date: '',
      slot: null,
      phone
    } as Draft)
  }
}

export function setProject(project: Project): Draft {
  const draft = getDraft()
  const next = {
    project: {
      id: project.id,
      category_id: project.category_id,
      name: project.name,
      subtitle: project.subtitle,
      price_text: project.price_text,
      image: project.image,
      image_key: project.image_key,
      sortIndex: project.sortIndex
    } as Project,
    day: null,
    date: '',
    slot: null,
    phone: draft.phone
  } as Draft
  return saveDraft(next)
}

export function setSchedule(day: Day, slot: Slot): Draft {
  const draft = getDraft()
  const nextDay = {
    date: day.date,
    status: day.status,
    slots: []
  } as Day
  const nextSlot = {
    id: slot.id,
    start_time: slot.start_time,
    status: slot.status
  } as Slot
  const next = {
    project: draft.project,
    day: nextDay,
    date: nextDay.date,
    slot: nextSlot,
    phone: draft.phone
  } as Draft
  return saveDraft(next)
}

export function setPhone(phone: string): Draft {
  const draft = getDraft()
  draft.phone = phone
  return saveDraft(draft)
}

export function setLastBooking(detail: BookingDetail): void {
  uni.setStorageSync(LAST_BOOKING_KEY, detail)
}

export function getLastBooking(): BookingDetail | null {
  const raw = uni.getStorageSync(LAST_BOOKING_KEY)
  if (raw == null || raw == '') return null
  return raw as BookingDetail
}