import type { EventWizardFormData } from '@/components/events/create/consumer/types'
import { createClientId } from '@/lib/createClientId'
import type { EventAgeRestriction, EventGenderRestriction } from '@/lib/eventAudience'
import type { CreatedEvent, EventRevisionPayload } from '@/services/events'
import type { EventFaq, EventMedia } from '@/services/eventDetail'

function splitIsoToDateAndMinutes(iso: string): { date: string; minutes: number } {
  const d = new Date(iso)

  return {
    date: d.toISOString(),
    minutes: d.getHours() * 60 + d.getMinutes(),
  }
}

function mapMediaToStaged(media: EventMedia[]): EventWizardFormData['media'] {
  return media
    .filter((item) => item.mediaType === 'image')
    .map((item, index) => ({
      // نگه داشتن id سرور برای sync create/update/delete در ویرایش non-live
      id: item.id,
      url: item.url,
      isPoster: item.isPoster,
      isSquarePoster: Boolean(item.isSquarePoster),
      sortOrder: item.sortOrder ?? index,
    }))
}

function mapFaqsToStaged(faqs: EventFaq[]): EventWizardFormData['faqs'] {
  return faqs.map((faq) => ({
    id: faq.id,
    question: faq.question,
    answer: faq.answer,
  }))
}

/**
 * Maps an existing event (plus media/FAQs) into edit-wizard form values.
 * Unlike clone, keeps the real title (no clone suffix).
 */
export function mapEventToEditWizardData(event: CreatedEvent, media: EventMedia[], faqs: EventFaq[]): EventWizardFormData {
  const start = splitIsoToDateAndMinutes(String(event.startsAt))
  const end = splitIsoToDateAndMinutes(String(event.endsAt))

  return {
    title: event.title,
    slug: event.slug,
    categoryId: String(event.categoryId),
    shortDescription: event.shortDescription ?? '',
    description: event.description ?? '',
    media: mapMediaToStaged(media),
    startDate: start.date,
    startTime: start.minutes,
    endDate: end.date,
    endTime: end.minutes,
    provinceId: String(event.provinceId),
    cityId: String(event.cityId),
    address: event.address ?? '',
    lat: event.lat ?? 35.6892,
    lng: event.lng ?? 51.389,
    isFree: event.isFree,
    price: event.price,
    capacity: event.capacity,
    reservedCapacity: event.reservedCapacity ?? 0,
    genderRestriction: event.genderRestriction ?? 'open',
    ageRestriction: event.ageRestriction ?? 'open',
    cancellationFeePercent: event.cancellationFeePercent,
    isDiscoverable: event.settings.isDiscoverable,
    autoCreateGroup: event.settings.autoCreateGroup,
    addressVisibility: event.settings.addressVisibility,
    generalArea: event.settings.generalArea ?? '',
    waitlistAutoOffer: event.settings.waitlistAutoOffer,
    sendReviewRequestSms: event.settings.sendReviewRequestSms ?? true,
    faqs: mapFaqsToStaged(faqs),
  }
}

/**
 * Prefer a pending revision snapshot when hydrating the edit wizard.
 * Falls back to live media/FAQs when the revision omits them.
 */
export function mapRevisionPayloadToEditWizardData(
  event: CreatedEvent,
  payload: EventRevisionPayload,
  fallbackMedia: EventMedia[],
  fallbackFaqs: EventFaq[]
): EventWizardFormData {
  const base = mapEventToEditWizardData(event, fallbackMedia, fallbackFaqs)
  const startsAt = payload.startsAt ? String(payload.startsAt) : String(event.startsAt)
  const endsAt = payload.endsAt ? String(payload.endsAt) : String(event.endsAt)
  const start = splitIsoToDateAndMinutes(startsAt)
  const end = splitIsoToDateAndMinutes(endsAt)

  const mediaFromPayload = Array.isArray(payload.media)
    ? payload.media.map((item, index) => ({
        id: createClientId(),
        url: item.url,
        isPoster: Boolean(item.isPoster),
        isSquarePoster: Boolean(item.isSquarePoster),
        sortOrder: item.sortOrder ?? index,
      }))
    : base.media

  const faqsFromPayload = Array.isArray(payload.faqs)
    ? payload.faqs.map((faq) => ({
        id: createClientId(),
        question: faq.question,
        answer: faq.answer,
      }))
    : base.faqs

  const settings = payload.settings ?? {}

  return {
    ...base,
    title: payload.title ?? base.title,
    slug: payload.slug ?? base.slug,
    categoryId: payload.categoryId != null ? String(payload.categoryId) : base.categoryId,
    shortDescription: payload.shortDescription ?? base.shortDescription,
    description: payload.description ?? base.description,
    media: mediaFromPayload,
    startDate: start.date,
    startTime: start.minutes,
    endDate: end.date,
    endTime: end.minutes,
    provinceId: payload.provinceId != null ? String(payload.provinceId) : base.provinceId,
    cityId: payload.cityId != null ? String(payload.cityId) : base.cityId,
    address: payload.address ?? base.address,
    lat: payload.lat ?? base.lat,
    lng: payload.lng ?? base.lng,
    isFree: payload.isFree ?? base.isFree,
    price: payload.price ?? base.price,
    capacity: payload.capacity ?? base.capacity,
    genderRestriction: (payload.genderRestriction as EventGenderRestriction | undefined) ?? base.genderRestriction,
    ageRestriction: (payload.ageRestriction as EventAgeRestriction | undefined) ?? base.ageRestriction,
    cancellationFeePercent: payload.cancellationFeePercent ?? base.cancellationFeePercent,
    isDiscoverable: settings.isDiscoverable ?? base.isDiscoverable,
    autoCreateGroup: settings.autoCreateGroup ?? base.autoCreateGroup,
    addressVisibility: settings.addressVisibility ?? base.addressVisibility,
    generalArea: settings.generalArea ?? base.generalArea,
    waitlistAutoOffer: settings.waitlistAutoOffer ?? base.waitlistAutoOffer,
    sendReviewRequestSms: settings.sendReviewRequestSms ?? base.sendReviewRequestSms,
    faqs: faqsFromPayload,
  }
}