'use client'

import { useInfiniteQuery, useQuery } from '@tanstack/react-query'

import { eventPublicDetailStaleTime } from '@/queries/consumer/eventDetailCache'
import { consumerKeys } from '@/queries/consumerKeys'
import { unwrapService } from '@/queries/unwrapService'
import { fetchConsumerEventDetail, fetchEventOwnerInsights, type ConsumerEventDetailData } from '@/services/consumerEventDetail'
import { fetchEventFaqs, fetchEventMedia, type EventFaq, type EventMedia } from '@/services/eventDetail'
import { fetchPublicOrganizer, type PublicOrganizerSummary } from '@/services/publicOrganizer'
import { EVENT_REVIEWS_PAGE_SIZE, LIST_EVENT_REVIEWS_PAGE, type EventReview } from '@/services/reviews'

interface InitialDataOptions<T> {
  initialData?: T
  /** When false, the query stays idle (e.g. owner-insights for non-hosts). Default true. */
  enabled?: boolean
}

export const useConsumerEventDetailQuery = (eventId: string, viewerId: string, options?: InitialDataOptions<ConsumerEventDetailData>) => {
  const hasSeed = options?.initialData !== undefined

  return useQuery({
    queryKey: consumerKeys.eventDetail(eventId, viewerId),
    queryFn: () => fetchConsumerEventDetail(eventId),
    enabled: Boolean(eventId) && (options?.enabled ?? true),
    staleTime: eventPublicDetailStaleTime,
    ...(hasSeed ? { initialData: options?.initialData } : {}),
  })
}

export const useEventMediaQuery = (eventId: string, options?: InitialDataOptions<EventMedia[]>) => {
  const hasSeed = options?.initialData !== undefined

  return useQuery({
    queryKey: consumerKeys.eventMedia(eventId),
    queryFn: () => fetchEventMedia(eventId),
    enabled: Boolean(eventId) && (options?.enabled ?? true),
    staleTime: eventPublicDetailStaleTime,
    ...(hasSeed ? { initialData: options?.initialData } : {}),
  })
}

export const useEventFaqsQuery = (eventId: string, options?: InitialDataOptions<EventFaq[]>) => {
  const hasSeed = options?.initialData !== undefined

  return useQuery({
    queryKey: consumerKeys.eventFaqs(eventId),
    queryFn: () => fetchEventFaqs(eventId),
    enabled: Boolean(eventId) && (options?.enabled ?? true),
    staleTime: eventPublicDetailStaleTime,
    ...(hasSeed ? { initialData: options?.initialData } : {}),
  })
}

export const usePublicOrganizerQuery = (organizerId: string, options?: InitialDataOptions<PublicOrganizerSummary>) => {
  const hasSeed = options?.initialData !== undefined

  return useQuery({
    queryKey: consumerKeys.publicOrganizer(organizerId),
    queryFn: () => fetchPublicOrganizer(organizerId),
    enabled: Boolean(organizerId) && (options?.enabled ?? true),
    staleTime: eventPublicDetailStaleTime,
    ...(hasSeed ? { initialData: options?.initialData } : {}),
  })
}

export const useEventOwnerInsightsQuery = (eventId: string, enabled: boolean) =>
  useQuery({
    queryKey: consumerKeys.eventOwnerInsights(eventId),
    queryFn: () => fetchEventOwnerInsights(eventId),
    enabled: Boolean(eventId) && enabled,
    staleTime: eventPublicDetailStaleTime,
  })

export interface EventReviewsPageSeed {
  items: EventReview[]
  totalItemsCount: number
}

/**
 * Infinite reviews list for the consumer event detail section.
 * SSR/bootstrap can seed page 1 so hydration does not refetch while fresh.
 */
export const useEventReviewsInfiniteQuery = (eventId: string, seed?: EventReviewsPageSeed) => {
  const hasSeed = seed !== undefined

  return useInfiniteQuery({
    queryKey: consumerKeys.eventReviews(eventId),
    queryFn: async ({ pageParam }) =>
      unwrapService(await LIST_EVENT_REVIEWS_PAGE(eventId, pageParam, EVENT_REVIEWS_PAGE_SIZE, { errorMode: 'parent' })),
    initialPageParam: 1,
    getNextPageParam: (lastPage) => (lastPage.page < lastPage.totalPages ? lastPage.page + 1 : undefined),
    enabled: Boolean(eventId),
    staleTime: eventPublicDetailStaleTime,
    ...(hasSeed && seed
      ? {
          initialData: {
            pages: [
              {
                items: seed.items,
                page: 1,
                totalItemsCount: seed.totalItemsCount,
                totalPages: Math.max(1, Math.ceil(seed.totalItemsCount / EVENT_REVIEWS_PAGE_SIZE) || 1),
              },
            ],
            pageParams: [1],
          },
        }
      : {}),
  })
}