import type { MyEventsGuestItemDto, MyEventsHostItemDto, MyEventsListControllerList200, PaginationMetaDto } from '@/api/generated/models'
import { getMyEvents } from '@/api/generated/my-events/my-events'
import { unwrapApiPayload } from '@/helpers/listResponse'

export const MY_EVENTS_PAGE_SIZE = 20

export type MyEventsRole = 'guest' | 'host'
export type MyEventsGuestStatus = 'upcoming' | 'held' | 'cancelled'
export type MyEventsHostStatus = 'pending_review' | 'published' | 'rejected'
export type MyEventsStatus = MyEventsGuestStatus | MyEventsHostStatus
export type MyEventsGuestItem = MyEventsGuestItemDto
export type MyEventsHostItem = MyEventsHostItemDto

export interface MyEventsPage<TItem> {
  role: MyEventsRole
  status: MyEventsStatus
  canHost: boolean
  availableRoles: MyEventsRole[]
  items: TItem[]
  response: PaginationMetaDto
}

const myEventsApi = getMyEvents()

/** Fetches one server-filtered lifecycle page for the My Events screen. */
export const fetchMyEventsPage = async <TItem extends MyEventsGuestItem | MyEventsHostItem>({
  role,
  status,
  page,
  pageSize = MY_EVENTS_PAGE_SIZE,
  signal,
}: {
  role: MyEventsRole
  status: MyEventsStatus
  page: number
  pageSize?: number
  signal?: AbortSignal
}): Promise<MyEventsPage<TItem>> => {
  const response = await myEventsApi.myEventsListControllerList({ role, status, page, pageSize }, { signal })
  const payload = unwrapApiPayload<MyEventsListControllerList200>(response.data)

  return payload as MyEventsPage<TItem>
}