import axiosInstance from '@/config/axios'
import { parseRemittanceList, unwrapApiPayload } from '@/helpers/listResponse'
import { API_ROUTES } from '@/services/config'

export interface AdminChatUser {
  userId: string
  mobile: string
  firstName: string | null
  lastName: string | null
  avatarUrl: string | null
  gender: 'male' | 'female' | 'other' | null
  status: string
  joinedAt: string
}

export interface AdminConversation {
  id: string
  type: 'direct' | 'event_group'
  eventId: string | null
  eventTitle: string | null
  participantPreview: AdminChatUser[]
  memberCount: number
  preview: string | null
  closesAt: string | null
  lastMessageAt: string | null
  createdAt: string
}

export interface AdminChatMessage {
  id: string
  conversationId: string
  senderId: string
  senderMobile?: string | null
  senderFirstName: string | null
  senderLastName: string | null
  senderAvatarUrl: string | null
  senderGender: 'male' | 'female' | 'other' | null
  body: string | null
  imageUrl: string | null
  replyTo?: {
    id: string
    senderId: string
    senderDisplayName: string
    bodyPreview?: string | null
    hasImage: boolean
    isUnavailable: boolean
  } | null
  createdAt: string
}

export interface AdminMessagesPage {
  items: AdminChatMessage[]
  olderCursor: string | null
  newerCursor: string | null
  hasMoreBefore: boolean
  hasMoreAfter: boolean
  aroundMessageId: string | null
}

export const GET_ADMIN_CONVERSATION = async (conversationId: string): Promise<AdminConversation> => {
  const response = await axiosInstance.get(API_ROUTES.CHAT_OVERSIGHT.ADMIN_DETAIL(conversationId))

  return unwrapApiPayload(response.data)
}

export const GET_ADMIN_CONVERSATION_PARTICIPANTS = async (conversationId: string): Promise<AdminChatUser[]> => {
  const response = await axiosInstance.get(API_ROUTES.CHAT_OVERSIGHT.ADMIN_PARTICIPANTS(conversationId), {
    params: { page: 1, pageSize: 100, sort: 'joinedAt' },
  })

  return parseRemittanceList<AdminChatUser>(response.data).items
}

export const GET_ADMIN_CONVERSATION_MESSAGES = async (
  conversationId: string,
  params?: { before?: string; after?: string; around?: string; pageSize?: number }
): Promise<AdminMessagesPage> => {
  const response = await axiosInstance.get(API_ROUTES.CHAT_OVERSIGHT.ADMIN_MESSAGES(conversationId), {
    params: {
      pageSize: params?.pageSize ?? 50,
      ...(params?.before ? { before: params.before } : {}),
      ...(params?.after ? { after: params.after } : {}),
      ...(params?.around ? { around: params.around } : {}),
    },
  })
  const payload = unwrapApiPayload(response.data)
  const itemsRaw = payload.items
  const responseRaw = payload.response
  const responseMeta =
    typeof responseRaw === 'object' && responseRaw !== null && !Array.isArray(responseRaw)
      ? (responseRaw as {
          olderCursor?: string | null
          newerCursor?: string | null
          hasMoreBefore?: boolean
          hasMoreAfter?: boolean
          aroundMessageId?: string
        })
      : null

  return {
    items: Array.isArray(itemsRaw) ? (itemsRaw as AdminChatMessage[]) : [],
    olderCursor: responseMeta?.olderCursor ?? null,
    newerCursor: responseMeta?.newerCursor ?? null,
    hasMoreBefore: responseMeta?.hasMoreBefore ?? false,
    hasMoreAfter: responseMeta?.hasMoreAfter ?? false,
    aroundMessageId: responseMeta?.aroundMessageId ?? null,
  }
}