import { apiClient } from '@/shared/api/client'
import type { ApiResponse } from '@/shared/types/types'
import type { DisputeStatus, OrderStatus } from '@/shared/types/status'

export interface DashboardMetrics {
  total_users: number
  verified_users: number
  total_listings: number
  published_listings: number
  total_orders: number
  renting_orders: number
  today_orders: number
  today_ledger_amount_cent: number
}

export interface DashboardPending {
  listing_reviews: number
  disputes: number
  pending_handoffs: number
  pending_return_confirms: number
}

export interface ListingDayStats {
  date: string
  published_count: number
  active_offline_count: number
  trade_leave_count: number
}

export interface ListingChannelDayStats extends ListingDayStats {
  source_channel: string
}

export interface ListingDailyOverview {
  today: ListingDayStats
  trend: ListingDayStats[]
  today_channels: ListingChannelDayStats[]
  channel_trend: ListingChannelDayStats[]
  today_uploaders: ListingUploaderDayStats[]
  uploader_trend: ListingUploaderDayStats[]
  days: number
  timezone: string
}

export interface ListingUploaderDayStats {
  date: string
  uploader_id: number
  uploader_name: string
  upload_count: number
}

export interface DashboardRecentOrder {
  id: number
  order_no: string
  title: string
  renter_id: number
  owner_id: number
  status: OrderStatus
  rent_amount_cent: number
  deposit_amount_cent: number
  created_at: string
}

export interface DashboardRecentDispute {
  id: number
  order_id: number
  order_no: string
  title: string
  type: string
  status: DisputeStatus
  initiator_id: number
  created_at: string
}

export interface ManualEntryTodayStats {
  admin_id: number
  admin_name: string
  count: number
}

export interface AdminDashboard {
  metrics: DashboardMetrics
  pending: DashboardPending
  listing_daily: ListingDailyOverview
  manual_entry_today: ManualEntryTodayStats[]
  recent_orders: DashboardRecentOrder[]
  recent_disputes: DashboardRecentDispute[]
  generated_at: string
}

const emptyDayStats = (): ListingDayStats => ({
  date: '',
  published_count: 0,
  active_offline_count: 0,
  trade_leave_count: 0,
})

export async function fetchAdminDashboard() {
  const { data } = await apiClient.get<ApiResponse<AdminDashboard>>('/admin/dashboard')
  const payload = data.data
  const listingDaily = payload.listing_daily
  return {
    ...payload,
    listing_daily: {
      today: listingDaily?.today ?? emptyDayStats(),
      trend: listingDaily?.trend ?? [],
      today_channels: listingDaily?.today_channels ?? [],
      channel_trend: listingDaily?.channel_trend ?? [],
      today_uploaders: listingDaily?.today_uploaders ?? [],
      uploader_trend: listingDaily?.uploader_trend ?? [],
      days: listingDaily?.days ?? 7,
      timezone: listingDaily?.timezone ?? 'Asia/Shanghai',
    },
    manual_entry_today: payload.manual_entry_today ?? [],
    recent_orders: payload.recent_orders ?? [],
    recent_disputes: payload.recent_disputes ?? [],
  }
}