/**
 * 管理后台统一数据查询 - 与 IndexedDB 打通
 * 聚合多表订单、用户等供管理端使用
 */

import { db } from "./schema"

export type AdminOrderType = "product" | "service" | "recharge" | "hotel" | "cafe" | "course" | "pawn" | "pointCard"

export interface AdminOrder {
  id: number
  orderNo: string
  type: AdminOrderType
  itemName: string
  amount: number
  status: string
  userId?: number
  createdAt: string
  sourceTable: "productOrders" | "companionOrders" | "pointCardOrders" | "rechargeOrders" | "venueBookings" | "accountPawns"
}

/** 获取管理端统一订单列表（多表聚合） */
export async function getAllOrdersForAdmin(): Promise<AdminOrder[]> {
  const result: AdminOrder[] = []
  const now = new Date().toISOString()

  try {
    const [productOrders, companionOrders, pointCardOrders, rechargeOrders, venueBookings] = await Promise.all([
      db.productOrders.orderBy("createdAt").reverse().toArray(),
      db.companionOrders.orderBy("createdAt").reverse().toArray(),
      db.pointCardOrders.orderBy("createdAt").reverse().toArray(),
      db.rechargeOrders.orderBy("createdAt").reverse().toArray(),
      db.venueBookings.orderBy("createdAt").reverse().toArray(),
    ])

    productOrders.forEach((o) => {
      if (o.id == null) return
      const title = (o.items && o.items[0]?.productName) ? o.items[0].productName : "商品订单"
      result.push({
        id: o.id,
        orderNo: o.orderNo,
        type: "product",
        itemName: title,
        amount: o.finalAmount ?? o.totalAmount ?? 0,
        status: o.status,
        userId: o.userId,
        createdAt: o.createdAt ?? now,
        sourceTable: "productOrders",
      })
    })

    companionOrders.forEach((o) => {
      if (o.id == null) return
      result.push({
        id: o.id,
        orderNo: o.orderNo,
        type: "service",
        itemName: `${o.type === "cp" ? "CP" : "陪练"} - ${o.game} ${o.hours}小时`,
        amount: o.totalAmount ?? 0,
        status: o.status,
        userId: o.userId,
        createdAt: o.createdAt ?? now,
        sourceTable: "companionOrders",
      })
    })

    pointCardOrders.forEach((o) => {
      if (o.id == null) return
      result.push({
        id: o.id,
        orderNo: o.orderNo,
        type: "pointCard",
        itemName: `点卡 ${o.game} 面值${o.faceValue} x${o.quantity}`,
        amount: o.totalAmount ?? 0,
        status: o.status,
        userId: o.userId,
        createdAt: o.createdAt ?? now,
        sourceTable: "pointCardOrders",
      })
    })

    rechargeOrders.forEach((o) => {
      if (o.id == null) return
      result.push({
        id: o.id,
        orderNo: o.orderNo,
        type: "recharge",
        itemName: `充值 ¥${o.amount}`,
        amount: o.totalAmount ?? o.amount,
        status: o.status,
        userId: o.userId,
        createdAt: o.createdAt ?? now,
        sourceTable: "rechargeOrders",
      })
    })

    venueBookings.forEach((o) => {
      if (o.id == null) return
      result.push({
        id: o.id,
        orderNo: o.orderNo,
        type: o.type === "hotel" ? "hotel" : "cafe",
        itemName: `${o.type === "hotel" ? "酒店" : "网咖"}预订`,
        amount: o.totalAmount ?? 0,
        status: o.status,
        userId: o.userId,
        createdAt: o.createdAt ?? now,
        sourceTable: "venueBookings",
      })
    })

    result.sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime())
  } catch (e) {
    console.error("getAllOrdersForAdmin error:", e)
  }
  return result
}

/** 更新订单状态（根据来源表） */
export async function updateOrderStatusInSource(
  sourceTable: AdminOrder["sourceTable"],
  id: number,
  status: string
): Promise<void> {
  switch (sourceTable) {
    case "productOrders":
      await db.productOrders.update(id, { status: status as any, updatedAt: new Date().toISOString() })
      break
    case "companionOrders":
      await db.companionOrders.update(id, { status: status as any, updatedAt: new Date().toISOString() })
      break
    case "pointCardOrders":
      await db.pointCardOrders.update(id, { status: status as any })
      break
    case "rechargeOrders":
      await db.rechargeOrders.update(id, { status: status as any })
      break
    case "venueBookings":
      await db.venueBookings.update(id, { status: status as any })
      break
    default:
      throw new Error(`Unknown sourceTable: ${sourceTable}`)
  }
}