admin/src/models/coupon.ts

import type { User } from "./user"

export type Coupon = {
  id: number
  name: string
  user_id: number
  code: string
  remark: string
  amount: number
  min_amount: number
  count: number
  status: number
  expire_type: number
  created_at: Date
  updated_at: Date
  expire_at: Date
  expire_in: number
  coupon: useCoupon
  user: User
}
type useCoupon = {
  id: number
  name: string
  expire_type: number
  status: number
  created_at: Date
}

// 优惠券使用状态
export const couponUseStatusMap = {
  0: { text: "未使用", color: "text-green-600" },
  1: { text: "已使用", color: "text-blue-600" },
  2: { text: "已禁用", color: "text-green-600" },
} as const

// 优惠券状态
export const couponStatusMap = {
  0: { text: "禁用", color: "text-yellow-600" },
  1: { text: "正常", color: "text-green-600" },
} as const

// 优惠券过期类型
export const expireTypeMap = {
  0: "不过期",
  1: "固定日期",
  2: "相对日期",
} as const

// 优惠券状态 & 使用状态
export const getStatus = (status: number, type: "coupon" | "use") => {
  if (type === "coupon") {
    return (
      couponStatusMap[status as keyof typeof couponStatusMap] || {
        text: "",
        color: "text-gray-400",
      }
    )
  }
  return (
    couponUseStatusMap[status as keyof typeof couponUseStatusMap] || {
      text: "",
      color: "text-gray-400",
    }
  )
}

export const getDaysToExpire = (expireAt: Date | string): number => {
  if (!expireAt) return 0

  const targetDate = new Date(expireAt)
  const now = new Date()

  const targetDay = new Date(
    targetDate.getFullYear(),
    targetDate.getMonth(),
    targetDate.getDate(),
  )
  const today = new Date(now.getFullYear(), now.getMonth(), now.getDate())

  const diffTime = targetDay.getTime() - today.getTime()
  const diffDays = Math.ceil(diffTime / (1000 * 60 * 60 * 24))

  return diffDays
}

// 过期类型
export const getExpireType = (expireType: number): string => {
  return expireTypeMap[expireType as keyof typeof expireTypeMap] || ""
}

// 获取过期类型显示（带天数）
export const getExpireTypeText = (
  expireType: number,
  expireAt: Date,
): string => {
  const typeText = getExpireType(expireType)
  console.log(typeText, "typeText")

  if (expireType === 0) return typeText

  const days = getDaysToExpire(expireAt)
  console.log(days, "days")

  if (days === 0) {
    return `${typeText}`
  } else if (days > 0) {
    return `${typeText}（${days}天后）`
  } else {
    return `${typeText}（已过期${Math.abs(days)}天）`
  }
}