package errcode

// 错误码常量
const (
	OK = "0"

	// 参数错误
	ErrInvalidParam     = "10001"
	ErrMissingParam     = "10002"
	ErrInvalidPayMethod = "10003"
	ErrInvalidAmount    = "10004"

	// 鉴权错误
	ErrUnauthorized     = "20001"
	ErrAppNotFound      = "20002"
	ErrPermissionDenied = "20003"

	// 业务规则错误
	ErrOrderNotFound       = "30001"
	ErrOrderAlreadyPaid    = "30002"
	ErrOrderClosed         = "30003"
	ErrRefundAmountExceed  = "30004"
	ErrSharingAmountExceed = "30005"
	ErrSharingNotConfig    = "30006"
	ErrSharingFeeExceed    = "30007"
	ErrOrderIdempotent     = "30008"
	ErrOrderNotPaid        = "30009"
	ErrRefundNotFound      = "30010"

	// 渠道错误
	ErrChannelCreateFail = "40001"
	ErrChannelRefundFail = "40002"
	ErrChannelTimeout    = "40003"
	ErrChannelNotSupport = "40004"
	ErrChannelVerifyFail = "40005"

	// 系统错误
	ErrInternalDB     = "50001"
	ErrInternalRedis  = "50002"
	ErrInternalSystem = "50099"
)

// messages 错误码对应的默认消息
var messages = map[string]string{
	OK:                     "success",
	ErrInvalidParam:        "参数校验失败",
	ErrMissingParam:        "缺少必填参数",
	ErrInvalidPayMethod:    "不支持的支付方式",
	ErrInvalidAmount:       "金额非法",
	ErrUnauthorized:        "签名验证失败",
	ErrAppNotFound:         "应用不存在或已禁用",
	ErrPermissionDenied:    "无权操作该资源",
	ErrOrderNotFound:       "订单不存在",
	ErrOrderAlreadyPaid:    "订单已支付",
	ErrOrderClosed:         "订单已关闭",
	ErrRefundAmountExceed:  "退款金额超过可退金额",
	ErrSharingAmountExceed: "分润金额超过最大比例",
	ErrSharingNotConfig:    "未配置分润接收方",
	ErrSharingFeeExceed:    "分润与服务费之和超过订单金额",
	ErrOrderIdempotent:     "幂等请求，返回已有订单",
	ErrOrderNotPaid:        "订单未支付，无法退款",
	ErrRefundNotFound:      "退款单不存在",
	ErrChannelCreateFail:   "渠道下单失败",
	ErrChannelRefundFail:   "渠道退款失败",
	ErrChannelTimeout:      "渠道调用超时",
	ErrChannelNotSupport:   "渠道不支持该功能",
	ErrChannelVerifyFail:   "回调验签失败",
	ErrInternalDB:          "数据库错误",
	ErrInternalRedis:       "Redis 错误",
	ErrInternalSystem:      "系统内部错误",
}

// Message 返回错误码对应的消息
func Message(code string) string {
	if msg, ok := messages[code]; ok {
		return msg
	}
	return "未知错误"
}