multi: move FailureReason to payment package

channeldb/payments.go

@@ -8,63 +8,6 @@ import (
 	"github.com/lightningnetwork/lnd/lnwire"
 )
 
-// FailureReason encodes the reason a payment ultimately failed.
-type FailureReason byte
-
-const (
-	// FailureReasonTimeout indicates that the payment did timeout before a
-	// successful payment attempt was made.
-	FailureReasonTimeout FailureReason = 0
-
-	// FailureReasonNoRoute indicates no successful route to the
-	// destination was found during path finding.
-	FailureReasonNoRoute FailureReason = 1
-
-	// FailureReasonError indicates that an unexpected error happened during
-	// payment.
-	FailureReasonError FailureReason = 2
-
-	// FailureReasonPaymentDetails indicates that either the hash is unknown
-	// or the final cltv delta or amount is incorrect.
-	FailureReasonPaymentDetails FailureReason = 3
-
-	// FailureReasonInsufficientBalance indicates that we didn't have enough
-	// balance to complete the payment.
-	FailureReasonInsufficientBalance FailureReason = 4
-
-	// FailureReasonCanceled indicates that the payment was canceled by the
-	// user.
-	FailureReasonCanceled FailureReason = 5
-
-	// TODO(joostjager): Add failure reasons for:
-	// LocalLiquidityInsufficient, RemoteCapacityInsufficient.
-)
-
-// Error returns a human-readable error string for the FailureReason.
-func (r FailureReason) Error() string {
-	return r.String()
-}
-
-// String returns a human-readable FailureReason.
-func (r FailureReason) String() string {
-	switch r {
-	case FailureReasonTimeout:
-		return "timeout"
-	case FailureReasonNoRoute:
-		return "no_route"
-	case FailureReasonError:
-		return "error"
-	case FailureReasonPaymentDetails:
-		return "incorrect_payment_details"
-	case FailureReasonInsufficientBalance:
-		return "insufficient_balance"
-	case FailureReasonCanceled:
-		return "canceled"
-	}
-
-	return "unknown"
-}
-
 // PaymentCreationInfo is the information necessary to have ready when
 // initiating a payment, moving it into state InFlight.
 type PaymentCreationInfo struct {