From 9fb129a912dea5f3897f5b88b2a37468212d9a3a Mon Sep 17 00:00:00 2001
From: Aurora Gaffney <aurora@blinklabs.io>
Date: Thu, 16 May 2024 06:53:21 -0500
Subject: [PATCH] feat: TX validity interval start attribute (#633)

This adds a method for retrieving the validity interval start from a TX

Fixes #335
---
 ledger/allegra.go | 10 +++++++++-
 ledger/alonzo.go  |  4 ++++
 ledger/babbage.go |  4 ++++
 ledger/byron.go   |  5 +++++
 ledger/conway.go  |  4 ++++
 ledger/mary.go    |  4 ++++
 ledger/shelley.go |  9 +++++++++
 ledger/tx.go      |  1 +
 8 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/ledger/allegra.go b/ledger/allegra.go
index e566f166..1c6870d1 100644
--- a/ledger/allegra.go
+++ b/ledger/allegra.go
@@ -119,13 +119,17 @@ type AllegraTransactionBody struct {
 		ProtocolParamUpdates map[Blake2b224]AllegraProtocolParameterUpdate
 		Epoch                uint64
 	} `cbor:"6,keyasint,omitempty"`
-	ValidityIntervalStart uint64 `cbor:"8,keyasint,omitempty"`
+	TxValidityIntervalStart uint64 `cbor:"8,keyasint,omitempty"`
 }
 
 func (b *AllegraTransactionBody) UnmarshalCBOR(cborData []byte) error {
 	return b.UnmarshalCbor(cborData, b)
 }
 
+func (b *AllegraTransactionBody) ValidityIntervalStart() uint64 {
+	return b.TxValidityIntervalStart
+}
+
 type AllegraTransaction struct {
 	cbor.StructAsArray
 	cbor.DecodeStoreCbor
@@ -154,6 +158,10 @@ func (t AllegraTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t AllegraTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t AllegraTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/alonzo.go b/ledger/alonzo.go
index 62b8beaa..6c445f5c 100644
--- a/ledger/alonzo.go
+++ b/ledger/alonzo.go
@@ -272,6 +272,10 @@ func (t AlonzoTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t AlonzoTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t AlonzoTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/babbage.go b/ledger/babbage.go
index ed82a9de..889903ac 100644
--- a/ledger/babbage.go
+++ b/ledger/babbage.go
@@ -440,6 +440,10 @@ func (t BabbageTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t BabbageTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t BabbageTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/byron.go b/ledger/byron.go
index e3cc5100..62e0be22 100644
--- a/ledger/byron.go
+++ b/ledger/byron.go
@@ -170,6 +170,11 @@ func (t *ByronTransaction) TTL() uint64 {
 	return 0
 }
 
+func (t *ByronTransaction) ValidityIntervalStart() uint64 {
+	// No validity interval start in Byron
+	return 0
+}
+
 func (t *ByronTransaction) ReferenceInputs() []TransactionInput {
 	// No reference inputs in Byron
 	return nil
diff --git a/ledger/conway.go b/ledger/conway.go
index 3fefd4dd..ba43e275 100644
--- a/ledger/conway.go
+++ b/ledger/conway.go
@@ -345,6 +345,10 @@ func (t ConwayTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t ConwayTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t ConwayTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/mary.go b/ledger/mary.go
index c7ee4853..b8e800de 100644
--- a/ledger/mary.go
+++ b/ledger/mary.go
@@ -175,6 +175,10 @@ func (t MaryTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t MaryTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t MaryTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/shelley.go b/ledger/shelley.go
index 5a8feaee..46708354 100644
--- a/ledger/shelley.go
+++ b/ledger/shelley.go
@@ -213,6 +213,11 @@ func (b *ShelleyTransactionBody) TTL() uint64 {
 	return b.Ttl
 }
 
+func (b *ShelleyTransactionBody) ValidityIntervalStart() uint64 {
+	// No validity interval start in Shelley
+	return 0
+}
+
 func (b *ShelleyTransactionBody) ReferenceInputs() []TransactionInput {
 	return []TransactionInput{}
 }
@@ -403,6 +408,10 @@ func (t ShelleyTransaction) TTL() uint64 {
 	return t.Body.TTL()
 }
 
+func (t ShelleyTransaction) ValidityIntervalStart() uint64 {
+	return t.Body.ValidityIntervalStart()
+}
+
 func (t ShelleyTransaction) ReferenceInputs() []TransactionInput {
 	return t.Body.ReferenceInputs()
 }
diff --git a/ledger/tx.go b/ledger/tx.go
index cd9dfc40..af98ee6c 100644
--- a/ledger/tx.go
+++ b/ledger/tx.go
@@ -40,6 +40,7 @@ type TransactionBody interface {
 	Inputs() []TransactionInput
 	Outputs() []TransactionOutput
 	TTL() uint64
+	ValidityIntervalStart() uint64
 	ReferenceInputs() []TransactionInput
 	Collateral() []TransactionInput
 	CollateralReturn() TransactionOutput