feat(ledger): Added ToPlutusData() function to gov proposal related types

ledger/common/gov.go

@@ -16,6 +16,8 @@ package common
 
 import (
 	"fmt"
+	"math/big"
+	"reflect"
 
 	"github.com/blinklabs-io/gouroboros/cbor"
 	"github.com/blinklabs-io/plutigo/pkg/data"
@@ -108,12 +110,26 @@ type GovAnchor struct {
 	DataHash [32]byte
 }
 
+func (a *GovAnchor) ToPlutusData() data.PlutusData {
+	return data.NewConstr(0,
+		data.NewByteString([]byte(a.Url)),
+		data.NewByteString(a.DataHash[:]),
+	)
+}
+
 type GovActionId struct {
 	cbor.StructAsArray
 	TransactionId [32]byte
 	GovActionIdx  uint32
 }
 
+func (id *GovActionId) ToPlutusData() data.PlutusData {
+	return data.NewConstr(0,
+		data.NewByteString(id.TransactionId[:]),
+		data.NewInteger(big.NewInt(int64(id.GovActionIdx))),
+	)
+}
+
 type ProposalProcedure struct {
 	cbor.StructAsArray
 	Deposit       uint64
@@ -122,6 +138,14 @@ type ProposalProcedure struct {
 	Anchor        GovAnchor
 }
 
+func (p *ProposalProcedure) ToPlutusData() data.PlutusData {
+	return data.NewConstr(0,
+		data.NewInteger(new(big.Int).SetUint64(p.Deposit)),
+		p.RewardAccount.ToPlutusData(),
+		p.GovAction.ToPlutusData(),
+	)
+}
+
 const (
 	GovActionTypeParameterChange    = 0
 	GovActionTypeHardForkInitiation = 1
@@ -137,6 +161,10 @@ type GovActionWrapper struct {
 	Action GovAction
 }
 
+func (g *GovActionWrapper) ToPlutusData() data.PlutusData {
+	return g.Action.ToPlutusData()
+}
+
 func (g *GovActionWrapper) UnmarshalCBOR(data []byte) error {
 	// Determine action type
 	actionType, err := cbor.DecodeIdFromList(data)
@@ -178,6 +206,7 @@ func (g *GovActionWrapper) MarshalCBOR() ([]byte, error) {
 
 type GovAction interface {
 	isGovAction()
+	ToPlutusData() data.PlutusData
 }
 
 type ParameterChangeGovAction struct {
@@ -188,6 +217,14 @@ type ParameterChangeGovAction struct {
 	PolicyHash  []byte
 }
 
+func (a *ParameterChangeGovAction) ToPlutusData() data.PlutusData {
+	return data.NewConstr(0,
+		a.ActionId.ToPlutusData(),
+		data.NewByteString(a.ParamUpdate),
+		data.NewByteString(a.PolicyHash),
+	)
+}
+
 func (a ParameterChangeGovAction) isGovAction() {}
 
 type HardForkInitiationGovAction struct {
@@ -201,6 +238,16 @@ type HardForkInitiationGovAction struct {
 	}
 }
 
+func (a *HardForkInitiationGovAction) ToPlutusData() data.PlutusData {
+	return data.NewConstr(1,
+		a.ActionId.ToPlutusData(),
+		data.NewConstr(0,
+			data.NewInteger(new(big.Int).SetUint64(uint64(a.ProtocolVersion.Major))),
+			data.NewInteger(new(big.Int).SetUint64(uint64(a.ProtocolVersion.Minor))),
+		),
+	)
+}
+
 func (a HardForkInitiationGovAction) isGovAction() {}
 
 type TreasuryWithdrawalGovAction struct {
@@ -210,6 +257,20 @@ type TreasuryWithdrawalGovAction struct {
 	PolicyHash  []byte
 }
 
+func (a *TreasuryWithdrawalGovAction) ToPlutusData() data.PlutusData {
+	pairs := make([][2]data.PlutusData, 0, len(a.Withdrawals))
+	for addr, amount := range a.Withdrawals {
+		pairs = append(pairs, [2]data.PlutusData{
+			data.NewConstr(0, addr.ToPlutusData()),
+			data.NewInteger(new(big.Int).SetUint64(amount)),
+		})
+	}
+	return data.NewConstr(2,
+		data.NewMap(pairs),
+		data.NewByteString(a.PolicyHash),
+	)
+}
+
 func (a TreasuryWithdrawalGovAction) isGovAction() {}
 
 type NoConfidenceGovAction struct {
@@ -218,6 +279,12 @@ type NoConfidenceGovAction struct {
 	ActionId *GovActionId
 }
 
+func (a *NoConfidenceGovAction) ToPlutusData() data.PlutusData {
+	return data.NewConstr(3,
+		a.ActionId.ToPlutusData(),
+	)
+}
+
 func (a NoConfidenceGovAction) isGovAction() {}
 
 type UpdateCommitteeGovAction struct {
@@ -229,6 +296,52 @@ type UpdateCommitteeGovAction struct {
 	Unknown     cbor.Rat
 }
 
+func (a *UpdateCommitteeGovAction) ToPlutusData() data.PlutusData {
+	removedItems := make([]data.PlutusData, 0, len(a.Credentials))
+	for _, cred := range a.Credentials {
+		removedItems = append(removedItems, cred.ToPlutusData())
+	}
+
+	addedPairs := make([][2]data.PlutusData, 0, len(a.CredEpochs))
+	for cred, epoch := range a.CredEpochs {
+		addedPairs = append(addedPairs, [2]data.PlutusData{
+			cred.ToPlutusData(),
+			data.NewInteger(new(big.Int).SetUint64(uint64(epoch))),
+		})
+	}
+
+	// Safe handling of Unknown Rat
+	var num, den *big.Int
+	if rat := a.Unknown; rat != (cbor.Rat{}) {
+		val := reflect.ValueOf(rat)
+		numField := val.FieldByName("num")
+		denField := val.FieldByName("den")
+
+		if numField.IsValid() && !numField.IsNil() {
+			num = numField.Interface().(*big.Int)
+		}
+		if denField.IsValid() && !denField.IsNil() {
+			den = denField.Interface().(*big.Int)
+		}
+	}
+
+	// Default values if still nil
+	if num == nil {
+		num = big.NewInt(0)
+	}
+	if den == nil {
+		den = big.NewInt(1)
+	}
+
+	return data.NewConstr(4,
+		a.ActionId.ToPlutusData(),
+		data.NewList(removedItems...),
+		data.NewMap(addedPairs),
+		data.NewInteger(num),
+		data.NewInteger(den),
+	)
+}
+
 func (a UpdateCommitteeGovAction) isGovAction() {}
 
 type NewConstitutionGovAction struct {
@@ -242,11 +355,25 @@ type NewConstitutionGovAction struct {
 	}
 }
 
+func (a *NewConstitutionGovAction) ToPlutusData() data.PlutusData {
+	return data.NewConstr(5,
+		a.ActionId.ToPlutusData(),
+		data.NewConstr(0,
+			a.Constitution.Anchor.ToPlutusData(),
+			data.NewByteString(a.Constitution.ScriptHash),
+		),
+	)
+}
+
 func (a NewConstitutionGovAction) isGovAction() {}
 
 type InfoGovAction struct {
 	cbor.StructAsArray
 	Type uint
 }
 
+func (a *InfoGovAction) ToPlutusData() data.PlutusData {
+	return data.NewConstr(6)
+}
+
 func (a InfoGovAction) isGovAction() {}

ledger/common/gov_test.go

@@ -18,7 +18,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/blinklabs-io/gouroboros/cbor"
 	"github.com/blinklabs-io/plutigo/pkg/data"
+	"github.com/stretchr/testify/assert"
 )
 
 // Ttests the ToPlutusData method for Voter types
@@ -177,3 +179,167 @@ func TestVotingProcedureToPlutusData(t *testing.T) {
 		})
 	}
 }
+
+func TestProposalProcedureToPlutusData(t *testing.T) {
+	addr := Address{}
+	action := &InfoGovAction{}
+
+	pp := &ProposalProcedure{
+		Deposit:       1000000,
+		RewardAccount: addr,
+		GovAction:     GovActionWrapper{Action: action},
+	}
+
+	pd := pp.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(0), constr.Tag)
+	assert.Len(t, constr.Fields, 3)
+}
+
+func TestGovActionIdToPlutusData(t *testing.T) {
+	txId := [32]byte{1, 2, 3, 4}
+	govActionId := &GovActionId{
+		TransactionId: txId,
+		GovActionIdx:  42,
+	}
+
+	pd := govActionId.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(0), constr.Tag)
+	assert.Len(t, constr.Fields, 2)
+}
+
+func TestParameterChangeGovActionToPlutusData(t *testing.T) {
+	action := &ParameterChangeGovAction{
+		ActionId:    &GovActionId{},
+		ParamUpdate: []byte{1, 2, 3},
+		PolicyHash:  []byte{4, 5, 6},
+	}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(0), constr.Tag)
+	assert.Len(t, constr.Fields, 3)
+}
+
+func TestHardForkInitiationGovActionToPlutusData(t *testing.T) {
+	action := &HardForkInitiationGovAction{
+		ActionId: &GovActionId{},
+		ProtocolVersion: struct {
+			cbor.StructAsArray
+			Major uint
+			Minor uint
+		}{
+			Major: 8,
+			Minor: 0,
+		},
+	}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(1), constr.Tag)
+	assert.Len(t, constr.Fields, 2)
+}
+
+func TestTreasuryWithdrawalGovActionToPlutusData(t *testing.T) {
+	addr := Address{}
+	withdrawals := map[*Address]uint64{
+		&addr: 5000000,
+	}
+
+	action := &TreasuryWithdrawalGovAction{
+		Withdrawals: withdrawals,
+		PolicyHash:  []byte{1, 2, 3},
+	}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(2), constr.Tag)
+	assert.Len(t, constr.Fields, 2)
+}
+
+func TestNoConfidenceGovActionToPlutusData(t *testing.T) {
+	action := &NoConfidenceGovAction{
+		ActionId: &GovActionId{},
+	}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(3), constr.Tag)
+	assert.Len(t, constr.Fields, 1)
+}
+
+func TestUpdateCommitteeGovActionToPlutusData(t *testing.T) {
+	cred := Credential{
+		CredType:   CredentialTypeAddrKeyHash,
+		Credential: NewBlake2b224([]byte("test")),
+	}
+	creds := []Credential{cred}
+	credEpochs := map[*Credential]uint{
+		&cred: 42,
+	}
+
+	// Test with zero value Rat
+	t.Run("ZeroValueRat", func(t *testing.T) {
+		action := &UpdateCommitteeGovAction{
+			ActionId:    &GovActionId{},
+			Credentials: creds,
+			CredEpochs:  credEpochs,
+			Unknown:     cbor.Rat{}, // Zero value
+		}
+
+		pd := action.ToPlutusData()
+		assert.NotNil(t, pd)
+
+		constr, ok := pd.(*data.Constr)
+		assert.True(t, ok)
+		assert.Equal(t, uint(4), constr.Tag)
+
+		// Verify default values were used
+		num, ok := constr.Fields[3].(*data.Integer)
+		assert.True(t, ok)
+		assert.Equal(t, int64(0), num.Inner.Int64())
+
+		den, ok := constr.Fields[4].(*data.Integer)
+		assert.True(t, ok)
+		assert.Equal(t, int64(1), den.Inner.Int64())
+	})
+
+	t.Run("NilCase", func(t *testing.T) {
+	})
+}
+
+func TestNewConstitutionGovActionToPlutusData(t *testing.T) {
+	action := &NewConstitutionGovAction{
+		ActionId: &GovActionId{},
+		Constitution: struct {
+			cbor.StructAsArray
+			Anchor     GovAnchor
+			ScriptHash []byte
+		}{
+			ScriptHash: []byte{1, 2, 3},
+		},
+	}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(5), constr.Tag)
+	assert.Len(t, constr.Fields, 2)
+}
+
+func TestInfoGovActionToPlutusData(t *testing.T) {
+	action := &InfoGovAction{}
+
+	pd := action.ToPlutusData()
+	constr, ok := pd.(*data.Constr)
+	assert.True(t, ok)
+	assert.Equal(t, uint(6), constr.Tag)
+	assert.Len(t, constr.Fields, 0)
+}