feat: support metaplex tokenmeta decode

Author: yihau

common/program_id.go

@@ -10,4 +10,5 @@ var (
 	TokenProgramID                     = PublicKeyFromString("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA")
 	SPLAssociatedTokenAccountProgramID = PublicKeyFromString("ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL")
 	SPLNameServiceProgramID            = PublicKeyFromString("namesLPneVptA9Z5rqUDD9tMTWEJwofgaYwp8cawRkX")
+	MetaplexTokenMetaProgramID         = PublicKeyFromString("metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s")
 )

go.mod

@@ -5,5 +5,6 @@ go 1.16
 require (
 	filippo.io/edwards25519 v1.0.0-rc.1
 	github.com/mr-tron/base58 v1.2.0
+	github.com/near/borsh-go v0.3.1-0.20210831082424-4377deff6791
 	github.com/stretchr/testify v1.7.0
 )

go.sum

@@ -4,6 +4,8 @@ github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
 github.com/mr-tron/base58 v1.2.0/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
+github.com/near/borsh-go v0.3.1-0.20210831082424-4377deff6791 h1:8uy2DX0wCU3Ac8bHWq2Z11zquQ+iKX9Yk3JAmVdHkWk=
+github.com/near/borsh-go v0.3.1-0.20210831082424-4377deff6791/go.mod h1:NeMochZp7jN/pYFuxLkrZtmLqbADmnp/y1+/dL+AsyQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=

program/metaplex/tokenmeta/state.go

@@ -0,0 +1,54 @@
+package tokenmeta
+
+import (
+	"fmt"
+
+	"github.com/near/borsh-go"
+	"github.com/portto/solana-go-sdk/common"
+)
+
+type Key borsh.Enum
+
+const (
+	KeyUninitialized Key = iota
+	KeyEditionV1
+	KeyMasterEditionV1
+	KeyReservationListV1
+	KeyMetadataV1
+	KeyReservationListV2
+	KeyMasterEditionV2
+	KeyEditionMarker
+)
+
+type Creator struct {
+	Address  common.PublicKey
+	Verified bool
+	Share    uint8
+}
+
+type Data struct {
+	Name                 string
+	Symbol               string
+	Uri                  string
+	SellerFeeBasisPoints uint16
+	Creators             *[]Creator
+}
+
+type Metadata struct {
+	Key                 Key
+	UpdateAuthority     common.PublicKey
+	Mint                common.PublicKey
+	Data                Data
+	PrimarySaleHappened bool
+	IsMutable           bool
+	EditionNonce        *uint8
+}
+
+func MetadataDeserialize(data []byte) (Metadata, error) {
+	var metadata Metadata
+	err := borsh.Deserialize(&metadata, data)
+	if err != nil {
+		return Metadata{}, fmt.Errorf("failed to deserialize data, err: %v", err)
+	}
+	return metadata, nil
+}

program/metaplex/tokenmeta/utils.go

@@ -0,0 +1,20 @@
+package tokenmeta
+
+import (
+	"github.com/portto/solana-go-sdk/common"
+)
+
+func GetTokenMetaPubkey(mint common.PublicKey) (common.PublicKey, error) {
+	metadataAccount, _, err := common.FindProgramAddress(
+		[][]byte{
+			[]byte("metadata"),
+			common.MetaplexTokenMetaProgramID.Bytes(),
+			mint.Bytes(),
+		},
+		common.MetaplexTokenMetaProgramID,
+	)
+	if err != nil {
+		return common.PublicKey{}, err
+	}
+	return metadataAccount, nil
+}