Add support for deriving user banks, fix default reward_manager program ID

Author: rickyrombo

api/spl/programs/claimable_tokens/accounts.go

@@ -0,0 +1,33 @@
+package claimable_tokens
+
+import (
+	"encoding/hex"
+	"strings"
+
+	"github.com/gagliardetto/solana-go"
+	"github.com/mr-tron/base58"
+)
+
+func deriveAuthority(mint solana.PublicKey) (solana.PublicKey, uint8, error) {
+	return solana.FindProgramAddress([][]byte{mint.Bytes()[:32]}, ProgramID)
+}
+
+func DeriveUserBankAccount(mint solana.PublicKey, ethAddress string) (solana.PublicKey, error) {
+	ethAddressBytes, err := hex.DecodeString(strings.TrimPrefix(ethAddress, "0x"))
+	if err != nil {
+		return solana.PublicKey{}, err
+	}
+
+	seed := base58.Encode(ethAddressBytes)
+	authority, _, err := deriveAuthority(mint)
+	if err != nil {
+		return solana.PublicKey{}, err
+	}
+
+	pubkey, err := solana.CreateWithSeed(authority, seed, solana.TokenProgramID)
+	if err != nil {
+		return solana.PublicKey{}, err
+	}
+
+	return pubkey, nil
+}

api/spl/programs/claimable_tokens/accounts_test.go

@@ -0,0 +1,19 @@
+package claimable_tokens_test
+
+import (
+	"testing"
+
+	"bridgerton.audius.co/api/spl/programs/claimable_tokens"
+	"github.com/gagliardetto/solana-go"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDeriveUserBankAccount(t *testing.T) {
+	mint := solana.MustPublicKeyFromBase58("9LzCMqDgTKYz9Drzqnpgee3SGa89up3a247ypMj2xrqM")
+	ethAddress := "0xa507da823bf0c5dc44a759d0d398b7f52097da19"
+	expectedUserBankAccount := solana.MustPublicKeyFromBase58("9oJLynXRLkWZkTXXExPXVbza5n8CzTZLvtJ1Y3pEJ2Pk")
+
+	userBankAccount, err := claimable_tokens.DeriveUserBankAccount(mint, ethAddress)
+	require.NoError(t, err)
+	require.Equal(t, expectedUserBankAccount.String(), userBankAccount.String())
+}

api/spl/programs/claimable_tokens/instruction.go

@@ -0,0 +1,9 @@
+package claimable_tokens
+
+import "github.com/gagliardetto/solana-go"
+
+var ProgramID = solana.MustPublicKeyFromBase58("Ewkv3JahEFRKkcJmpoKB7pXbnUHwjAyXiwEo4ZY2rezQ")
+
+func SetProgramID(pubkey solana.PublicKey) {
+	ProgramID = pubkey
+}

api/spl/programs/reward_manager/instruction.go

@@ -16,7 +16,7 @@ const (
 	DisbursementSeedPrefix = "T_"
 )
 
-var ProgramID = solana.MustPublicKeyFromBase58("CDpzvz7DfgbF95jSSCHLX3ERkugyfgn9Fw8ypNZ1hfXp")
+var ProgramID = solana.MustPublicKeyFromBase58("DDZDcYdQFEMwcu2Mwo75yGFjJ1mUQyyXLWzhZLEVFcei")
 
 func SetProgramID(pubkey solana.PublicKey) {
 	ProgramID = pubkey