feat: Add command bech32-convert (#1845)

* add bech32-convert command to gaiad

* add changelog notice

* add review fixes

* add tests for ConvertBech32Prefix

Co-authored-by: Petr Ivanov <[email protected]>
Co-authored-by: Danilo Pantani <[email protected]>
Co-authored-by: billy rennekamp <[email protected]>

CHANGELOG.md

@@ -49,6 +49,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
   Distribution, Encode, Evidence, FeeGrant Global Fee, Legacy Gov, New Gov, Groups,
   IBC, ICA, packet forwarding middleware, Slashing, Staking, and Vesting module.
 * (tests) use gaiad to swap out [Ignite](https://github.com/ignite/cli) in [liveness tests](https://github.com/cosmos/gaia/blob/main/.github/workflows/test.yml).
+* (gaia) [#1845](https://github.com/cosmos/gaia/pull/1447) Add bech32-convert command to gaiad 
+
 
 ## [v7.0.2] -2022-05-09
 

cmd/gaiad/cmd/bech32_convert.go

@@ -0,0 +1,53 @@
+package cmd
+
+import (
+	"fmt"
+
+	addressutil "github.com/cosmos/gaia/v8/pkg/address"
+
+	"github.com/spf13/cobra"
+)
+
+var flagBech32Prefix = "prefix"
+
+// AddBech32ConvertCommand returns bech32-convert cobra Command.
+func AddBech32ConvertCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "bech32-convert [address]",
+		Short: "Convert any bech32 string to the cosmos prefix",
+		Long: `Convert any bech32 string to the cosmos prefix
+
+Example:
+	gaiad debug bech32-convert akash1a6zlyvpnksx8wr6wz8wemur2xe8zyh0ytz6d88
+
+	gaiad debug bech32-convert stride1673f0t8p893rqyqe420mgwwz92ac4qv6synvx2 --prefix osmo
+	`,
+		Args: cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			bech32prefix, err := cmd.Flags().GetString(flagBech32Prefix)
+			if err != nil {
+				return err
+			}
+
+			address := args[0]
+			convertedAddress, err := addressutil.ConvertBech32Prefix(address, bech32prefix)
+			if err != nil {
+				return fmt.Errorf("convertation failed: %s", err)
+			}
+
+			cmd.Println(convertedAddress)
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringP(flagBech32Prefix, "p", "cosmos", "Bech32 Prefix to encode to")
+
+	return cmd
+}
+
+// addDebugCommands injects custom debug commands into another command as children.
+func addDebugCommands(cmd *cobra.Command) *cobra.Command {
+	cmd.AddCommand(AddBech32ConvertCommand())
+	return cmd
+}

cmd/gaiad/cmd/root.go

@@ -115,7 +115,7 @@ func initRootCmd(rootCmd *cobra.Command, encodingConfig params.EncodingConfig) {
 		AddGenesisAccountCmd(gaia.DefaultNodeHome),
 		tmcli.NewCompletionCmd(rootCmd, true),
 		testnetCmd(gaia.ModuleBasics, banktypes.GenesisBalancesIterator{}),
-		debug.Cmd(),
+		addDebugCommands(debug.Cmd()),
 		config.Cmd(),
 	)
 

pkg/address/address.go

@@ -0,0 +1,22 @@
+package address
+
+import (
+	"fmt"
+
+	"github.com/cosmos/cosmos-sdk/types/bech32"
+)
+
+// ConvertBech32Prefix convert bech32 address to specified prefix.
+func ConvertBech32Prefix(address, prefix string) (string, error) {
+	_, bz, err := bech32.DecodeAndConvert(address)
+	if err != nil {
+		return "", fmt.Errorf("cannot decode %s address: %s", address, err)
+	}
+
+	convertedAddress, err := bech32.ConvertAndEncode(prefix, bz)
+	if err != nil {
+		return "", fmt.Errorf("cannot convert %s address: %s", address, err)
+	}
+
+	return convertedAddress, nil
+}

pkg/address/address_test.go

@@ -0,0 +1,43 @@
+package address
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestConvertBech32Prefix(t *testing.T) {
+	cases := []struct {
+		name      string
+		address   string
+		prefix    string
+		converted string
+		err       error
+	}{
+		{
+			name:      "Convert valid bech 32 address",
+			address:   "akash1a6zlyvpnksx8wr6wz8wemur2xe8zyh0ytz6d88",
+			converted: "cosmos1a6zlyvpnksx8wr6wz8wemur2xe8zyh0yxeh27a",
+			prefix:    "cosmos",
+		},
+		{
+			name:    "Convert invalid address",
+			address: "invalidaddress",
+			prefix:  "cosmos",
+			err:     errors.New("cannot decode invalidaddress address: decoding bech32 failed: invalid separator index -1"),
+		},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			convertedAddress, err := ConvertBech32Prefix(tt.address, tt.prefix)
+			if tt.err != nil {
+				require.ErrorContains(t, err, tt.err.Error())
+			} else {
+				require.NoError(t, err)
+			}
+			require.Equal(t, tt.converted, convertedAddress)
+		})
+	}
+}