tx_did.go

package cli

import (
	"crypto/ed25519"
	"encoding/base64"

	"github.com/cheqd/cheqd-node/x/cheqd/types"
	"github.com/cosmos/cosmos-sdk/client"
	"github.com/cosmos/cosmos-sdk/client/flags"
	"github.com/cosmos/cosmos-sdk/client/tx"
	"github.com/spf13/cobra"
)

const FlagVerKey = "ver-key"

func CmdCreateDid() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "create-did [payload-json] [verification-method-id]",
		Short: "Creates a new DID.",
		Long: "Creates a new DID. [payload-json] is JSON encoded MsgCreateDidPayload. " +
			"Key to sign the identity message (verKey) will be taken either from " + FlagVerKey + " flag or interactively." +
			"[verification-method-id] is the DID fragment that points to the verKey.",
		Args: cobra.ExactArgs(2),
		RunE: func(cmd *cobra.Command, args []string) error {
			payloadJson := args[0]
			verificationMethodId := args[1]

			clientCtx, err := client.GetClientTxContext(cmd)
			if err != nil {
				return err
			}

			// Unmarshal payload
			var payload types.MsgCreateDidPayload
			err = clientCtx.Codec.UnmarshalJSON([]byte(payloadJson), &payload)
			if err != nil {
				return err
			}

			// Get verKey
			verKeyPriv, err := getVerKey(cmd, clientCtx)
			if err != nil {
				return err
			}

			// Build identity message
			signBytes := payload.GetSignBytes()
			signatureBytes := ed25519.Sign(verKeyPriv, signBytes)

			signInfo := types.SignInfo{
				VerificationMethodId: verificationMethodId,
				Signature:            base64.StdEncoding.EncodeToString(signatureBytes),
			}

			msg := types.MsgCreateDid{
				Payload:    &payload,
				Signatures: []*types.SignInfo{&signInfo},
			}

			//Set fee-payer if not set
			err = setFeePayerFromSigner(&clientCtx)
			if err != nil {
				return err
			}

			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), &msg)
		},
	}

	flags.AddTxFlagsToCmd(cmd)
	cmd.Flags().String(FlagVerKey, "", "Base64 encoded ed25519 private key to sign identity message with. "+
		"Use for testing purposes only because the key will be stored in shell history. Prefer interactive mode.")

	return cmd
}

func CmdUpdateDid() *cobra.Command {
	cmd := &cobra.Command{
		Use:   "update-did [payload-json] [verification-method-id]",
		Short: "Update a DID.",
		Long: "Update a DID. [payload-json] is JSON encoded MsgUpdateDidPayload. " +
			"Key to sign the identity message (verKey) will be taken either from " + FlagVerKey + " flag or interactively." +
			"[verification-method-id] is the DID fragment that points to the verKey.",
		Args: cobra.ExactArgs(2),
		RunE: func(cmd *cobra.Command, args []string) error {
			payloadJson := args[0]
			verificationMethodId := args[1]

			clientCtx, err := client.GetClientTxContext(cmd)
			if err != nil {
				return err
			}

			// Unmarshal payload
			var payload types.MsgUpdateDidPayload
			err = clientCtx.Codec.UnmarshalJSON([]byte(payloadJson), &payload)
			if err != nil {
				return err
			}

			// Get verKey
			verKeyPriv, err := getVerKey(cmd, clientCtx)
			if err != nil {
				return err
			}

			// Build identity message
			signBytes := payload.GetSignBytes()
			signatureBytes := ed25519.Sign(verKeyPriv, signBytes)

			signInfo := types.SignInfo{
				VerificationMethodId: verificationMethodId,
				Signature:            base64.StdEncoding.EncodeToString(signatureBytes),
			}

			msg := types.MsgUpdateDid{
				Payload:    &payload,
				Signatures: []*types.SignInfo{&signInfo},
			}

			//Set fee-payer if not set
			err = setFeePayerFromSigner(&clientCtx)
			if err != nil {
				return err
			}

			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), &msg)
		},
	}

	flags.AddTxFlagsToCmd(cmd)
	cmd.Flags().String(FlagVerKey, "", "Base64 encoded ed25519 private key to sign identity message with. "+
		"Use for testing purposes only because the key will be stored in shell history. Prefer interactive mode.")

	return cmd
}