implement sub command to generate a MsgWirePayForMessage from the cli

x/lazyledgerapp/client/cli/payformessage.go

@@ -0,0 +1,81 @@
+package cli
+
+import (
+	"encoding/hex"
+	"errors"
+
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/client/tx"
+	"github.com/lazyledger/lazyledger-app/x/lazyledgerapp/types"
+	"github.com/spf13/cobra"
+)
+
+// CmdCreatePayForMessage returns a cobra command that uses the key ring backend
+// and locally running node to create and broadcast a new WirePayForMessage
+// transaction.
+func CmdCreatePayForMessage() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "payForMessage [hexNamespace] [hexMessage]",
+		Short: "Creates a new WirePayForMessage",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx, err := client.GetClientTxContext(cmd)
+			if err != nil {
+				return err
+			}
+
+			// get the account name
+			accName := clientCtx.GetFromName()
+			if accName == "" {
+				return errors.New("no account name provided, please use the --from flag")
+			}
+
+			// get info on the key
+			keyInfo, err := clientCtx.Keyring.Key(accName)
+			if err != nil {
+				return err
+			}
+
+			// decode the namespace
+			namespace, err := hex.DecodeString(args[0])
+			if err != nil {
+				return err
+			}
+
+			// decode the message
+			message, err := hex.DecodeString(args[1])
+			if err != nil {
+				return err
+			}
+
+			// create the PayForMessage
+			pfmMsg, err := types.NewMsgWirePayForMessage(
+				namespace,
+				message,
+				keyInfo.GetPubKey().Bytes(),
+				&types.TransactionFee{}, // transaction fee is not yet used
+				types.SquareSize,
+			)
+			if err != nil {
+				return err
+			}
+
+			// sign the PayForMessage's ShareCommitments
+			err = pfmMsg.SignShareCommitments(accName, clientCtx.Keyring)
+			if err != nil {
+				return err
+			}
+
+			// run message checks
+			if err = pfmMsg.ValidateBasic(); err != nil {
+				return err
+			}
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), pfmMsg)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+
+	return cmd
+}

x/lazyledgerapp/client/cli/tx.go

@@ -20,7 +20,7 @@ func GetTxCmd() *cobra.Command {
 		RunE:                       client.ValidateCmd,
 	}
 
-	// this line is used by starport scaffolding # 1
+	cmd.AddCommand(CmdCreatePayForMessage())
 
 	return cmd
 }