refactor client

examples/basecoin/x/cool/commands/cooltx.go

@@ -0,0 +1,51 @@
+package commands
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+
+	"github.com/cosmos/cosmos-sdk/client/builder"
+	"github.com/cosmos/cosmos-sdk/wire"
+
+	"github.com/cosmos/cosmos-sdk/examples/basecoin/x/cool"
+)
+
+// SendTxCommand will create a send tx and sign it with the given key
+func WhatCoolTxCmd(cdc *wire.Codec) *cobra.Command {
+	cmdr := commander{cdc}
+	return &cobra.Command{
+		Use:   "whatcool [answer]",
+		Short: "What's cooler than being cool?",
+		RunE:  cmdr.whatCoolTxCmd,
+	}
+}
+
+type commander struct {
+	cdc *wire.Codec
+}
+
+func (c commander) whatCoolTxCmd(cmd *cobra.Command, args []string) error {
+	if len(args) != 1 || len(args[0]) == 0 {
+		return errors.New("You must provide an answer")
+	}
+
+	// get the from address from the name flag
+	from, err := builder.GetFromAddress()
+	if err != nil {
+		return err
+	}
+
+	// create the message
+	msg := cool.NewWhatCoolMsg(from, args[0])
+
+	// build and sign the transaction, then broadcast to Tendermint
+	res, err := builder.SignBuildBroadcast(msg, c.cdc)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Committed at block %d. Hash: %s\n", res.Height, res.Hash.String())
+	return nil
+}