goal: added "wallet new -n" non-interactive wallet creation

cmd/goal/messages.go

@@ -174,6 +174,7 @@ const (
 	infoPasswordConfirmation     = "Please confirm the password: "
 	infoCreatingWallet           = "Creating wallet..."
 	infoCreatedWallet            = "Created wallet '%s'"
+	infoSkipPassword             = "Skipping password prompt"
 	infoBackupExplanation        = "Your new wallet has a backup phrase that can be used for recovery.\nKeeping this backup phrase safe is extremely important.\nWould you like to see it now? (Y/n): "
 	infoPrintedBackupPhrase      = "Your backup phrase is printed below.\nKeep this information safe -- never share it with anyone!"
 	infoBackupPhrase             = "\n%s"

cmd/goal/wallet.go

@@ -33,6 +33,7 @@
 
 var (
 	recoverWallet     bool
+	noPassword        bool
 	defaultWalletName string
 )
 
@@ -45,6 +46,7 @@
 
 	// Should we recover the wallet?
 	newWalletCmd.Flags().BoolVarP(&recoverWallet, "recover", "r", false, "Recover the wallet from the backup mnemonic provided at wallet creation (NOT the mnemonic provided by goal account export or by algokey). Regenerate accounts in the wallet with `goal account new`")
+	newWalletCmd.Flags().BoolVarP(&noPassword, "non-interactive", "n", false, "Create the new wallet without prompting for password or displaying the seed phrase")
 }
 
 var walletCmd = &cobra.Command{
@@ -113,17 +115,23 @@
 			}
 		}
 
-		// Fetch a password for the wallet
-		fmt.Printf(infoChoosePasswordPrompt, walletName)
-		walletPassword := ensurePassword()
+		walletPassword := []byte{}
 
-		// Confirm the password
-		fmt.Printf(infoPasswordConfirmation)
-		passwordConfirmation := ensurePassword()
+		if noPassword {
+			reportInfoln(infoSkipPassword)
+		} else {
+			// Fetch a password for the wallet
+			fmt.Printf(infoChoosePasswordPrompt, walletName)
+			walletPassword = ensurePassword()
 
-		// Check the password confirmation
-		if !bytes.Equal(walletPassword, passwordConfirmation) {
-			reportErrorln(errorPasswordConfirmation)
+			// Confirm the password
+			fmt.Print(infoPasswordConfirmation)
+			passwordConfirmation := ensurePassword()
+
+			// Check the password confirmation
+			if !bytes.Equal(walletPassword, passwordConfirmation) {
+				reportErrorln(errorPasswordConfirmation)
+			}
 		}
 
 		// Create the wallet
@@ -134,7 +142,7 @@
 		}
 		reportInfof(infoCreatedWallet, walletName)
 
-		if !recoverWallet {
+		if !recoverWallet && !noPassword {
 			// Offer to print backup seed
 			fmt.Printf(infoBackupExplanation)
 			resp, err := reader.ReadString('\n')