validate the type

Author: Dhia Ayachi

cmd/changelog-gen/main.go

@@ -63,18 +63,19 @@ func main() {
 			os.Exit(1)
 		}
 	}
-
+	typeValues := []string{"enhancement",
+		"feature",
+		"bug",
+		"note",
+		"new-resource",
+		"new-datasource",
+		"deprecation",
+		"breaking-change",
+	}
 	if Type == "" {
 		prompt := promptui.Select{
 			Label: "Select a change type",
-			Items: []string{"enhancement",
-				"bug",
-				"note",
-				"new-resource",
-				"new-datasource",
-				"deprecation",
-				"breaking-change",
-				"none"},
+			Items: typeValues,
 		}
 
 		_, Type, err = prompt.Run()
@@ -85,6 +86,13 @@ func main() {
 			flag.Usage()
 			os.Exit(1)
 		}
+	} else {
+		if !TypeValid(typeValues, Type) {
+			fmt.Fprintln(os.Stderr, "Must specify a valid type")
+			fmt.Fprintln(os.Stderr, "")
+			flag.Usage()
+			os.Exit(1)
+		}
 	}
 
 	if Description == "" {
@@ -131,6 +139,15 @@ func main() {
 	}
 }
 
+func TypeValid(elements []string, Type string) bool {
+	for _, a := range elements {
+		if a == Type {
+			return true
+		}
+	}
+	return false
+}
+
 func OpenGit(path string) (*git.Repository, error) {
 	r, err := git.PlainOpen(path)
 	if err != nil {