add goit initialization check (#140)

cmd/diff.go

@@ -1,6 +1,5 @@
 /*
 Copyright © 2023 NAME HERE <EMAIL ADDRESS>
-
 */
 package cmd
 
@@ -13,28 +12,20 @@ import (
 // diffCmd represents the diff command
 var diffCmd = &cobra.Command{
 	Use:   "diff",
-	Short: "A brief description of your command",
-	Long: `A longer description that spans multiple lines and likely contains examples
-and usage of using your command. For example:
-
-Cobra is a CLI library for Go that empowers applications.
-This application is a tool to generate the needed files
-to quickly create a Cobra application.`,
-	Run: func(cmd *cobra.Command, args []string) {
+	Short: "show changes between commits, commit and working tree, etc",
+	Long:  "show changes between commits, commit and working tree, etc",
+	PreRunE: func(cmd *cobra.Command, args []string) error {
+		if client.RootGoitPath == "" {
+			return ErrGoitNotInitialized
+		}
+		return nil
+	},
+	RunE: func(cmd *cobra.Command, args []string) error {
 		fmt.Println("diff called")
+		return nil
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(diffCmd)
-
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// diffCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// diffCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 }