vgo - fixing up the root template

cobra/cmd/init.go

@@ -56,20 +56,38 @@ Init will not use an existing directory with contents.`,
 				PkgName:      pkgName,
 				Legal:        getLicense(),
 				Copyright:    copyrightLine(),
+				// viper
+				// appname
 			}
 
-			// open file for writing
+			// create main.go
-			f, err := os.Create(fmt.Sprintf("%s/main.go", project.AbsolutePath))
+			mainFile, err := os.Create(fmt.Sprintf("%s/main.go", project.AbsolutePath))
 			if err != nil {
 				er(err)
 			}
-			defer f.Close()
+			defer mainFile.Close()
 
-			t := template.Must(template.New("init").Parse(string(tpl.MainTemplate())))
+			mainTemplate := template.Must(template.New("main").Parse(string(tpl.MainTemplate())))
-			err = t.Execute(f, project)
+			err = mainTemplate.Execute(mainFile, project)
 			if err != nil {
 				er(err)
 			}
+
+			// create cmd/root.go
+			rootFile, err := os.Create(fmt.Sprintf("%s/cmd/root.go", project.AbsolutePath))
+			if err != nil {
+				er(err)
+			}
+			defer rootFile.Close()
+
+			rootTemplate := template.Must(template.New("root").Parse(string(tpl.RootTemplate())))
+			err = rootTemplate.Execute(rootFile, project)
+			if err != nil {
+				er(err)
+			}
+
+			createLicenseFile(project.Legal, project.AbsolutePath)
+
 			/*
 				wd, err := os.Getwd()
 				if err != nil {

cobra/tpl/main.go

@@ -4,7 +4,7 @@ func MainTemplate() []byte {
 	return []byte(`
 /*
 {{ .Copyright }}
-{{if .Legal.Header}}{{ .Legal.Header }}{{end}}
+{{ if .Legal.Header }}{{ .Legal.Header }}{{ end }}
 */
 package main
 
@@ -15,3 +15,97 @@ func main() {
 }
 `)
 }
+
+func RootTemplate() []byte {
+	return []byte(`
+/*
+{{ .Copyright }}
+{{ if .Legal.Header }}{{ .Legal.Header }}{{ end }}
+*/
+package cmd
+
+import (
+	"fmt"
+	"os"
+  "github.com/spf13/cobra"
+{{ if .Viper }}
+	homedir "github.com/mitchellh/go-homedir"
+	"github.com/spf13/viper"
+{{ end }}
+)
+
+{{ if .Viper }}
+var cfgFile string
+{{ end }}
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "{{ .AppName }}",
+	Short: "A brief description of your application",
+	Long: ` + "`" + `A longer description that spans multiple lines and likely contains
+examples and usage of using your application. 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.` + "`" + `,
+	// Uncomment the following line if your bare application
+	// has an action associated with it:
+	//	Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}
+
+func init() {
+{{- if .Viper }}
+	cobra.OnInitialize(initConfig)
+{{ end }}
+	// Here you will define your flags and configuration settings.
+	// Cobra supports persistent flags, which, if defined here,
+	// will be global for your application.
+{{ if .Viper }}
+	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.{{ .AppName }}.yaml)")
+{{ else }}
+	// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.{{ .AppName }}.yaml)")
+{{ end }}
+
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+{{ if .Viper }}
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile != "" {
+		// Use config file from the flag.
+		viper.SetConfigFile(cfgFile)
+	} else {
+		// Find home directory.
+		home, err := homedir.Dir()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		// Search config in home directory with name ".{{ .appName }}" (without extension).
+		viper.AddConfigPath(home)
+		viper.SetConfigName(".{{ .appName }}")
+	}
+
+	viper.AutomaticEnv() // read in environment variables that match
+
+	// If a config file is found, read it in.
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
+	}
+}
+{{ end }}
+`)
+}