root.go

package main

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"

	"github.com/spf13/viper"
)

var cfgFile string

// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
	Use:   "encloud",
	Short: "encloud is a CLI tool for on-boarding sensitive data to Filecoin.",
	Long: `encloud is a CLI tool that enables upload and retrieval of sensitive data from the Filecoin 
			network. It helps in key generation and management, file encryption and key mapping and upload and retrieval of data from the Filecoin network`,
	// Uncomment the following line if your bare application
	// has an action associated with it:
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println(`Encloud is a CLI tool for on-boarding sensitive data to Filecoin.`)
	},
}

// 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() {
	cobra.OnInitialize(initConfig)

	// Here you will define your flags and configuration settings.
	// Cobra supports persistent flags, which, if defined here,
	// will be global for your application.
	RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.cobra.yaml)")
	RootCmd.PersistentFlags().Bool("viper", true, "use Viper for configuration")
	viper.BindPFlag("useViper", RootCmd.PersistentFlags().Lookup("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 := os.UserHomeDir()
		if err != nil {
			fmt.Println(err)
		}

		// Search config in home directory with name ".cobra" (without extension).
		viper.AddConfigPath(home)
		viper.SetConfigType("yaml")
		viper.SetConfigName(".cobra")
	}

	viper.AutomaticEnv()

	if err := viper.ReadInConfig(); err == nil {
		fmt.Println("Using config file:", viper.ConfigFileUsed())
	}
}