Added a simple setup command

cmd/setup.go

@@ -0,0 +1,81 @@
+package cmd
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/user"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	configDirectory string      = strings.Join([]string{getHomeDir(), ".muldap"}, "/")
+	configFile      string      = "config.toml"
+	configFilePath  string      = strings.Join([]string{configDirectory, configFile}, "/")
+	defaultPerms    os.FileMode = 0700
+)
+
+func init() {
+	rootCmd.AddCommand(setupCmd)
+}
+
+var setupCmd = &cobra.Command{
+	Use:   "setup",
+	Short: "Set up your user environment for muldap",
+	Long:  "An easy way to get your environment up and running using muldap",
+	Run: func(cmd *cobra.Command, args []string) {
+		// check if the configuration directory exists
+		if _, err := os.Stat(configDirectory); os.IsNotExist(err) {
+			fmt.Printf("Creating new configuration directory at %s\n", configDirectory)
+			_ = os.Mkdir(configDirectory, defaultPerms)
+		}
+
+		// check if the configuration file exists
+		if _, err := os.Stat(configFilePath); os.IsNotExist(err) {
+			fmt.Printf("Creating new configuration file at %s\n", configFilePath)
+			_, err = os.Create(configFilePath)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			// write the configuration to the new file
+			copyFile("./config.toml", configFilePath)
+		} else {
+			// notify the user the file already exists
+			fmt.Printf("Your configuration file already exists at %s\n", configFilePath)
+		}
+	},
+}
+
+// get user's home directory
+func getHomeDir() string {
+	usr, err := user.Current()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return usr.HomeDir
+}
+
+// copy a file
+func copyFile(src, dst string) {
+	in, err := os.OpenFile(src, os.O_RDONLY, os.ModeAppend)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer in.Close()
+
+	out, err := os.OpenFile(dst, os.O_WRONLY, os.ModeAppend)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, in)
+	if err != nil {
+		log.Fatal(err)
+	}
+}