feat: add version command

cmd/root.go

@@ -26,8 +26,9 @@ var (
 	method    string
 	// TODO: headers   map[string]string
 
-	opts = model.PostMeasurement{}
-	ctx  = model.Context{}
+	opts    = model.PostMeasurement{}
+	ctx     = model.Context{}
+	version string
 )
 
 // rootCmd represents the base command when called without any subcommands
@@ -40,7 +41,8 @@ var rootCmd = &cobra.Command{
 
 // 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() {
+func Execute(ver string) {
+	version = ver
 	err := rootCmd.Execute()
 	if err != nil {
 		os.Exit(1)

cmd/version.go

@@ -0,0 +1,19 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version number of Globalping CLI",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("Globalping CLI " + version)
+	},
+}

main.go

@@ -2,6 +2,11 @@ package main
 
 import "github.com/jsdelivr/globalping-cli/cmd"
 
+var (
+	// https://goreleaser.com/cookbooks/using-main.version/
+	version = "dev"
+)
+
 func main() {
-	cmd.Execute()
+	cmd.Execute(version)
 }