feat: self update

cmd/root.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"fmt"
+
 	"github.com/spf13/cobra"
 )
 
@@ -13,5 +15,7 @@ var rootCmd = &cobra.Command{
 }
 
 func Execute() {
-	rootCmd.Execute()
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Println(err)
+	}
 }

cmd/version.go

@@ -5,6 +5,9 @@ import (
 	"runtime"
 
 	"github.com/krau/SaveAny-Bot/common"
+	"github.com/rhysd/go-github-selfupdate/selfupdate"
+
+	"github.com/blang/semver"
 	"github.com/spf13/cobra"
 )
 
@@ -16,3 +19,28 @@ var VersionCmd = &cobra.Command{
 		fmt.Printf("saveany-bot version: %s %s/%s\nBuildTime: %s, Commit: %s\n", common.Version, runtime.GOOS, runtime.GOARCH, common.BuildTime, common.GitCommit)
 	},
 }
+
+var upgradeCmd = &cobra.Command{
+	Use:     "upgrade",
+	Aliases: []string{"up"},
+	Short:   "Upgrade saveany-bot to the latest version",
+	Run: func(cmd *cobra.Command, args []string) {
+		v := semver.MustParse(common.Version)
+		latest, err := selfupdate.UpdateSelf(v, "krau/SaveAny-Bot")
+		if err != nil {
+			fmt.Println("Binary update failed:", err)
+			return
+		}
+		if latest.Version.Equals(v) {
+			fmt.Println("Current binary is the latest version", common.Version)
+		} else {
+			fmt.Println("Successfully updated to version", latest.Version)
+			fmt.Println("Release note:\n", latest.ReleaseNotes)
+		}
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(VersionCmd)
+	rootCmd.AddCommand(upgradeCmd)
+}