Check the version of the tool at start time

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/charmbracelet/bubbletea v0.24.1
 	github.com/charmbracelet/lipgloss v0.9.1
 	github.com/cli/go-gh v1.2.1
-	github.com/hashicorp/go-version v1.6.0
+	github.com/hashicorp/go-version v1.7.0
 	github.com/spf13/cobra v1.8.0
 )
 

go.sum

@@ -24,8 +24,8 @@ github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 h1:2VTzZjLZBgl62/EtslCrtky5vbi9dd7HrQPQIx6wqiw=
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542/go.mod h1:Ow0tF8D4Kplbc8s8sSb3V2oUCygFHVp8gC3Dn6U4MNI=
-github.com/hashicorp/go-version v1.6.0 h1:feTTfFNnjP967rlCxM/I9g701jU+RN74YKx2mOkIeek=
-github.com/hashicorp/go-version v1.6.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
+github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
+github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/henvic/httpretty v0.0.6 h1:JdzGzKZBajBfnvlMALXXMVQWxWMF/ofTy8C3/OSUTxs=
 github.com/henvic/httpretty v0.0.6/go.mod h1:X38wLjWXHkXT7r2+uK8LjCMne9rsuNaBLJ+5cU2/Pmo=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=

go/cmd/cmd.go

@@ -34,7 +34,7 @@ import (
 	"github.com/vitessio/vitess-releaser/go/releaser/utils"
 )
 
-const VERSION = "v1.0"
+const VERSION = "v1.0.2"
 
 var (
 	releaseVersion     string
@@ -73,7 +73,7 @@ func init() {
 	rootCmd.PersistentFlags().IntVarP(&rcIncrement, flags.RCIncrement, "", 0, "Define the release as an RC release, value is used to determine the number of the RC.")
 	rootCmd.PersistentFlags().StringVarP(&releaseVersion, flags.MajorRelease, "r", "", "Number of the major release on which we want to create a new release.")
 	rootCmd.PersistentFlags().StringVarP(&vtopReleaseVersion, flags.VtOpRelease, "", "", "Number of the major and minor release on which we want to create a new release, i.e. '2.11', leave empty for no vtop release.")
-	rootCmd.PersistentFlags().BoolVarP(&version, "version", "v", false, "Prints the version and git commit hash.")
+	rootCmd.PersistentFlags().BoolVarP(&version, "version", "v", false, "Prints the version.")
 
 	err := cobra.MarkFlagRequired(rootCmd.PersistentFlags(), flags.MajorRelease)
 	if err != nil {
@@ -223,9 +223,7 @@ func getGitRepos() (vitessRepo, vtopRepo string) {
 }
 
 func printVersionAndExit() {
-	commit, shortHash := getGitCommit()
-	fmt.Printf("Version: %s.%s\n", VERSION, shortHash)
-	fmt.Printf("Last Commit: %s\n", commit)
+	fmt.Printf("Version: %s\n", VERSION)
 	os.Exit(0)
 }
 

main.go

@@ -17,13 +17,76 @@ limitations under the License.
 package main
 
 import (
+	"encoding/json"
 	"fmt"
-	"github.com/vitessio/vitess-releaser/go/cmd"
+	"log"
+	"net/http"
 	"os"
 	"os/exec"
 	"runtime/debug"
+	"time"
+
+	"github.com/hashicorp/go-version"
+	"github.com/vitessio/vitess-releaser/go/cmd"
 )
 
+// Struct to hold the GitHub API response
+type githubRelease struct {
+	TagName string `json:"tag_name"`
+}
+
+// getLatestVersionFromGitHub queries the GitHub API for the latest release version
+func getLatestVersionFromGitHub() (string, error) {
+	const url = "https://api.github.com/repos/vitessio/vitess-releaser/releases/latest"
+
+	client := &http.Client{
+		Timeout: 10 * time.Second,
+	}
+
+	resp, err := client.Get(url)
+	if err != nil {
+		return "", fmt.Errorf("error fetching latest release info: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("failed to fetch latest version, status code: %d", resp.StatusCode)
+	}
+
+	var release githubRelease
+	if err := json.NewDecoder(resp.Body).Decode(&release); err != nil {
+		return "", fmt.Errorf("error decoding response: %w", err)
+	}
+
+	return release.TagName, nil
+}
+
+// compareVersions checks if the current version is the latest and prints a message
+func compareVersions() {
+	latestVersionStr, err := getLatestVersionFromGitHub()
+	if err != nil {
+		fmt.Println("Could not check for updates:", err.Error())
+		os.Exit(1)
+	}
+
+	currentVersion, err := version.NewVersion(cmd.VERSION[1:])
+	if err != nil {
+		log.Fatalf("Error parsing current version: %v", err)
+	}
+
+	latestVersion, err := version.NewVersion(latestVersionStr[1:])
+	if err != nil {
+		log.Fatalf("Error parsing latest version: %v", err)
+	}
+
+	if currentVersion.LessThan(latestVersion) {
+		fmt.Printf("A new version of the tool is available: %s (you have %s)\n", latestVersionStr, cmd.VERSION)
+		fmt.Println("Please update to the latest version.")
+		fmt.Println("\n\tgo install github.com/vitessio/vitess-releaser@latest\n")
+		os.Exit(1)
+	}
+}
+
 // On some shells the terminal is left in a bad state possibly because the debug output is large or
 // it contains control characters. This function restores the terminal to a sane state on a panic.
 func restoreTerminal() {
@@ -43,5 +106,7 @@ func main() {
 		}
 	}()
 
+	compareVersions()
+
 	cmd.Execute()
 }