added color support

cli/meta/version.go

@@ -1,4 +1,4 @@
 package meta
 
-const VERSION = "v0.2.3"
+const VERSION = "v0.2.1"
 

cli/upgrade.go

@@ -26,7 +26,7 @@ import (
 // I wrote most of it before I remembered that GitHub has an API so expect major refactoring.
 func (z *ZVM) Upgrade() error {
 
-	upgradable, tagName, err := canIUpgrade()
+	upgradable, tagName, err := CanIUpgrade()
 	if err != nil {
 		return errors.Join(ErrFailedUpgrade, err)
 	}
@@ -217,7 +217,7 @@ func isSymlink(path string) (bool, error) {
 
 
 
-func canIUpgrade() (bool, string, error) {
+func CanIUpgrade() (bool, string, error) {
 	release, err := getLatestGitHubRelease("tristanisham", "zvm")
 	if err != nil {
 		return false, "", err

main.go

@@ -26,9 +26,12 @@ func main() {
 
 	if len(args) == 0 {
 		helpMsg()
+		alertIfUpgradable(zvm.Settings.UseColor)
 		os.Exit(0)
 	}
 
+	alertIfUpgradable(zvm.Settings.UseColor)
+
 	for i, arg := range args {
 		switch arg {
 		case "install", "i":
@@ -128,3 +131,24 @@ func helpMsg() {
 		return
 	}
 }
+
+// alertIfUpgradable checks to see if a new version of ZVM is out, and alerts the user via stdout.
+func alertIfUpgradable(colors bool) {
+
+	if _, noCheckUpgrade := os.LookupEnv("ZVM_NO_CHECK_UPDATE"); !noCheckUpgrade {
+		upgradable, tagName, err := cli.CanIUpgrade()
+		if err != nil {
+			log.Info("failed new zvm version check")
+		}
+
+		if upgradable {
+			coloredText := "zvm upgrade"
+			if colors {
+				coloredText = clr.Blue("zvm upgrade")
+			}
+
+			fmt.Printf("There's a new version of ZVM (%s).\n Run '%s' to install it!\n", tagName, coloredText)
+		}
+	}
+
+}