Use ghru/v2 for latest version checks and self-update functionality

go.mod

@@ -1,14 +1,14 @@
 module github.com/axllent/goptimize
 
-go 1.21
+go 1.23.0
 
-toolchain go1.22.2
+toolchain go1.23.1
 
 require (
-	github.com/axllent/ghru v1.2.1
+	github.com/axllent/ghru/v2 v2.0.1
 	github.com/kovidgoyal/imaging v1.6.3
 	github.com/spf13/pflag v1.0.5
 	golang.org/x/image v0.18.0
 )
 
-require github.com/axllent/semver v0.0.1 // indirect
+require golang.org/x/mod v0.25.0 // indirect

go.sum

@@ -1,10 +1,10 @@
-github.com/axllent/ghru v1.2.1 h1:PuJQQeILJJ42O9nvjTwObWQGZDyZ9/F71st9jNAqgoU=
-github.com/axllent/ghru v1.2.1/go.mod h1:YgznIILRJpnII5x8N080q/G8Milzk3sy9Sh4dV1eGQw=
-github.com/axllent/semver v0.0.1 h1:QqF+KSGxgj8QZzSXAvKFqjGWE5792ksOnQhludToK8E=
-github.com/axllent/semver v0.0.1/go.mod h1:2xSPzvG8n9mRfdtxSvWvfTfQGWfHsMsHO1iZnKATMSc=
+github.com/axllent/ghru/v2 v2.0.1 h1:/9XHbMqJRGRxlyNMq2XiHQpBLz7hlq8xCdgJ4ZhjCoM=
+github.com/axllent/ghru/v2 v2.0.1/go.mod h1:seMMjx8/0r5ZAL7c0vwTPIRoyN0AoTUqAylZEWZWGK4=
 github.com/kovidgoyal/imaging v1.6.3 h1:iNPpv7ygiaB/NOztc6APMT7yr9UwBS+rOZwIbAdtyY8=
 github.com/kovidgoyal/imaging v1.6.3/go.mod h1:sHvcLOOVhJuto2IoNdPLEqnAUoL5ZfHEF0PpNH+882g=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 golang.org/x/image v0.18.0 h1:jGzIakQa/ZXI1I0Fxvaa9W7yP25TqT6cHIHn+6CqvSQ=
 golang.org/x/image v0.18.0/go.mod h1:4yyo5vMFQjVjUcVk4jEQcU9MGy/rulF5WvUILseCM2E=
+golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
+golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=

main.go

@@ -1,3 +1,4 @@
+// Package main is the main application
 package main
 
 import (
@@ -9,7 +10,7 @@ import (
 	"strconv"
 	"sync"
 
-	"github.com/axllent/ghru"
+	"github.com/axllent/ghru/v2"
 	"github.com/spf13/pflag"
 )
 
@@ -27,6 +28,13 @@ var (
 	copyExif         bool
 	threads          = 1
 	version          = "dev"
+	// ghruConf is the configuration for the ghru package
+	ghruConf = ghru.Config{
+		Repo:           "axllent/goptimize",
+		ArchiveName:    "goptimize-{{.OS}}-{{.Arch}}",
+		BinaryName:     "goptimize",
+		CurrentVersion: version,
+	}
 )
 
 func main() {
@@ -55,7 +63,7 @@ func main() {
 	}
 
 	var maxSizes string
-	var multiThreaded, update, showversion, showhelp bool
+	var multiThreaded, update, showVersion, showHelp bool
 
 	flag.IntVarP(&quality, "quality", "q", 75, "quality, JPEG only")
 	flag.StringVarP(&maxSizes, "max", "m", "", "downscale to a maximum width & height in pixels (<width>x<height>)")
@@ -64,8 +72,8 @@ func main() {
 	flag.BoolVarP(&copyExif, "exif", "e", false, "copy exif data")
 	flag.BoolVarP(&update, "update", "u", false, "update to latest release")
 	flag.BoolVarP(&multiThreaded, "threaded", "t", false, "run multi-threaded (use all CPU cores)")
-	flag.BoolVarP(&showversion, "version", "v", false, "show version number")
-	flag.BoolVarP(&showhelp, "help", "h", false, "show help")
+	flag.BoolVarP(&showVersion, "version", "v", false, "show version number")
+	flag.BoolVarP(&showHelp, "help", "h", false, "show help")
 
 	// third-party optimizers
 	flag.StringVar(&jpegtran, "jpegtran", "jpegtran", "jpegtran binary")
@@ -86,28 +94,44 @@ func main() {
 	optipng, _ = exec.LookPath(optipng)
 	pngquant, _ = exec.LookPath(pngquant)
 
-	if showhelp {
+	if showHelp {
 		flag.Usage()
 		os.Exit(1)
 	}
 
-	if showversion {
-		fmt.Println(fmt.Sprintf("Version: %s", version))
-		latest, _, _, err := ghru.Latest("axllent/goptimize", "goptimize")
-		if err == nil && ghru.GreaterThan(latest, version) {
-			fmt.Printf("Update available: %s\nRun `%s -u` to update.\n", latest, os.Args[0])
+	if showVersion {
+		fmt.Printf("Version: %s\n", version)
+
+		release, err := ghruConf.Latest()
+		if err != nil {
+			fmt.Printf("Error getting latest release: %s\n", err.Error())
+			os.Exit(1)
 		}
-		return
+
+		// The latest version is the same version
+		if release.Tag == version {
+			os.Exit(0)
+		}
+
+		// A newer release is available
+		fmt.Printf(
+			"Update available: %s\nRun `%s -u` to update (requires read/write access to install directory).\n",
+			release.Tag,
+			os.Args[0],
+		)
+		os.Exit(0)
 	}
 
 	if update {
-		rel, err := ghru.Update("axllent/goptimize", "goptimize", version)
+		// Update the app
+		rel, err := ghruConf.SelfUpdate()
 		if err != nil {
-			fmt.Println(err)
+			fmt.Println(err.Error())
 			os.Exit(1)
 		}
-		fmt.Printf("Updated %s to version %s\n", os.Args[0], rel)
-		return
+
+		fmt.Printf("Updated %s to version %s\n", os.Args[0], rel.Tag)
+		os.Exit(0)
 	}
 
 	if len(flag.Args()) < 1 {