fix: add internal version package and update version handling

- Create internal/version/version.go with version variables
- Update main.go to use internal version package instead of promexporter version
- Set version information directly in metrics registry
- This fixes the issue where version information shows as 'dev', 'unknown', 'unknown'

Author: d0ugal

cmd/main.go

@@ -9,10 +9,10 @@ import (
 	"ghcr-exporter/internal/collectors"
 	"ghcr-exporter/internal/config"
 	"ghcr-exporter/internal/metrics"
+	"ghcr-exporter/internal/version"
 	"github.com/d0ugal/promexporter/app"
 	"github.com/d0ugal/promexporter/logging"
 	promexporter_metrics "github.com/d0ugal/promexporter/metrics"
-	"github.com/d0ugal/promexporter/version"
 )
 
 func main() {
@@ -27,11 +27,9 @@ func main() {
 
 	// Show version if requested
 	if showVersion {
-		versionInfo := version.Get()
-		fmt.Printf("ghcr-exporter %s\n", versionInfo.Version)
-		fmt.Printf("Commit: %s\n", versionInfo.Commit)
-		fmt.Printf("Build Date: %s\n", versionInfo.BuildDate)
-		fmt.Printf("Go Version: %s\n", versionInfo.GoVersion)
+		fmt.Printf("ghcr-exporter %s\n", version.Version)
+		fmt.Printf("Commit: %s\n", version.Commit)
+		fmt.Printf("Build Date: %s\n", version.BuildDate)
 		os.Exit(0)
 	}
 
@@ -73,6 +71,9 @@ func main() {
 	// Initialize metrics registry using promexporter
 	metricsRegistry := promexporter_metrics.NewRegistry("ghcr_exporter_info")
 
+	// Set version info metric with ghcr-exporter version information
+	metricsRegistry.VersionInfo.WithLabelValues(version.Version, version.Commit, version.BuildDate).Set(1)
+
 	// Add custom metrics to the registry
 	ghcrRegistry := metrics.NewGHCRRegistry(metricsRegistry)
 

internal/version/version.go

@@ -0,0 +1,8 @@
+package version
+
+// Version information
+var (
+	Version   = "dev"
+	Commit    = "unknown"
+	BuildDate = "unknown"
+)