Add version information; update release workflow

.github/workflows/release.yml

@@ -29,3 +29,4 @@ jobs:
           goarch: ${{ matrix.goarch }}
           compress_assets: false
           asset_name: pastepass-${{ matrix.goos }}-${{ matrix.goarch }}
+          ldflags: -X "github.com/v1k45/pastepass/config.Version=${{ github.ref_name }}"

config/config.go

@@ -5,4 +5,5 @@ var (
 	AppName    = "PastePass"
 	DBPath     = "pastepass.boltdb"
 	ResetDB    = false
+	Version    = "0.00-dev"
 )

main.go

@@ -2,22 +2,19 @@ package main
 
 import (
 	"flag"
-	"github.com/v1k45/pastepass/config"
+	"fmt"
 	"log"
 	"log/slog"
 	"net/http"
 	"time"
 
+	"github.com/v1k45/pastepass/config"
 	"github.com/v1k45/pastepass/db"
 	"github.com/v1k45/pastepass/web"
 )
 
 func main() {
-	flag.StringVar(&config.ServerAddr, "server-addr", config.ServerAddr, "The server address to listen on")
-	flag.StringVar(&config.AppName, "app-name", config.AppName, "The name of the application (e.g. ACME PastePass)")
-	flag.StringVar(&config.DBPath, "db-path", config.DBPath, "The path to the database file")
-	flag.BoolVar(&config.ResetDB, "reset-db", config.ResetDB, "Reset the database on startup")
-	flag.Parse()
+	parseFlags()
 
 	// Open the database
 	boltdb, err := db.NewDB(config.DBPath, config.ResetDB)
@@ -26,9 +23,23 @@ func main() {
 	}
 	go boltdb.DeleteExpiredPeriodically(time.Minute * 5)
 
-	slog.Info("starting_server", "server_addr", config.ServerAddr, "app_name", config.AppName, "db_name", config.DBPath)
-
 	// Start the web server
+	slog.Info("starting_server", "server_addr", config.ServerAddr, "app_name", config.AppName, "db_name", config.DBPath)
 	handler := web.NewHandler(boltdb)
 	http.ListenAndServe(config.ServerAddr, handler.Router())
 }
+
+func parseFlags() {
+	flag.Usage = func() {
+		fmt.Printf("pastepass - %s\n\n", config.Version)
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage:\n")
+		flag.PrintDefaults()
+	}
+
+	flag.StringVar(&config.ServerAddr, "server-addr", config.ServerAddr, "The server address to listen on")
+	flag.StringVar(&config.AppName, "app-name", config.AppName, "The name of the application (e.g. ACME PastePass)")
+	flag.StringVar(&config.DBPath, "db-path", config.DBPath, "The path to the database file")
+	flag.BoolVar(&config.ResetDB, "reset-db", config.ResetDB, "Reset the database on startup")
+
+	flag.Parse()
+}