feat: add --version flag

resolves #17

.releaserc.js

@@ -3,6 +3,33 @@
 const plugins = [
   "@semantic-release/commit-analyzer",
   "@semantic-release/release-notes-generator",
+  [
+    "semantic-release-replace-plugin",
+    {
+      "replacements": [
+        {
+          "files": ["version.go"],
+          "from": "const VERSION = \".*\"",
+          "to": "const VERSION = \"${nextRelease.version}\"",
+          "results": [
+            {
+              "file": "version.go",
+              "hasChanged": true,
+              "numMatches": 1,
+              "numReplacements": 1
+            }
+          ],
+          "countMatches": true
+        }
+      ]
+    }
+  ],
+  [
+    "@semantic-release/git",
+    {
+      "assets": ["version.go"]
+    }
+  ],
   [
     "@semantic-release/exec",
     {

README.md

@@ -40,6 +40,7 @@ ts -L sleep sleep 30
 | `--host`      | `TSP_WEB_HOSTNAME`  | The hostname to run TSP-Web on                      | `192.168.0.20`                          | `localhost` |
 | `--log-level` | `TSP_WEB_LOG_LEVEL` | The log level can be `'debug' or 'info' or 'warn'`  | `warn`                                  | `info`      |
 | `--no-color`  | -                   | Whether the logs should be displayed without colors | -                                       | `false`     |
+| `--version`   | -                   | Prints the version                                  | -                                       |             |
 
 ### Configuration
 

internal/args/args.go

@@ -7,4 +7,5 @@ type TspWebArgs struct {
 	LogLevel   string
 	NoColor    bool
 	Host       string
+	Version    bool
 }

main.go

@@ -29,11 +29,14 @@ func parseArgs() (args.TspWebArgs, error) {
 	logLevel := flag.String("log-level", utils.Getenv("TSP_WEB_LOG_LEVEL", "info"), "The log level for tsp-web")
 	noColor := flag.Bool("no-color", false, "Disable colorized output")
 	host := flag.String("host", utils.Getenv("TSP_WEB_HOSTNAME", "localhost"), "The host for tsp-web")
+	version := flag.Bool("version", false, "Print the version and exit")
 
 	flag.Parse()
 
 	if *portArg > maxPort {
-		return args.TspWebArgs{}, fmt.Errorf("invalid value \"%d\" for flag -port: parse error", *portArg)
+		log.Errorf("invalid value \"%d\" for flag -port: value out of range", *portArg)
+		flag.Usage()
+		os.Exit(1)
 	}
 
 	Port := uint16(*portArg)
@@ -43,7 +46,9 @@ func parseArgs() (args.TspWebArgs, error) {
 		Port:     Port,
 		LogLevel: *logLevel,
 		NoColor:  *noColor,
-		Host:     *host}, nil
+		Host:     *host,
+		Version:  *version,
+	}, nil
 }
 
 func setLogLevel(logLevel string) {
@@ -63,18 +68,18 @@ func main() {
 	api.Static = static
 
 	args, err := parseArgs()
+
+	if args.Version {
+		fmt.Println(VERSION)
+		os.Exit(0)
+	}
+
 	setLogLevel(args.LogLevel)
 	log.SetFormatter(&log.TextFormatter{
 		FullTimestamp: true,
 		DisableColors: args.NoColor,
 	})
 
-	if err != nil {
-		log.Error(err)
-		flag.Usage()
-		os.Exit(1)
-	}
-
 	userconf.Load(args)
 	go userconf.StartWatcher(args)
 	err = api.Run(args)