From 2098da3417695370598d21ae386be9af1fb90ea5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Magnus=20=C3=85hall?= <magnus.ahall@gibon.se>
Date: Mon, 10 Nov 2025 10:18:34 +0100
Subject: [PATCH] Implemented configurable debugging port, bumped to v2

---
 main.go | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/main.go b/main.go
index 336aa88..4c91f6b 100644
--- a/main.go
+++ b/main.go
@@ -7,6 +7,7 @@ import (
 	"embed"
 	"encoding/json"
 	"flag"
+	"fmt"
 	"html/template"
 	"io"
 	"log"
@@ -16,12 +17,12 @@ import (
 	"strings"
 )
 
-const VERSION = "v1"
+const VERSION = "v2"
 
 var (
-	flagVerbose bool
-	flagWsURL   string
-	flagWatch   string
+	flagVerbose       bool
+	flagVersion       bool
+	flagDebuggingPort int
 
 	//go:embed static
 	fs embed.FS
@@ -29,10 +30,15 @@ var (
 
 func main() {
 	flag.BoolVar(&flagVerbose, "v", false, "verbose")
-	flag.StringVar(&flagWsURL, "ws", "ws://127.0.0.1:9222", "devtools url")
-	flag.StringVar(&flagWatch, "watch", "", "Files to watch")
+	flag.BoolVar(&flagVersion, "version", false, "Print version and exit")
+	flag.IntVar(&flagDebuggingPort, "port", 9222, "Chrome debugging port")
 	flag.Parse()
 
+	if flagVersion {
+		fmt.Println(VERSION)
+		return
+	}
+
 	http.HandleFunc("/", pageIndex)
 	http.HandleFunc("/css/main.css", pageCSS)
 
@@ -46,7 +52,7 @@ func main() {
 	http.ListenAndServe("[::]:5123", nil)
 }
 
-func replaceTilde(str string) string {// {{{
+func replaceTilde(str string) string { // {{{
 	homedir, err := os.UserHomeDir()
 	if err != nil {
 		log.Println(err)
@@ -58,7 +64,7 @@ func replaceTilde(str string) string {// {{{
 	}
 
 	return str
-}// }}}
+} // }}}
 
 func pageIndex(w http.ResponseWriter, r *http.Request) { // {{{
 	var tmpl *template.Template
@@ -73,7 +79,7 @@ func pageIndex(w http.ResponseWriter, r *http.Request) { // {{{
 	}
 
 	data := map[string]any{
-		"Sites": sites,
+		"Sites":   sites,
 		"VERSION": VERSION,
 	}
 	tmpl.Execute(w, data)
@@ -91,7 +97,7 @@ func pageCSS(w http.ResponseWriter, r *http.Request) { // {{{
 } // }}}
 func actionSites(w http.ResponseWriter, r *http.Request) { // {{{
 	j, _ := json.Marshal(struct {
-		OK bool
+		OK    bool
 		Sites map[string]*Site
 	}{
 		true,
@@ -100,17 +106,17 @@ func actionSites(w http.ResponseWriter, r *http.Request) { // {{{
 	w.Write(j)
 } // }}}
 
-func actionBrowserStart(w http.ResponseWriter, r *http.Request) {// {{{
+func actionBrowserStart(w http.ResponseWriter, r *http.Request) { // {{{
 	body, _ := io.ReadAll(r.Body)
 	userDataDir := replaceTilde(string(body))
-	browser := exec.Command("google-chrome", "--user-data-dir="+string(userDataDir), "--remote-debugging-port=9222")
+	browser := exec.Command("google-chrome", "--user-data-dir="+string(userDataDir), fmt.Sprintf("--remote-debugging-port=%d", flagDebuggingPort))
 	err := browser.Start()
 	if err != nil {
 		log.Println(err)
 	} else {
 		go browser.Wait()
 	}
-}// }}}
+} // }}}
 func actionStart(w http.ResponseWriter, r *http.Request) { // {{{
 	var req struct {
 		URL   string
@@ -133,7 +139,8 @@ func actionStart(w http.ResponseWriter, r *http.Request) { // {{{
 
 	var site Site
 	expandedWatch := replaceTilde(req.Watch)
-	site, err = NewSite(flagWsURL, req.URL, expandedWatch)
+	wsURL := fmt.Sprintf("ws://127.0.0.1:%d", flagDebuggingPort)
+	site, err = NewSite(wsURL, req.URL, expandedWatch)
 	if err != nil {
 		log.Println(err)
 	}