feat: cleaner implementation of port in config

config.example.yaml

@@ -7,8 +7,7 @@ host: tinshop.example.com
 protocol: https
 
 # Port [optional]
-# This only affect the url to download games. The web server still run on port 3000.
-# If you change the port, you will need to set up a reverse proxy
+# This affect the url to download games & the web server will run on that port (default: 3000).
 # port: 3000
 
 # Shop name [optional]

config/config.go

@@ -136,7 +136,7 @@ func ComputeDefaultValues(config repository.Config) repository.Config {
 		// Retrieve current IP
 		host, _ := os.Hostname()
 		addrs, _ := net.LookupIP(host)
-		var myIP = ""
+		var myIP = "0.0.0.0"
 		for _, addr := range addrs {
 			if ipv4 := addr.To4(); ipv4 != nil {
 				if myIP == "" {

main.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"strconv"
 	"time"
 
 	"github.com/DblK/tinshop/api"
@@ -83,9 +84,14 @@ func createShop() TinShop {
 	r.Use(shop.CORSMiddleware)
 	http.Handle("/", r)
 
+	var port = 3000
+	if shop.Shop.Config.Port() != 0 {
+		port = shop.Shop.Config.Port()
+	}
+
 	srv := &http.Server{
 		Handler: r,
-		Addr:    "0.0.0.0:3000",
+		Addr:    "0.0.0.0:" + strconv.Itoa(port),
 
 		// Good practice to set timeouts to avoid Slowloris attacks.
 		WriteTimeout: 0, // Installing large game can take a lot of time