Improve web service related aspects

internal/service/web.go

@@ -1,15 +1,66 @@
 package service
 
 import (
+	"crypto/tls"
 	"log"
 	"net/http"
+	"strconv"
+	"time"
 )
 
-func WebService() {
-	log.Printf("[Info] Starting web service")
-	log.Printf("[Info] Web service started on 0.0.0.0:2233")
-	err := http.ListenAndServe("0.0.0.0:2233", nil)
+func getServerAddress(host string, port int) string {
+	return host + ":" + strconv.Itoa(port)
+}
+
+func CreateWebService() *http.Server {
+	log.Printf("[Info] Create web service")
+	config, err := GetConfig()
 	if err != nil {
-		log.Fatalf("[Error] Failed to start server: %v", err)
+		log.Fatalf("[Error] Failed to load config: %v", err)
+	}
+
+	addr := getServerAddress(config.Server.Host, config.Server.Port)
+
+	server := &http.Server{
+		Addr:           addr,
+		ReadTimeout:    time.Duration(config.Server.Advanced.Readtimeout) * time.Second,
+		WriteTimeout:   time.Duration(config.Server.Advanced.Writetimeout) * time.Second,
+		IdleTimeout:    time.Duration(config.Server.Advanced.Idletimeout) * time.Second,
+		MaxHeaderBytes: config.Server.Advanced.Maxheaderbytes << 16,
+	}
+	if config.Server.Tls.Enabled {
+		log.Printf("[Info] TLS enabled")
+		server.TLSConfig = &tls.Config{
+			PreferServerCipherSuites: true,
+			SessionTicketsDisabled:   false,
+		}
+	}
+	return server
+}
+
+func ListenWebService(server *http.Server) {
+	config, err := GetConfig()
+	if err != nil {
+		log.Fatalf("[Error] Failed to load config: %v", err)
+	}
+	addr := getServerAddress(config.Server.Host, config.Server.Port)
+	if config.Server.Tls.Enabled {
+		log.Printf("[Info] Starting HTTPS server on %s", addr)
+		err := server.ListenAndServeTLS(
+			config.Server.Tls.Cert,
+			config.Server.Tls.Key,
+		)
+		if err != nil {
+			log.Fatalf("[Error] HTTPS server failed: %v", err)
+		}
+	} else {
+		log.Printf("[Info] Starting HTTP server on %s", addr)
+		err := server.ListenAndServe()
+		if err != nil {
+			log.Fatalf("[Error] HTTP server failed: %v", err)
+		}
+	}
+	if err != nil && err != http.ErrServerClosed {
+		log.Fatalf("[Error] Web server terminated unexpectedly: %v", err)
 	}
 }