added user Session Handler --> closed #20

Backend/endpoints/user.go

@@ -0,0 +1,45 @@
+package endpoints
+
+import (
+	"arbeitszeitmessung/helper"
+	"net/http"
+)
+
+func UserHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.PathValue("action") {
+	case "login":
+		LoginHandler(w, r)
+	case "settings":
+		UserSettingsHandler(w, r)
+	case "logout":
+		logoutUser(w, r)
+	}
+}
+
+func LoginHandler(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case http.MethodGet:
+		showLoginPage(w, r, false)
+	case http.MethodPost:
+		loginUser(w, r)
+	default:
+		http.Error(w, "Method not allowed!", http.StatusMethodNotAllowed)
+	}
+}
+
+func UserSettingsHandler(w http.ResponseWriter, r *http.Request) {
+	helper.RequiresLogin(Session, w, r)
+	switch r.Method {
+	case http.MethodGet:
+		showUserPage(w, r, 0)
+	case http.MethodPost:
+		switch r.FormValue("action") {
+		case "change-pass":
+			changePassword(w, r)
+		case "logout-user":
+			logoutUser(w, r)
+		}
+	default:
+		http.Error(w, "Method not allowed!", http.StatusMethodNotAllowed)
+	}
+}