change: refractored and seperated all code into different parts

Backend/endpoints/logout.go

@@ -0,0 +1,41 @@
+package endpoints
+
+import (
+	"arbeitszeitmessung/helper"
+	"arbeitszeitmessung/models"
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
+func LogoutHandler(w http.ResponseWriter, r *http.Request) {
+	helper.SetCors(w)
+	switch r.Method {
+	case "GET":
+		autoLogout(w)
+	default:
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+	}
+}
+
+func autoLogout(w http.ResponseWriter) {
+	users, err := (*models.User).GetAll(nil)
+	var logged_out_users []models.User
+	if err != nil {
+		fmt.Printf("Error getting user list %v\n", err)
+	}
+	for _, user := range users {
+		if user.CheckAnwesenheit() {
+			err = user.Logout()
+			if err != nil {
+				fmt.Printf("Error logging out user %v\n", err)
+			}
+			logged_out_users = append(logged_out_users, user)
+		}
+
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(logged_out_users)
+
+}