CHANGE: added Frontend + auth

Backend/models/user.go

@@ -2,6 +2,7 @@ package models
 
 import (
 	"fmt"
+	"strings"
 )
 
 type User struct {
@@ -64,3 +65,21 @@ func (u *User) Logout() error {
 	}
 	return nil
 }
+
+func (u *User) GetById(card_uid string) (User, error) {
+	var user User
+	qStr, err := DB.Prepare((`SELECT card_uid, vorname, nachname, hauptbeschaeftigung_ort FROM personal_daten WHERE card_uid = $1;`))
+	if err != nil {
+		return user, err
+	}
+	err = qStr.QueryRow(card_uid).Scan(&user.CardUID, &user.Vorname, &user.Name, &user.HauptbeschaeftigungsOrt)
+	if err != nil{
+		return user, err
+	}
+	return user, nil
+}
+
+func (u *User) Login(password string) bool {
+	userPassword := strings.ToLower(fmt.Sprintf("%s_%s", u.Vorname, u.Name)) //temp password: "max_mustermann"
+	return userPassword == password
+}