added fallback middleware

internal/auth/controller.go

@@ -50,6 +50,45 @@ func (s *Service) Signup(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+// Signup handles user signup by decoding request body, hashing the password, and saving user data to the database.
+func (s *Service) ChangePassword(w http.ResponseWriter, r *http.Request) {
+	var err error
+	var login Login
+	var password []byte
+
+	claims, ok := ExtractClaims(r.Context())
+	if !ok {
+		log.Println("Error while extracting claims")
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	if err = json.NewDecoder(r.Body).Decode(&login); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	if len([]byte(login.Password)) > 72 {
+		fmt.Fprint(w, "Password to long, max 72 bytes")
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	if password, err = bcrypt.GenerateFromPassword([]byte(login.Password), 6); err != nil {
+		log.Println("Error: ", err)
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	err = s.db.Model(&model.User{}).Where("id = ?", claims.UserID).Update("password", password).Error
+	if err != nil {
+
+		log.Printf("Error: %v", err)
+		w.WriteHeader(http.StatusInternalServerError)
+	}
+
+	w.WriteHeader(http.StatusOK)
+}
+
 // Login handles user login by decoding request body, verifying credentials, and returning a JWT token.
 func (s *Service) Login(w http.ResponseWriter, r *http.Request) {
 	var login Login