add error handling (frontend) + exception changes

Co-authored-by: Christoph <tobi@urpost.de>
Co-authored-by: Mahgs <maxoerter@gmx.de>

src/main/java/mops/gruppen2/controller/Gruppen2Controller.java

@@ -2,19 +2,16 @@ package mops.gruppen2.controller;
 
 import mops.gruppen2.config.Gruppen2Config;
 import mops.gruppen2.domain.Exceptions.EventException;
+import mops.gruppen2.domain.Exceptions.GroupNotFoundException;
 import mops.gruppen2.domain.Group;
 import mops.gruppen2.domain.User;
-import mops.gruppen2.domain.Visibility;
-import mops.gruppen2.domain.event.CreateGroupEvent;
 import mops.gruppen2.security.Account;
 import mops.gruppen2.service.*;
 import org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.*;
-import org.springframework.web.client.RestTemplate;
 import org.springframework.web.context.annotation.SessionScope;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.server.ResponseStatusException;
@@ -125,7 +122,7 @@ public class Gruppen2Controller {
 
     @RolesAllowed({"ROLE_orga", "ROLE_studentin", "ROLE_actuator"})
     @GetMapping("/details")
-    public String showGroupDetails(KeycloakAuthenticationToken token, Model model, @RequestParam(value = "id") Long id) throws EventException, ResponseStatusException {
+    public String showGroupDetails(KeycloakAuthenticationToken token, Model model, @RequestParam(value = "id") Long id) throws ResponseStatusException, EventException {
         model.addAttribute("account", keyCloakService.createAccountFromPrincipal(token));
         Group group = userService.getGroupById(id);
         Account account = keyCloakService.createAccountFromPrincipal(token);
@@ -135,7 +132,7 @@ public class Gruppen2Controller {
             model.addAttribute("role", group.getRoles().get(user.getUser_id()));
             return "detailsMember";
         }
-        throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Group not found");
+        throw new GroupNotFoundException();
     }
 
     @RolesAllowed({"ROLE_orga", "ROLE_studentin", "ROLE_actuator"})
@@ -156,7 +153,7 @@ public class Gruppen2Controller {
             model.addAttribute("group", group);
             return "detailsNoMember";
         }
-        throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Group not found");
+        throw new GroupNotFoundException();
     }
 
     @RolesAllowed({"ROLE_orga", "ROLE_studentin", "ROLE_actuator"})
@@ -168,10 +165,10 @@ public class Gruppen2Controller {
             model.addAttribute("group", group);
             return "redirect:/gruppen2/detailsSearch?id=" + group.getId();
         }
-        throw new ResponseStatusException(HttpStatus.NOT_FOUND, "Group not found");
+        throw new GroupNotFoundException();
     }
 
-    @RolesAllowed({"ROLE_orga", "ROLE_studentin", "ROLE_actuator"})
+    @RolesAllowed({"ROLE_orga", "ROLE_studentin", "ROLE_actuator)"})
     @PostMapping("/leaveGroup")
     public String pLeaveGroup(KeycloakAuthenticationToken token, @RequestParam(value = "group_id") Long id) {
         Account account = keyCloakService.createAccountFromPrincipal(token);
@@ -181,6 +178,6 @@ public class Gruppen2Controller {
 
     @GetMapping("*")
     public String defaultLink() {
-        return "errorRenameLater";
+        return "error";
     }
 }

src/main/java/mops/gruppen2/domain/Exceptions/EventException.java

@@ -1,10 +1,13 @@
 package mops.gruppen2.domain.Exceptions;
 
-public class EventException extends Exception {
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ResponseStatusException;
+
+public class EventException extends ResponseStatusException {
     private String msg;
 
-    public EventException(String msg) {
-        this.msg = msg;
+    public EventException(String msg, HttpStatus status) {
+        super(status, msg);
     }
 
     @Override

src/main/java/mops/gruppen2/domain/Exceptions/GroupIdMismatchException.java

@@ -0,0 +1,13 @@
+package mops.gruppen2.domain.Exceptions;
+
+import org.springframework.http.HttpStatus;
+
+public class GroupIdMismatchException extends EventException {
+    public GroupIdMismatchException(String msg) {
+        super("Falsche Gruppe für Event." + "    (" + msg + ")", HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+
+    public GroupIdMismatchException() {
+        super("", HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+}

src/main/java/mops/gruppen2/domain/Exceptions/GroupNotFoundException.java

@@ -0,0 +1,13 @@
+package mops.gruppen2.domain.Exceptions;
+
+import org.springframework.http.HttpStatus;
+
+public class GroupNotFoundException extends EventException {
+    public GroupNotFoundException(String msg) {
+        super(msg, HttpStatus.NOT_FOUND);
+    }
+
+    public GroupNotFoundException() {
+        super("Gruppe nicht gefunden.", HttpStatus.NOT_FOUND);
+    }
+}

src/main/java/mops/gruppen2/domain/Exceptions/UserAlreadyExistsException.java

@@ -1,7 +1,13 @@
 package mops.gruppen2.domain.Exceptions;
 
+import org.springframework.http.HttpStatus;
+
 public class UserAlreadyExistsException extends EventException {
-   public UserAlreadyExistsException(String msg){
-       super(msg);
+    public UserAlreadyExistsException(String msg) {
+        super(msg, HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+
+    public UserAlreadyExistsException() {
+        super("Der User existiert bereits.", HttpStatus.INTERNAL_SERVER_ERROR);
     }
 }

src/main/java/mops/gruppen2/domain/Exceptions/UserNotFoundException.java

@@ -1,7 +1,13 @@
 package mops.gruppen2.domain.Exceptions;
 
-public class UserNotFoundException extends EventException{
-    public  UserNotFoundException(String msg){
-        super(msg);
+import org.springframework.http.HttpStatus;
+
+public class UserNotFoundException extends EventException {
+    public UserNotFoundException(String msg) {
+        super(msg, HttpStatus.NOT_FOUND);
+    }
+
+    public UserNotFoundException() {
+        super("Der User wurde nicht gefunden.", HttpStatus.NOT_FOUND);
     }
 }

src/main/java/mops/gruppen2/domain/ProductSwaggerExample.java

@@ -1,12 +0,0 @@
-package mops.gruppen2.domain;
-
-import lombok.Value;
-
-// @ApiModelProperty
-@Value
-public class ProductSwaggerExample {
-
-    // @ApiModelProperty
-    String name;
-    String description;
-}

src/main/java/mops/gruppen2/domain/event/AddUserEvent.java

@@ -27,11 +27,12 @@ public class AddUserEvent extends Event {
         this.email = email;
     }
 
-    public void apply(Group group) throws EventException{
+    @Override
+    public void applyEvent(Group group) throws EventException {
         User user = new User(this.user_id, this.givenname, this.familyname, this.email);
 
-        if (group.getMembers().contains(user)){
-            throw new UserAlreadyExistsException("Der User existiert bereits");
+        if (group.getMembers().contains(user)) {
+            throw new UserAlreadyExistsException();
         }
 
         group.getMembers().add(user);

src/main/java/mops/gruppen2/domain/event/CreateGroupEvent.java

@@ -15,8 +15,6 @@ public class CreateGroupEvent extends Event {
     private Long groupParent;
     private GroupType groupType;
 
-
-
     public CreateGroupEvent(Long group_id, String user_id, Long parent, GroupType type, Visibility visibility) {
         super(group_id, user_id);
         this.groupParent = parent;
@@ -24,7 +22,8 @@ public class CreateGroupEvent extends Event {
         this.groupVisibility = visibility;
     }
 
-    public void apply(Group group) {
+    @Override
+    public void applyEvent(Group group) {
         group.setId(this.group_id);
         group.setParent(this.groupParent);
         group.setType(this.groupType);

src/main/java/mops/gruppen2/domain/event/DeleteGroupEvent.java

@@ -13,7 +13,7 @@ public class DeleteGroupEvent extends Event {
     }
 
     @Override
-    public void apply(Group group) {
+    public void applyEvent(Group group) {
         group.getRoles().clear();
         group.getMembers().clear();
         group.setTitle(null);

src/main/java/mops/gruppen2/domain/event/DeleteUserEvent.java

@@ -1,11 +1,11 @@
 package mops.gruppen2.domain.event;
 
-import lombok.*;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 import mops.gruppen2.domain.Exceptions.EventException;
 import mops.gruppen2.domain.Exceptions.UserNotFoundException;
 import mops.gruppen2.domain.Group;
 import mops.gruppen2.domain.User;
-import mops.gruppen2.domain.Group;
 
 /**
  * Entfernt ein einzelnes Mitglied einer Gruppe.
@@ -17,7 +17,8 @@ public class DeleteUserEvent extends Event {
         super(group_id, user_id);
     }
 
-    public void apply(Group group) throws EventException {
+    @Override
+    public void applyEvent(Group group) throws EventException {
         for (User user : group.getMembers()) {
             if (user.getUser_id().equals(this.user_id)) {
                 group.getMembers().remove(user);

src/main/java/mops/gruppen2/domain/event/Event.java

@@ -31,7 +31,22 @@ public class Event {
     Long group_id;
     String user_id;
 
-
     public void apply(Group group) throws EventException {
+        checkGroupIdMatch(group.getId());
+        applyEvent(group);
+    }
+
+    protected void applyEvent(Group group) throws EventException {
+
+    }
+
+    private void checkGroupIdMatch(Long group_id) {
+        if (this.group_id.equals(group_id)) {
+            return;
+        }
+
+        //throw new GroupIdMismatchException(this.getClass().toString());
+        System.out.println(group_id);
+        System.out.println(this.group_id);
     }
 }

src/main/java/mops/gruppen2/domain/event/UpdateGroupDescriptionEvent.java

@@ -19,7 +19,8 @@ public class UpdateGroupDescriptionEvent extends Event {
         this.newGroupDescription = newGroupDescription;
     }
 
-    public void apply(Group group) {
+    @Override
+    public void applyEvent(Group group) {
         group.setDescription(this.newGroupDescription);
     }
 }

src/main/java/mops/gruppen2/domain/event/UpdateGroupTitleEvent.java

@@ -19,7 +19,8 @@ public class UpdateGroupTitleEvent extends Event {
         this.newGroupTitle = newGroupTitle;
     }
 
-    public void apply(Group group) {
+    @Override
+    public void applyEvent(Group group) {
         group.setTitle(this.newGroupTitle);
     }
 

src/main/java/mops/gruppen2/domain/event/UpdateRoleEvent.java

@@ -1,13 +1,11 @@
 package mops.gruppen2.domain.event;
 
-import lombok.*;
-import mops.gruppen2.domain.Exceptions.EventException;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 import mops.gruppen2.domain.Exceptions.UserNotFoundException;
 import mops.gruppen2.domain.Group;
 import mops.gruppen2.domain.Role;
-import mops.gruppen2.domain.User;
-
-import java.util.Optional;
 
 /**
  * Aktualisiert die Gruppenrolle eines Teilnehmers.
@@ -18,15 +16,16 @@ import java.util.Optional;
 public class UpdateRoleEvent extends Event {
 
     Role newRole;
-  
+
     public UpdateRoleEvent(Long group_id, String user_id, Role newRole) {
         super(group_id, user_id);
         this.newRole = newRole;
     }
 
-    public void apply(Group group) throws UserNotFoundException{
-        if (!group.getRoles().containsKey(user_id)){
-            throw new UserNotFoundException("Der User wurde nicht gefunden");
+    @Override
+    public void applyEvent(Group group) throws UserNotFoundException {
+        if (!group.getRoles().containsKey(user_id)) {
+            throw new UserNotFoundException();
         }
         group.getRoles().put(this.user_id, this.newRole);
     }

src/main/java/mops/gruppen2/security/SecurityConfig.java

@@ -6,11 +6,7 @@ import org.keycloak.adapters.springsecurity.authentication.KeycloakAuthenticatio
 import org.keycloak.adapters.springsecurity.config.KeycloakWebSecurityConfigurerAdapter;
 import org.keycloak.representations.AccessToken;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.ComponentScan;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.context.annotation.Scope;
-import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.context.annotation.*;
 import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
 import org.springframework.security.config.annotation.method.configuration.GlobalMethodSecurityConfiguration;

src/main/java/mops/gruppen2/service/UserService.java

@@ -1,6 +1,7 @@
 package mops.gruppen2.service;
 
 import mops.gruppen2.domain.Exceptions.EventException;
+import mops.gruppen2.domain.Exceptions.GroupNotFoundException;
 import mops.gruppen2.domain.Group;
 import mops.gruppen2.domain.User;
 import mops.gruppen2.domain.event.Event;
@@ -39,7 +40,12 @@ public class UserService {
     public Group getGroupById(Long group_id) throws EventException {
         List<Long> group_ids = new ArrayList<>();
         group_ids.add(group_id);
-        List<Event> events = groupService.getGroupEvents(group_ids);
-        return groupService.projectEventList(events).get(0);
+
+        try {
+            List<Event> events = groupService.getGroupEvents(group_ids);
+            return groupService.projectEventList(events).get(0);
+        } catch (IndexOutOfBoundsException e) {
+            throw new GroupNotFoundException("Gruppe nicht gefunden");
+        }
     }
 }