Merge pull request 'issue-6' (#8) from issue-6 into master

Reviewed-on: Sebastian/TimeManager#8

README.md

@@ -1,2 +1,12 @@
 # TimeManager
+Template für einen Spring-Angular-Service
 
+## Generate Angular Client Code with OpenAPI Generator
+1. Install the latest version of "openapi-generator-cli"
+```bash
+npm install @openapitools/openapi-generator-cli -g
+```
+2. Generate Code
+```bash
+npx @openapitools/openapi-generator-cli generate -i openapi.yaml -g typescript-angular -o frontend/src/api/
+```

backend/src/main/java/core/api/controller/TaskgroupController.java

@@ -0,0 +1,81 @@
+package core.api.controller;
+
+import core.api.models.auth.SimpleStatusResponse;
+import core.api.models.timemanager.taskgroup.TaskgroupEntityInfo;
+import core.api.models.timemanager.taskgroup.TaskgroupFieldInfo;
+import core.entities.timemanager.Taskgroup;
+import core.services.PermissionResult;
+import core.services.ServiceExitCode;
+import core.services.ServiceResult;
+import core.services.TaskgroupService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import java.util.List;
+
+@CrossOrigin(origins = "*", maxAge = 3600)
+@RestController
+@RequestMapping("/api")
+public class TaskgroupController {
+
+    private final TaskgroupService taskgroupService;
+
+    public TaskgroupController(@Autowired TaskgroupService taskgroupService) {
+        this.taskgroupService = taskgroupService;
+    }
+
+    @PutMapping("/taskgroups")
+    public ResponseEntity<?> createTaskgroup(@Valid @RequestBody TaskgroupFieldInfo fieldInfo) {
+        String username = SecurityContextHolder.getContext().getAuthentication().getName();
+        ServiceResult<Taskgroup> creationResult = taskgroupService.addTaskgroup(fieldInfo, username);
+        if(creationResult.getExitCode() == ServiceExitCode.OK) {
+            return ResponseEntity.ok(new TaskgroupEntityInfo(creationResult.getResult()));
+        } else {
+            return ResponseEntity.status(409).body(new SimpleStatusResponse("failed"));
+        }
+    }
+
+    @PostMapping("/taskgroups/{taskgroupID}")
+    public ResponseEntity<?> editTaskgroup(@PathVariable long taskgroupID, @Valid @RequestBody TaskgroupFieldInfo taskgroupFieldInfo) {
+        PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
+        if(!taskgroupPermissionResult.isHasPermissions()) {
+           return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
+        }
+
+        if(taskgroupPermissionResult.getExitCode() == ServiceExitCode.MISSING_ENTITY) {
+            return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
+        }
+
+        ServiceExitCode serviceExitCode = taskgroupService.editTaskgroup(taskgroupPermissionResult.getResult(), taskgroupFieldInfo);
+        if(serviceExitCode == ServiceExitCode.OK) {
+            return ResponseEntity.ok(new SimpleStatusResponse("success"));
+        } else {
+            return ResponseEntity.status(409).body(new SimpleStatusResponse("failed"));
+        }
+    }
+
+    @DeleteMapping("/taskgroups/{taskgroupID}")
+    public ResponseEntity<?> deleteTaskgroup(@PathVariable long taskgroupID) {
+        PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
+        if (!taskgroupPermissionResult.isHasPermissions()) {
+            return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
+        }
+
+        if(taskgroupPermissionResult.getExitCode() == ServiceExitCode.MISSING_ENTITY) {
+            return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
+        }
+
+        taskgroupService.deleteTaskgroup(taskgroupPermissionResult.getResult());
+        return ResponseEntity.ok(new SimpleStatusResponse("success"));
+    }
+
+    @GetMapping("/taskgroups")
+    public ResponseEntity<List<TaskgroupEntityInfo>> listTaskgroupsOfUser() {
+        List<Taskgroup> taskgroups = taskgroupService.getTaskgroupsByUser(SecurityContextHolder.getContext().getAuthentication().getName());
+        List<TaskgroupEntityInfo> taskgroupEntityInfos = taskgroups.stream().map(TaskgroupEntityInfo::new).toList();
+        return ResponseEntity.ok(taskgroupEntityInfos);
+    }
+}

backend/src/main/java/core/api/models/timemanager/taskgroup/TaskgroupEntityInfo.java

@@ -0,0 +1,30 @@
+package core.api.models.timemanager.taskgroup;
+
+import core.entities.timemanager.Taskgroup;
+
+public class TaskgroupEntityInfo {
+
+    private long taskgroupID;
+    private String taskgroupName;
+
+    public TaskgroupEntityInfo(Taskgroup taskgroup) {
+        this.taskgroupID = taskgroup.getTaskgroupID();
+        this.taskgroupName = taskgroup.getTaskgroupName();
+    }
+
+    public long getTaskgroupID() {
+        return taskgroupID;
+    }
+
+    public void setTaskgroupID(long taskgroupID) {
+        this.taskgroupID = taskgroupID;
+    }
+
+    public String getTaskgroupName() {
+        return taskgroupName;
+    }
+
+    public void setTaskgroupName(String taskgroupName) {
+        this.taskgroupName = taskgroupName;
+    }
+}

backend/src/main/java/core/api/models/timemanager/taskgroup/TaskgroupFieldInfo.java

@@ -0,0 +1,23 @@
+package core.api.models.timemanager.taskgroup;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import org.hibernate.validator.constraints.Length;
+
+import javax.validation.constraints.Max;
+import javax.validation.constraints.NotBlank;
+
+public class TaskgroupFieldInfo {
+
+    @JsonProperty
+    @NotBlank
+    @Length(max = 255)
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

backend/src/main/java/core/entities/timemanager/Taskgroup.java

@@ -0,0 +1,55 @@
+package core.entities.timemanager;
+
+import core.entities.User;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotBlank;
+
+@Entity
+@Table(name= "taskgroups")
+public class Taskgroup {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long taskgroupID;
+
+    @NotBlank
+    @Column(name = "name", length = 255)
+    private String taskgroupName;
+
+    @OneToOne
+    @JoinColumn(name = "taskgroupuser", nullable = false)
+    private User user;
+
+    public Taskgroup(String taskgroupName, User user) {
+        this.taskgroupName = taskgroupName;
+        this.user = user;
+    }
+
+    public Taskgroup() {
+    }
+
+    public long getTaskgroupID() {
+        return taskgroupID;
+    }
+
+    public void setTaskgroupID(long taskgroupID) {
+        this.taskgroupID = taskgroupID;
+    }
+
+    public String getTaskgroupName() {
+        return taskgroupName;
+    }
+
+    public void setTaskgroupName(String taskgroupName) {
+        this.taskgroupName = taskgroupName;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+}

backend/src/main/java/core/repositories/timemanager/TaskgroupRepository.java

@@ -0,0 +1,24 @@
+package core.repositories.timemanager;
+
+import core.entities.User;
+import core.entities.timemanager.Taskgroup;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+import javax.transaction.Transactional;
+import java.util.List;
+
+@Repository
+public interface TaskgroupRepository extends CrudRepository<Taskgroup, Long> {
+
+    boolean existsByTaskgroupNameAndUser(String name, User user);
+
+    @Query("SELECT tg FROM Taskgroup tg WHERE tg.user.username = ?1")
+    List<Taskgroup> findAllByUser(String username);
+
+    @Modifying
+    @Transactional
+    void deleteAllByUser(User user);
+}

backend/src/main/java/core/services/InvalidConfigurationException.java

@@ -1,2 +0,0 @@
-package core.services;public class InvalidConfigurationException {
-}

backend/src/main/java/core/services/PermissionResult.java

@@ -0,0 +1,40 @@
+package core.services;
+
+public class PermissionResult <T> extends ServiceResult<T> {
+
+    private boolean hasPermissions;
+    public PermissionResult(ServiceExitCode exitCode, T result) {
+        super(exitCode, result);
+    }
+
+    public PermissionResult(T result) {
+        super(result);
+    }
+
+    public PermissionResult(ServiceExitCode exitCode) {
+        super(exitCode);
+    }
+
+    public PermissionResult(ServiceExitCode exitCode, T result, boolean hasPermissions) {
+        super(exitCode, result);
+        this.hasPermissions = hasPermissions;
+    }
+
+    public PermissionResult(T result, boolean hasPermissions) {
+        super(result);
+        this.hasPermissions = hasPermissions;
+    }
+
+    public PermissionResult(ServiceExitCode exitCode, boolean hasPermissions) {
+        super(exitCode);
+        this.hasPermissions = hasPermissions;
+    }
+
+    public boolean isHasPermissions() {
+        return hasPermissions;
+    }
+
+    public void setHasPermissions(boolean hasPermissions) {
+        this.hasPermissions = hasPermissions;
+    }
+}

backend/src/main/java/core/services/PropertyService.java

@@ -1,14 +1,54 @@
 package core.services;
 
 import core.api.models.properties.PropertyInfo;
+import core.entities.PropertiesEntity;
 import core.repositories.PropertyRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.parsing.PropertyEntry;
 import org.springframework.stereotype.Service;
 
 import java.util.Optional;
 
-
+@Service
 public class PropertyService {
 
-    
+    @Autowired
+    private PropertyRepository propertyRepository;
+
+
+
+    public void init() {
+        PropertiesEntity registrationEntity = new PropertiesEntity(PropertyName.REGISTRATION_PROPERTY_NAME.name(), true);
+        if(!propertyRepository.existsByName(registrationEntity.getName())) {
+            propertyRepository.save(registrationEntity);
+        }
+    }
+
+    public Optional<PropertyInfo> getProperty(PropertyName propertyName) {
+        Optional<PropertiesEntity> property = propertyRepository.findByName(propertyName.name());
+        return property.map(PropertyInfo::new);
+    }
+
+    public Optional<PropertiesEntity> getPropertyEntityByName(String name) {
+        return propertyRepository.findByName(name);
+    }
+
+    public boolean isPropertyEnabled(PropertyName propertyName) {
+        Optional<PropertiesEntity> property = propertyRepository.findByName(propertyName.name());
+        return property.map(PropertiesEntity::isStatus).orElseGet(() -> getDefaultBehaivior(propertyName));
+    }
+
+    public boolean getDefaultBehaivior(PropertyName propertyName) {
+        return switch (propertyName) {
+            case REGISTRATION_PROPERTY_NAME -> true;
+        };
+    }
+
+    public void savePropertyEntity(PropertiesEntity property) {
+        propertyRepository.save(property);
+    }
+
+    public enum PropertyName {
+        REGISTRATION_PROPERTY_NAME
+    }
 }

backend/src/main/java/core/services/ServiceExitCode.java

@@ -0,0 +1,8 @@
+package core.services;
+
+public enum ServiceExitCode {
+
+    OK,
+    ENTITY_ALREADY_EXIST,
+    MISSING_ENTITY;
+}

backend/src/main/java/core/services/ServiceResult.java

@@ -0,0 +1,37 @@
+package core.services;
+
+public class ServiceResult <T> {
+
+    private ServiceExitCode exitCode;
+    private T result;
+
+    public ServiceResult(ServiceExitCode exitCode, T result) {
+        this.exitCode = exitCode;
+        this.result = result;
+    }
+
+    public ServiceResult(T result) {
+        this.result = result;
+        this.exitCode = ServiceExitCode.OK;
+    }
+
+    public ServiceResult(ServiceExitCode exitCode) {
+        this.exitCode = exitCode;
+    }
+
+    public ServiceExitCode getExitCode() {
+        return exitCode;
+    }
+
+    public void setExitCode(ServiceExitCode exitCode) {
+        this.exitCode = exitCode;
+    }
+
+    public T getResult() {
+        return result;
+    }
+
+    public void setResult(T result) {
+        this.result = result;
+    }
+}

backend/src/main/java/core/services/TaskgroupService.java

@@ -0,0 +1,78 @@
+package core.services;
+
+import core.api.models.timemanager.taskgroup.TaskgroupEntityInfo;
+import core.api.models.timemanager.taskgroup.TaskgroupFieldInfo;
+import core.entities.User;
+import core.entities.UserRole;
+import core.entities.timemanager.Taskgroup;
+import core.repositories.UserRepository;
+import core.repositories.timemanager.TaskgroupRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.config.Task;
+import org.springframework.security.core.parameters.P;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.Optional;
+
+@Service
+public class TaskgroupService {
+
+    private final TaskgroupRepository taskgroupRepository;
+    private final UserRepository userRepository;
+    public TaskgroupService(@Autowired  TaskgroupRepository taskgroupRepository,
+                            @Autowired UserRepository userRepository) {
+        this.taskgroupRepository = taskgroupRepository;
+        this.userRepository = userRepository;
+    }
+
+    public PermissionResult<Taskgroup> getTaskgroupByIDAndUsername(long taskgroupID, String username) {
+        Optional<Taskgroup> taskgroup = taskgroupRepository.findById(taskgroupID);
+        return taskgroup.map(value -> new PermissionResult<>(value, value.getUser().getUsername().equals(username))).orElseGet(() ->
+                new PermissionResult<>(ServiceExitCode.MISSING_ENTITY));
+    }
+
+    public ServiceResult<Taskgroup> addTaskgroup(TaskgroupFieldInfo taskData, String username) {
+        Optional<User> user = userRepository.findByUsername(username);
+        if(user.isEmpty()) {
+            throw new NoSuchElementException();
+        }
+
+        if(!taskgroupRepository.existsByTaskgroupNameAndUser(taskData.getName(), user.get())) {
+
+            Taskgroup taskgroup = new Taskgroup(taskData.getName(), user.get());
+            taskgroupRepository.save(taskgroup);
+            return new ServiceResult<>(taskgroup);
+        } else {
+            return new ServiceResult<>(ServiceExitCode.ENTITY_ALREADY_EXIST);
+        }
+    }
+
+    public ServiceExitCode editTaskgroup(Taskgroup taskgroup, TaskgroupFieldInfo taskgroupFieldInfo) {
+        if(!taskgroup.getTaskgroupName().equals(taskgroupFieldInfo.getName())) {
+            //Check if another taskgroup with the new name is already existent for the user of the taskgroup
+            if(!taskgroupRepository.existsByTaskgroupNameAndUser(taskgroupFieldInfo.getName(), taskgroup.getUser())) {
+                taskgroup.setTaskgroupName(taskgroupFieldInfo.getName());
+                taskgroupRepository.save(taskgroup);
+                return ServiceExitCode.OK;
+            } else {
+                return ServiceExitCode.ENTITY_ALREADY_EXIST;
+            }
+        } else {
+            return ServiceExitCode.OK;
+        }
+    }
+
+    public void deleteTaskgroup(Taskgroup taskgroup) {
+        taskgroupRepository.delete(taskgroup);
+    }
+
+    public List<Taskgroup> getTaskgroupsByUser(String username) {
+        return taskgroupRepository.findAllByUser(username);
+    }
+
+    public void deleteTaskgroupByUser(User user) {
+        taskgroupRepository.deleteAllByUser(user);
+    }
+}

backend/src/main/java/core/services/UserService.java

@@ -9,6 +9,7 @@ import core.api.models.users.UserUpdateInfo;
 import core.entities.RoleEntity;
 import core.entities.User;
 import core.entities.UserRole;
+import core.entities.timemanager.Taskgroup;
 import core.repositories.RoleRepository;
 import core.repositories.UserRepository;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -29,6 +30,7 @@ public class UserService {
 
     @Autowired
     private RoleRepository roleRepository;
+    @Autowired private TaskgroupService taskgroupService;
 
     public List<UserInfo> getAllUserInfos() {
         Iterable<User> users = userRepository.findAll();
@@ -146,6 +148,7 @@ public class UserService {
             return 2;
         }
 
+        taskgroupService.deleteTaskgroupByUser(requestedUser.get());
         userRepository.deleteByUsername(username);
         return 0;
     }

frontend/src/api/.openapi-generator/FILES

@@ -5,6 +5,7 @@ api/account.service.ts
 api/api.ts
 api/login.service.ts
 api/properties.service.ts
+api/taskgroup.service.ts
 api/users.service.ts
 configuration.ts
 encoder.ts
@@ -24,6 +25,8 @@ model/propertiesInfo.ts
 model/propertyInfo.ts
 model/propertyUpdateRequest.ts
 model/signUpRequest.ts
+model/taskgroupEntityInfo.ts
+model/taskgroupFieldInfo.ts
 model/userAddInfo.ts
 model/userInfo.ts
 model/userUpdateInfo.ts

frontend/src/api/api.module.ts

@@ -5,6 +5,7 @@ import { HttpClient } from '@angular/common/http';
 import { AccountService } from './api/account.service';
 import { LoginService } from './api/login.service';
 import { PropertiesService } from './api/properties.service';
+import { TaskgroupService } from './api/taskgroup.service';
 import { UsersService } from './api/users.service';
 
 @NgModule({

frontend/src/api/api/api.ts

@@ -4,6 +4,8 @@ export * from './login.service';
 import { LoginService } from './login.service';
 export * from './properties.service';
 import { PropertiesService } from './properties.service';
+export * from './taskgroup.service';
+import { TaskgroupService } from './taskgroup.service';
 export * from './users.service';
 import { UsersService } from './users.service';
-export const APIS = [AccountService, LoginService, PropertiesService, UsersService];
+export const APIS = [AccountService, LoginService, PropertiesService, TaskgroupService, UsersService];

frontend/src/api/api/taskgroup.service.ts

@@ -0,0 +1,341 @@
+/**
+ * API Title
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 1.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+/* tslint:disable:no-unused-variable member-ordering */
+
+import { Inject, Injectable, Optional }                      from '@angular/core';
+import { HttpClient, HttpHeaders, HttpParams,
+         HttpResponse, HttpEvent, HttpParameterCodec, HttpContext 
+        }       from '@angular/common/http';
+import { CustomHttpParameterCodec }                          from '../encoder';
+import { Observable }                                        from 'rxjs';
+
+import { InlineResponse200 } from '../model/models';
+import { InlineResponse403 } from '../model/models';
+import { TaskgroupEntityInfo } from '../model/models';
+import { TaskgroupFieldInfo } from '../model/models';
+
+import { BASE_PATH, COLLECTION_FORMATS }                     from '../variables';
+import { Configuration }                                     from '../configuration';
+
+
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TaskgroupService {
+
+    protected basePath = 'http://localhost:8080/api';
+    public defaultHeaders = new HttpHeaders();
+    public configuration = new Configuration();
+    public encoder: HttpParameterCodec;
+
+    constructor(protected httpClient: HttpClient, @Optional()@Inject(BASE_PATH) basePath: string, @Optional() configuration: Configuration) {
+        if (configuration) {
+            this.configuration = configuration;
+        }
+        if (typeof this.configuration.basePath !== 'string') {
+            if (typeof basePath !== 'string') {
+                basePath = this.basePath;
+            }
+            this.configuration.basePath = basePath;
+        }
+        this.encoder = this.configuration.encoder || new CustomHttpParameterCodec();
+    }
+
+
+    private addToHttpParams(httpParams: HttpParams, value: any, key?: string): HttpParams {
+        if (typeof value === "object" && value instanceof Date === false) {
+            httpParams = this.addToHttpParamsRecursive(httpParams, value);
+        } else {
+            httpParams = this.addToHttpParamsRecursive(httpParams, value, key);
+        }
+        return httpParams;
+    }
+
+    private addToHttpParamsRecursive(httpParams: HttpParams, value?: any, key?: string): HttpParams {
+        if (value == null) {
+            return httpParams;
+        }
+
+        if (typeof value === "object") {
+            if (Array.isArray(value)) {
+                (value as any[]).forEach( elem => httpParams = this.addToHttpParamsRecursive(httpParams, elem, key));
+            } else if (value instanceof Date) {
+                if (key != null) {
+                    httpParams = httpParams.append(key,
+                        (value as Date).toISOString().substr(0, 10));
+                } else {
+                   throw Error("key may not be null if value is Date");
+                }
+            } else {
+                Object.keys(value).forEach( k => httpParams = this.addToHttpParamsRecursive(
+                    httpParams, value[k], key != null ? `${key}.${k}` : k));
+            }
+        } else if (key != null) {
+            httpParams = httpParams.append(key, value);
+        } else {
+            throw Error("key may not be null if value is not object or array");
+        }
+        return httpParams;
+    }
+
+    /**
+     * list all taskgroups of authorized user
+     * list all taskgroups of authorized user
+     * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
+     * @param reportProgress flag to report request and response progress.
+     */
+    public taskgroupsGet(observe?: 'body', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<Array<TaskgroupEntityInfo>>;
+    public taskgroupsGet(observe?: 'response', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpResponse<Array<TaskgroupEntityInfo>>>;
+    public taskgroupsGet(observe?: 'events', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpEvent<Array<TaskgroupEntityInfo>>>;
+    public taskgroupsGet(observe: any = 'body', reportProgress: boolean = false, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<any> {
+
+        let localVarHeaders = this.defaultHeaders;
+
+        let localVarCredential: string | undefined;
+        // authentication (API_TOKEN) required
+        localVarCredential = this.configuration.lookupCredential('API_TOKEN');
+        if (localVarCredential) {
+            localVarHeaders = localVarHeaders.set('Authorization', 'Bearer ' + localVarCredential);
+        }
+
+        let localVarHttpHeaderAcceptSelected: string | undefined = options && options.httpHeaderAccept;
+        if (localVarHttpHeaderAcceptSelected === undefined) {
+            // to determine the Accept header
+            const httpHeaderAccepts: string[] = [
+                'application/json'
+            ];
+            localVarHttpHeaderAcceptSelected = this.configuration.selectHeaderAccept(httpHeaderAccepts);
+        }
+        if (localVarHttpHeaderAcceptSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Accept', localVarHttpHeaderAcceptSelected);
+        }
+
+        let localVarHttpContext: HttpContext | undefined = options && options.context;
+        if (localVarHttpContext === undefined) {
+            localVarHttpContext = new HttpContext();
+        }
+
+
+        let responseType_: 'text' | 'json' = 'json';
+        if(localVarHttpHeaderAcceptSelected && localVarHttpHeaderAcceptSelected.startsWith('text')) {
+            responseType_ = 'text';
+        }
+
+        return this.httpClient.get<Array<TaskgroupEntityInfo>>(`${this.configuration.basePath}/taskgroups`,
+            {
+                context: localVarHttpContext,
+                responseType: <any>responseType_,
+                withCredentials: this.configuration.withCredentials,
+                headers: localVarHeaders,
+                observe: observe,
+                reportProgress: reportProgress
+            }
+        );
+    }
+
+    /**
+     * creates taskgroup
+     * creates taskgroup
+     * @param taskgroupFieldInfo 
+     * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
+     * @param reportProgress flag to report request and response progress.
+     */
+    public taskgroupsPut(taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'body', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<TaskgroupEntityInfo>;
+    public taskgroupsPut(taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'response', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpResponse<TaskgroupEntityInfo>>;
+    public taskgroupsPut(taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'events', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpEvent<TaskgroupEntityInfo>>;
+    public taskgroupsPut(taskgroupFieldInfo?: TaskgroupFieldInfo, observe: any = 'body', reportProgress: boolean = false, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<any> {
+
+        let localVarHeaders = this.defaultHeaders;
+
+        let localVarCredential: string | undefined;
+        // authentication (API_TOKEN) required
+        localVarCredential = this.configuration.lookupCredential('API_TOKEN');
+        if (localVarCredential) {
+            localVarHeaders = localVarHeaders.set('Authorization', 'Bearer ' + localVarCredential);
+        }
+
+        let localVarHttpHeaderAcceptSelected: string | undefined = options && options.httpHeaderAccept;
+        if (localVarHttpHeaderAcceptSelected === undefined) {
+            // to determine the Accept header
+            const httpHeaderAccepts: string[] = [
+                'application/json'
+            ];
+            localVarHttpHeaderAcceptSelected = this.configuration.selectHeaderAccept(httpHeaderAccepts);
+        }
+        if (localVarHttpHeaderAcceptSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Accept', localVarHttpHeaderAcceptSelected);
+        }
+
+        let localVarHttpContext: HttpContext | undefined = options && options.context;
+        if (localVarHttpContext === undefined) {
+            localVarHttpContext = new HttpContext();
+        }
+
+
+        // to determine the Content-Type header
+        const consumes: string[] = [
+            'application/json'
+        ];
+        const httpContentTypeSelected: string | undefined = this.configuration.selectHeaderContentType(consumes);
+        if (httpContentTypeSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Content-Type', httpContentTypeSelected);
+        }
+
+        let responseType_: 'text' | 'json' = 'json';
+        if(localVarHttpHeaderAcceptSelected && localVarHttpHeaderAcceptSelected.startsWith('text')) {
+            responseType_ = 'text';
+        }
+
+        return this.httpClient.put<TaskgroupEntityInfo>(`${this.configuration.basePath}/taskgroups`,
+            taskgroupFieldInfo,
+            {
+                context: localVarHttpContext,
+                responseType: <any>responseType_,
+                withCredentials: this.configuration.withCredentials,
+                headers: localVarHeaders,
+                observe: observe,
+                reportProgress: reportProgress
+            }
+        );
+    }
+
+    /**
+     * deletes taskgroup
+     * deletes taskgroup
+     * @param taskgroupID internal id of taskgroup
+     * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
+     * @param reportProgress flag to report request and response progress.
+     */
+    public taskgroupsTaskgroupIDDelete(taskgroupID: number, observe?: 'body', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<InlineResponse200>;
+    public taskgroupsTaskgroupIDDelete(taskgroupID: number, observe?: 'response', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpResponse<InlineResponse200>>;
+    public taskgroupsTaskgroupIDDelete(taskgroupID: number, observe?: 'events', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpEvent<InlineResponse200>>;
+    public taskgroupsTaskgroupIDDelete(taskgroupID: number, observe: any = 'body', reportProgress: boolean = false, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<any> {
+        if (taskgroupID === null || taskgroupID === undefined) {
+            throw new Error('Required parameter taskgroupID was null or undefined when calling taskgroupsTaskgroupIDDelete.');
+        }
+
+        let localVarHeaders = this.defaultHeaders;
+
+        let localVarCredential: string | undefined;
+        // authentication (API_TOKEN) required
+        localVarCredential = this.configuration.lookupCredential('API_TOKEN');
+        if (localVarCredential) {
+            localVarHeaders = localVarHeaders.set('Authorization', 'Bearer ' + localVarCredential);
+        }
+
+        let localVarHttpHeaderAcceptSelected: string | undefined = options && options.httpHeaderAccept;
+        if (localVarHttpHeaderAcceptSelected === undefined) {
+            // to determine the Accept header
+            const httpHeaderAccepts: string[] = [
+                'application/json'
+            ];
+            localVarHttpHeaderAcceptSelected = this.configuration.selectHeaderAccept(httpHeaderAccepts);
+        }
+        if (localVarHttpHeaderAcceptSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Accept', localVarHttpHeaderAcceptSelected);
+        }
+
+        let localVarHttpContext: HttpContext | undefined = options && options.context;
+        if (localVarHttpContext === undefined) {
+            localVarHttpContext = new HttpContext();
+        }
+
+
+        let responseType_: 'text' | 'json' = 'json';
+        if(localVarHttpHeaderAcceptSelected && localVarHttpHeaderAcceptSelected.startsWith('text')) {
+            responseType_ = 'text';
+        }
+
+        return this.httpClient.delete<InlineResponse200>(`${this.configuration.basePath}/taskgroups/${encodeURIComponent(String(taskgroupID))}`,
+            {
+                context: localVarHttpContext,
+                responseType: <any>responseType_,
+                withCredentials: this.configuration.withCredentials,
+                headers: localVarHeaders,
+                observe: observe,
+                reportProgress: reportProgress
+            }
+        );
+    }
+
+    /**
+     * edits taskgroup
+     * edits taskgroup
+     * @param taskgroupID internal id of taskgroup
+     * @param taskgroupFieldInfo 
+     * @param observe set whether or not to return the data Observable as the body, response or events. defaults to returning the body.
+     * @param reportProgress flag to report request and response progress.
+     */
+    public taskgroupsTaskgroupIDPost(taskgroupID: number, taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'body', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<InlineResponse200>;
+    public taskgroupsTaskgroupIDPost(taskgroupID: number, taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'response', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpResponse<InlineResponse200>>;
+    public taskgroupsTaskgroupIDPost(taskgroupID: number, taskgroupFieldInfo?: TaskgroupFieldInfo, observe?: 'events', reportProgress?: boolean, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<HttpEvent<InlineResponse200>>;
+    public taskgroupsTaskgroupIDPost(taskgroupID: number, taskgroupFieldInfo?: TaskgroupFieldInfo, observe: any = 'body', reportProgress: boolean = false, options?: {httpHeaderAccept?: 'application/json', context?: HttpContext}): Observable<any> {
+        if (taskgroupID === null || taskgroupID === undefined) {
+            throw new Error('Required parameter taskgroupID was null or undefined when calling taskgroupsTaskgroupIDPost.');
+        }
+
+        let localVarHeaders = this.defaultHeaders;
+
+        let localVarCredential: string | undefined;
+        // authentication (API_TOKEN) required
+        localVarCredential = this.configuration.lookupCredential('API_TOKEN');
+        if (localVarCredential) {
+            localVarHeaders = localVarHeaders.set('Authorization', 'Bearer ' + localVarCredential);
+        }
+
+        let localVarHttpHeaderAcceptSelected: string | undefined = options && options.httpHeaderAccept;
+        if (localVarHttpHeaderAcceptSelected === undefined) {
+            // to determine the Accept header
+            const httpHeaderAccepts: string[] = [
+                'application/json'
+            ];
+            localVarHttpHeaderAcceptSelected = this.configuration.selectHeaderAccept(httpHeaderAccepts);
+        }
+        if (localVarHttpHeaderAcceptSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Accept', localVarHttpHeaderAcceptSelected);
+        }
+
+        let localVarHttpContext: HttpContext | undefined = options && options.context;
+        if (localVarHttpContext === undefined) {
+            localVarHttpContext = new HttpContext();
+        }
+
+
+        // to determine the Content-Type header
+        const consumes: string[] = [
+            'application/json'
+        ];
+        const httpContentTypeSelected: string | undefined = this.configuration.selectHeaderContentType(consumes);
+        if (httpContentTypeSelected !== undefined) {
+            localVarHeaders = localVarHeaders.set('Content-Type', httpContentTypeSelected);
+        }
+
+        let responseType_: 'text' | 'json' = 'json';
+        if(localVarHttpHeaderAcceptSelected && localVarHttpHeaderAcceptSelected.startsWith('text')) {
+            responseType_ = 'text';
+        }
+
+        return this.httpClient.post<InlineResponse200>(`${this.configuration.basePath}/taskgroups/${encodeURIComponent(String(taskgroupID))}`,
+            taskgroupFieldInfo,
+            {
+                context: localVarHttpContext,
+                responseType: <any>responseType_,
+                withCredentials: this.configuration.withCredentials,
+                headers: localVarHeaders,
+                observe: observe,
+                reportProgress: reportProgress
+            }
+        );
+    }
+
+}

frontend/src/api/model/models.ts

@@ -11,6 +11,8 @@ export * from './propertiesInfo';
 export * from './propertyInfo';
 export * from './propertyUpdateRequest';
 export * from './signUpRequest';
+export * from './taskgroupEntityInfo';
+export * from './taskgroupFieldInfo';
 export * from './userAddInfo';
 export * from './userInfo';
 export * from './userUpdateInfo';

frontend/src/api/model/taskgroupEntityInfo.ts

@@ -0,0 +1,24 @@
+/**
+ * API Title
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 1.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+export interface TaskgroupEntityInfo { 
+    /**
+     * internal id of taskgroup
+     */
+    taskgroupID: number;
+    /**
+     * name of taskgroup
+     */
+    taskgroupName: string;
+}
+

frontend/src/api/model/taskgroupFieldInfo.ts

@@ -0,0 +1,20 @@
+/**
+ * API Title
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 1.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+export interface TaskgroupFieldInfo { 
+    /**
+     * name of taskgroup
+     */
+    name: string;
+}
+

frontend/src/app/app-routing.module.ts

@@ -4,11 +4,13 @@ import {AppComponent} from "./app.component";
 import {AdminDashboardComponent} from "./admin-dashboard/admin-dashboard.component";
 import {MainComponent} from "./main/main.component";
 import {UserSettingsComponent} from "./user-settings/user-settings.component";
+import {TaskgroupDashboardComponent} from "./taskgroups/taskgroup-dashboard/taskgroup-dashboard.component";
 
 const routes: Routes = [
   {path: '', component: MainComponent},
   {path: 'admin', component: AdminDashboardComponent},
-  {path: 'user/settings', component: UserSettingsComponent}
+  {path: 'user/settings', component: UserSettingsComponent},
+  {path: 'taskgroups', component: TaskgroupDashboardComponent}
 ];
 
 @NgModule({

frontend/src/app/app.component.html

@@ -1,5 +1,10 @@
 <mat-toolbar color="primary">
-  <span>Spring Angular Demo</span>
+  <span>TimeManager</span>
+
+  <button mat-button aria-label="Organize" *ngIf="authService.hasKey" [matMenuTriggerFor]="organizeMenu">Organize &#9662;</button>
+  <mat-menu #organizeMenu=matMenu>
+    <button mat-menu-item routerLink="taskgroups/" aria-label="Task groups">Taskgroups</button>
+  </mat-menu>
   <span class="example-spacer"></span>
 
 

frontend/src/app/app.module.ts

@@ -36,6 +36,9 @@ import { DeleteAccountComponent } from './user-settings/account-settings/delete-
 import { RegistrationComponent } from './auth/registration/registration.component';
 import { SettingsComponent } from './admin-dashboard/settings/settings.component';
 import {MatListModule} from "@angular/material/list";
+import { TaskgroupDashboardComponent } from './taskgroups/taskgroup-dashboard/taskgroup-dashboard.component';
+import { TaskgroupCreationComponent } from './taskgroups/taskgroup-creation/taskgroup-creation.component';
+import { TaskgroupDeletionComponent } from './taskgroups/taskgroup-deletion/taskgroup-deletion.component';
 
 @NgModule({
   declarations: [
@@ -52,7 +55,10 @@ import {MatListModule} from "@angular/material/list";
     ManageEmailComponent,
     DeleteAccountComponent,
     RegistrationComponent,
-    SettingsComponent
+    SettingsComponent,
+    TaskgroupDashboardComponent,
+    TaskgroupCreationComponent,
+    TaskgroupDeletionComponent
   ],
   imports: [
     BrowserModule,

frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.css

@@ -0,0 +1,3 @@
+.mat-form-field {
+  width: 100%;
+}

frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.html

@@ -0,0 +1,13 @@
+<h1 mat-dialog-title>Create New Taskgroup</h1>
+<div mat-dialog-content>
+  <mat-form-field appearance="outline">
+    <mat-label>Name</mat-label>
+    <input matInput [formControl]="nameCtrl">
+    <mat-hint align="end">{{nameCtrl.value.length}} / 255</mat-hint>
+  </mat-form-field>
+</div>
+
+<div mat-dialog-actions align="end">
+  <button mat-raised-button (click)="cancel()">Cancel</button>
+  <button mat-raised-button color="primary" (click)="save()" [disabled]="nameCtrl.invalid"><mat-icon>save</mat-icon>Save<mat-icon *ngIf="pending"><mat-spinner diameter="20" style="margin-left: 10px"></mat-spinner></mat-icon></button>
+</div>

frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TaskgroupCreationComponent } from './taskgroup-creation.component';
+
+describe('TaskgroupCreationComponent', () => {
+  let component: TaskgroupCreationComponent;
+  let fixture: ComponentFixture<TaskgroupCreationComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TaskgroupCreationComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TaskgroupCreationComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

frontend/src/app/taskgroups/taskgroup-creation/taskgroup-creation.component.ts

@@ -0,0 +1,76 @@
+import {Component, Inject, OnInit} from '@angular/core';
+import {FormControl, Validators} from "@angular/forms";
+import {MAT_DIALOG_DATA, MatDialogRef} from "@angular/material/dialog";
+import {TaskgroupEntityInfo, TaskgroupService} from "../../../api";
+import {error} from "@angular/compiler/src/util";
+import {MatSnackBar} from "@angular/material/snack-bar";
+
+@Component({
+  selector: 'app-taskgroup-creation',
+  templateUrl: './taskgroup-creation.component.html',
+  styleUrls: ['./taskgroup-creation.component.css']
+})
+export class TaskgroupCreationComponent implements OnInit {
+
+  nameCtrl = new FormControl('', [Validators.required, Validators.maxLength(255)])
+  pending: boolean = false
+
+  constructor(private dialogRef: MatDialogRef<TaskgroupCreationComponent>,
+              private taskgroupService: TaskgroupService,
+              private snackbar: MatSnackBar,
+              @Inject(MAT_DIALOG_DATA) public data: TaskgroupEntityInfo | undefined) { }
+
+  ngOnInit(): void {
+    if(this.data != undefined) {
+      this.nameCtrl.setValue(this.data!.taskgroupName)
+    }
+  }
+
+  cancel() {
+    this.dialogRef.close();
+  }
+
+  save() {
+    this.pending = true;
+    if(this.data == undefined) {
+      this.taskgroupService.taskgroupsPut({
+        name: this.nameCtrl.value
+      }).subscribe({
+        next: resp => {
+          this.pending = false;
+          this.dialogRef.close(resp);
+        },
+        error: err => {
+          this.pending = false;
+          if(err.status == 409) {
+            this.snackbar.open("Taskgroup already exists", "", {duration: 2000});
+          } else {
+            this.snackbar.open("An unexpected error occured", "");
+          }
+        }
+      })
+    } else {
+      this.taskgroupService.taskgroupsTaskgroupIDPost(this.data.taskgroupID, {
+        name: this.nameCtrl.value
+      }).subscribe({
+        next: resp => {
+          this.pending = false;
+          this.data!.taskgroupName = this.nameCtrl.value
+          this.dialogRef.close(true);
+        },
+        error: err => {
+          this.pending = false;
+          if(err.status == 409) {
+            this.snackbar.open("Taskgroup already exists", "", {duration: 2000});
+          } else if(err.status == 403) {
+            this.snackbar.open("No permission", "", {duration: 2000})
+          } else if(err.status == 404) {
+            this.snackbar.open("Not found", "", {duration: 2000});
+          } else {
+            this.snackbar.open("An unexpected error occured", "");
+          }
+        }
+      })
+    }
+  }
+}

frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.css

@@ -0,0 +1,41 @@
+.container {
+  margin: 20px auto;
+  width: 60%;
+}
+
+.spacer {
+  margin-bottom: 2.5%;
+}
+
+
+@media screen and (max-width: 600px) {
+  .container {
+    width: 100%;
+    margin: 20px 10px;
+  }
+}
+
+.navLink {
+  text-decoration: underline;
+  color: black;
+  margin-right: 5px;
+}
+
+.navLink-disabled {
+  text-decoration: none;
+  color: grey;
+
+}
+
+.navLink-bar {
+  margin-bottom: 20px;
+}
+
+#addTaskgroupBtn {
+  margin-top: 20px;
+}
+
+.edit-btn {
+  background-color: #6e6e6e;
+  color: white;
+}

frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.html

@@ -0,0 +1,19 @@
+<div class="container">
+  <mat-card class="navLink-bar">
+    <mat-card-content>
+      <a class="navLink" routerLink="/">Dashboard</a>
+      <a class="navLink-disabled">/ Taskgroups</a>
+    </mat-card-content>
+  </mat-card>
+
+  <mat-card *ngFor="let taskgroup of taskgroups">
+    <mat-card-content>
+      <h1>{{taskgroup.taskgroupName}}</h1>
+      <button mat-raised-button color="primary">Detail</button>
+      <button mat-raised-button class="edit-btn" (click)="openTaskgroupEditor(taskgroup)">Rename</button>
+      <button mat-raised-button color="warn" (click)="openTaskgroupDeletion(taskgroup)">Delete</button>
+    </mat-card-content>
+
+  </mat-card>
+  <button id="addTaskgroupBtn" mat-raised-button color="primary" (click)="openTaskgroupCreation()">Create new Taskgroup</button>
+</div>

frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TaskgroupDashboardComponent } from './taskgroup-dashboard.component';
+
+describe('TaskgroupDashboardComponent', () => {
+  let component: TaskgroupDashboardComponent;
+  let fixture: ComponentFixture<TaskgroupDashboardComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TaskgroupDashboardComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TaskgroupDashboardComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

frontend/src/app/taskgroups/taskgroup-dashboard/taskgroup-dashboard.component.ts

@@ -0,0 +1,53 @@
+import { Component, OnInit } from '@angular/core';
+import {MatDialog} from "@angular/material/dialog";
+import {TaskgroupCreationComponent} from "../taskgroup-creation/taskgroup-creation.component";
+import {TaskgroupEntityInfo, TaskgroupService} from "../../../api";
+import {TaskgroupDeletionComponent} from "../taskgroup-deletion/taskgroup-deletion.component";
+
+@Component({
+  selector: 'app-taskgroup-dashboard',
+  templateUrl: './taskgroup-dashboard.component.html',
+  styleUrls: ['./taskgroup-dashboard.component.css']
+})
+export class TaskgroupDashboardComponent implements OnInit {
+
+  constructor(private dialog: MatDialog,
+              private taskgroupService: TaskgroupService) { }
+
+  taskgroups: TaskgroupEntityInfo[] = []
+
+  ngOnInit(): void {
+    this.taskgroupService.taskgroupsGet().subscribe({
+      next: resp => {
+        this.taskgroups = resp;
+      }
+    })
+  }
+
+  openTaskgroupCreation() {
+    const dialogRef = this.dialog.open(TaskgroupCreationComponent, {minWidth: "400px"})
+    dialogRef.afterClosed().subscribe(res => {
+      if(res != undefined) {
+        this.taskgroups.push(res);
+      }
+    })
+  }
+
+  openTaskgroupEditor(taskgroup: TaskgroupEntityInfo) {
+    const dialogRef = this.dialog.open(TaskgroupCreationComponent, {data: taskgroup, minWidth: "400px"});
+    dialogRef.afterClosed().subscribe(res => {
+      if(res) {
+        const data = this.taskgroups
+      }
+    })
+  }
+
+  openTaskgroupDeletion(taskgroup: TaskgroupEntityInfo) {
+    const dialogRef = this.dialog.open(TaskgroupDeletionComponent, {data: taskgroup, minWidth: "400px"});
+    dialogRef.afterClosed().subscribe(res => {
+      if(res) {
+       this.taskgroups = this.taskgroups.filter(ctg => ctg.taskgroupID != taskgroup.taskgroupID)
+      }
+    })
+  }
+}

frontend/src/app/taskgroups/taskgroup-deletion/taskgroup-deletion.component.html

@@ -0,0 +1,8 @@
+<h1 mat-dialog-title>Delete Taskgroup</h1>
+
+<p>Are you sure, you want to delete your taskgroup {{data.taskgroupName}}? This <b>cannot</b> be <b>undone!</b></p>
+
+<div mat-dialog-actions align="end">
+  <button mat-raised-button (click)="cancel()">Cancel</button>
+  <button mat-raised-button color="warn" (click)="confirm()">Confirm <mat-icon *ngIf="pending"><mat-spinner diameter="20" style="margin-left: 10px"></mat-spinner></mat-icon></button>
+</div>

frontend/src/app/taskgroups/taskgroup-deletion/taskgroup-deletion.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { TaskgroupDeletionComponent } from './taskgroup-deletion.component';
+
+describe('TaskgroupDeletionComponent', () => {
+  let component: TaskgroupDeletionComponent;
+  let fixture: ComponentFixture<TaskgroupDeletionComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ TaskgroupDeletionComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(TaskgroupDeletionComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

frontend/src/app/taskgroups/taskgroup-deletion/taskgroup-deletion.component.ts

@@ -0,0 +1,46 @@
+import {Component, Inject, OnInit} from '@angular/core';
+import {MAT_DIALOG_DATA, MatDialogRef} from "@angular/material/dialog";
+import {TaskgroupEntityInfo, TaskgroupService} from "../../../api";
+import {MatSnackBar} from "@angular/material/snack-bar";
+
+@Component({
+  selector: 'app-taskgroup-deletion',
+  templateUrl: './taskgroup-deletion.component.html',
+  styleUrls: ['./taskgroup-deletion.component.css']
+})
+export class TaskgroupDeletionComponent implements OnInit {
+
+  constructor(@Inject(MAT_DIALOG_DATA) public data: TaskgroupEntityInfo,
+              private dialogRef: MatDialogRef<TaskgroupDeletionComponent>,
+              private taskgroupService: TaskgroupService,
+              private snackbar: MatSnackBar) { }
+
+  pending: boolean = false;
+
+  ngOnInit(): void {
+  }
+
+  cancel() {
+    this.dialogRef.close(false);
+  }
+
+  confirm() {
+    this.pending = true;
+    this.taskgroupService.taskgroupsTaskgroupIDDelete(this.data.taskgroupID).subscribe({
+      next: resp => {
+        this.pending = false;
+        this.dialogRef.close(true);
+      },
+      error: err => {
+        this.pending = false;
+        if(err.stats == 403) {
+          this.snackbar.open("No permission", "", {duration: 2000});
+        } else if(err.status == 404) {
+          this.snackbar.open("Not found", "", {duration: 2000});
+        } else {
+          this.snackbar.open("Unexpected error", "");
+        }
+      }
+    })
+  }
+}

openapi.yaml

@@ -564,6 +564,200 @@ paths:
                     example: "failed"
                     enum:
                       - "failed"
+  /taskgroups:
+    get:
+      security:
+        - API_TOKEN: []
+      tags:
+        - taskgroup
+      summary: list all taskgroups of authorized user
+      description: list all taskgroups of authorized user
+      responses:
+        200: 
+          description: Anfrage erfolgreich
+          content:
+            'application/json':
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/TaskgroupEntityInfo'
+    put:
+      security:
+        - API_TOKEN: []
+      tags:
+        - taskgroup
+      summary: creates taskgroup
+      description: creates taskgroup
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/TaskgroupFieldInfo'
+      responses:
+        200: 
+          description: Anfrage erfolgreich
+          content:
+            'application/json':
+              schema:
+                $ref: '#/components/schemas/TaskgroupEntityInfo'
+        409:
+          description: Taskgroup already exists
+          content:
+            application/json:
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+  /taskgroups/{taskgroupID}:
+    post:
+      security:
+        - API_TOKEN: []
+      tags:
+        - taskgroup
+      summary: edits taskgroup
+      description: edits taskgroup
+      parameters:
+        - name: taskgroupID
+          in: path
+          description: internal id of taskgroup
+          required: true
+          schema:
+            type: number
+            example: 1
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/TaskgroupFieldInfo'
+      responses:
+        200: 
+          description: Anfrage erfolgreich
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "success"
+                    enum:
+                      - "success"
+        403:
+          description: No permission
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+        404:
+          description: Taskgroup does not exist
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+        409:
+          description: Taskgroup with that new name already exists
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+    delete:
+      security:
+        - API_TOKEN: []
+      tags:
+        - taskgroup
+      summary: deletes taskgroup
+      description: deletes taskgroup
+      parameters:
+        - name: taskgroupID
+          in: path
+          description: internal id of taskgroup
+          required: true
+          schema:
+            type: number
+            example: 1
+      responses:
+        200: 
+          description: Anfrage erfolgreich
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "success"
+                    enum:
+                      - "success"
+        403:
+          description: No permission
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
+        404:
+          description: Taskgroup does not exist
+          content:
+            'application/json':
+              schema:
+                type: object
+                required:
+                  - status
+                properties:
+                  status:
+                    type: string
+                    description: Status
+                    example: "failed"
+                    enum:
+                      - "failed"
 components:
   securitySchemes:
    API_TOKEN:
@@ -749,4 +943,31 @@ components:
         settings:
           type: array
           items:
-            $ref: '#/components/schemas/PropertyInfo'
+            $ref: '#/components/schemas/PropertyInfo'
+    TaskgroupEntityInfo:
+      required:
+        - taskgroupID
+        - taskgroupName
+      additionalProperties: false
+      properties:
+        taskgroupID:
+          type: number
+          description: internal id of taskgroup
+          example: 1
+        taskgroupName:
+          type: string
+          description: name of taskgroup
+          example: Taskgroup 1
+          maxLength: 255
+          minLength: 1
+    TaskgroupFieldInfo:
+      required:
+        - name
+      additionalProperties: false
+      properties:
+        name:
+          type: string
+          description: name of taskgroup
+          example: Taskgroup 1
+          maxLength: 255
+          minLength: 1