8 files changed, 688 insertions, 0 deletions
diff --git a/src/app/services/cloudinary.service.ts b/src/app/services/cloudinary.service.ts
new file mode 100644
index 0000000..999e498
--- /dev/null
+++ b/src/app/services/cloudinary.service.ts
@@ -0,0 +1,17 @@
+import {HttpClient} from '@angular/common/http';
+import {Injectable} from '@angular/core';
+import {Observable} from 'rxjs';
+
+@Injectable({
+ providedIn: 'root'
+})
+export class CloudinaryService {
+  constructor(private _http: HttpClient)
+  { }
+
+  getFileRequest(fileLink: string): Observable<Blob> {
+    return this._http.get(fileLink, {
+      responseType: 'blob'
+    });
+  }
+}
diff --git a/src/app/services/comment.service.ts b/src/app/services/comment.service.ts
new file mode 100644
index 0000000..c9dbf35
--- /dev/null
+++ b/src/app/services/comment.service.ts
@@ -0,0 +1,83 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import { Observable } from 'rxjs';
+import { Comment } from 'src/models/comment';
+import { AppConstants } from '../app-constants.module';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class CommentService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  getDefaultComment(): Comment {
+    return new Comment(Guid.createEmpty(), Guid.createEmpty(), 'Gosho', 'Trapov', 'gosho_trapov', 'Your opinion on my idea?', new Date());
+  }
+
+  /* Requests from session storage */
+
+  createCommentWithSessionStorageRequest(postId: Guid, commentMessage: string): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.createCommentRequest(userId, token, postId, commentMessage);
+  }
+
+  putCommentWithSessionStorageRequest(commentId: Guid, postId: Guid, newMessage: string): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putCommentRequest(userId, token, commentId, postId, newMessage);
+  }
+
+  deleteCommentWithSessionStorage(commentId: Guid): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.deleteCommentRequest(commentId, token);
+  }
+
+  /* Comment requests */
+
+  createCommentRequest(userId: Guid, authToken: string, postId: Guid, commentMessage: string): Observable<object> {
+    const body = {
+      postId: postId.toString(),
+      message: commentMessage
+    };
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_COMMENT_URL, body, options);
+  }
+
+  getCommentRequest(id: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', id.toString())
+    };
+    return this._http.get(AppConstants.API_COMMENT_URL, options);
+  }
+
+  putCommentRequest(userId: Guid, authToken: string, commentId: Guid, postId: Guid, newMessage: string): Observable<object> {
+    const body = {
+      commentId: commentId.toString(),
+      postId: postId.toString(),
+      newMessage: newMessage
+    };
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_COMMENT_URL, body, options);
+  }
+
+  deleteCommentRequest(commentId: Guid, authToken: string): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', commentId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.delete(AppConstants.API_COMMENT_URL, options);
+  }
+}
diff --git a/src/app/services/feed.service.ts b/src/app/services/feed.service.ts
new file mode 100644
index 0000000..d160f6d
--- /dev/null
+++ b/src/app/services/feed.service.ts
@@ -0,0 +1,50 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import { Observable } from 'rxjs';
+import { AppConstants } from '../app-constants.module';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class FeedService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  /* Requests from session storage */
+
+  getUserFeedFromSessionStorageRequest(pageNumber: number, firstTimeIssued: string, pageSize: number): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+
+    return this.getUserFeedRequest(userId, token, pageNumber, firstTimeIssued, pageSize);
+  }
+
+  /* Feed requests */
+
+  getUserFeedRequest(userId: Guid, authToken: string, pageNumber: number, firstTimeIssued: string, pageSize: number): Observable<object> {
+    const body = {
+      pageNumber: pageNumber,
+      firstPageTimeIssued: firstTimeIssued,
+      pageSize: pageSize
+    };
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_FEED_URL + '/GetPosts', body, options);
+  }
+
+  getUserPostsRequest(userName: string, pageNumber: number, firstTimeIssued: string, pageSize: number): Observable<object> {
+    const body = {
+      pageNumber: pageNumber,
+      firstPageTimeIssued: firstTimeIssued,
+      pageSize: pageSize
+    };
+    const options = {
+      params: new HttpParams().set('UserName', userName)
+    };
+    return this._http.post(AppConstants.API_FEED_URL + '/GetUserPosts', body, options);
+  }
+}
diff --git a/src/app/services/language.service.ts b/src/app/services/language.service.ts
new file mode 100644
index 0000000..15e241f
--- /dev/null
+++ b/src/app/services/language.service.ts
@@ -0,0 +1,113 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import { Observable } from 'rxjs';
+import { Language } from 'src/models/language';
+import { AppConstants } from '../app-constants.module';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class LanguageService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  /* Requests from session storage */
+
+  createLanguageWithSessionStorageRequest(name: string): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.createLanguageRequest(name, token);
+  }
+
+  getAllLanguagesWithSessionStorageRequest(): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.getAllLanguagesRequest(token);
+  }
+
+  putLanguageWithSessionStorageRequest(langId: Guid, newName: string): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putLanguageRequest(token, langId, newName);
+  }
+
+  deleteLanguageWithSessionStorageRequest(langId: Guid): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.deleteLanguageRequest(token, langId);
+  }
+
+  /* Language requests */
+
+  createLanguageRequest(name: string, authToken: string): Observable<object> {
+    const body = {
+      name: name
+    };
+    const options = {
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_LANGUAGE_URL, body, options);
+  }
+
+  getLanguageRequest(langId: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', langId.toString()),
+    };
+    return this._http.get(AppConstants.API_LANGUAGE_URL, options);
+  }
+
+  getAllLanguagesRequest(authToken: string): Observable<object> {
+    const options = {
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.get(AppConstants.API_LANGUAGE_URL + '/GetLanguages', options);
+  }
+
+  getFullLanguagesFromIncomplete(givenLanguages: Language[]): Promise<Language[]> {
+    if (givenLanguages.length === 0) {
+      return new Promise(resolve => resolve(givenLanguages));
+    }
+
+    // This accepts language array with incomplete languages, meaning
+    // languages that only have an id, but no name
+    return new Promise(resolve => {
+      const lastGuid = givenLanguages[givenLanguages.length - 1].id;
+
+      // For each language, request his name and assign it
+      for (const lang of givenLanguages) {
+        this.getLanguageRequest(lang.id).subscribe(
+          (result: object) => {
+            // this only assigns the "name" property to the language,
+            // because only the name is returned from the request
+            Object.assign(lang, result);
+
+            if (lastGuid === lang.id) {
+              resolve(givenLanguages);
+            }
+          }
+        );
+      }
+    });
+  }
+
+  putLanguageRequest(authToken: string, langId: Guid, newName: string): Observable<object> {
+    const body = {
+      name: newName
+    };
+    const options = {
+      params: new HttpParams().set('Id', langId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_LANGUAGE_URL, body, options);
+  }
+
+  deleteLanguageRequest(authToken: string, langId: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', langId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.delete(AppConstants.API_LANGUAGE_URL, options);
+  }
+}
diff --git a/src/app/services/post.service.ts b/src/app/services/post.service.ts
new file mode 100644
index 0000000..7b2a539
--- /dev/null
+++ b/src/app/services/post.service.ts
@@ -0,0 +1,86 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import * as FormData from 'form-data';
+import { Guid } from 'guid-typescript';
+import { Observable } from 'rxjs';
+import { Post } from 'src/models/post';
+import { AppConstants } from '../app-constants.module';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class PostService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  getDefaultPost(): Post {
+    return new Post(Guid.createEmpty(), 'Gosho', 'Trapov', 'gosho_trapov', 'Your opinion on my idea?', new Date(), [], []);
+  }
+
+  /* Requests from session storage */
+
+  createPostWithSessionStorageRequest(postMessage: string, files: File[]): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.createPostRequest(userId, token, postMessage, files);
+  }
+
+  putPostWithSessionStorageRequest(postId: Guid, newMessage: string, posts: File[]): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putPostRequest(userId, token, postId, newMessage, posts);
+  }
+
+  deletePostWithSessionStorage(postId: Guid): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.deletePostRequest(postId, token);
+  }
+
+  /* Post requests */
+
+  createPostRequest(userId: Guid, authToken: string, postMessage: string, files: File[]): Observable<object> {
+    const form = new FormData();
+    form.append('message', postMessage);
+    for (const file of files) {
+      form.append('files', file, file.name);
+    }
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_POST_URL, form, options);
+  }
+
+  getPostRequest(id: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', id.toString())
+    };
+    return this._http.get(AppConstants.API_POST_URL, options);
+  }
+
+  putPostRequest(userId: Guid, authToken: string, postId: Guid, newMessage: string, files: File[]): Observable<object> {
+    const form = new FormData();
+    form.append('postId', postId);
+    form.append('newMessage', newMessage);
+    for (const file of files) {
+      form.append('files', file, file.name);
+    }
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_POST_URL, form, options);
+  }
+
+  deletePostRequest(postId: Guid, authToken: string): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', postId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.delete(AppConstants.API_POST_URL, options);
+  }
+}
diff --git a/src/app/services/technology.service.ts b/src/app/services/technology.service.ts
new file mode 100644
index 0000000..dbdc039
--- /dev/null
+++ b/src/app/services/technology.service.ts
@@ -0,0 +1,113 @@
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import { Observable } from 'rxjs';
+import { Technology } from 'src/models/technology';
+import { AppConstants } from '../app-constants.module';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TechnologyService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  /* Requests from session storage */
+
+   createTechnologyWithSessionStorageRequest(name: string): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.createtTechnologyRequest(name, token);
+  }
+
+  getAllTechnologiesWithSessionStorageRequest(): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.getAllTechnologiesRequest(token);
+  }
+
+  putTechnologyWithSessionStorageRequest(langId: Guid, newName: string): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putTechnologyRequest(token, langId, newName);
+  }
+
+  deleteTechnologyWithSessionStorageRequest(langId: Guid): Observable<object> {
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.deleteTechnologyRequest(token, langId);
+  }
+
+  /* Technology requests */
+
+  createtTechnologyRequest(name: string, authToken: string): Observable<object> {
+    const body = {
+      name: name
+    };
+    const options = {
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_TECHNOLOGY_URL, body, options);
+  }
+
+  getTechnologyRequest(techId: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', techId.toString())
+    };
+    return this._http.get(AppConstants.API_TECHNOLOGY_URL, options);
+  }
+
+  getAllTechnologiesRequest(authToken: string): Observable<object> {
+    const options = {
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.get(AppConstants.API_TECHNOLOGY_URL + '/GetTechnologies', options);
+  }
+
+  getFullTechnologiesFromIncomplete(givenTechnologies: Technology[]): Promise<Technology[]> {
+    if (givenTechnologies.length === 0) {
+      return new Promise(resolve => resolve(givenTechnologies));
+    }
+
+    // This accepts language array with incomplete languages, meaning
+    // languages that only have an id, but no name
+    return new Promise(resolve => {
+      const lastGuid = givenTechnologies[givenTechnologies.length - 1].id;
+
+      // For each language, request his name and assign it
+      for (const tech of givenTechnologies) {
+        this.getTechnologyRequest(tech.id).subscribe(
+          (result: object) => {
+            // this only assigns the "name" property to the language,
+            // because only the name is returned from the request
+            Object.assign(tech, result);
+
+            if (lastGuid === tech.id) {
+              resolve(givenTechnologies);
+            }
+          }
+        );
+      }
+    });
+  }
+
+  putTechnologyRequest(authToken: string, langId: Guid, newName: string): Observable<object> {
+    const body = {
+      name: newName
+    };
+    const options = {
+      params: new HttpParams().set('Id', langId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_TECHNOLOGY_URL, body, options);
+  }
+
+  deleteTechnologyRequest(authToken: string, langId: Guid): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', langId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.delete(AppConstants.API_TECHNOLOGY_URL, options);
+  }
+}
diff --git a/src/app/services/token.service.ts b/src/app/services/token.service.ts
new file mode 100644
index 0000000..62bc07e
--- /dev/null
+++ b/src/app/services/token.service.ts
@@ -0,0 +1,47 @@
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import jwt_decode from 'jwt-decode';
+import { IJWTPayload } from 'src/interfaces/jwt-payload';
+import { IUserCredentials } from 'src/interfaces/user-credentials';
+import { AppConstants } from '../app-constants.module';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class TokenService {
+  constructor()
+  { }
+
+  /* Session storage */
+
+  setUserTokenToSessionStorage(response: object): void {
+    const token = JSON.stringify(response);
+    sessionStorage.setItem(AppConstants.SESSION_TOKEN_KEY, token.substr(10, token.length - 12));
+  }
+
+  getTokenFromSessionStorage(): string {
+    return sessionStorage.getItem(AppConstants.SESSION_TOKEN_KEY) ?? '';
+  }
+
+  getUserIdFromSessionStorageToken(): Guid {
+    const jwt: IJWTPayload = {
+      token: this.getTokenFromSessionStorage()
+    };
+    const userCred = jwt_decode<IUserCredentials>(jwt.token);
+
+    return userCred.ID;
+  }
+
+  getUsernameFromSessionStorageToken(): string {
+    const jwt: IJWTPayload = {
+      token: this.getTokenFromSessionStorage()
+    };
+    const userCred = jwt_decode<IUserCredentials>(jwt.token);
+
+    return userCred.Username;
+  }
+
+  logoutUserFromSessionStorage(): void {
+    sessionStorage.removeItem(AppConstants.SESSION_TOKEN_KEY);
+  }
+}
diff --git a/src/app/services/user.service.ts b/src/app/services/user.service.ts
new file mode 100644
index 0000000..31862c4
--- /dev/null
+++ b/src/app/services/user.service.ts
@@ -0,0 +1,179 @@
+import { Injectable } from '@angular/core';
+import { Guid } from 'guid-typescript';
+import { User } from '../../models/identity/user';
+import { FormGroup } from '@angular/forms';
+import { AppConstants } from 'src/app/app-constants.module';
+import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { Role } from 'src/models/identity/role';
+import { Friend } from 'src/models/identity/friend';
+import { TokenService } from './token.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class UserService {
+  constructor(private _http: HttpClient, private _tokenService: TokenService)
+  { }
+
+  getDefaultUser(): User {
+    return new User(Guid.createEmpty(), 'gosho_trapov', 'Gosho', 'Trapov', 'gotra@bg.com', AppConstants.FALLBACK_PROFILE_ICON, [], [], [], []);
+  }
+
+  /* Requests from session storage */
+
+  getUserFromSessionStorageRequest(): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.getUserRequest(userId, token);
+  }
+
+  addFriendToUserFromSessionStorageRequest(newFriendUserName: string): Observable<object> {
+    const userUserName = this._tokenService.getUsernameFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.addFriendToUserRequest(userUserName, token, newFriendUserName);
+  }
+
+  putUserFromSessionStorageRequest(updateUserFormGroup: FormGroup, userRoles: Role[], userFriends: Friend[]): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putUserRequest(userId, token, updateUserFormGroup, userRoles, userFriends);
+  }
+
+  putProfilePictureFromSessionStorageRequest(newPicture: File): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putProfilePictureRequest(userId, token, newPicture);
+  }
+
+  putBareUserFromSessionStorageRequest(user: User, password: string): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.putBareUserRequest(userId, token, user, password);
+  }
+
+  deleteUserFromSessionStorageRequest(): Observable<object> {
+    const userId = this._tokenService.getUserIdFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.deleteUserRequest(userId, token);
+  }
+
+  removeFriendFromUserFromSessionStorageRequest(friendToRemoveUserName: string): Observable<object> {
+    const userUserName = this._tokenService.getUsernameFromSessionStorageToken();
+    const token = this._tokenService.getTokenFromSessionStorage();
+
+    return this.removeFriendFromUserRequest(userUserName, token, friendToRemoveUserName);
+  }
+
+
+  /* User requests */
+
+  loginUserRequest(loginUserFormGroup: FormGroup): Observable<object> {
+    const body = {
+      UserName: loginUserFormGroup.get('username')?.value,
+      Password: loginUserFormGroup.get('password')?.value
+    };
+    return this._http.post(AppConstants.API_USER_LOGIN_URL, body);
+  }
+
+  registerUserRequest(registerUserFormGroup: FormGroup): Observable<object> {
+    const body = {
+      UserName: registerUserFormGroup.get('username')?.value,
+      Email: registerUserFormGroup.get('email')?.value,
+      FirstName: registerUserFormGroup.get('firstName')?.value,
+      LastName: registerUserFormGroup.get('lastName')?.value,
+      Password: registerUserFormGroup.get('password')?.value
+    };
+    return this._http.post(AppConstants.API_USER_REGISTER_URL, body);
+  }
+
+  addFriendToUserRequest(userUserName: string, authToken: string, newFriendUserName: string): Observable<object> {
+    const body = {
+      newFriendUserName: newFriendUserName
+    };
+    const options = {
+      params: new HttpParams().set('UserName', userUserName),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_USER_URL + '/AddFriend', body, options);
+  }
+
+  getUserRequest(userId: Guid, authToken: string): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.get(AppConstants.API_USER_URL, options);
+  }
+
+  getUserByUsernameRequest(username: string): Observable<object> {
+    const options = {
+      params: new HttpParams().set('UserName', username),
+    };
+    return this._http.get(AppConstants.API_USER_URL + '/GetUser', options);
+  }
+
+  putUserRequest(userId: Guid, authToken: string, updateUserFormGroup: FormGroup, userRoles: Role[], userFriends: Friend[]): Observable<object> {
+    const body = {
+      UserName: updateUserFormGroup.get('username')?.value,
+      Email: updateUserFormGroup.get('email')?.value,
+      FirstName: updateUserFormGroup.get('firstName')?.value,
+      LastName: updateUserFormGroup.get('lastName')?.value,
+      Password: updateUserFormGroup.get('password')?.value,
+      Roles: userRoles,
+      Friends: userFriends,
+      Languages: updateUserFormGroup.get('languages')?.value,
+      Technologies: updateUserFormGroup.get('technologies')?.value
+    };
+    const options = {
+      params: new HttpParams().set('Id', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_USER_URL, body, options);
+  }
+
+  putBareUserRequest(userId: Guid, authToken: string, user: User, password: string): Observable<object> {
+    const body: object = user;
+    Object.assign(body, { password: password });
+    const options = {
+      params: new HttpParams().set('Id', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_USER_URL, body, options);
+  }
+
+  putProfilePictureRequest(userId: Guid, authToken: string, newPicture: File): Observable<object> {
+    const form = new FormData();
+    form.append('picture', newPicture);
+    const options = {
+      params: new HttpParams().set('UserId', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.put(AppConstants.API_USER_URL + '/ProfilePicture', form, options);
+  }
+
+  deleteUserRequest(userId: Guid, authToken: string): Observable<object> {
+    const options = {
+      params: new HttpParams().set('Id', userId.toString()),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.delete(AppConstants.API_USER_URL, options);
+  }
+
+ removeFriendFromUserRequest(userUserName: string, authToken: string, friendToRemoveUserName: string): Observable<object> {
+    const body = {
+      friendUserNameToRemove: friendToRemoveUserName
+    };
+    const options = {
+      params: new HttpParams().set('UserName', userUserName),
+      headers: new HttpHeaders().set('Authorization', 'Bearer ' + authToken)
+    };
+    return this._http.post(AppConstants.API_USER_URL + '/RemoveFriend', body, options);
+  }
+}