add comment function

src-ui/src/app/services/rest/document-comment.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { DocumentCommentService } from './document-comment.service';
+
+describe('DocumentCommentService', () => {
+  let service: DocumentCommentService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(DocumentCommentService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src-ui/src/app/services/rest/document-comment.service.ts

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+import { Injectable } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { PaperlessDocumentComment } from 'src/app/data/paperless-document-comment';
+import { AbstractPaperlessService } from './abstract-paperless-service';
+import { Observable } from 'rxjs';
+import { PaperlessDocumentCommentFrame } from 'src/app/data/paperless-document-comment-frame';
+
+@Injectable({
+    providedIn: 'root'
+})
+export class DocumentCommentService extends AbstractPaperlessService<PaperlessDocumentComment> {
+
+  constructor(http: HttpClient) {
+    super(http, 'documents')
+  }
+
+
+  getComments(id: number): Observable<PaperlessDocumentComment> {
+    return this.http.get<PaperlessDocumentComment[]>(this.getResourceUrl(id, "comments"))
+  }
+
+  addComment(id: number, comment): Observable<PaperlessDocumentComment[]>{
+    return this.http.post<PaperlessDocumentComment[]>(this.getResourceUrl(id, 'comments'), {"payload": comment})
+  }
+
+  deleteComment(documentId: number, commentId: number): Observable<PaperlessDocumentComment[]>{
+    let httpParams = new HttpParams();
+    httpParams = httpParams.set("commentId", commentId.toString());
+    return this.http.delete<PaperlessDocumentComment[]>(this.getResourceUrl(documentId, 'comments'), {params: httpParams});
+  }
+} 

src-ui/src/app/services/rest/environment.service.spec.ts

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+import { TestBed } from '@angular/core/testing';
+
+import { EnvironmentService } from './environment.service';
+
+describe('EnvironmentService', () => {
+  let service: EnvironmentService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(EnvironmentService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

src-ui/src/app/services/rest/environment.service.ts

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+import { HttpClient, HttpParams } from '@angular/common/http';
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs';
+import { PaperlessEnvironment } from 'src/app/data/paperless-environment';
+import { environment } from 'src/environments/environment'
+
+@Injectable({
+  providedIn: 'root'
+})
+export class EnvironmentService {
+
+  protected baseUrl: string = environment.apiBaseUrl
+
+  constructor(protected http: HttpClient) { }
+
+  get(environment: string): Observable<PaperlessEnvironment> {
+    let httpParams = new HttpParams();
+    httpParams = httpParams.set('name', environment);
+
+    return this.http.get<PaperlessEnvironment>(`${this.baseUrl}environment/`, {params: httpParams})
+  }
+}