Basic structure for global error handling

web/src/app/app.module.ts

@@ -35,6 +35,8 @@ import { NoAccessComponent } from 'app/components/no-access/no-access.component'
 import { RemoveConfirmationService } from './services/remove-confirmation/remove-confirmation.service';
 import { FormsValidatorService } from './shared/services/forms/forms-validator.service';
 import { UploadService } from './shared/services/upload/upload.service';
+import { ErrorsService } from './shared/services/errors/errors.service';
+
 
 /**
  * Components
@@ -107,6 +109,7 @@ export function startupServiceFactory(startupService: StartupService): () => Pro
     RemoveConfirmationService,
     FormsValidatorService,
     UploadService,
+    ErrorsService,
   ],
   bootstrap: [AppComponent]
 })

web/src/app/models/error-model.ts

@@ -0,0 +1,14 @@
+import { ErrorHandler } from '@angular/core';
+import { ERROR_TYPES, errors } from '../services/general-modal/errors';
+
+export class ErrorModel {
+  head: string;
+  body: string;
+  errObj?: ErrorHandler;
+
+  constructor(key: ERROR_TYPES, passedError?: ErrorHandler) {
+    this.head = errors.get(key).name;
+    this.body = errors.get(key).text;
+    this.errObj = passedError;
+  }
+}

web/src/app/services/general-modal/errors.ts

@@ -0,0 +1,24 @@
+import { ErrorModel } from '../../models/error-model';
+import {Pair} from '../../models/pair';
+
+
+export enum ERROR_TYPES {
+  NO_AUTH,
+  EXP_AUTH,
+  NO_ACCESS,
+}
+// TODO: funktioniert unser Pair hierfür? -> Konstruktor checken!
+export const errors = new Map<ERROR_TYPES, Pair> ([
+  [ERROR_TYPES.NO_AUTH, new Pair(
+    'Authentication required',
+    'You need to be logged in to perform this action.'
+  )],
+  [ERROR_TYPES.EXP_AUTH, new Pair(
+    'Authentication expired',
+    'Your session has expired, log in to perform this action.'
+  )],
+  [ERROR_TYPES.NO_ACCESS, new Pair(
+    'Access denied',
+    'You have no permission to perform this action.'
+  )],
+]);

web/src/app/services/general-modal/general-modal.service.ts

@@ -2,6 +2,8 @@ import { Injectable } from '@angular/core';
 import { Subject, Observable } from 'rxjs';
 import { MessageModal } from 'app/models/message-modal';
 
+import { errors as ERRORS } from './errors';
+
 @Injectable()
 export class GeneralModalService {
   private messageTriggered = new Subject<MessageModal>();