Log warnings when using hardcoded data.

Signed-off-by: David Mehren <git@herrmehren.de>

docs/dev/2.0.md

@@ -0,0 +1,7 @@
+# 2.0 Development Hints
+
+## Dev Setup
+- Clone backend and frontend in two folders.
+- Run `yarn install` in both projects
+- Start the backend server in watch mode using `yarn start:dev`. The backend is then accessible on port 3000.
+- Start the frontend dev server using `yarn start`. The frontend is now accessible on port 3001. 

src/history/history.service.ts

@@ -1,11 +1,14 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import { HistoryEntryUpdateDto } from './history-entry-update.dto';
 import { HistoryEntryDto } from './history-entry.dto';
 
 @Injectable()
 export class HistoryService {
+  private readonly logger = new Logger(HistoryService.name);
+
   getUserHistory(username: string): HistoryEntryDto[] {
     //TODO: Use the database
+    this.logger.warn('Using hardcoded data!');
     return [
       {
         metadata: {
@@ -44,6 +47,7 @@ export class HistoryService {
     updateDto: HistoryEntryUpdateDto,
   ): HistoryEntryDto {
     //TODO: Use the database
+    this.logger.warn('Using hardcoded data!');
     return {
       metadata: {
         alias: null,

src/users/users.service.ts

@@ -1,10 +1,13 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import { UserInfoDto } from './user-info.dto';
 
 @Injectable()
 export class UsersService {
+  private readonly logger = new Logger(UsersService.name);
+
   getUserInfo(): UserInfoDto {
     //TODO: Use the database
+    this.logger.warn('Using hardcoded data!');
     return {
       displayName: 'foo',
       userName: 'fooUser',