import { Injectable } from '@angular/core' ; import { environment } from '@env/environment' ; import { Observable } from 'rxjs' ; import { HttpClient } from '@angular/common/http' ; import { Conversation } from '../chat-message.model' ; @ Injectable ( ) export class ChatService { public apiBaseUrl = environment . API_BASE_URL ; readonly entityPath = 'conversations' ; constructor ( private httpClient ) { } saveConversation ( conversation ) { } }