import {Post} from './post.model';
import {Injectable} from '@angular/core';
import {Subject} from 'rxjs';
import {HttpClient} from '@angular/common/http';

@Injectable({providedIn: 'root'})
export class PostService{
	private posts: Post[] = [];
	private postUpdated = new Subject<Post[]>();

	constructor(private http: HttpClient){
	}

	getPosts(){
		this.http.get<{message: string, posts: Post[]}>('http://localhost:3000/api/posts')
		.subscribe((PostData) => {
			this.posts = PostData.posts;
			this.postUpdated.next([...this.posts]);
		});
	}

	addPost(title: string, content: string){
		const post: Post={id: '', title: title, content: content};
		this.http.post<{message: string}>('http://localhost:3000/api/posts', post).
		subscribe((responseData) => {
			console.log(responseData.message);
			this.posts.push(post);
			this.postUpdated.next([...this.posts]);
		});
	}

	getPostUpdateListener() {
		return this.postUpdated;
	}
}