/* CLASSES */

import './constants.ts';
import './interfaces.ts';

class PostManager {
    private posts: Post[] = [];
    private postIterator: IterableIterator<any>;

    constructor() {
        this.postIterator = this.fetchPost();
    }

    private *fetchPost() {
        let post_id: number = FIRST_POST_ID;

        while (post_id <= MAX_POST_COUNT) {
            yield fetch(`${HOST_URL}${post_id++}`).then(response => response.json());
        }
    }

    public collectNextPost() {
        let post = this.postIterator.next();

        if (post.done) throw new Error(`Maximum post limit is ${MAX_POST_COUNT}`);

        post.value.then(post => this.posts.push(post));
        return post.done;
    }

    public getPosts() {
        return this.posts;
    }
}