import { BaseController } from "./base_controller.js";

export class CommentsController extends BaseController {
    constructor(replies_controller) {
	super();
	this.replies_controller = replies_controller;
	this.comments_node = document.getElementById("comments-thread");
	this.renderForm();
	this.renderComments();
    }

    renderForm() {
	this.get("/api/comments/new").then((value) => {
	    const form = value?.getElementById("comment-form");

	    if(form != null) {
		this.comments_node.appendChild(form);
		this.form_element = document.getElementById("comment-form");
		this.form_element.addEventListener("submit", this.submit.bind(this));
	    }
	});
    }

    renderComments() {
	this.get(`/api/comments?path=${this.post}`).then((value) => {
	    const comments = value?.getElementById("comment-section");

	    if(comments != null) {
		this.comments_node.appendChild(comments);
		this.replies_controller.init();
	    }
	});
    }

    renderSubmitResponse(response_document) {
	const new_comments = this.htmlFromResponse(response_document).getElementById("comment-section");
	const comments = document.getElementById("comment-section");
	comments.replaceWith(new_comments);
    }

    async submit(event) {
	event.preventDefault();
	var form = new FormData(event.target);
	form.append("domain", `${window.location.protocol}//${window.location.host}`);

	try {
	    const response = await fetch(`${this.comments_server_host}/api/comments?path=${this.post}`,
					 { method: "POST", body: form });
	    
	    response.text().then((response_document) => {
		this.renderSubmitResponse(response_document);
	    });
	} catch(error) {}
    }
 }