'use strict';

let currentChatId = null;

function selectChat(div) {
	let chatId = div.getAttribute('chat');
	if( chatId === currentChatId )
		return;
	let selected = div.parentNode.querySelector('[selected]');
	if( selected )  selected.removeAttribute('selected');
	div.setAttribute('selected','');
	ajax(`get_chat.js?chat=${chatId}`);
	currentChatId = chatId;
}

function fixTextarea(event) {
	let textarea = event.target;
	textarea.style.height = 'initial';
	textarea.style.height = (textarea.scrollHeight+2) + 'px';
	textarea.scrollIntoViewIfNeeded(false);
}

const isMobile = 'ontouchstart' in window || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0;

function addPost() {
	let textarea = document.querySelector('div[input] textarea');
	let text = textarea.value;
	if( text.trim() === '' )
		return;
	ajax(`add_post.js?chat=${currentChatId}&content=${encodeURIComponent(text)}`);
	textarea.value = '';
	console.log('addPost');
}

function textareaKey(event) {
	if( event.keyCode===13 && !event.shiftKey && !event.ctrlKey && !isMobile ) {
		event.preventDefault();
		addPost();
	}
}

function fixDates() {
	let spans = document.querySelectorAll('span[when][fix]');
	for( let span of spans ) {
		span.textContent = new Date(Number(span.textContent)).toLocaleString();
		span.removeAttribute('fix');
	}
}