import 'babel-polyfill';
import * as search from './lib/search';
import * as dom from './lib/dom';
import * as ajax from './lib/ajax';

async function resultClicked(grilId) {
	let response = null;
	try {
		response = await ajax.post(
			window.location,
			'id=' + grilId,
			{ headers: {
				'Content-type': 'application/x-www-form-urlencoded'
			} });
	} catch (e) {
		alert(e.message);
		return;
	}
	document.getElementById('gril-list').innerHTML += response;
}

async function updateGrilOrder(gril, pos) {
    return await ajax.post(
        `${window.location}/order`,
        `gril=${gril}&pos=${pos}`,
        { headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
        } });
}

function getCurrentOrder(gril) {
    const els = document.querySelectorAll('#gril-list > li')
    
    for (let i = 0; i < els.length; i++) {
        if (els[i].id === gril) {
            console.log(i);
            return i;
        }
    }
    return -1;
}

async function listButtonHandler(e) {
	let liFilter = x => x.tagName && x.tagName.toLowerCase() === 'li';
	let item = dom.closest(e.target, liFilter);
	let pItem = dom.previous(item, liFilter),
	    nItem = dom.next(dom.next(item, liFilter), liFilter);
	switch (e.target.classList[0]) {
	case 'gril-sort-up':
        try {
            await updateGrilOrder(item.id, getCurrentOrder(item.id) - 1);
        } catch(e) {
            alert(e.message);
        }
		item.parentNode.insertBefore(item, pItem);
		break;
	case 'gril-sort-down':
        try {
            await updateGrilOrder(item.id, getCurrentOrder(item.id) + 1);
        } catch(e) {
            alert(e.message);
        }
        
		if (nItem) {
			item.parentNode.insertBefore(item, nItem);
		} else {
			item.parentNode.appendChild(item);
		}
		break;
	case 'gril-delete':
        let liFilter = x => x.tagName && x.tagName.toLowerCase() === 'li';
        let item = dom.closest(e.target, liFilter);
		try {
        	await ajax.del(
				`${window.location}/order`,
				`gril=${item.id}`,
				{ headers: {
					'Content-Type': 'application/x-www-form-urlencoded',
				} });
		item.parentNode.removeChild(item);
		} catch(e) {
			alert(e.message);
		}
		break;
	}
}

function main() {
	let is = new search.InstantSearch(
		document.getElementById('gril-add-search'),
		document.getElementById('search-results'));
	is.resultClicked = resultClicked;
	document.getElementById('gril-list').addEventListener(
		'click',
		listButtonHandler,
		true);
}

dom.ready(main);