/*
 * This file is part of Linode Manager Classic.
 *
 * Linode Manager Classic is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Linode Manager Classic is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Linode Manager Classic.  If not, see <https://www.gnu.org/licenses/>.
 */

import { settings, elements, regionNames, apiGet, parseParams, setupHeader, timeString } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.lmcRow = "lmc-tr1";
	elements.lmcRowAlt = "lmc-tr2";
	elements.loading = "loading";
	elements.imageBody = "image-body";
	elements.nav = "navlink";
	elements.navActive = "navlink-active";

	// Data recieved from API calls
	var data = {};
	data.images = [];

	// Static references to UI elements
	var ui = {};
	ui.loading = {};
	ui.imageBody = {};

	// Generates a table row for an image
	var createImageRow = function(image, alt)
	{
		var row = document.createElement("tr");
		if (alt)
			row.className = elements.lmcRowAlt;
		else
			row.className = elements.lmcRow;

		var label = document.createElement("td");
		label.innerHTML = image.label;
		row.appendChild(label);

		var status = document.createElement("td");
		status.innerHTML = image.status.charAt(0).toUpperCase() + image.status.slice(1).replace(/_/g, " ");
		row.appendChild(status);

		var size = document.createElement("td");
		size.innerHTML = image.size + " MB";
		row.appendChild(size);

		var type = document.createElement("td");
		type.innerHTML = image.type;
		row.appendChild(type);

		var created = document.createElement("td");
		var now = new Date();
		var createDate = new Date(image.created + "Z");
		created.innerHTML = timeString(now - createDate, true);
		row.appendChild(created);

		var expires = document.createElement("td");
		if (image.expiry) {
			var expireDate = new Date(image.expiry + "Z");
			expires.innerHTML = timeString(now - expireDate, true);
		}
		row.appendChild(expires);

		var options = document.createElement("td");
		var edit = document.createElement("a");
		edit.href = "/images/edit?iid=" + image.id;
		edit.innerHTML = "Edit";
		var separator = document.createElement("span");
		separator.innerHTML = " | ";
		var del = document.createElement("a");
		del.href = "/images/delete?iid=" + image.id;
		del.innerHTML = "Delete";
		options.appendChild(edit);
		options.appendChild(separator);
		options.appendChild(del);
		row.appendChild(options);

		return row;
	};

	// Callback for images API call
	var displayImages = function(response)
	{
		// Add images to array
		data.images = data.images.concat(response.data);

		// Request
		if (response.page != response.pages) {
			var progress = (response.page / response.pages) * 100;
			progress = progress.toFixed(0);
			ui.loading.innerHTML = "Loading " + progress + "%...";
			var filter = {
				"vendor": null
			};
			apiGet("/images?page=" + (response.page + 1), displayImages, filter);
		}

		// Insert images
		ui.loading.remove();
		for (var i = 0; i < data.images.length; i++)
			ui.imageBody.appendChild(createImageRow(data.images[i], i % 2));
	};

	// Initial setup
	var setup = function()
	{
		// Parse URL parameters
		data.params = parseParams();

		setupHeader();

		// Highlight the Linodes nav link
		var navLinks = document.getElementsByClassName(elements.nav);
		for (var i = 0; i < navLinks.length; i++) {
			if (navLinks[i].pathname == "/linodes/")
				navLinks[i].className = elements.navActive;
		}

		// Get element references
		ui.loading = document.getElementById(elements.loading);
		ui.imageBody = document.getElementById(elements.imageBody);

		// Get data from API
		var filter = {
			"vendor": null
		};
		apiGet("/images", displayImages, filter);
	};

	// Attach onload handler
	window.addEventListener("load", setup);
})();