/*
 * 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, apiGet, apiDelete, parseParams, setupHeader } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.info = "info";
	elements.ipBody = "ip-body";
	elements.label = "label";
	elements.linodeLabel = "linode-label";
	elements.linodeTag = "linode-tag";
	elements.linodeTagLink = "linode-tag-link";
	elements.lmcRow = "lmc-tr1";
	elements.lmcRowAlt = "lmc-tr2";
	elements.removeBox = "remove-box";
	elements.removeButton = "remove-button";
	elements.subnav = "subnav-link";
	elements.subnavActive = "subnav-link-active";

	// Data recieved from API calls
	var data = {};
	data.linode = {};

	// Static references to UI elements
	var ui = {};
	ui.ipBody = {};
	ui.label = {};
	ui.linodeLabel = {};
	ui.linodeTag = {};
	ui.linodeTagLink = {};
	ui.removeButton = {};

	// Temporary state
	var state = {};
	state.numReqs = 0;
	state.numReturns = 0;

	// Callback for linode details API call
	var displayDetails = function(response)
	{
		data.linode = response;

		// Set page title and header stuff
		document.title += " // " + data.linode.label;
		ui.linodeLabel.innerHTML = data.linode.label;
		ui.label.innerHTML = data.linode.label;
		if (data.linode.tags.length == 1) {
			ui.linodeTagLink.href = "/linodes?tag=" + data.linode.tags[0];
			ui.linodeTagLink.innerHTML = "(" + data.linode.tags[0] + ")";
			ui.linodeTag.style.display = "inline";
		}
	};

	// Callback for linode net info API call
	var displayNetInfo = function(response)
	{
		// Insert public IPs into table
		for (var i = 0; i < response.ipv4["public"].length; i++) {
			var row = document.createElement("tr");
			if (i % 2)
				row.className = elements.lmcRowAlt;
			else
				row.className = elements.lmcRow;

			var ipCell = document.createElement("td");
			var ip = document.createElement("span");
			ip.innerHTML = response.ipv4["public"][i].address;
			ipCell.appendChild(ip);
			if (response.ipv4["public"][i].rdns) {
				var br = document.createElement("br");
				var rdns = document.createElement("span");
				rdns.className = elements.info;
				rdns.innerHTML = response.ipv4["public"][i].rdns;
				ipCell.appendChild(br);
				ipCell.appendChild(rdns);
			}

			var removeCell = document.createElement("td");
			var removeBox = document.createElement("input");
			removeBox.id = response.ipv4["public"][i].address;
			removeBox.className = elements.removeBox;
			removeBox.type = "checkbox";
			removeCell.appendChild(removeBox);

			row.appendChild(ipCell);
			row.appendChild(removeCell);
			ui.ipBody.appendChild(row);
		}

		ui.removeButton.disabled = false;
	};

	// Event handler for remove button
	var handleRemove = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var ips = document.getElementsByClassName(elements.removeBox);
		state.numReqs = ips.length;
		state.numReturns = 0;

		// Submit removal request for each IP
		for (var i = 0; i < ips.length; i++) {
			if (!ips[i].checked)
				continue;

			apiDelete("/linode/instances/" + data.params.lid + "/ips/" + ips[i].id, function(response) {
				state.numReturns++;
				if (state.numReturns >= state.numReqs)
					location.href = "/linodes/remote_access?lid=" + data.params.lid;
			});
		}
	};

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

		// We need a Linode ID, so die if we don't have it
		if (!data.params.lid) {
			alert("No Linode ID supplied!");
			return;
		}

		setupHeader();

		// Update links on page to include proper Linode ID
		var anchors = document.getElementsByTagName("a");
		for (var i = 0; i < anchors.length; i++)
			anchors[i].href = anchors[i].href.replace("lid=0", "lid=" + data.params.lid);

		// Highlight the remote access subnav link
		var subnavLinks = document.getElementsByClassName(elements.subnav);
		for (var i = 0; i < subnavLinks.length; i++) {
			if (subnavLinks[i].pathname == "/linodes/remote_access")
				subnavLinks[i].className += " " + elements.subnavActive;
		}

		// Get element references
		ui.ipBody = document.getElementById(elements.ipBody);
		ui.label = document.getElementById(elements.label);
		ui.linodeLabel = document.getElementById(elements.linodeLabel);
		ui.linodeTag = document.getElementById(elements.linodeTag);
		ui.linodeTagLink = document.getElementById(elements.linodeTagLink);
		ui.removeButton = document.getElementById(elements.removeButton);

		// Attach event handlers
		ui.removeButton.addEventListener("click", handleRemove);

		// Get data from API
		apiGet("/linode/instances/" + data.params.lid, displayDetails, null);
		apiGet("/linode/instances/" + data.params.lid + "/ips", displayNetInfo, null);
	};

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