/*
 * 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, apiPost, parseParams, setupHeader, timeString } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.createButton = "create-button";
	elements.description = "description";
	elements.diskLabel = "disk-label";
	elements.label = "label";
	elements.linodeLabel = "linode-label";
	elements.linodeTag = "linode-tag";
	elements.linodeTagLink = "linode-tag-link";
	elements.nav = "navlink";
	elements.navActive = "navlink-active";
	elements.size = "size";
	elements.type = "type";

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

	// Static references to UI elements
	var ui = {};
	ui.createButton = {};
	ui.description = {};
	ui.diskLabel = {};
	ui.label = {};
	ui.linodeLabel = {};
	ui.linodeTag = {};
	ui.linodeTagLink = {};
	ui.size = {};
	ui.type = {};

	// Create button handler
	var handleCreate = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var req = {
			"disk_id": data.disk.id,
			"label": ui.label.value
		};
		if (ui.description.value.length)
			req.description = ui.description.value;

		apiPost("/images", req, function(response)
		{
			location.href = "/linodes/dashboard?lid=" + data.params.lid;
		});
	};

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

		// Set page title and header stuff
		ui.linodeLabel.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 image API call
	var displayDisk = function(response)
	{
		data.disk = response;

		// Display disk label in page header
		ui.diskLabel.innerHTML = data.disk.label;

		// Fill in details
		ui.label.value = data.disk.label;
		ui.type.innerHTML = data.disk.filesystem;
		ui.size.innerHTML = data.disk.size;
		ui.createButton.disabled = false;
	};

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

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

		// We also need a disk ID
		if (!data.params.did) {
			alert("No disk ID supplied!");
			return;
		}

		setupHeader();

		// Update links on page to include proper Linode and disk IDs
		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);
			anchors[i].href = anchors[i].href.replace("did=0", "did=" + data.params.did);
		}

		// 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.createButton = document.getElementById(elements.createButton);
		ui.description = document.getElementById(elements.description);
		ui.diskLabel = document.getElementById(elements.diskLabel);
		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.size = document.getElementById(elements.size);
		ui.type = document.getElementById(elements.type);

		// Attach event handlers
		ui.createButton.addEventListener("click", handleCreate);

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

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