/*
 * 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, countryContinents, parseParams, regionNames, setupHeader } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.addButton = "add-button";
	elements.datacenters = "datacenters";
	elements.dcOther = "dc-other";
	elements.hourly = "hourly";
	elements.monthly = "monthly";

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

	// Static references to UI elements
	var ui = {};
	ui.addButton = {};
	ui.datacenters = {};
	ui.dcOther = {};
	ui.hourly = {};
	ui.monthly = {};

	// Callback for regions API call
	var displayRegions = function(response)
	{
		// Add regions that support block storage to array
		for (var i = 0; i < response.data.length; i++) {
			if (response.data[i].capabilities.includes("NodeBalancers"))
				data.regions.push(response.data[i]);
		}

		// Request the next page if there are more pages
		if (response.page != response.pages) {
			apiGet("/regions?page=" + (response.page + 1), displayRegions, null);
			return;
		}

		// Add regions to selector
		for (var i = 0; i < data.regions.length; i++) {
			// Regional pricing
			if (data.regions[i].id == "id-cgk") {
				data.regions[i].hourly = "$0.018/hr";
				data.regions[i].monthly = "$12.00/mo";
			} else if (data.regions[i].id == "br-gru") {
				data.regions[i].hourly = "$0.021/hr";
				data.regions[i].monthly = "$14.00/mo";
			} else {
				data.regions[i].hourly = "$0.015/hr";
				data.regions[i].monthly = "$10.00/mo";
			}

			var loc = document.createElement("option");
			loc.value = data.regions[i].id;
			if (data.regions[i].label && data.regions[i].label.length)
				loc.innerHTML = data.regions[i].label;
			else if (regionNames[data.regions[i].id])
				loc.innerHTML = regionNames[data.regions[i].id];
			else
				loc.innerHTML = data.regions[i].id;
			var optgroup = null;
			if (countryContinents[data.regions[i].country])
				optgroup = document.getElementById(countryContinents[data.regions[i].country]);
			if (!optgroup)
				optgroup = ui.dcOther;
			optgroup.style.display = "initial";
			optgroup.appendChild(loc);
		}

		ui.addButton.disabled = false;
	};

	// Click handler for add button
	var handleAdd = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var req = {
			"region": ui.datacenters.value
		};
		if (data.params.tag)
			req.tags = [data.params.tag];

		apiPost("/nodebalancers", req, function(response)
		{
			location.href = "/nodebalancers/balancer?nbid=" + response.id;
		});
	};

	// Location select handler
	var handleLocation = function(event)
	{
		// Update prices based on location
		for (var i = 0; i < data.regions.length; i++) {
			if (data.regions[i].id == ui.datacenters.value) {
				ui.hourly.innerHTML = data.regions[i].hourly;
				ui.monthly.innerHTML = data.regions[i].monthly;
				break;
			}
		}
	};

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

		setupHeader();

		// Get element references
		ui.addButton = document.getElementById(elements.addButton);
		ui.datacenters = document.getElementById(elements.datacenters);
		ui.dcOther = document.getElementById(elements.dcOther);
		ui.hourly = document.getElementById(elements.hourly);
		ui.monthly = document.getElementById(elements.monthly);

		// Attach event handlers
		ui.addButton.addEventListener("click", handleAdd);
		ui.datacenters.addEventListener("input", handleLocation);

		// Get data from API
		apiGet("/regions", displayRegions, null);
	};

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