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

(function()
{
	// Element names specific to this page
	elements.alertsSaved = "alerts-saved";
	elements.cpuEnabled = "cpu-enabled";
	elements.cpuValue = "cpu-value";
	elements.incomingEnabled = "incoming-enabled";
	elements.incomingValue = "incoming-value";
	elements.ioEnabled = "io-enabled";
	elements.ioValue = "io-value";
	elements.label = "label";
	elements.lassie = "lassie";
	elements.lassieSaved = "lassie-saved";
	elements.linodeLabel = "linode-label";
	elements.linodeTag = "linode-tag";
	elements.linodeTagLink = "linode-tag-link";
	elements.outboundEnabled = "outbound-enabled";
	elements.outboundValue = "outbound-value";
	elements.saveAlerts = "save-alerts";
	elements.saveDisplay = "save-display";
	elements.saveLassie = "save-lassie";
	elements.tags = "tags";
	elements.transferEnabled = "transfer-enabled";
	elements.transferValue = "transfer-value";

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

	// Static references to UI elements
	var ui = {};
	ui.alertsSaved = {};
	ui.cpuEnabled = {};
	ui.cpuValue = {};
	ui.incomingEnabled = {};
	ui.incomingValue = {};
	ui.ioEnabled = {};
	ui.ioValue = {};
	ui.label = {};
	ui.lassie = {};
	ui.lassieSaved = {};
	ui.linodeLabel = {};
	ui.linodeTag = {};
	ui.linodeTagLink = {};
	ui.outboundEnabled = {};
	ui.outboundValue = {};
	ui.saveAlerts = {};
	ui.saveDisplay = {};
	ui.saveLassie = {};
	ui.tags = {};
	ui.transferEnabled = {};
	ui.transferValue = {};

	// 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;
		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";
		}

		// Fill in values
		ui.label.value = data.linode.label;
		ui.tags.value = data.linode.tags.join(",");
		ui.saveDisplay.disabled = false;
		if (data.linode.watchdog_enabled)
			ui.lassie.value = "enabled";
		else
			ui.lassie.value = "disabled";
		ui.saveLassie.disabled = false;
		ui.cpuEnabled.checked = data.linode.alerts.cpu;
		ui.cpuValue.value = data.linode.alerts.cpu;
		ui.ioEnabled.checked = data.linode.alerts.io;
		ui.ioValue.value = data.linode.alerts.io;
		ui.incomingEnabled.checked = data.linode.alerts.network_in;
		ui.incomingValue.value = data.linode.alerts.network_in;
		ui.outboundEnabled.checked = data.linode.alerts.network_out;
		ui.outboundValue.value = data.linode.alerts.network_out;
		ui.transferEnabled.checked = data.linode.alerts.transfer_quota;
		ui.transferValue.value = data.linode.alerts.transfer_quota;
		ui.saveAlerts.disabled = false;
	};

	// Handler for alert settings save
	var handleSaveAlerts = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var req = {
			"alerts": {
				"cpu": parseInt(ui.cpuValue.value),
				"io": parseInt(ui.ioValue.value),
				"network_in": parseInt(ui.incomingValue.value),
				"network_out": parseInt(ui.outboundValue.value),
				"transfer_quota": parseInt(ui.transferValue.value)
			}
		};

		// Set values to 0 if not enabled
		if (!ui.cpuEnabled.checked)
			req.alerts.cpu = 0;
		if (!ui.ioEnabled.checked)
			req.alerts.io = 0;
		if (!ui.incomingEnabled.checked)
			req.alerts.network_in = 0;
		if (!ui.outboundEnabled.checked)
			req.alerts.network_out = 0;
		if (!ui.transferEnabled.checked)
			req.alerts.transfer_quota = 0;

		var callback = function(response)
		{
			ui.alertsSaved.style.display = "block";
		};

		apiPut("/linode/instances/" + data.params.lid, req, callback);
	};

	// Handler for display settings save
	var handleSaveDisplay = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var req = {
			"label": ui.label.value,
			"tags": []
		};

		if (ui.tags.value.length)
			req.tags = ui.tags.value.split(",");

		var callback = function(response)
		{
			location.reload();
		};

		apiPut("/linode/instances/" + data.params.lid, req, callback);
	};

	// Handler for Lassie settings save
	var handleSaveLassie = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		var req = {
			"watchdog_enabled": (ui.lassie.value == "enabled")
		};

		var callback = function(response)
		{
			ui.lassieSaved.style.display = "block";
		};

		apiPut("/linode/instances/" + data.params.lid, req, callback);
	};

	// 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);

		// Get element references
		ui.alertsSaved = document.getElementById(elements.alertsSaved);
		ui.cpuEnabled = document.getElementById(elements.cpuEnabled);
		ui.cpuValue = document.getElementById(elements.cpuValue);
		ui.incomingEnabled = document.getElementById(elements.incomingEnabled);
		ui.incomingValue = document.getElementById(elements.incomingValue);
		ui.ioEnabled = document.getElementById(elements.ioEnabled);
		ui.ioValue = document.getElementById(elements.ioValue);
		ui.label = document.getElementById(elements.label);
		ui.lassie = document.getElementById(elements.lassie);
		ui.lassieSaved = document.getElementById(elements.lassieSaved);
		ui.linodeLabel = document.getElementById(elements.linodeLabel);
		ui.linodeTag = document.getElementById(elements.linodeTag);
		ui.linodeTagLink = document.getElementById(elements.linodeTagLink);
		ui.outboundEnabled = document.getElementById(elements.outboundEnabled);
		ui.outboundValue = document.getElementById(elements.outboundValue);
		ui.saveAlerts = document.getElementById(elements.saveAlerts);
		ui.saveDisplay = document.getElementById(elements.saveDisplay);
		ui.saveLassie = document.getElementById(elements.saveLassie);
		ui.tags = document.getElementById(elements.tags);
		ui.transferEnabled = document.getElementById(elements.transferEnabled);
		ui.transferValue = document.getElementById(elements.transferValue);

		// Attach event handlers
		ui.saveAlerts.addEventListener("click", handleSaveAlerts);
		ui.saveDisplay.addEventListener("click", handleSaveDisplay);
		ui.saveLassie.addEventListener("click", handleSaveLassie);

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

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