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

(function()
{
	// Element names specific to this page
	elements.addButton = "add-button";
	elements.expiry = "expiry";
	elements.label = "label";
	elements.scopeBox = "scope-box";
	elements.scopes = "scopes";
	elements.selectNone = "select-none";
	elements.selectRo = "select-read_only";
	elements.selectRw = "select-read_write";

	// Data received from API calls
	var data = {};

	// Static references to UI elements
	var ui = {};
	ui.addButton = {};
	ui.expiry = {};
	ui.label = {};
	ui.scopes = {};
	ui.selectNone = {};
	ui.selectRo = {};
	ui.selectRw = {};

	// Display OAuth scopes in scope selector
	var displayScopes = function()
	{
		for (var scope in oauthScopes) {
			var row = document.createElement("tr");

			var label = document.createElement("td");
			label.innerHTML = oauthScopes[scope];
			row.appendChild(label);

			var none = document.createElement("td");
			var noneLabel = document.createElement("label");
			noneLabel.htmlFor = "scope-" + scope + "-none";
			var noneBox = document.createElement("input");
			noneBox.id = "scope-" + scope + "-none";
			noneBox.className = elements.scopeBox;
			noneBox.type = "radio";
			noneBox.name = "scope-" + scope;
			noneBox.checked = true;
			noneBox.addEventListener("input", handleSelectScope);
			noneLabel.appendChild(noneBox);
			none.appendChild(noneLabel);
			row.appendChild(none);

			var ro = document.createElement("td");
			var roLabel = document.createElement("label");
			roLabel.htmlFor = "scope-" + scope + "-read_only";
			var roBox = document.createElement("input");
			roBox.id = "scope-" + scope + "-read_only";
			roBox.className = elements.scopeBox;
			roBox.type = "radio";
			roBox.name = "scope-" + scope;
			roBox.addEventListener("input", handleSelectScope);
			roLabel.appendChild(roBox);
			ro.appendChild(roLabel);
			row.appendChild(ro);

			var rw = document.createElement("td");
			var rwLabel = document.createElement("label");
			rwLabel.htmlFor = "scope-" + scope + "-read_write";
			var rwBox = document.createElement("input");
			rwBox.id = "scope-" + scope + "-read_write";
			rwBox.className = elements.scopeBox;
			rwBox.type = "radio";
			rwBox.name = "scope-" + scope;
			rwBox.addEventListener("input", handleSelectScope);
			rwLabel.appendChild(rwBox);
			rw.appendChild(rwLabel);
			row.appendChild(rw);

			ui.scopes.appendChild(row);
		}
	};

	// Click handler for add button
	var handleAdd = function(event)
	{
		var req = {
			"label": ui.label.value
		};

		var expiry = parseInt(ui.expiry.value);
		if (expiry) {
			var expireDt = new Date(Date.now() + expiry).toISOString();
			req.expiry = expireDt.slice(0, expireDt.indexOf("."));
		}

		if (ui.selectRw.checked) {
			req.scopes = "*";
		} else {
			req.scopes = [];
			var buttons = document.getElementsByClassName(elements.scopeBox);
			for (var i = 0; i < buttons.length; i++) {
				if (!buttons[i].checked)
					continue;

				var attrs = buttons[i].id.split("-");
				if (attrs[2] == "none")
					continue;
				req.scopes.push(attrs[1] + ":" + attrs[2]);
			}
			req.scopes = req.scopes.join(" ");
			if (!req.scopes.length) {
				alert("You must select some permissions.");
				return;
			}
		}

		apiPost("/profile/tokens", req, function(response)
		{
			alert("Your API token has been created. Store this secret - it won't be shown again.\n" + response.token);
			location.href = "/profile/api";
		});
	};

	// Handler for the "select all" row
	var handleSelectAll = function(event)
	{
		var column = event.currentTarget.id.split("-")[1];
		var buttons = document.getElementsByClassName(elements.scopeBox);
		for (var i = 0; i < buttons.length; i++) {
			if (buttons[i].id.split("-")[2] == column)
				buttons[i].checked = true;
		}
	};

	// Handler for individual scope selectors
	var handleSelectScope = function(event)
	{
		ui.selectNone.checked = false;
		ui.selectRo.checked = false;
		ui.selectRw.checked = false;
	};

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

		setupHeader();

		// Get element references
		ui.addButton = document.getElementById(elements.addButton);
		ui.expiry = document.getElementById(elements.expiry);
		ui.label = document.getElementById(elements.label);
		ui.scopes = document.getElementById(elements.scopes);
		ui.selectNone = document.getElementById(elements.selectNone);
		ui.selectRo = document.getElementById(elements.selectRo);
		ui.selectRw = document.getElementById(elements.selectRw);

		// Add scopes to tables
		displayScopes();
		ui.selectNone.checked = false;
		ui.selectRo.checked = false;
		ui.selectRw.checked = false;

		// Register event handlers
		ui.addButton.addEventListener("click", handleAdd);
		ui.selectNone.addEventListener("change", handleSelectAll);
		ui.selectRo.addEventListener("change", handleSelectAll);
		ui.selectRw.addEventListener("change", handleSelectAll);
	};

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