/*
 * 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, md5, parseParams, setupHeader, timeString } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.info = "info";
	elements.lmcRow = "lmc-tr1";
	elements.lmcRowAlt = "lmc-tr2";
	elements.loading = "loading";
	elements.navlinkActive = "navlink-active";
	elements.profileImg = "profile-img";
	elements.userTable = "user-table";

	// Data received from API calls
	var data = {};
	data.logins = [];
	data.users = [];

	// Static references to UI elements
	var ui = {};
	ui.loading = {};
	ui.userTable = {};

	// Temporary state
	var state = {};
	state.haveLogins = false;
	state.haveUsers = false;

	// Generates a user table row
	var createUserRow = function(user, alt)
	{
		var row = document.createElement("tr");
		if (alt)
			row.className = elements.lmcRowAlt;
		else
			row.className = elements.lmcRow;

		var nameCell = document.createElement("td");
		var imgLink = document.createElement("a");
		imgLink.href = "/user/edit?user=" + user.username;
		var img = document.createElement("img");
		img.className = elements.profileImg;
		img.src = "https://www.gravatar.com/avatar/" + md5(user.email, false);
		img.alt = user.username;
		imgLink.appendChild(img);
		var separator = document.createElement("span");
		separator.innerHTML = " ";
		var nameLink = document.createElement("a");
		nameLink.href = "/user/edit?user=" + user.username;
		nameLink.innerHTML = user.username;
		nameCell.appendChild(imgLink);
		nameCell.appendChild(separator);
		nameCell.appendChild(nameLink);
		row.appendChild(nameCell);

		var lastLogin = document.createElement("td");
		var loginDate = null;
		for (var i = data.logins.length - 1; i >= 0; i--) {
			if (data.logins[i].username == user.username) {
				loginDate = new Date(data.logins[i].datetime + "Z");
				break;
			}
		}
		if (loginDate) {
			var now = new Date();
			var ago = document.createElement("span");
			ago.innerHTML = timeString(now - loginDate, true);
			lastLogin.appendChild(ago);
			var br = document.createElement("br");
			lastLogin.appendChild(br);
			var dateString = document.createElement("span");
			dateString.className = elements.info;
			dateString.innerHTML = loginDate.toLocaleString();
			lastLogin.appendChild(dateString);
		} else {
			lastLogin.innerHTML = "Never";
		}
		row.appendChild(lastLogin);

		var restricted = document.createElement("td");
		if (user.restricted) {
			var yes = document.createElement("span");
			yes.innerHTML = "Yes (";
			var permsLink = document.createElement("a");
			permsLink.href = "/user/grants?user=" + user.username;
			permsLink.innerHTML = "edit permissions";
			var close = document.createElement("span");
			close.innerHTML = ")";
			restricted.appendChild(yes);
			restricted.appendChild(permsLink);
			restricted.appendChild(close);
		} else {
			restricted.innerHTML = "No";
		}
		row.appendChild(restricted);

		var options = document.createElement("td");
		var editLink = document.createElement("a");
		editLink.href = "/user/edit?user=" + user.username;
		editLink.innerHTML = "Edit";
		var pipe = document.createElement("span");
		pipe.innerHTML = " | ";
		var removeLink = document.createElement("a");
		removeLink.href = "/user/remove?user=" + user.username;
		removeLink.innerHTML = "Remove";
		options.appendChild(editLink);
		options.appendChild(pipe);
		options.appendChild(removeLink);
		row.appendChild(options);

		return row;
	};

	// Callback for logins API call
	var displayLogins = function(response)
	{
		data.logins = data.logins.concat(response.data);

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

		state.haveLogins = true;
		if (state.haveUsers) {
			ui.loading.remove();

			// Add users to table
			for (var i = 0; i < data.users.length; i++)
				ui.userTable.appendChild(createUserRow(data.users[i], ui.userTable.children.length % 2));
			}
	};

	// Callback for users API call
	var displayUsers = function(response)
	{
		data.users = data.users.concat(response.data);

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

		state.haveUsers = true;
		if (state.haveLogins) {
			ui.loading.remove();

			// Add users to table
			for (var i = 0; i < data.users.length; i++)
				ui.userTable.appendChild(createUserRow(data.users[i], ui.userTable.children.length % 2));
		}
	};

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

		setupHeader();

		// Highlight the account nav link
		var navlinks = document.getElementsByClassName(elements.navlink);
		for (var i = 0; i < navlinks.length; i++) {
			if (navlinks[i].pathname == "/account/")
				navlinks[i].className = " " + elements.navlinkActive;
		}

		// Get element references
		ui.loading = document.getElementById(elements.loading);
		ui.userTable = document.getElementById(elements.userTable);

		// Get data from API
		apiGet("/account/users", displayUsers, null);
		apiGet("/account/logins", displayLogins, null);
	};

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