/*
 * 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, apiDelete, apiGet, apiPut, oauthScopes, parseParams, setupHeader, timeString } from "/global.js";

(function()
{
	// Element names specific to this page
	elements.apiKeys = "api-keys";
	elements.appImg = "app-img";
	elements.authorizedApps = "authorized-apps";
	elements.hoverInfo = "hover-info";
	elements.info = "info";
	elements.lmcRow = "lmc-tr1";
	elements.lmcRowAlt = "lmc-tr2";

	// Data received from API calls
	var data = {};
	data.apps = [];
	data.keys = [];

	// Static references to UI elements
	var ui = {};
	ui.apiKeys = {};
	ui.authorizedApps = {};

	// Creates a row in the authorized apps table
	var createAppRow = function(app, alt)
	{
		var row = document.createElement("tr");
		if (alt)
			row.className = elements.lmcRowAlt;
		else
			row.className = elements.lmcRow;

		var thumb = document.createElement("td");
		if (app.thumbnail_url && app.thumbnail_url.length) {
			var thumbImg = document.createElement("img");
			thumbImg.className = elements.appImg;
			thumbImg.src = settings.apiURL + app.thumbnail_url;
			thumbImg.alt = app.label;
			thumb.appendChild(thumbImg);
		}
		row.appendChild(thumb);

		var label = document.createElement("td");
		if (app.website && app.website.length) {
			var link = document.createElement("a");
			link.href = app.website;
			link.target = "_blank";
			link.innerHTML = app.label;
			label.appendChild(link);
		} else {
			label.innerHTML = app.label;
		}
		row.appendChild(label);

		var created = document.createElement("td");
		var created1 = document.createElement("span");
		var now = new Date();
		var createDt = new Date(app.created + "Z");
		created1.innerHTML = timeString(now - createDt, true);
		var created2 = document.createElement("span");
		created2.className = elements.info;
		created2.innerHTML = createDt.toLocaleString();
		created.appendChild(created1);
		created.appendChild(document.createElement("br"));
		created.appendChild(created2);
		row.appendChild(created);

		var expires = document.createElement("td");
		if (app.expiry) {
			var expires1 = document.createElement("span");
			var expireDt = new Date(app.expiry + "Z");
			expires1.innerHTML = timeString(now - expireDt, true);
			var expires2 = document.createElement("span");
			expires2.className = elements.info;
			expires2.innerHTML = expireDt.toLocaleString();
			expires.appendChild(expires1);
			expires.appendChild(document.createElement("br"));
			expires.appendChild(expires2);
		} else {
			expires.innerHTML = "Never";
		}
		row.appendChild(expires);

		var options = document.createElement("td");
		var scopesLink = document.createElement("a");
		scopesLink.id = "scopes-app-" + app.id;
		scopesLink.href = "#";
		scopesLink.innerHTML = "View Scopes";
		scopesLink.addEventListener("click", viewScopes);
		var separator = document.createElement("span");
		separator.innerHTML = " | ";
		var removeLink = document.createElement("a");
		removeLink.id = "revoke-app-" + app.id;
		removeLink.href = "#";
		removeLink.innerHTML = "Revoke";
		removeLink.addEventListener("click", revoke);
		options.appendChild(scopesLink);
		options.appendChild(separator);
		options.appendChild(removeLink);
		row.appendChild(options);

		return row;
	};

	// Creates a row in the API keys table
	var createKeyRow = function(key, alt)
	{
		var row = document.createElement("tr");
		if (alt)
			row.className = elements.lmcRowAlt;
		else
			row.className = elements.lmcRow;

		var label = document.createElement("td");
		label.innerHTML = key.label;
		row.appendChild(label);

		var prefix = document.createElement("td");
		prefix.innerHTML = key.token + "...";
		row.appendChild(prefix);

		var created = document.createElement("td");
		var created1 = document.createElement("span");
		var now = new Date();
		var createDt = new Date(key.created + "Z");
		created1.innerHTML = timeString(now - createDt, true);
		var created2 = document.createElement("span");
		created2.className = elements.info;
		created2.innerHTML = createDt.toLocaleString();
		created.appendChild(created1);
		created.appendChild(document.createElement("br"));
		created.appendChild(created2);
		row.appendChild(created);

		var expires = document.createElement("td");
		if (key.expiry) {
			var expires1 = document.createElement("span");
			var expireDt = new Date(key.expiry + "Z");
			expires1.innerHTML = timeString(now - expireDt, true);
			var expires2 = document.createElement("span");
			expires2.className = elements.info;
			expires2.innerHTML = expireDt.toLocaleString();
			expires.appendChild(expires1);
			expires.appendChild(document.createElement("br"));
			expires.appendChild(expires2);
		} else {
			expires.innerHTML = "Never";
		}
		row.appendChild(expires);

		var options = document.createElement("td");
		var scopesLink = document.createElement("a");
		scopesLink.id = "scopes-key-" + key.id;
		scopesLink.href = "#";
		scopesLink.innerHTML = "View Scopes";
		scopesLink.addEventListener("click", viewScopes);
		var separator = document.createElement("span");
		separator.innerHTML = " | ";
		var renameLink = document.createElement("a");
		renameLink.id = "rename-" + key.id;
		renameLink.href = "#";
		renameLink.innerHTML = "Rename";
		renameLink.addEventListener("click", handleRename);
		var removeLink = document.createElement("a");
		removeLink.id = "revoke-key-" + key.id;
		removeLink.href = "#";
		removeLink.innerHTML = "Revoke";
		removeLink.addEventListener("click", revoke);
		options.appendChild(scopesLink);
		options.appendChild(separator);
		options.appendChild(renameLink);
		options.appendChild(separator.cloneNode(true));
		options.appendChild(removeLink);
		row.appendChild(options);

		return row;
	};

	// Callback for authorized apps API call
	var displayApps = function(response)
	{
		data.apps = data.apps.concat(response.data);

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

		// Add apps to table
		for (var i = 0; i < data.apps.length; i++)
			ui.authorizedApps.appendChild(createAppRow(data.apps[i], i % 2));
	};

	// Callback for ssh keys API call
	var displayKeys = function(response)
	{
		data.keys = data.keys.concat(response.data);

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


		// Add keys to table
		for (var i = 0; i < data.keys.length; i++)
			ui.apiKeys.appendChild(createKeyRow(data.keys[i], i % 2));
	};

	// Handler for renaming an API token
	var handleRename = function(event)
	{
		var id = event.currentTarget.id.split("-")[1];
		var name = prompt("Rename API token:");
		if (!name)
			return;

		var req = {
			"label": name
		};

		apiPut("/profile/tokens/" + id, req, function(response)
		{
			location.reload();
		});
	};

	// Revokes an API key or app
	var revoke = function(event)
	{
		var info = event.currentTarget.id.split("-");
		var isApp = (info[1] == "app");
		var id = parseInt(info[2]);
		var message = "Are you sure you want to remove this API key?";
		var url = "/profile/tokens/";
		if (isApp) {
			message = "Are you sure you want to revoke access for this app?";
			url = "/profile/apps/";
		}

		if (!confirm(message))
			return;

		apiDelete(url + id, function(response)
		{
			location.reload();
		});
	};

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

		setupHeader();

		// Get element references
		ui.apiKeys = document.getElementById(elements.apiKeys);
		ui.authorizedApps = document.getElementById(elements.authorizedApps);

		// Get data from API
		apiGet("/profile/tokens", displayKeys, null);
		apiGet("/profile/apps", displayApps, null);
	};

	// Display the scopes for a given app or key
	var viewScopes = function(event)
	{
		var info = event.currentTarget.id.split("-");
		var isApp = (info[1] == "app");
		var id = parseInt(info[2]);
		var searchArr = data.keys;
		if (isApp)
			searchArr = data.apps;

		var scopeStr = "";
		for (var i = 0; i < searchArr.length; i++) {
			if (searchArr[i].id == id) {
				scopeStr = searchArr[i].scopes;
				break;
			}
		}

		var scopes = [];
		if (scopeStr == "*") {
			for (var scope in oauthScopes)
				scopes.push(scope + ":read_write");
		} else {
			scopes = scopeStr.split(" ");
		}

		var alertStr = "";
		for (var i = 0; i < scopes.length; i++) {
			var scopeInfo = scopes[i].split(":");
			alertStr += oauthScopes[scopeInfo[0]] + " - ";
			if (scopeInfo[1] == "read_write")
				alertStr += "Read/Write\n";
			else
				alertStr += "Read Only\n";
		}

		alert(alertStr);
	};

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