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

(function()
{
	// Element names specific to this page
	elements.appImg = "app-img";
	elements.lmcRow = "lmc-tr1";
	elements.lmcRowAlt = "lmc-tr2";
	elements.oauthApps = "oauth-apps";

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

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

	// 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");
		label.innerHTML = app.label;
		row.appendChild(label);

		var access = document.createElement("td");
		if (app.public)
			access.innerHTML = "Public";
		else
			access.innerHTML = "Private";
		row.appendChild(access);

		var id = document.createElement("td");
		id.innerHTML = app.id;
		row.appendChild(id);

		var callback = document.createElement("td");
		callback.innerHTML = app.redirect_uri;
		row.appendChild(callback);

		var options = document.createElement("td");
		var editLink = document.createElement("a");
		editLink.href = "/account/oauth_apps/app?aid=" + app.id;
		editLink.innerHTML = "Edit";
		var separator = document.createElement("span");
		separator.innerHTML = " | ";
		var resetLink = document.createElement("a");
		resetLink.id = "reset-app-" + app.id;
		resetLink.href = "#";
		resetLink.innerHTML = "Reset Secret";
		resetLink.addEventListener("click", resetApp);
		var removeLink = document.createElement("a");
		removeLink.id = "remove-app-" + app.id;
		removeLink.href = "#";
		removeLink.innerHTML = "Remove";
		removeLink.addEventListener("click", removeApp);
		options.appendChild(editLink);
		options.appendChild(separator);
		options.appendChild(resetLink);
		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("/account/oauth-clients?page=" + (response.page + 1), displayApps, null);
			return;
		}

		// Redirect to add page if there are no OAuth apps
		if (!data.apps.length)
			location.href = "/account/oauth_apps/app?aid=0";

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

	// Handle removing an OAuth app
	var removeApp = function(event)
	{
		var id = event.currentTarget.id.split("-")[2];
		if (!confirm("Are you sure you want to permanently delete this app?"))
			return;

		apiDelete("/account/oauth-clients/" + id, function(response)
		{
			location.reload();
		});
	};

	// Handle resetting an OAuth app secret
	var resetApp = function(event)
	{
		var id = event.currentTarget.id.split("-")[2];
		if (!confirm("Are you sure you want to permanently reset the secret for this app?"))
			return;

		apiPost("/account/oauth-clients/" + id + "/reset-secret", {}, function(response)
		{
			alert("Here is your client secret! Store it securely, as it won't be shown again.\n" + response.secret);
		});
	};

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

		setupHeader();

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

		// Get data from API
		apiGet("/account/oauth-clients", displayApps, null);
	};

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