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

(function()
{
	// Element names specific to this page
	elements.balance = "balance";
	elements.balanceNegative = "balance-negative";
	elements.ccAmount = "cc-amount";
	elements.ccCharge = "cc-charge";
	elements.method = "method";

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

	// Static references to UI elements
	var ui = {};
	ui.balance = {};
	ui.ccAmount = {};
	ui.ccCharge = {};
	ui.method = {};

	// Callback for account details API call
	var displayAccount = function(response)
	{
		ui.balance.innerHTML = "$";
		if (response.balance < 0) {
			ui.balance.innerHTML += (-response.balance).toFixed(2) + " credit";
		} else if (response.balance > 0) {
			ui.balance.innerHTML += response.balance.toFixed(2) + " outstanding";
			ui.balance.className = elements.balanceNegative;
			if (response.balance < 5) {
				ui.ccAmount.min = response.balance.toFixed(2);
				ui.ccAmount.value = response.balance.toFixed(2);
			} else if (response.balance > 2000) {
				ui.ccAmount.max = Math.min(50000, response.balance.toFixed(2));
			}
		} else {
			ui.balance.innerHTML += response.balance.toFixed(2);
		}

		ui.ccCharge.disabled = false;
	};

	// Callback for payment methods API call
	var displayMethods = function(response)
	{
		data.methods = data.methods.concat(response.data);

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

		var typeNames = {
			"credit_card": "Credit Card",
			"google_pay": "Google Pay",
			"paypal": "PayPal"
		};

		for (var i = 0; i < data.methods.length; i++) {
			var option = document.createElement("option");
			option.value = data.methods[i].id;
			if (typeNames[data.methods[i].type])
				option.innerHTML = typeNames[data.methods[i].type];
			else
				option.innerHTML = data.methods[i].type;
			if (data.methods[i].type == "credit_card" || data.methods[i].type == "google_pay")
				option.innerHTML += ": " + data.methods[i].data.card_type + " ****" + data.methods[i].data.last_four;
			else if (data.methods[i].type == "paypal")
				option.innerHTML += ": " + data.methods[i].data.email;
			ui.method.appendChild(option);
			if (data.methods[i].is_default) {
				option.innerHTML += " (default)";
				ui.method.value = data.methods[i].id;
			}
		}

		ui.ccCharge.disabled = false;
	};

	// Click handler for CC charge button
	var handleCharge = function(event)
	{
		if (event.currentTarget.disabled)
			return;

		if (!confirm("Charge $" + parseInt(ui.ccAmount.value).toFixed(2) + " against your credit card?"))
			return;

		var req = {
			"payment_method_id": parseInt(ui.method.value),
			"usd": ui.ccAmount.value
		};

		apiPost("/account/payments", req, function(response)
		{
			location.href = "/account";
		});
	};

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

		setupHeader();

		// Get element references
		ui.balance = document.getElementById(elements.balance);
		ui.ccAmount = document.getElementById(elements.ccAmount);
		ui.ccCharge = document.getElementById(elements.ccCharge);
		ui.method = document.getElementById(elements.method);

		// Register event handlers
		ui.ccCharge.addEventListener("click", handleCharge);

		// Get data from API
		apiGet("/account", displayAccount, null);
		apiGet("/account/payment-methods", displayMethods, null);
	};

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