'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * Licensed Materials - Property of IBM
 * IBM Business Analytics (C) Copyright IBM Corp. 2019
 * US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */

/**
 * @class DomainValidator
 * @hideconstructor
 * @classdesc This class provides DomainValidator
 */
define([], function () {
	var DomainValidator = function () {
		function DomainValidator(configValue) {
			_classCallCheck(this, DomainValidator);

			this._validDomainListInitialized = false;
			this._validDomainList = null;
			this._validDomains = '';
			this.init(configValue);
		}

		DomainValidator.prototype.init = function init(configValue) {
			var _this = this;

			this._validDomainListInitialized = true;
			if (configValue && configValue !== 'myDefault') {
				this._validDomains = configValue;
				this._validDomainList = [];
				configValue.toLowerCase().split(',').forEach(function (host) {
					var hostAndPort = host.trim().split(':');
					var hostname = hostAndPort[0];
					var allowAllSubDomains = false,
					    allowFirstSubDomain = false;
					if (hostname.indexOf('*.') === 0) {
						allowAllSubDomains = true;
						allowFirstSubDomain = true;
						hostname = hostname.substring(2);
					} else if (hostname.indexOf('.') === 0) {
						allowFirstSubDomain = true;
						hostname = hostname.substring(1);
					}
					_this._validDomainList.push({
						hostname: hostname,
						port: hostAndPort[1],
						allowFirstSubDomain: allowFirstSubDomain,
						allowAllSubDomains: allowAllSubDomains
					});
				});
			}
		};

		DomainValidator.prototype.isAllowedDomain = function isAllowedDomain(url) {
			if (!url || !this._validDomainListInitialized) {
				return false;
			}

			if (!this._validDomainList) {
				//If a valid domain list has not been specified, then all domains are valid.
				return true;
			}

			var findHost = url.toLowerCase() + '/';
			var hostname = void 0,
			    port = void 0,
			    hasPort = false;
			if (findHost.indexOf('://') !== -1) {
				findHost = findHost.substring(findHost.indexOf('://') + 3);
				findHost = findHost.substring(0, findHost.indexOf('/'));

				if (findHost.indexOf('@') !== -1) {
					//If user info is present in the url, strip that out
					findHost = findHost.substring(findHost.indexOf('@') + 1);
				}

				findHost = findHost.split(':');
				hostname = findHost[0];
				port = findHost[1];
			} else {
				hostname = window.location.hostname;
				port = window.location.port;
			}
			hasPort = !!port;

			return !!this._validDomainList.find(function (validDomainEntry) {
				//Validate port if present in the valid domain entry.
				if (validDomainEntry.port && (!hasPort || validDomainEntry.port !== port)) {
					return false;
				}

				if (validDomainEntry.hostname === hostname) {
					return true;
				} else if (validDomainEntry.allowFirstSubDomain) {
					var baseHost = '.' + validDomainEntry.hostname;
					if (hostname.substring(hostname.length - baseHost.length, hostname.length) !== baseHost) {
						return false; //Host name doesn't start with the fixed portion.
					}
					if (validDomainEntry.allowAllSubDomains) {
						//If a * was used, then any additonal subdomains are valid.
						return true;
					}
					var subdomain = hostname.substring(0, hostname.length - baseHost.length);

					return subdomain.indexOf('.') === -1;
				}

				return false;
			});
		};

		DomainValidator.prototype.getAllowedDomains = function getAllowedDomains() {
			return this._validDomains;
		};

		DomainValidator.prototype.isAllowedProtocol = function isAllowedProtocol(url) {
			if (!url) {
				return false;
			}
			url = url.toLowerCase();

			// https:// is always allowed - i.e. both in pages served from HTTP or
			// 	HTTPS
			// // is always allowed as it will copy whichever protocol the
			// 	containing page is using
			// http:// is only allowed if the containing page is using HTTP as well
			if (url.indexOf('https://') === 0 || url.indexOf('//') === 0) {
				return true;
			}
			return false;
		};

		return DomainValidator;
	}();

	return DomainValidator;
});
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