var ssoUI = {
    init: function init() {
        var params    = [];
        this.errorFlg = false;
        this.site_url = 'https://accounts.indianexpress.com';
        this.api_host = this.site_url + '/api/v2';
        this.headerPayload = {
            "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
            "X-API-KEY": "ydDxstlJCp7a0CwCKqkwtpeptJidV6fkCnaxj51xYN7jAsgdoDtZgwVsML3Zfs9ktc9j7nlgfMEdyP3m3llagEsRAxF6rtTYeCSZ7jpg+x/gTX3htkBYttdr38Y5W2zdMN0eHyt+Qje4AWI6xog1gsJelA90VNtnm3XH3JN1LGbP3BbPUdSShWhoTYvKr9xiktc1s9r98LNI9CSBFtnA/lUZi1UzC3oQvPUmqwFzyvyb25tRKse6GVBZifWibZ1LBAgqDws9YJGG9gfAbsQKvdGeI3Fw7FJAlYkaFknq5Lmgyi9ej05/X8nMzS+L3mf1OTPuMXNOmab2W+umCrJDZg=="
        };
        if (typeof IESSO === "undefined" || IESSO === null || IESSO == '') {
            console.error('SSO sdk initialisation failed.');
            this.errorFlg = true;
        } else {
            params = IESSO.pop();
            this.qparams = ssoUI.QParams();
        }
        this.ssoDivObj = document.getElementsByClassName('iesso-login');
        if (typeof this.ssoDivObj === "undefined" || this.ssoDivObj === null || this.ssoDivObj == '') {
            console.error('SSO div tag not found.');
            this.errorFlg = true;
        }
        this.subBanDiv = document.getElementsByClassName('epaper-banner');
        this.subcribedbanner = true;
        if (typeof this.subBanDiv === "undefined" || this.subBanDiv === null || this.subBanDiv.length < 1) {
            this.subcribedbanner = false;
        }
        this.client_id = ssoUI.ValidParams(params.client_id);
        this.client_secret = ssoUI.ValidParams(params.client_secret);
        this.response_type = ssoUI.ValidParams('code');
        this.redirect_uri = ssoUI.ValidParams(params.redirect_uri);
        this.request_uri = encodeURIComponent( ssoUI.ValidParams(params.request_uri) );
        this.state = ssoUI.randomState().toString();
        //auto renewal
        if (false !== this.qparams.hasOwnProperty('renewal') && '1' === this.qparams.renewal ) {
            this.subrenewal = true;
        } else {
            this.subrenewal = false;
        }
        this.auto_renwal = ssoUI.qparams
        //debugger
        if (false !== this.qparams.hasOwnProperty('ack') && this.qparams.ack.length > 50) {
            this.access_token = this.qparams.ack;
        } else {
            this.access_token = ssoUI.CookieRead('access_token');
        }
        this.fingerprint_uid = ssoUI.getFingerprint();

        if (this.fingerprint_uid !== '' && typeof this.fingerprint_uid !== "undefined" && this.fingerprint_uid !== null && this.errorFlg === false && this.ssoDivObj.length > 0) {
            ssoUI.ajaxRequest('GET', this.api_host + '/sso/user/?user_fingerprint=' + this.fingerprint_uid, this.headerPayload, '', 'fingerprint');
        } else if (this.access_token !== '' && typeof this.access_token !== "undefined" && this.access_token !== null && this.errorFlg === false && this.ssoDivObj.length > 0) {
                this.headerPayload.Authorization = "Bearer " + this.access_token;
                ssoUI.ajaxRequest('GET', this.api_host + '/sso/user/', this.headerPayload, '', '');
                ssoUI.ProfileUI();
                ssoUI.IeLoginBtn();
        } else {
                ssoUI.LoginUI(); // show login button
                ssoUI.IeLoginBtn();
                if (this.subcribedbanner) {
                    document.getElementById('subscribed_banner').style.display = 'none';
                    document.getElementById('non_subscribed_banner').style.display = 'block';
                }
            }
    },
    ValidParams: function ValidParams(v) {
        return typeof v !== "undefined" && v !== null && v !== '' ? v.toString() : '';
    },
    QParams: function QParams() {
        var qp, arr;
        if (/code|token|error/.test(window.location.hash)) {
            qp = location.hash.substring(1);
        } else {
            qp = location.search.substring(1);
        }

        arr = qp.split("&");
        arr.forEach(function (v, i, _arr) {
            if (v.indexOf('=') != -1) {
                _arr[i] = '"' + v.replace('=', '":"') + '"';
            } else {
                _arr[i] = '';
            }
        });
        qp = qp ? JSON.parse('{' + arr.join() + '}', function (key, value) {
            return key === "" ? value : decodeURIComponent(value);
        }) : {};
        return qp;
    },
    qstring: function qstring() {
        var query = "?client_id=" + this.client_id + "&response_type=" + this.response_type + "&redirect_uri=" + this.redirect_uri + "&request_uri=" + this.request_uri + "&state=" + this.state;
        return query;
    },
    ProfileUI: function ProfileUI() {
        if ( this.subrenewal ) {
                var q = ssoUI.qstring();
                location.href = this.site_url + "/account/order/" + q;
        }
        var txtHTML = '<div id="sso-ui" class="sso-ui"></div><a onClick="javascript:ssoUI.ProfileEV();" class="sso-link"><button class="account-button" type="button">My Account</button></a></div>';
        for (var x = 0; x < this.ssoDivObj.length; x++) {
            this.ssoDivObj[x].innerHTML = '';
            this.ssoDivObj[x].innerHTML = txtHTML;
        }
        return true;
    },
    ProfileEV: function ProfileEV() {
        localStorage.removeItem('user_hit');
        window.open(this.site_url + '/account/', "_blank");
    },
    LoginUI: function LoginUI() {
        var q = ssoUI.qstring();
        if ( this.subrenewal ) {
            location.href = this.site_url + "/oauth2/authorize/" + q;
        }
        var txtHTML = '<div id="sso-ui" class="sso-ui"></div><a onClick="javascript:ssoUI.LoginEV();" class="sso-link"><button class="login-button" type="button">Sign in</button></a></div>';
        for (var x = 0; x < this.ssoDivObj.length; x++) {
            this.ssoDivObj[x].innerHTML = '';
            this.ssoDivObj[x].innerHTML = txtHTML;
        }
    },
    LoginEV: function LoginEV(e) {
        if ('undefined' !== typeof e) {
            if ('m-links-btm__link-block' === e.className) {
                this.subscriptionGaEvent('Subscription Activity', 'Login', '', '');
            }
        }
        if ('undefined' !== typeof clevertap) {
            clevertap.event.push("EXU_Login_Initiated");
        }
        var q = ssoUI.qstring();
        this.access_token = ssoUI.CookieRead('access_token');
        if (this.access_token !== '' && typeof this.access_token !== "undefined" && this.access_token !== null && this.errorFlg === false) {
            location.href = window.location.href;
        } else {
            location.href = this.site_url + "/oauth2/authorize/" + q;
        }
    },
    CookieWrite: function CookieWrite(name, value, days, domain, path) {
        var date = new Date();
        days = days || 730; // two years
        path = path || '/';
        date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
        var expires = '; expires=' + date.toGMTString();
        var cookieValue = name + '=' + value + expires + '; path=' + path;
        if (domain) {
            cookieValue += '; domain=' + domain;
        }
        document.cookie = cookieValue;
    },
    CookieRead: function CookieRead(name) {
        var allCookie = '' + document.cookie;
        var index = allCookie.indexOf(name);
        if (name === undefined || name === '' || index === -1) return '';
        var ind1 = allCookie.indexOf(';', index);
        if (ind1 == -1) ind1 = allCookie.length;
        var checkCookieValue = unescape(allCookie.substring(index + name.length + 1, ind1));
        if ('access_token' === name && checkCookieValue.length < 50) return '';
        return checkCookieValue;
    },
    CookieRemove: function CookieRemove(name) {
        if ('' !== name && this.CookieRead(name)) {
            var del_domain_name = ( 'exp_token_jwt' === name ) ? ssoUI.getParentDomainName() : window.location.hostname;
            document.cookie = name + '=;path=/;max-age=-1; domain=' + del_domain_name;
            //this.CookieWrite(name, '', -1, '', '/');
        }
    },
    ajaxRequest: function ajaxRequest(method, url, headers, params, act_type) {
        var request = new XMLHttpRequest();
        request.open(method, url, true);
        for ( var key in headers ) {
            if ( headers.hasOwnProperty( key ) ) { 
                request.setRequestHeader( key, headers[key] );
            }
        }
        
        request.onload = function () {
            if (request.status >= 200 && request.status < 400) {
                var obj = JSON.parse(this.responseText);
                var parsed_info = '';
                var not_valid   = [];
                var parent_domain = ssoUI.getParentDomainName();
                if (obj.hasOwnProperty("token") && '' !== obj.token) {
                    // user login with jwt token!
                    if ('' != act_type) {
                        switch (act_type) {
                            case 'fingerprint':
                                ssoUI.CookieWrite('access_token', obj.token, 30, window.location.hostname, '/');
                                ssoUI.CookieWrite('oauth_user', JSON.stringify(obj.data.user), 1, window.location.hostname, '/');
                                ssoUI.ProfileUI();
                                ssoUI.IeLoginBtn();
                                break;
                            case 'redirect':
                                ssoUI.CookieWrite('access_token', obj.token, 30, window.location.hostname, '/');
                                ssoUI.CookieWrite('exp_token_jwt', obj.token, 1, parent_domain, '/');
                                ssoUI.CookieWrite('oauth_user', JSON.stringify(obj.data.user), 1, window.location.hostname, '/');
                                var check_request    = ssoUI.qparams.request_uri;
                                if( check_request.search('express-plus') > 0 ) {
                                     parsed_info = obj.data.user;
                                     not_valid   = ['created', 'authenticated', 'pending', 'halted', 'active'];
                                    if (typeof parsed_info.plan_status != 'undefined' && not_valid.indexOf(parsed_info.plan_status) > -1) {
                                        location.href = '/express-plus/today-newsstand/';
                                    } else {
                                        if ('1' !== ssoUI.CookieRead('subscription_popup')) {
                                            location.href = '/express-plus/subscription-plan/#goofy';
                                        } else {
                                            location.href = '/express-plus/subscription-plan/';
                                        }
                                    }
                                } else {
                                    location.href = check_request; // redirect to request uri
                                }
                            return false;
                            default:
                                ssoUI.CookieWrite('oauth_user', JSON.stringify(obj.data.user), 1, window.location.hostname, '/');
                                ssoUI.CookieWrite('exp_token_jwt', obj.token, 1, parent_domain, '/');
                                ssoUI.ProfileUI();
                                if (ssoUI.subcribedbanner) {
                                     parsed_info = obj.data.user;
                                     not_valid   = ['created', 'authenticated', 'pending', 'halted', 'active'];
                                    if (typeof parsed_info.plan_status != 'undefined' && not_valid.indexOf(parsed_info.plan_status) > -1) {
                                        document.getElementById('subscribed_banner').style.display = 'block';
                                        document.getElementById('non_subscribed_banner').style.display = 'none';
                                    } else {
                                        document.getElementById('subscribed_banner').style.display = 'none';
                                        document.getElementById('non_subscribed_banner').style.display = 'block';
                                    }
                                }
                        }
                    } else {

                        if (false !== ssoUI.qparams.hasOwnProperty('ack') && ssoUI.qparams.ack.length > 50) {
                            ssoUI.CookieWrite('access_token', obj.token, 30, window.location.hostname, '/');
                            ssoUI.CookieWrite('exp_token_jwt', obj.token, 1, parent_domain, '/');
                        }
                        ssoUI.CookieWrite('oauth_user', JSON.stringify(obj.data.user), 1, window.location.hostname, '/');
                        if (ssoUI.subcribedbanner) {
                             parsed_info = obj.data.user;
                             not_valid   = ['created', 'authenticated', 'pending', 'halted', 'active'];
                            if (typeof parsed_info.plan_status != 'undefined' && not_valid.indexOf(parsed_info.plan_status) > -1) {
                                document.getElementById('subscribed_banner').style.display = 'block';
                                document.getElementById('non_subscribed_banner').style.display = 'none';
                            } else {
                                document.getElementById('subscribed_banner').style.display = 'none';
                                document.getElementById('non_subscribed_banner').style.display = 'block';
                            }
                        }
                        ssoUI.ProfileUI();
                    }
                } else {
                    // delete jwt token cookie
                    if ('' != act_type) {
                        switch (act_type) {
                            case 'redirect':
                                location.href = ssoUI.qparams.request_uri; // redirect to request uri
                                return false;
                            default:
                                ssoUI.CookieRemove('access_token');
                                ssoUI.CookieRemove('oauth_user');
                                ssoUI.CookieRemove('exp_token_jwt');
                                ssoUI.LoginUI();
                        }
                    } else {
                        ssoUI.CookieRemove('access_token');
                        ssoUI.CookieRemove('oauth_user');
                        ssoUI.CookieRemove('exp_token_jwt');
                        ssoUI.LoginUI();
                    }
                }
            } else {
                // We reached our target server, but it returned an error
                ssoUI.CookieRemove('access_token');
                ssoUI.CookieRemove('oauth_user');
                ssoUI.CookieRemove('exp_token_jwt');
                ssoUI.LoginUI();
                ssoUI.IeLoginBtn();
            }
        };
        request.onerror = function () {
            // There was a connection error of some sort
            ssoUI.CookieRemove('access_token');
            ssoUI.CookieRemove('oauth_user');
            ssoUI.CookieRemove('exp_token_jwt');
            ssoUI.LoginUI();
        };
        request.send(params);
    },
    GetAjax: function GetAjax() {
        //Do nothing at this time.
        ssoUI.CookieRemove('access_token');
        ssoUI.CookieRemove('oauth_user');
        ssoUI.CookieRemove('exp_token_jwt');
        ssoUI.LoginUI();
    },
    randomState: function randomState() {
        var sizestate        = 6;
        var State            = '';
        var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
        var charactersLength = characters.length;
        for ( var i = 0; i < sizestate; i++ ) {
           State += characters.charAt(Math.floor(Math.random() * charactersLength));
        }
        if (ssoUI.CookieRead('ssostate')) {
            State = ssoUI.CookieRead('ssostate');
        } else {
            ssoUI.CookieWrite('ssostate', State, 1, window.location.hostname, '/');
        }
        return State;
    },
    oAuth2Redirect: function oAuth2Redirect() {
        var isValid, sentState;
        var client_id = this.client_id;
        var client_secret = this.client_secret;
        var redirect_uri = ssoUI.redirect_uri;
        var code = ssoUI.qparams.code;
        var state = ssoUI.qparams.state;
        var request_uri = ssoUI.qparams.request_uri;
        var params = 'code=' + code + '&client_id=' + client_id + '&client_secret=' + client_secret + '&grant_type=authorization_code&scope=userinfo&redirect_uri=' + redirect_uri;
        sentState = ssoUI.CookieRead('ssostate');
        console.log('cookie deleted: ssostate' + ssoUI.CookieRemove('ssostate'));
        isValid = state === sentState;
        if (!isValid) {
            console.log("Authorization may be unsafe, passed state was changed in server Passed state wasn't returned from auth server");
            if (request_uri.search('subscription-plan') > -1) {
                window.location.href = '/express-plus/today-newsstand/'; // redirect to request uri
            } else {
                window.location.href = request_uri; // redirect to request uri
            }
            return false;
        }
        if (typeof code !== "undefined" && code !== null && code != '' && typeof request_uri !== "undefined" && request_uri !== null && request_uri != '') {
            ssoUI.ajaxRequest('POST', this.site_url + '/oauth2/authorize/token', this.headerPayload, params, 'redirect');
        } else {
            alert("[Authorization failed]: no accessCode received from the server");
            window.location.href = request_uri; // redirect to request uri
            return false;
        }
        return false;
    },
    getFingerprint: function getFingerprint() {
        //        var fp = new Fingerprint({
        //            canvas: true,
        //            ie_activex: true,
        //            screen_resolution: true
        //        });
        var uid = '';
        return uid;
    },
    IeLoginBtn: function IeLoginBtn() {
        var login_link = document.getElementById("login_lnik");
        if (login_link) {
            var check_login_cookie = ssoUI.CookieRead('access_token');
            if (check_login_cookie !== '') {
                login_link.style.display = "none";
            } else {
                login_link.style.display = "block";
            }
        }
    },
    subscriptionListingCheck: function subscriptionListingCheck() {
        var oauth_user_info = this.CookieRead('oauth_user');
        if ('' !== oauth_user_info) {
            var parsed_info = JSON.parse(oauth_user_info);
            var not_valid = ['created', 'authenticated', 'pending', 'halted', 'active'];
            if (typeof parsed_info.plan_status != 'undefined' && not_valid.indexOf(parsed_info.plan_status) > -1) {
                this.subscriptionGaEvent('Subscription Activity', 'Epaper viewed', '', '');
                location.href = '/express-plus/today-newsstand/';
            } else {
                this.subscriptionGaEvent('Subscription Activity', 'Plans viewed', '', '');
                if ('1' !== this.CookieRead('subscription_popup')) {
                    location.href = '/express-plus/subscription-plan/#goofy';
                } else {
                    location.href = '/express-plus/subscription-plan/';
                }
            }
        } else {
            this.subscriptionGaEvent('Subscription Activity', 'Plans viewed', '', '');
            if ('1' !== this.CookieRead('subscription_popup')) {
                location.href = '/express-plus/subscription-plan/#goofy';
            } else {
                location.href = '/express-plus/subscription-plan/';
            }
        }
        return false;
    },
    subscriptionGaEvent: function subscriptionGaEvent(category, action, label, value) {
        if ('undefined' !== typeof ga) {
            ga('send', {
                  'hitType': 'event',
                  'eventCategory': category,
                  'eventAction': action,
                  'eventLabel': label,
                  'useBeacon': true,
                  'hitCallback': function() {
                    googleSent = true;
                  }
            });
        }
        return true;
    },
    trueSDKEvent: function trueSDKEvent( redirectURL ) {
            this.access_token = ssoUI.CookieRead( 'access_token' );
            if ( this.access_token !== '' && 'undefined' !== typeof this.access_token && null !== this.access_token && 'undefined' !== typeof redirectURL ) {
                    location.href = redirectURL;
            } else if ('undefined' !== typeof redirectURL ) {
                    location.href = this.site_url + "/?truesdk=1&request_uri=" + redirectURL;
            }
    },
    getParentDomainName: function getParentDomainName() {
        var alldomain = window.location.hostname;
        if( alldomain.indexOf('financialexpress') > -1 ) {
            return 'financialexpress.com';
        } else if ( alldomain.indexOf('indianexpress') > -1 ) {
            return 'indianexpress.com';
        } else {
            return alldomain;
        }
    }
};
ssoUI.init();