utils.js

/* eslint camelcase: "off", eqeqeq: "off" */
import Config from './config';
import { NpoPromise, Promise } from './promise-polyfill';
import { window } from './window';

// Maximum allowed session recording length
var MAX_RECORDING_MS = 24 * 60 * 60 * 1000; // 24 hours
// Maximum allowed value for minimum session recording length
var MAX_VALUE_FOR_MIN_RECORDING_MS = 8 * 1000; // 8 seconds

/*
 * Saved references to long variable names, so that closure compiler can
 * minimize file size.
 */

var ArrayProto = Array.prototype,
    FuncProto = Function.prototype,
    ObjProto = Object.prototype,
    slice = ArrayProto.slice,
    toString = ObjProto.toString,
    hasOwnProperty = ObjProto.hasOwnProperty,
    windowConsole = window.console,
    navigator = window.navigator,
    document = window.document,
    windowOpera = window.opera,
    screen = window.screen,
    userAgent = navigator.userAgent;

var nativeBind = FuncProto.bind,
    nativeForEach = ArrayProto.forEach,
    nativeIndexOf = ArrayProto.indexOf,
    nativeMap = ArrayProto.map,
    nativeIsArray = Array.isArray,
    breaker = {};

var _ = {
    trim: function(str) {
        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim#Polyfill
        return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
    }
};

// Console override
var console = {
    /** @type {function(...*)} */
    log: function() {
        if (Config.DEBUG && !_.isUndefined(windowConsole) && windowConsole) {
            try {
                windowConsole.log.apply(windowConsole, arguments);
            } catch (err) {
                _.each(arguments, function(arg) {
                    windowConsole.log(arg);
                });
            }
        }
    },
    /** @type {function(...*)} */
    warn: function() {
        if (Config.DEBUG && !_.isUndefined(windowConsole) && windowConsole) {
            var args = ['Mixpanel warning:'].concat(_.toArray(arguments));
            try {
                windowConsole.warn.apply(windowConsole, args);
            } catch (err) {
                _.each(args, function(arg) {
                    windowConsole.warn(arg);
                });
            }
        }
    },
    /** @type {function(...*)} */
    error: function() {
        if (Config.DEBUG && !_.isUndefined(windowConsole) && windowConsole) {
            var args = ['Mixpanel error:'].concat(_.toArray(arguments));
            try {
                windowConsole.error.apply(windowConsole, args);
            } catch (err) {
                _.each(args, function(arg) {
                    windowConsole.error(arg);
                });
            }
        }
    },
    /** @type {function(...*)} */
    critical: function() {
        if (!_.isUndefined(windowConsole) && windowConsole) {
            var args = ['Mixpanel error:'].concat(_.toArray(arguments));
            try {
                windowConsole.error.apply(windowConsole, args);
            } catch (err) {
                _.each(args, function(arg) {
                    windowConsole.error(arg);
                });
            }
        }
    }
};

var log_func_with_prefix = function(func, prefix) {
    return function() {
        arguments[0] = '[' + prefix + '] ' + arguments[0];
        return func.apply(console, arguments);
    };
};
var console_with_prefix = function(prefix) {
    return {
        log: log_func_with_prefix(console.log, prefix),
        error: log_func_with_prefix(console.error, prefix),
        critical: log_func_with_prefix(console.critical, prefix)
    };
};


var safewrap = function(f) {
    return function() {
        try {
            return f.apply(this, arguments);
        } catch (e) {
            console.critical('Implementation error. Please turn on debug and contact support@mixpanel.com.');
            if (Config.DEBUG){
                console.critical(e);
            }
        }
    };
};

var safewrapClass = function(klass) {
    var proto = klass.prototype;
    for (var func in proto) {
        if (typeof(proto[func]) === 'function') {
            proto[func] = safewrap(proto[func]);
        }
    }
};


// UNDERSCORE
// Embed part of the Underscore Library
_.bind = function(func, context) {
    var args, bound;
    if (nativeBind && func.bind === nativeBind) {
        return nativeBind.apply(func, slice.call(arguments, 1));
    }
    if (!_.isFunction(func)) {
        throw new TypeError();
    }
    args = slice.call(arguments, 2);
    bound = function() {
        if (!(this instanceof bound)) {
            return func.apply(context, args.concat(slice.call(arguments)));
        }
        var ctor = {};
        ctor.prototype = func.prototype;
        var self = new ctor();
        ctor.prototype = null;
        var result = func.apply(self, args.concat(slice.call(arguments)));
        if (Object(result) === result) {
            return result;
        }
        return self;
    };
    return bound;
};

/**
 * @param {*=} obj
 * @param {function(...*)=} iterator
 * @param {Object=} context
 */
_.each = function(obj, iterator, context) {
    if (obj === null || obj === undefined) {
        return;
    }
    if (nativeForEach && obj.forEach === nativeForEach) {
        obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
        for (var i = 0, l = obj.length; i < l; i++) {
            if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) {
                return;
            }
        }
    } else {
        for (var key in obj) {
            if (hasOwnProperty.call(obj, key)) {
                if (iterator.call(context, obj[key], key, obj) === breaker) {
                    return;
                }
            }
        }
    }
};

_.extend = function(obj) {
    _.each(slice.call(arguments, 1), function(source) {
        for (var prop in source) {
            if (source[prop] !== void 0) {
                obj[prop] = source[prop];
            }
        }
    });
    return obj;
};

_.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) === '[object Array]';
};

// from a comment on http://dbj.org/dbj/?p=286
// fails on only one very rare and deliberate custom object:
// var bomb = { toString : undefined, valueOf: function(o) { return "function BOMBA!"; }};
_.isFunction = function(f) {
    try {
        return /^\s*\bfunction\b/.test(f);
    } catch (x) {
        return false;
    }
};

_.isArguments = function(obj) {
    return !!(obj && hasOwnProperty.call(obj, 'callee'));
};

_.toArray = function(iterable) {
    if (!iterable) {
        return [];
    }
    if (iterable.toArray) {
        return iterable.toArray();
    }
    if (_.isArray(iterable)) {
        return slice.call(iterable);
    }
    if (_.isArguments(iterable)) {
        return slice.call(iterable);
    }
    return _.values(iterable);
};

_.map = function(arr, callback, context) {
    if (nativeMap && arr.map === nativeMap) {
        return arr.map(callback, context);
    } else {
        var results = [];
        _.each(arr, function(item) {
            results.push(callback.call(context, item));
        });
        return results;
    }
};

_.keys = function(obj) {
    var results = [];
    if (obj === null) {
        return results;
    }
    _.each(obj, function(value, key) {
        results[results.length] = key;
    });
    return results;
};

_.values = function(obj) {
    var results = [];
    if (obj === null) {
        return results;
    }
    _.each(obj, function(value) {
        results[results.length] = value;
    });
    return results;
};

_.include = function(obj, target) {
    var found = false;
    if (obj === null) {
        return found;
    }
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) {
        return obj.indexOf(target) != -1;
    }
    _.each(obj, function(value) {
        if (found || (found = (value === target))) {
            return breaker;
        }
    });
    return found;
};

_.includes = function(str, needle) {
    return str.indexOf(needle) !== -1;
};

// Underscore Addons
_.inherit = function(subclass, superclass) {
    subclass.prototype = new superclass();
    subclass.prototype.constructor = subclass;
    subclass.superclass = superclass.prototype;
    return subclass;
};

_.isObject = function(obj) {
    return (obj === Object(obj) && !_.isArray(obj));
};

_.isEmptyObject = function(obj) {
    if (_.isObject(obj)) {
        for (var key in obj) {
            if (hasOwnProperty.call(obj, key)) {
                return false;
            }
        }
        return true;
    }
    return false;
};

_.isUndefined = function(obj) {
    return obj === void 0;
};

_.isString = function(obj) {
    return toString.call(obj) == '[object String]';
};

_.isDate = function(obj) {
    return toString.call(obj) == '[object Date]';
};

_.isNumber = function(obj) {
    return toString.call(obj) == '[object Number]';
};

_.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
};

_.encodeDates = function(obj) {
    _.each(obj, function(v, k) {
        if (_.isDate(v)) {
            obj[k] = _.formatDate(v);
        } else if (_.isObject(v)) {
            obj[k] = _.encodeDates(v); // recurse
        }
    });
    return obj;
};

_.timestamp = function() {
    Date.now = Date.now || function() {
        return +new Date;
    };
    return Date.now();
};

_.formatDate = function(d) {
    // YYYY-MM-DDTHH:MM:SS in UTC
    function pad(n) {
        return n < 10 ? '0' + n : n;
    }
    return d.getUTCFullYear() + '-' +
        pad(d.getUTCMonth() + 1) + '-' +
        pad(d.getUTCDate()) + 'T' +
        pad(d.getUTCHours()) + ':' +
        pad(d.getUTCMinutes()) + ':' +
        pad(d.getUTCSeconds());
};

_.strip_empty_properties = function(p) {
    var ret = {};
    _.each(p, function(v, k) {
        if (_.isString(v) && v.length > 0) {
            ret[k] = v;
        }
    });
    return ret;
};

/*
 * this function returns a copy of object after truncating it.  If
 * passed an Array or Object it will iterate through obj and
 * truncate all the values recursively.
 */
_.truncate = function(obj, length) {
    var ret;

    if (typeof(obj) === 'string') {
        ret = obj.slice(0, length);
    } else if (_.isArray(obj)) {
        ret = [];
        _.each(obj, function(val) {
            ret.push(_.truncate(val, length));
        });
    } else if (_.isObject(obj)) {
        ret = {};
        _.each(obj, function(val, key) {
            ret[key] = _.truncate(val, length);
        });
    } else {
        ret = obj;
    }

    return ret;
};

_.JSONEncode = (function() {
    return function(mixed_val) {
        var value = mixed_val;
        var quote = function(string) {
            var escapable = /[\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; // eslint-disable-line no-control-regex
            var meta = { // table of character substitutions
                '\b': '\\b',
                '\t': '\\t',
                '\n': '\\n',
                '\f': '\\f',
                '\r': '\\r',
                '"': '\\"',
                '\\': '\\\\'
            };

            escapable.lastIndex = 0;
            return escapable.test(string) ?
                '"' + string.replace(escapable, function(a) {
                    var c = meta[a];
                    return typeof c === 'string' ? c :
                        '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                }) + '"' :
                '"' + string + '"';
        };

        var str = function(key, holder) {
            var gap = '';
            var indent = '    ';
            var i = 0; // The loop counter.
            var k = ''; // The member key.
            var v = ''; // The member value.
            var length = 0;
            var mind = gap;
            var partial = [];
            var value = holder[key];

            // If the value has a toJSON method, call it to obtain a replacement value.
            if (value && typeof value === 'object' &&
                typeof value.toJSON === 'function') {
                value = value.toJSON(key);
            }

            // What happens next depends on the value's type.
            switch (typeof value) {
                case 'string':
                    return quote(value);

                case 'number':
                    // JSON numbers must be finite. Encode non-finite numbers as null.
                    return isFinite(value) ? String(value) : 'null';

                case 'boolean':
                case 'null':
                    // If the value is a boolean or null, convert it to a string. Note:
                    // typeof null does not produce 'null'. The case is included here in
                    // the remote chance that this gets fixed someday.

                    return String(value);

                case 'object':
                    // If the type is 'object', we might be dealing with an object or an array or
                    // null.
                    // Due to a specification blunder in ECMAScript, typeof null is 'object',
                    // so watch out for that case.
                    if (!value) {
                        return 'null';
                    }

                    // Make an array to hold the partial results of stringifying this object value.
                    gap += indent;
                    partial = [];

                    // Is the value an array?
                    if (toString.apply(value) === '[object Array]') {
                        // The value is an array. Stringify every element. Use null as a placeholder
                        // for non-JSON values.

                        length = value.length;
                        for (i = 0; i < length; i += 1) {
                            partial[i] = str(i, value) || 'null';
                        }

                        // Join all of the elements together, separated with commas, and wrap them in
                        // brackets.
                        v = partial.length === 0 ? '[]' :
                            gap ? '[\n' + gap +
                            partial.join(',\n' + gap) + '\n' +
                            mind + ']' :
                                '[' + partial.join(',') + ']';
                        gap = mind;
                        return v;
                    }

                    // Iterate through all of the keys in the object.
                    for (k in value) {
                        if (hasOwnProperty.call(value, k)) {
                            v = str(k, value);
                            if (v) {
                                partial.push(quote(k) + (gap ? ': ' : ':') + v);
                            }
                        }
                    }

                    // Join all of the member texts together, separated with commas,
                    // and wrap them in braces.
                    v = partial.length === 0 ? '{}' :
                        gap ? '{' + partial.join(',') + '' +
                        mind + '}' : '{' + partial.join(',') + '}';
                    gap = mind;
                    return v;
            }
        };

        // Make a fake root object containing our value under the key of ''.
        // Return the result of stringifying the value.
        return str('', {
            '': value
        });
    };
})();

/**
 * From https://github.com/douglascrockford/JSON-js/blob/master/json_parse.js
 * Slightly modified to throw a real Error rather than a POJO
 */
_.JSONDecode = (function() {
    var at, // The index of the current character
        ch, // The current character
        escapee = {
            '"': '"',
            '\\': '\\',
            '/': '/',
            'b': '\b',
            'f': '\f',
            'n': '\n',
            'r': '\r',
            't': '\t'
        },
        text,
        error = function(m) {
            var e = new SyntaxError(m);
            e.at = at;
            e.text = text;
            throw e;
        },
        next = function(c) {
            // If a c parameter is provided, verify that it matches the current character.
            if (c && c !== ch) {
                error('Expected \'' + c + '\' instead of \'' + ch + '\'');
            }
            // Get the next character. When there are no more characters,
            // return the empty string.
            ch = text.charAt(at);
            at += 1;
            return ch;
        },
        number = function() {
            // Parse a number value.
            var number,
                string = '';

            if (ch === '-') {
                string = '-';
                next('-');
            }
            while (ch >= '0' && ch <= '9') {
                string += ch;
                next();
            }
            if (ch === '.') {
                string += '.';
                while (next() && ch >= '0' && ch <= '9') {
                    string += ch;
                }
            }
            if (ch === 'e' || ch === 'E') {
                string += ch;
                next();
                if (ch === '-' || ch === '+') {
                    string += ch;
                    next();
                }
                while (ch >= '0' && ch <= '9') {
                    string += ch;
                    next();
                }
            }
            number = +string;
            if (!isFinite(number)) {
                error('Bad number');
            } else {
                return number;
            }
        },

        string = function() {
            // Parse a string value.
            var hex,
                i,
                string = '',
                uffff;
            // When parsing for string values, we must look for " and \ characters.
            if (ch === '"') {
                while (next()) {
                    if (ch === '"') {
                        next();
                        return string;
                    }
                    if (ch === '\\') {
                        next();
                        if (ch === 'u') {
                            uffff = 0;
                            for (i = 0; i < 4; i += 1) {
                                hex = parseInt(next(), 16);
                                if (!isFinite(hex)) {
                                    break;
                                }
                                uffff = uffff * 16 + hex;
                            }
                            string += String.fromCharCode(uffff);
                        } else if (typeof escapee[ch] === 'string') {
                            string += escapee[ch];
                        } else {
                            break;
                        }
                    } else {
                        string += ch;
                    }
                }
            }
            error('Bad string');
        },
        white = function() {
            // Skip whitespace.
            while (ch && ch <= ' ') {
                next();
            }
        },
        word = function() {
            // true, false, or null.
            switch (ch) {
                case 't':
                    next('t');
                    next('r');
                    next('u');
                    next('e');
                    return true;
                case 'f':
                    next('f');
                    next('a');
                    next('l');
                    next('s');
                    next('e');
                    return false;
                case 'n':
                    next('n');
                    next('u');
                    next('l');
                    next('l');
                    return null;
            }
            error('Unexpected "' + ch + '"');
        },
        value, // Placeholder for the value function.
        array = function() {
            // Parse an array value.
            var array = [];

            if (ch === '[') {
                next('[');
                white();
                if (ch === ']') {
                    next(']');
                    return array; // empty array
                }
                while (ch) {
                    array.push(value());
                    white();
                    if (ch === ']') {
                        next(']');
                        return array;
                    }
                    next(',');
                    white();
                }
            }
            error('Bad array');
        },
        object = function() {
            // Parse an object value.
            var key,
                object = {};

            if (ch === '{') {
                next('{');
                white();
                if (ch === '}') {
                    next('}');
                    return object; // empty object
                }
                while (ch) {
                    key = string();
                    white();
                    next(':');
                    if (Object.hasOwnProperty.call(object, key)) {
                        error('Duplicate key "' + key + '"');
                    }
                    object[key] = value();
                    white();
                    if (ch === '}') {
                        next('}');
                        return object;
                    }
                    next(',');
                    white();
                }
            }
            error('Bad object');
        };

    value = function() {
        // Parse a JSON value. It could be an object, an array, a string,
        // a number, or a word.
        white();
        switch (ch) {
            case '{':
                return object();
            case '[':
                return array();
            case '"':
                return string();
            case '-':
                return number();
            default:
                return ch >= '0' && ch <= '9' ? number() : word();
        }
    };

    // Return the json_parse function. It will have access to all of the
    // above functions and variables.
    return function(source) {
        var result;

        text = source;
        at = 0;
        ch = ' ';
        result = value();
        white();
        if (ch) {
            error('Syntax error');
        }

        return result;
    };
})();

_.base64Encode = function(data) {
    var b64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
    var o1, o2, o3, h1, h2, h3, h4, bits, i = 0,
        ac = 0,
        enc = '',
        tmp_arr = [];

    if (!data) {
        return data;
    }

    data = _.utf8Encode(data);

    do { // pack three octets into four hexets
        o1 = data.charCodeAt(i++);
        o2 = data.charCodeAt(i++);
        o3 = data.charCodeAt(i++);

        bits = o1 << 16 | o2 << 8 | o3;

        h1 = bits >> 18 & 0x3f;
        h2 = bits >> 12 & 0x3f;
        h3 = bits >> 6 & 0x3f;
        h4 = bits & 0x3f;

        // use hexets to index into b64, and append result to encoded string
        tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
    } while (i < data.length);

    enc = tmp_arr.join('');

    switch (data.length % 3) {
        case 1:
            enc = enc.slice(0, -2) + '==';
            break;
        case 2:
            enc = enc.slice(0, -1) + '=';
            break;
    }

    return enc;
};

_.utf8Encode = function(string) {
    string = (string + '').replace(/\r\n/g, '\n').replace(/\r/g, '\n');

    var utftext = '',
        start,
        end;
    var stringl = 0,
        n;

    start = end = 0;
    stringl = string.length;

    for (n = 0; n < stringl; n++) {
        var c1 = string.charCodeAt(n);
        var enc = null;

        if (c1 < 128) {
            end++;
        } else if ((c1 > 127) && (c1 < 2048)) {
            enc = String.fromCharCode((c1 >> 6) | 192, (c1 & 63) | 128);
        } else {
            enc = String.fromCharCode((c1 >> 12) | 224, ((c1 >> 6) & 63) | 128, (c1 & 63) | 128);
        }
        if (enc !== null) {
            if (end > start) {
                utftext += string.substring(start, end);
            }
            utftext += enc;
            start = end = n + 1;
        }
    }

    if (end > start) {
        utftext += string.substring(start, string.length);
    }

    return utftext;
};

_.UUID = function() {
    try {
        // use native Crypto API when available
        return window['crypto']['randomUUID']();
    } catch (err) {
        // fall back to generating our own UUID
        // based on https://gist.github.com/scwood/3bff42cc005cc20ab7ec98f0d8e1d59d
        var uuid = new Array(36);
        for (var i = 0; i < 36; i++) {
            uuid[i] = Math.floor(Math.random() * 16);
        }
        uuid[14] = 4; // set bits 12-15 of time-high-and-version to 0100
        uuid[19] = uuid[19] &= ~(1 << 2); // set bit 6 of clock-seq-and-reserved to zero
        uuid[19] = uuid[19] |= (1 << 3); // set bit 7 of clock-seq-and-reserved to one
        uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';

        return _.map(uuid, function(x) {
            return x.toString(16);
        }).join('');
    }
};

// _.isBlockedUA()
// This is to block various web spiders from executing our JS and
// sending false tracking data
var BLOCKED_UA_STRS = [
    'ahrefsbot',
    'ahrefssiteaudit',
    'amazonbot',
    'baiduspider',
    'bingbot',
    'bingpreview',
    'chrome-lighthouse',
    'facebookexternal',
    'petalbot',
    'pinterest',
    'screaming frog',
    'yahoo! slurp',
    'yandex',

    // a whole bunch of goog-specific crawlers
    // https://developers.google.com/search/docs/advanced/crawling/overview-google-crawlers
    'adsbot-google',
    'apis-google',
    'duplexweb-google',
    'feedfetcher-google',
    'google favicon',
    'google web preview',
    'google-read-aloud',
    'googlebot',
    'googleweblight',
    'mediapartners-google',
    'storebot-google'
];
_.isBlockedUA = function(ua) {
    var i;
    ua = ua.toLowerCase();
    for (i = 0; i < BLOCKED_UA_STRS.length; i++) {
        if (ua.indexOf(BLOCKED_UA_STRS[i]) !== -1) {
            return true;
        }
    }
    return false;
};

/**
 * @param {Object=} formdata
 * @param {string=} arg_separator
 */
_.HTTPBuildQuery = function(formdata, arg_separator) {
    var use_val, use_key, tmp_arr = [];

    if (_.isUndefined(arg_separator)) {
        arg_separator = '&';
    }

    _.each(formdata, function(val, key) {
        use_val = encodeURIComponent(val.toString());
        use_key = encodeURIComponent(key);
        tmp_arr[tmp_arr.length] = use_key + '=' + use_val;
    });

    return tmp_arr.join(arg_separator);
};

_.getQueryParam = function(url, param) {
    // Expects a raw URL

    param = param.replace(/[[]/g, '\\[').replace(/[\]]/g, '\\]');
    var regexS = '[\\?&]' + param + '=([^&#]*)',
        regex = new RegExp(regexS),
        results = regex.exec(url);
    if (results === null || (results && typeof(results[1]) !== 'string' && results[1].length)) {
        return '';
    } else {
        var result = results[1];
        try {
            result = decodeURIComponent(result);
        } catch(err) {
            console.error('Skipping decoding for malformed query param: ' + result);
        }
        return result.replace(/\+/g, ' ');
    }
};


// _.cookie
// Methods partially borrowed from quirksmode.org/js/cookies.html
_.cookie = {
    get: function(name) {
        var nameEQ = name + '=';
        var ca = document.cookie.split(';');
        for (var i = 0; i < ca.length; i++) {
            var c = ca[i];
            while (c.charAt(0) == ' ') {
                c = c.substring(1, c.length);
            }
            if (c.indexOf(nameEQ) === 0) {
                return decodeURIComponent(c.substring(nameEQ.length, c.length));
            }
        }
        return null;
    },

    parse: function(name) {
        var cookie;
        try {
            cookie = _.JSONDecode(_.cookie.get(name)) || {};
        } catch (err) {
            // noop
        }
        return cookie;
    },

    set_seconds: function(name, value, seconds, is_cross_subdomain, is_secure, is_cross_site, domain_override) {
        var cdomain = '',
            expires = '',
            secure = '';

        if (domain_override) {
            cdomain = '; domain=' + domain_override;
        } else if (is_cross_subdomain) {
            var domain = extract_domain(document.location.hostname);
            cdomain = domain ? '; domain=.' + domain : '';
        }

        if (seconds) {
            var date = new Date();
            date.setTime(date.getTime() + (seconds * 1000));
            expires = '; expires=' + date.toGMTString();
        }

        if (is_cross_site) {
            is_secure = true;
            secure = '; SameSite=None';
        }
        if (is_secure) {
            secure += '; secure';
        }