var Cookie = {

    _params: {
        domain: '',
        path: '/',
        expires: '',
        maxAge: -1,
        sameSite: false,
        secure: false
    },

    _lastCookie: '',

    setDefaultParams (params) {
        this._params = {...this._params, ...params};
    },

    getDefaultParams () {
        return this._params;
    },

    getLastCookie () {
       return this._lastCookie;
    },

    set (key, value, params={}) {

        value = encodeURIComponent(value);
        params = {...this._params, ...params};

        if (params.expires) {
            if (params.expires instanceof Date) {
                params.expires = params.expires.toUTCString();
            } else if (typeof params.expires === 'string') {
                const date = new Date(params.expires);
                params.expires = date.toUTCString();
            }
        }

        let cookie = `${key}=${value};`;
        cookie += params.path ? ` Path=${params.path};` : '';
        cookie += params.domain ? ` Domain=${params.domain};` : '';
        cookie += params.expires ? ` Expires=${params.expires};` : '';
        cookie += params.maxAge > -1 ? ` Max-Age=${params.maxAge};` : '';
        cookie += params.sameSite !== false ? ` SameSite=${params.sameSite};` : '';
        cookie += params.secure === true ? ` Secure;` : '';

        this._lastCookie = cookie;
        document.cookie = cookie;

        return true;
    },

    has (key) {
        return this.getAll().hasOwnProperty(key);
    },

    get (key) {
        return this.getAll()[key];
    },

    getAll () {
        const cookies = {};
        this.getString().split(';').forEach(val => {
            const params = val.split('=').map(el => el.trim());
            cookies[params[0]] = params[1];
        });
        return cookies;
    },

    getString () {
        return document.cookie;
    },

    delete (key) {
        if (!this.has(key)) return false;
        return this.set(key, '', { expires: 'Thu, 01 Jan 1970 00:00:01 GMT', maxAge: 0 });
    }
    
};

if (!Cookie.has('key')) {
    if (confirm('Are you want to save a cookie?')) {
        Cookie.set('key', true, { expires: '2022-12-01T00:00:00' });
    }
} else {
    if (confirm('Are you want to delete a cookie?')) {
        Cookie.delete('key');
    }
}

const col = 20;
    const line = 7;
    const symbol = '&';

    let result = '';
    for (let i = 0; i < line; i++) {
        for (let j = 0; j < col; j++) {
            result += symbol;
        }
        result += "\n";
    }

    alert(result);