// ==UserScript==
// @name         KeepChatGPT
// @description  完美解决ChatGPT网络错误, 不再频繁地刷新网页, 非常顺畅. 解决了这几类报错: (1) NetworkError when attempting to fetch resource, (2) Something went wrong. If this issue persists please contact us through our help center at help.openai.com.
// @version      2.3
// @author       xcanwin
// @namespace    https://github.com/xcanwin/KeepChatGPT/
// @supportURL   https://github.com/xcanwin/KeepChatGPT/
// @icon         data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" height="24" width="24" stroke-width="2" fill="none" stroke="currentColor"><path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"></path></svg>
// @license      GPL-2.0-only
// @match        *://chat.openai.com/chat*
// @grant        none
// @run-at       document-idie
// @downloadURL none
// ==/UserScript==


(function() {
    'use strict';

    var loadifr = function() {
        var u = `/api/${GM_info.script.author.slice(2,3)}uth/s${GM_info.script.name.slice(1, 2)}ssion`;
        if(!window.xcanwin){
            var ifr = document.createElement('iframe');
            ifr.id = "xcanwin";
            ifr.style.display = 'none';
            ifr.src = u;
            ifr.style.width = document.querySelector("nav a").offsetWidth + 'px';
            ifr.style.height = '75px';
            ifr.onload = function() {
                try {
                    console.log(`KeepChatGPT: ${JSON.parse(ifr.contentDocument.body.innerText)['expires']}`);
                    ifr.contentWindow.document.body.style.background = '#555';
                } catch (e) {
                }
            };
            document.querySelector("nav").appendChild(ifr);
        } else{
            window.xcanwin.src = u;
        }
    }

    var loadhead = function() {
        if(!window.ndivid){
            loadifr();
            var ndiv = document.createElement("div");
            ndiv.id = "ndivid";
            ndiv.setAttribute("class", document.querySelector("nav a").className);
            ndiv.innerHTML = `<img src='${GM_info.script.icon}' />KeepChatGPT by xcanwin`;
            ndiv.onclick = kcg;
            var nav = document.querySelector('nav');
            nav.insertBefore(ndiv, nav.childNodes[0]);
            var newstyle = document.createElement('style');
            newstyle.innerHTML = `
#ndivid {
    color: #555;
    background: linear-gradient(to top right, #F0B27A, #FDE184, #F0B27A);
    animation: gradient 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
    font-weight: bold;
}
@keyframes gradient {
    0%{background-color:#F0B27A;}
    50%{background-color:#FDE184;}
    100%{background-color:#F0B27A;}
}

#ndivid::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.15),
        rgba(255, 255, 255, 0)
    );
    transform: rotate(-45deg);
    animation: shine 2.8s linear infinite;
}
@keyframes shine {
    from {
        transform: translateX(-50%) translateY(-50%) rotate(-45deg);
    }
    to {
        transform: translateX(150%) translateY(150%) rotate(-45deg);
    }
}
`;
            document.body.appendChild(newstyle);
        }
    }

    var kcg = function() {
        window.xcanwin ? xcanwin.style.display == "none" ? xcanwin.style.display = "" : xcanwin.style.display = "none" : 0;
    }

    setInterval(function() {
        if (document.querySelector("nav a")) {
            loadhead();
        }
    }, 300);

    setInterval(function() {
        if (document.querySelector("nav a")) {
            loadifr();
        }
    }, 1000 * 30);

})();