// ==UserScript==
// @name         ChatGPT 继续 简化操作
// @namespace    http://tampermonkey.net/
// @version      0.5.2
// @description  ChatGPT 调整补全代码的提示调整为中文，新增一个 继续 的按钮 并自适应宽度.
// @author       Geetesh.Gupta
// @match        https://chat.openai.com/chat*
// @match        https://chat.openai.com/c/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=openai.com
// @grant        none
// @license      MIT
// @downloadURL https://update.greasyfork.icu/scripts/462301/ChatGPT%20%E7%BB%A7%E7%BB%AD%20%E7%AE%80%E5%8C%96%E6%93%8D%E4%BD%9C.user.js
// @updateURL https://update.greasyfork.icu/scripts/462301/ChatGPT%20%E7%BB%A7%E7%BB%AD%20%E7%AE%80%E5%8C%96%E6%93%8D%E4%BD%9C.meta.js
// ==/UserScript==

(function() {
    'use strict';
    function insertButton(elem) {
        let content = document.getElementById('btnContent');
        content.append(elem);
    }


    function createBtn(name) {
        let continueBtn = document.createElement('button');
        continueBtn.textContent = name;
        continueBtn.setAttribute('style', 'display: inline-flex; cursor: pointer;');
        continueBtn.className = 'btn flex gap-2 justify-center btn-neutral';
        continueBtn.style.flexGrow = '1';
        continueBtn.style.width = 'auto';
        continueBtn.style.maxWidth = '100%';

        return continueBtn;
    }


    function getPrevNodeValues() {
        let codeBlocks = document.querySelectorAll('code.hljs');
        let lastCodeBlock = codeBlocks[codeBlocks.length - 1];
        let children = lastCodeBlock.innerText.split("\n")
        let res = "";
        for (let i=children.length-1; i>=0 && res.trim().length < 20; i--) {
            res += children[i];
        }
        return res;
    }

    function updateTextArea(value) {
        document.getElementsByTagName('textarea')[0].value = value
    }

    function main() {
        const div = document.createElement('div');
        div.id = "btnContent";
        div.setAttribute('style', 'display: flex;');
        let formElem = document.getElementsByTagName('form')[0];
        let btnsParent = formElem.getElementsByTagName('button')[0].parentElement;
        btnsParent.insertBefore(div, btnsParent.firstElementChild);

        const btn = createBtn('补全代码');
        insertButton(btn);
        btn.onclick = () => {
            try {
                updateTextArea("从" + getPrevNodeValues()+"这里以代码格式接着写");
            } catch (error) {
                console.log("Some error occured. Possible reasons:- Previous ChatGPT response does not include any code block or Website structure changed. The actual error: ", error)
            }
        }
        const btnNext = createBtn('继续');
        insertButton(btnNext);
        btnNext.onclick = () => {
            try {
                updateTextArea("继续");
            } catch (error) {
                console.log("Some error occured. Possible reasons:- Previous ChatGPT response does not include any code block or Website structure changed. The actual error: ", error)
            }
        }
    }
    main();

    const targetNode = document.getElementById('__next');
    // 创建一个新的 MutationObserver 对象
    const observer = new MutationObserver((mutationsList) => {
        const content = document.getElementById('btnContent');
        if(!content){
            main();
        }
    });
    // 配置观察选项（我们只关心子元素变化）
    const config = { childList: true };

    // 开始观察目标节点
    observer.observe(targetNode, config);
})();