// ==UserScript==
// @name         BUCT cource deepseek listener
// @namespace    http://tampermonkey.net/
// @version      2025-05-07
// @description  try to take over the world!
// @author       You
// @match        https://chat.deepseek.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=deepseek.com
// @grant        GM_registerMenuCommand
// @grant        GM_unregisterMenuCommand
// ==/UserScript==

(function () {
    "use strict";
    const CLASS_MAP = {
        input: "_27c9245",
        send: "_7436101",
        chat: "dad65929",
        latest: "d7dc56a8",
        done: "_43c05b5"
    };

    const HOST = "https://local.bluemangoo.net:3443";

    const question = {
        question: "",
        questionID: "",
        answered: true
    };

    async function poll() {
        // query latest question
        let res;
        try {
            res = await fetch(`${HOST}/polling?env=deepseek`, {
                method: "GET",
                headers: {
                    "Content-Type": "application/json"
                }
            });
        } catch {
            await new Promise((resolve) => setTimeout(resolve, 1000));
            return poll();
        }
        poll();
        try {
            const data = await res.json();
            if (data.status !== "nothing") {
                if (question.answered) {
                    question.answered = false;
                    question.question = data.data.question;
                    question.questionID = data.data.questionID;
                    console.log("获取到新问题:", question.question);
                    ask(question.question);
                }
            }
        } catch (e) {
            console.error(e);
        }
    }

    async function answer(questionID, answer) {
        console.log("回答问题:", questionID, answer);
        question.answered = true;
        await fetch(`${HOST}/answer`, {
            method: "POST",
            headers: {
                "Content-Type": "application/json"
            },
            body: JSON.stringify({
                questionID,
                answer
            })
        });
    }

    function setNativeValue(element, value) {
        const valueSetter = Object.getOwnPropertyDescriptor(element, "value").set;
        const prototype = Object.getPrototypeOf(element);
        const prototypeValueSetter = Object.getOwnPropertyDescriptor(prototype, "value").set;

        if (valueSetter && valueSetter !== prototypeValueSetter) {
            prototypeValueSetter.call(element, value);
        } else {
            valueSetter.call(element, value);
        }
    }

    function ask(question) {
        const input = document.getElementsByClassName(CLASS_MAP.input)[0];
        setNativeValue(input, question);
        input.dispatchEvent(new Event("input", { bubbles: true }));
        document.getElementsByClassName(CLASS_MAP.send)[0].click();
    }

    function init() {
        const chat = document.getElementsByClassName(CLASS_MAP.chat)[0];

        // 创建一个 MutationObserver 来监听子元素变化
        const observer = new MutationObserver((mutations) => {
            mutations.forEach((mutation) => {
                // 检查新增的节点
                mutation.addedNodes.forEach((node) => {
                    // 确保是元素节点
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        const element = node;
                        // 检查新增的元素是否同时包含 "_4f9bf79" 和 "d7dc56a8" 类
                        if (
                            element.classList.contains("_4f9bf79") &&
                            element.classList.contains("d7dc56a8")
                        ) {
                            console.log("目标元素已添加:", element);

                            // 对这个元素添加属性变化的监听器
                            const targetObserver = new MutationObserver((mutations) => {
                                mutations.forEach((mutation) => {
                                    // 检查是否添加了 "_43c05b5" 类
                                    if (
                                        mutation.type === "attributes" &&
                                        mutation.attributeName === "class" &&
                                        element.classList.contains("_43c05b5")
                                    ) {
                                        const ans = element.innerText.toString();
                                        console.log("内容:", ans);
                                        // 可以在这里执行其他操作
                                        targetObserver.disconnect();
                                        answer(question.questionID, ans);
                                    }
                                });
                            });

                            // 开始观察目标元素的属性变化
                            targetObserver.observe(element, {
                                attributes: true, // 监听属性变化
                                attributeFilter: ["class"] // 只监听 class 变化
                            });
                        }
                    }
                });
            });
        });

        // 开始观察父元素的子元素变化
        observer.observe(chat, {
            childList: true, // 监听子元素变化
            subtree: true // 监听所有后代元素
        });

        console.log("正在监听父元素:", chat);

        poll();
    }

    GM_registerMenuCommand("初始化作业桥", init);
})();