// ==UserScript==
// @name         广开自动评分助手（可拖动+缩小放大）
// @namespace    http://tampermonkey.net/
// @version      3.1
// @description  可拖动、可折叠缩小放大、全自动评分
// @author       User
// @match        https://course.ougd.cn/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    // 禁止右键、复制、选中、查看源码快捷键
    document.oncontextmenu = e => e.preventDefault();
    document.onselectstart = e => e.preventDefault();
    document.oncopy = e => e.preventDefault();
    document.oncut = e => e.preventDefault();
    document.onpaste = e => e.preventDefault();
    document.onkeydown = function(e) {
        // 拦截F12、Ctrl+U、Ctrl+C、Ctrl+S
        if(e.keyCode === 123 || (e.ctrlKey && e.keyCode === 85) || (e.ctrlKey && e.keyCode === 67) || (e.ctrlKey && e.keyCode === 83)){
            return false;
        }
    };

    const USED_FLAG = "script_first_used";
    let isFirstUse = !localStorage.getItem(USED_FLAG);

    let isRunning = false;
    let processedCount = 0;
    let isMinimized = false;

    const config = {
        minGrade: 98,
        maxGrade: 100,
        fillDelay: 300,
        submitDelay: 800,
        pageDelay: 1500,
    };

    function getRandomGrade() {
        return Math.floor(Math.random() * (config.maxGrade - config.minGrade + 1)) + config.minGrade;
    }

    function setPerPage100() {
        return new Promise(resolve => {
            const sel = document.querySelector('select[onchange*="perpage"], select[name="perpage"]');
            if (sel) {
                sel.value = "100";
                sel.dispatchEvent(new Event("change"));
                setTimeout(resolve, 1000);
            } else {
                resolve();
            }
        });
    }

    function fillGrades() {
        const inputs = document.querySelectorAll('input.finalgrade');
        if (!inputs.length) return 0;
        inputs.forEach(inp => {
            inp.value = getRandomGrade();
            inp.dispatchEvent(new Event('input', {bubbles:true}));
            inp.dispatchEvent(new Event('change', {bubbles:true}));
        });
        processedCount += inputs.length;
        updateInfo();
        return inputs.length;
    }

    function submitPage() {
        return new Promise(resolve => {
            const btn = document.querySelector('input[value="提交成绩"].submit-btn');
            if (btn) {
                btn.click();
                setTimeout(resolve, config.submitDelay);
            } else {
                resolve();
            }
        });
    }

    function goNext() {
        return new Promise((resolve, reject) => {
            const lis = document.querySelectorAll('.pagination li');
            let next = null;
            for (let li of lis) {
                if (li.classList.contains('disabled')) continue;
                let a = li.querySelector('a');
                if (a && (a.textContent.includes('下一页') || a.textContent.includes('»'))) {
                    next = a;
                    break;
                }
            }
            if (next) {
                next.click();
                setTimeout(()=>resolve(true), config.pageDelay);
            } else {
                reject("无下一页");
            }
        });
    }

    async function startAuto() {
        if (!isFirstUse) {
            alert("目前为试用版，如需体验完整版 联系qq3420232476");
            return;
        }
        if (isRunning) return;
        localStorage.setItem(USED_FLAG, "1");
        isRunning = true;
        updateBtnText();
        processedCount = 0;

        await setPerPage100();

        while (isRunning) {
            let cnt = fillGrades();
            if (!cnt) break;
            await new Promise(r=>setTimeout(r, config.fillDelay));
            await submitPage();
            try {
                await goNext();
            } catch (e) {
                alert("全部评分完成！");
                break;
            }
        }
        isRunning = false;
        updateBtnText();
    }

    function stopAuto() {
        isRunning = false;
        updateBtnText();
    }

    function dragPanel(panel, head) {
        let x = 0, y = 0, downX = 0, downY = 0;
        head.onmousedown = function(e) {
            downX = e.clientX;
            downY = e.clientY;
            document.onmousemove = function(ev) {
                x = ev.clientX - downX;
                y = ev.clientY - downY;
                downX = ev.clientX;
                downY = ev.clientY;
                let t = parseInt(panel.style.top) || 20;
                let l = parseInt(panel.style.left) || window.innerWidth - 260;
                panel.style.top = (t + y) + "px";
                panel.style.left = (l + x) + "px";
            };
            document.onmouseup = function() {
                document.onmousemove = null;
                document.onmouseup = null;
            };
        };
    }

    function toggleFold() {
        isMinimized = !isMinimized;
        const wrap = document.getElementById("panelWrap");
        const body = document.getElementById("panelBody");
        const btn = document.getElementById("foldBtn");
        if (isMinimized) {
            body.style.display = "none";
            wrap.style.width = "140px";
            btn.innerText = "放大";
        } else {
            body.style.display = "block";
            wrap.style.width = "240px";
            btn.innerText = "缩小";
        }
    }

    function createUI() {
        if (document.getElementById("panelWrap")) return;

        const wrap = document.createElement("div");
        wrap.id = "panelWrap";
        wrap.style.cssText = `
            position:fixed; top:20px; right:20px; width:240px;
            background:#fff; border:2px solid #007bff;
            border-radius:8px; z-index:999999;
            box-shadow:0 2px 10px #ccc; font-size:14px;
        `;

        const head = document.createElement("div");
        head.style.cssText = `
            background:#007bff; color:#fff; padding:6px 10px;
            display:flex; justify-content:space-between; align-items:center;
            border-radius:6px 6px 0 0; cursor:move;
        `;
        head.innerHTML = `<span>评分助手</span><button id="foldBtn" style="border:none;background:#fff2;color:#fff;padding:2px 6px;border-radius:4px;cursor:pointer;">缩小</button>`;

        const body = document.createElement("div");
        body.id = "panelBody";
        body.style.padding = "10px";
        body.innerHTML = `
            <div id="statusBox" style="padding:6px;background:#f5f7fa;border-radius:4px;margin-bottom:8px;">
                状态：<span id="statTxt" style="color:red">已停止</span><br>
                已处理：<span id="countTxt">0</span> 条
            </div>
            <button id="startBtn" style="width:100%;padding:7px;background:#28a745;color:#fff;border:none;border-radius:4px;margin-bottom:5px;cursor:pointer;">开始全自动</button>
            <button id="stopBtn" style="width:100%;padding:7px;background:#dc3545;color:#fff;border:none;border-radius:4px;cursor:pointer;">停止</button>
        `;

        wrap.appendChild(head);
        wrap.appendChild(body);
        document.body.appendChild(wrap);

        dragPanel(wrap, head);
        document.getElementById("foldBtn").onclick = toggleFold;
        document.getElementById("startBtn").onclick = startAuto;
        document.getElementById("stopBtn").onclick = stopAuto;
    }

    function updateBtnText() {
        const txt = document.getElementById("statTxt");
        if (!txt) return;
        txt.innerHTML = isRunning ? '<span style="color:green">运行中</span>' : '<span style="color:red">已停止</span>';
    }

    function updateInfo() {
        const el = document.getElementById("countTxt");
        if (el) el.innerText = processedCount;
    }

    setTimeout(createUI, 800);
})();