// ==UserScript==
// @name         ZhengFangJiaoWu
// @namespace    https://github.com/love98ooo/
// @version      0.3.6
// @description  正方教务系统猴油脚本，主要用于查询平时分
// @author       Love98
// @match        http://jwxt.njupt.edu.cn/xs_main.aspx?*
// @match        *://vpn.njupt.edu.cn:8443/http/webvpn5e607416b84322620fcfebad55f2c381efb3e3d8de97685feb46fd2e866a8ae9/xs_main.aspx?*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=njupt.edu.cn
// @grant        none
// ==/UserScript==

(function () {
    const mainFrame = document.getElementById("iframeautoheight");
    let location = mainFrame.contentWindow.location.toString();
    const url = window.location.href;
    const splitUrl = url.split("/")[2];
    let baseUrl = "";
    // console.log(url);
    switch (splitUrl) {
        case "vpn.njupt.edu.cn:8443":
            baseUrl =
                "https://vpn.njupt.edu.cn:8443/http/webvpn5e607416b84322620fcfebad55f2c381efb3e3d8de97685feb46fd2e866a8ae9/";
            break;
        case "jwxt.njupt.edu.cn":
            baseUrl = "http://jwxt.njupt.edu.cn/";
            break;
        default:
            break;
    }
    mainFrame.onload = () => {
        const floatingButton2 = document.createElement("div");
        const floatingButton = document.createElement("button");
        floatingButton.textContent = "查询考试详细分数";
        floatingButton.className = "button";

        // 创建 style 节点用于存储样式表
        const extralstyle = document.createElement("style");
        extralstyle.className = "extralstyle";
        extralstyle.appendChild(document.createTextNode(getStyle()));
        if (!document.querySelector("style.extralstyle"))
            document.head.appendChild(extralstyle);

        // 整体容器
        const containerElement = document.createElement("div");
        containerElement.className = "extralbox";

        // 展示个人信息的部分
        const userElement = document.createElement("div");
        userElement.className = "extralbox-header";
        userElement.style.background =
            "url(" +
            baseUrl +
            "style/standard/images/toolbox_right.gif) no-repeat right top";

        // 展示成绩的部分
        const courseElement = document.createElement("header");
        courseElement.className = "extralbox-main";
        containerElement.appendChild(userElement);
        containerElement.appendChild(courseElement);

        // Create the close button
        const closeBtn = document.createElement("span");
        closeBtn.className = "button--close";
        closeBtn.textContent = "×";
        // Add the close button to the container element
        userElement.appendChild(closeBtn);
        const remarkElement = document.createElement("div");

        remarkElement.style.textAlign = "center";
        remarkElement.textContent =
            "注意：“期末 : 平时”为三项成绩倒推的结果，可能不准确；确切地说，二者相差越大，结果越准确。";

        const buttonContainerElement = document.createElement("footer");
        buttonContainerElement.className = "extralbox-footer";

        const buttonElement = document.createElement("button");
        buttonElement.className = "extralbox-footer-button";
        buttonElement.textContent = "反馈Bug";

        buttonContainerElement.appendChild(buttonElement);
        containerElement.appendChild(buttonContainerElement);

        const clickAction = () => {
            // 若点击时已存在面板，则移除
            if (document.querySelector(".extralbox")) {
                document.querySelector(".extralbox").remove();
            }

            document.body.appendChild(containerElement);

            const extractDataAndDisplay = () => {
                var a =
                    document.getElementById("iframeautoheight").contentDocument.Form1
                        .childNodes[1].value;
                const decodeUTF8FromBase64 = (base64) => {
                    const text = atob(base64);
                    const length = text.length;
                    const bytes = new Uint8Array(length);
                    for (var i = 0; i < length; i++) {
                        bytes[i] = text.charCodeAt(i);
                    }
                    const decoder = new TextDecoder(); // default is utf-8
                    return decoder.decode(bytes);
                };

                var text = decodeUTF8FromBase64(a);
                var credits = [];
                var gradePoints = [];
                var ordinaryPoints = [];
                var examPoints = [];
                var totalPoints = [];
                var course = [];
                var courseId = [];
                var user = "";

                let x = [];
                while (text.indexOf("<") !== -1) {
                    if (text.slice(text.indexOf("<") + 1).indexOf("<") === -1) {
                        break;
                    } else if (
                        text.slice(text.indexOf("<") + 1).indexOf("<") <
                        text.slice(text.indexOf("<") + 1).indexOf(">")
                    ) {
                        text = text.slice(text.indexOf("<") + 1);
                    } else {
                        if (
                            text.slice(text.indexOf("<") + 1, text.indexOf(">")) !== "&nbsp;;"
                        ) {
                            x.push(text.slice(text.indexOf("<") + 1, text.indexOf(">")));
                        }
                        text = text.slice(text.indexOf(">") + 1);
                    }
                }

                let gg = [];

                for (let i = 0, now = 0; i <= x.length - 1;) {
                    if (x[i] === "Text;") {
                        if (now >= 9) {
                            if (i + 48 >= x.length) {
                                break;
                            }
                            let ng = [];
                            for (let j = i + 1; j < i + 48; j++) {
                                if (x[j] !== "Text;") {
                                    x[j] = x[j].replace(" ", "").replace(";", "");
                                    ng.push(x[j]);
                                }
                            }
                            gg.push(ng);
                            i += 48;
                        } else {
                            if (now <= 5) {
                                user += x[i + 1] + "  ";
                            }
                            now += 1;
                            i += 1;
                        }
                    } else {
                        i += 1;
                    }
                }

                const deleteExtraStr = (text) => {
                    return text.replace(/&nbsp\\;/g, "").replace(" ", "");
                };

                for (let i = 0; i < gg.length; i++) {
                    const pattern = /^\d{4}-\d{4}$/;
                    if (!pattern.test(gg[i][0])) {
                        continue;
                    }
                    courseId.push(deleteExtraStr(gg[i][2]));
                    course.push(deleteExtraStr(gg[i][3]));
                    credits.push(deleteExtraStr(gg[i][6]));
                    gradePoints.push(deleteExtraStr(gg[i][8]));
                    ordinaryPoints.push(deleteExtraStr(gg[i][9]));
                    examPoints.push(deleteExtraStr(gg[i][11]));
                    totalPoints.push(deleteExtraStr(gg[i][13]));
                }

                // Assign user and course information to HTML elements
                document
                    .querySelector(".extralbox-header")
                    .appendChild(document.createTextNode(user));

                // Create the table element
                const tableElement = document.createElement("table");
                const tbodyElement = document.createElement("tbody");
                tableElement.appendChild(tbodyElement);

                tableElement.className = "datelist";

                // Add the header row
                const headerRow = document.createElement("tr");
                headerRow.className = "datelisthead";
                tbodyElement.appendChild(headerRow);

                // Add the header cells
                const headers = [
                    "课程编号",
                    "课程",
                    "学分",
                    "绩点",
                    "平时分",
                    "卷面分",
                    "总分",
                    "期末 : 平时",
                ];
                for (const headerText of headers) {
                    const headerCell = document.createElement("td");
                    headerCell.textContent = headerText;
                    headerRow.appendChild(headerCell);
                }

                // Add the data rows
                for (var i = 0; i < course.length; i++) {
                    const row = document.createElement("tr");
                    row.className = "table-row";
                    const courseIdCell = document.createElement("td");
                    courseIdCell.textContent = courseId[i];
                    row.appendChild(courseIdCell);
                    // courseIdCell.style.border = "1px solid black";

                    const courseCell = document.createElement("td");
                    courseCell.textContent = course[i];
                    row.appendChild(courseCell);
                    // courseCell.style.border = '1px solid black';

                    const creditsCell = document.createElement("td");
                    creditsCell.textContent = credits[i];
                    row.appendChild(creditsCell);
                    // creditsCell.style.border = '1px solid black';

                    const gradePointsCell = document.createElement("td");
                    gradePointsCell.textContent = gradePoints[i];
                    row.appendChild(gradePointsCell);
                    // gradePointsCell.style.border = '1px solid black';

                    const ordinaryPointsCell = document.createElement("td");
                    ordinaryPointsCell.textContent = ordinaryPoints[i];
                    row.appendChild(ordinaryPointsCell);
                    // ordinaryPointsCell.style.border = '1px solid black';

                    const examPointsCell = document.createElement("td");
                    examPointsCell.textContent = examPoints[i];
                    row.appendChild(examPointsCell);
                    // examPointsCell.style.border = '1px solid black';

                    const totalPointsCell = document.createElement("td");
                    totalPointsCell.textContent = totalPoints[i];
                    row.appendChild(totalPointsCell);
                    // totalPointsCell.style.border = '1px solid black';

                    const scaleCell = document.createElement("td");
                    if (
                        !isNaN(totalPoints[i]) &&
                        !isNaN(examPoints[i]) &&
                        !isNaN(ordinaryPoints[i]) &&
                        Number(examPoints[i]) != 0 &&
                        Number(ordinaryPoints[i]) != 0
                    ) {
                        if (Number(examPoints[i]) == Number(ordinaryPoints[i])) {
                            scaleCell.textContent = "Unknown";
                        } else {
                            let a = (
                                (10 * Number(totalPoints[i]) - 10 * Number(ordinaryPoints[i])) /
                                (Number(examPoints[i]) - Number(ordinaryPoints[i]))
                            ).toFixed(0);
                            if (a <= 0 || a >= 10) {
                                scaleCell.textContent = "Unknown";
                            } else {
                                scaleCell.textContent = a.toString();
                                scaleCell.textContent += ":" + (10 - a).toString();
                            }
                        }
                    } else {
                        scaleCell.textContent = "";
                    }
                    row.appendChild(scaleCell);
                    // scaleCell.style.border = "1px solid black";
                    // scaleCell.style.padding = "4px";

                    tbodyElement.appendChild(row);
                }
                // Add the table element to the page
                document.querySelector(".extralbox-main").appendChild(tableElement);
                document.querySelector(".extralbox-main").appendChild(remarkElement);

                // Get the container element
                const containerElement = document.querySelector(".extralbox");

                // Add the event listener
                closeBtn.addEventListener("click", () => {
                    containerElement.remove();
                });

                return gg;
            };
            var data = extractDataAndDisplay();
            buttonElement.addEventListener("click", () => {
                var str = "['" + data.join("', '") + "']";
                var textArea = document.createElement("textarea");
                textArea.value = str;
                document.body.appendChild(textArea);
                textArea.select();
                document.execCommand("copy");
                document.body.removeChild(textArea);
                alert(
                    "已复制相关数据至剪贴板，请在GitHub中提Issues\n注意：可能包含个人信息数据，如有需要请自行在粘贴出来的文本中删除个人信息"
                );
                let a = document.createElement("a");
                a.setAttribute(
                    "href",
                    "https://github.com/love98ooo/ZhengFangJiaoWuSystemTampermonkeyScript/issues"
                );
                a.setAttribute("target", "_blank");
                a.setAttribute("id", "githubIssues");
                if (!document.getElementById("githubIssues")) {
                    document.body.appendChild(a);
                }
                a.click();
            });
        };
        let breadcrumb = document.getElementById("dqwz").textContent;
        if (breadcrumb === "成绩查询") {
            let select = mainFrame.contentDocument.querySelector(
                "#divcxtj > div:nth-child(3) > p.search_con"
            );
            mainFrame.contentDocument.getElementsByClassName(
                "toolbox"
            )[0].style.backgroundSize = "cover";
            floatingButton.onclick = clickAction;
            select.appendChild(floatingButton);
        }
    };
})();

function getStyle() {
    return `.extralbox {
    position: fixed;
    top: 180px;
    left: 50%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    z-index: 99999;

    width: 924px;
    height: fit-content;
    max-height: min(75%, 100vh - 240px );
    border: 1px solid #fff;
    border-radius: 10px;
    outline: 1px solid #8aa4c4;

    overflow-y: auto;

    background-color: white;

    transform: translateX(-50%);
  }

  .extralbox::-webkit-scrollbar {
    width: 8px;
    height: 8px;
    background-color: transparent;
  }

  .extralbox::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
  }

  .extralbox::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
  }

  .extralbox-header {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex: none;
    height: 2rem;
    background-size: cover;
    border-radius: 10px 0;
    margin: 0 0 1rem;
  }

  .extralbox-main {
    display: flex;
    flex-direction: column;
    flex: none;
    height: calc(120% - 2rem);
    padding: 0 15px 15px;
    text-align: center;
  }

  .extralbox-footer {
    display: flex;
    justify-content: center;
    height: 40px;
    padding: 10px;
  }

  .datelist {
    width: 100%;
  }

  .table-row td,
  .datelisthead td {
    height: 20px;
  }

  .table-row td:hover,
  .datelisthead td:hover {
    padding: 0.2em 0.5em;
  }

  .button--close {
    position: absolute;
    right: 20px;
    cursor: pointer;
    font-size: medium;
  }
  `;
}