import fs, { writeFileSync } from "fs";
import path from "path";
import ExcelJS from "exceljs";
import { PDFDocument, StandardFonts, rgb } from "pdf-lib";

/**
 * 读取指定路径下的所有.stl文件
 * @param dirPath 要搜索的目录路径
 * @returns 返回包含所有.stl文件名的数组
 */
export const findSTLFiles = (dirPath: string): Promise<string[]> => {
  return new Promise((resolve) => {
    // 检查路径是否存在
    if (!fs.existsSync(dirPath)) {
      resolve([]); // 路径不存在时返回空数组
      return;
    }

    // 异步读取目录内容
    fs.readdir(dirPath, (err, files) => {
      if (err) {
        resolve([]); // 读取错误时返回空数组
      } else {
        // 过滤出.stl文件
        const stlFiles = files.filter(
          (file) => path.extname(file).toLowerCase() === ".stl"
        );
        resolve(stlFiles);
      }
    });
  });
};

export const createPDF = async (savePath: string) => {
  // 创建一个新的 PDF 文档
  const pdfDoc = await PDFDocument.create();

  // 自定义纸张大小，例如：宽 600，高 800
  const page = pdfDoc.addPage([600, 800]);

  // 自定义边距，例如左右上下都是 50
  const margin = 50;
  const pageWidth = page.getWidth();
  const pageHeight = page.getHeight();

  // 设置字体
  const font = await pdfDoc.embedFont(StandardFonts.Helvetica);

  // 绘制透明色块
  // 设置颜色为半透明蓝色，透明度为 0.5
  const color = rgb(0.11, 0.62, 0.92, 0.5); // 最后一个值是透明度
  page.drawRectangle({
    x: margin,
    y: margin,
    width: pageWidth - 2 * margin,
    height: pageHeight - 2 * margin,
    color: color,
    opacity: 0.5,
  });

  // 添加文本
  page.drawText("这里是自定义边距内的文本。", {
    x: margin,
    y: pageHeight - margin - 30, // 文本的位置考虑了顶部边距
    size: 12,
    font: font,
    color: rgb(0, 0, 0),
  });

  // 保存 PDF
  const pdfBytes = await pdfDoc.save();
  writeFileSync(path.join(savePath, "报告.pdf"), pdfBytes);
};

/**
 * json存excel
 */
export const createExcelFile = async (savePath: string, measurement) => {
  // 创建一个新的工作簿
  const workbook = new ExcelJS.Workbook();
  // 添加一个工作表
  const worksheet = workbook.addWorksheet("My Sheet");

  // 添加列标题
  worksheet.columns = [
    { key: "1", header: "瓣环平面周长", width: 10 },
    { key: "2", header: "瓣环平面周长导出径", width: 10 },
    { key: "3", header: "瓣环平面面积", width: 10 },
    { key: "4", header: "瓣环平面面积导出径", width: 10 },
    { key: "5", header: "瓣环平面长径", width: 10 },
    { key: "6", header: "瓣环平面短径", width: 10 },
    { key: "7", header: "瓣环平面平均径", width: 10 },
    //
    { key: "8", header: "窦管交界周长", width: 10 },
    { key: "9", header: "窦管交界周长导出径", width: 10 },
    { key: "10", header: "窦管交界面积", width: 10 },
    { key: "11", header: "窦管交界面积导出径", width: 10 },
    { key: "12", header: "窦管交界长径", width: 10 },
    { key: "13", header: "窦管交界短径", width: 10 },
    { key: "14", header: "窦管交界平均径", width: 10 },
    //
    { key: "15", header: "左室流出道周长", width: 10 },
    { key: "16", header: "左室流出道周长导出径", width: 10 },
    { key: "17", header: "左室流出道面积", width: 10 },
    { key: "18", header: "左室流出道面积导出径", width: 10 },
    { key: "19", header: "左室流出道长径", width: 10 },
    { key: "20", header: "左室流出道短径", width: 10 },
    { key: "21", header: "左室流出道平均径", width: 10 },
    //
    { key: "22", header: "升主动脉（瓣环上4cm）周长", width: 10 },
    { key: "23", header: "升主动脉（瓣环上4cm）周长导出径", width: 10 },
    { key: "24", header: "升主动脉（瓣环上4cm）面积", width: 10 },
    { key: "25", header: "升主动脉（瓣环上4cm）面积导出径", width: 10 },
    { key: "26", header: "升主动脉（瓣环上4cm）长径", width: 10 },
    { key: "27", header: "升主动脉（瓣环上4cm）短径", width: 10 },
    { key: "28", header: "升主动脉（瓣环上4cm）平均径", width: 10 },
    //
    { key: "29", header: "瓦氏窦周长", width: 10 },
    { key: "30", header: "瓦氏窦周长导出径", width: 10 },
    { key: "31", header: "瓦氏窦面积", width: 10 },
    { key: "32", header: "瓦氏窦面积导出径", width: 10 },
    { key: "33", header: "瓦氏窦长径", width: 10 },
    { key: "34", header: "瓦氏窦短径", width: 10 },
    { key: "35", header: "瓦氏窦平均径", width: 10 },
    //
    { key: "36", header: "左侧冠脉开口高度", width: 10 },
    { key: "37", header: "右侧冠脉开口高度", width: 10 },
    { key: "38", header: "钙化信息", width: 10 },
    { key: "39", header: "主动脉夹角", width: 10 },
  ];

  const annulus_plane = measurement["annulus_plane"];
  const STJ_plane = measurement["STJ_plane"];
  const LVOT_plane = measurement["LVOT_plane"];
  const nominal_aorta_plane = measurement["nominal_aorta_plane"];
  const SOV_plane = measurement["SOV_plane"];
  const calcification_analysis =
    measurement["calcification_analysis"]["HU_statistic"];

  worksheet.addRow({
    1: annulus_plane["perimeter"],
    2: annulus_plane["PED"],
    3: annulus_plane["area"],
    4: annulus_plane["AED"],
    5: annulus_plane["max_dist"],
    6: annulus_plane["min_dist"],
    7: annulus_plane["average_dist"],
    //
    8: STJ_plane["perimeter"],
    9: STJ_plane["PED"],
    10: STJ_plane["area"],
    11: STJ_plane["AED"],
    12: STJ_plane["max_dist"],
    13: STJ_plane["min_dist"],
    14: STJ_plane["average_dist"],
    //
    15: LVOT_plane["perimeter"],
    16: LVOT_plane["PED"],
    17: LVOT_plane["area"],
    18: LVOT_plane["AED"],
    19: LVOT_plane["max_dist"],
    20: LVOT_plane["min_dist"],
    21: LVOT_plane["average_dist"],
    //
    22: nominal_aorta_plane["perimeter"],
    23: nominal_aorta_plane["PED"],
    24: nominal_aorta_plane["area"],
    25: nominal_aorta_plane["AED"],
    26: nominal_aorta_plane["max_dist"],
    27: nominal_aorta_plane["min_dist"],
    28: nominal_aorta_plane["average_dist"],
    //
    29: SOV_plane["perimeter"],
    30: SOV_plane["PED"],
    31: SOV_plane["area"],
    32: SOV_plane["AED"],
    33: SOV_plane["max_dist"],
    34: SOV_plane["min_dist"],
    35: SOV_plane["average_dist"],
    //
    38: calcification_analysis.map((i) => `HU${i.key}:${i.value}`).join(";"),
    39: annulus_plane["horizontal_angle"],
  });

  // 设置样式
  worksheet.getRow(1).font = { bold: true };
  // 保存到文件
  await workbook.xlsx.writeFile(path.join(savePath));
};