function main(workbook: ExcelScript.Workbook) {
    // 取得使用中的儲存格和工作表。
    let originalSheet = workbook.getActiveWorksheet();

    // 取得原始資料範圍
    let dataRange = originalSheet.getRange("A1:D" + originalSheet.getUsedRange().getRowCount());
    let data = dataRange.getValues();

    let requiredDates = ["20250327", "20250326", "20250325", "20250324", "20250323",
        "20250322", "20250321", "20250320", "20250319",
        "20250318", "20250317"];

    let worksheetName = "Converted Data";
    let oldSheet = workbook.getWorksheet(worksheetName);
    if (oldSheet) oldSheet.delete();

    let newSheet = workbook.addWorksheet(worksheetName);

    // 寫入新表格的表頭
    newSheet.getRange("A1").setValue("domain");
    for (let i = 0; i < requiredDates.length; i++) {
        newSheet.getCell(0, i + 1).setValue(requiredDates[i]);
    }

    // 逐行處理原始資料
    let outputData: (string | number | boolean)[][] = [];
    data: for (let i = 1; i < data.length; i++) {
        let domain = data[i][2]; // 取得 domain
        let size = +data[i][0]; // 取得 size
        let date = data[i][3];
        let dateIndex = requiredDates.indexOf(`${date}`);

        if (!domain) continue;

        for (let j = 0; j < outputData.length; j++) {
            if (outputData[j][0] === domain) {
                if (dateIndex > -1) {
                    outputData[j][dateIndex + 1] = size;
                }
                continue data;
            }
        }

        let rowData: (string | number | boolean)[] = [domain]; // 預備輸出行的初始值
        for (let j = 0; j < requiredDates.length; j++) {
            rowData[j + 1] = "";
        }
        if (dateIndex > -1) {
            rowData[dateIndex + 1] = size;
        }
        outputData.push(rowData);
    }


    // 將轉換後的資料寫入新表格
    if (outputData.length > 0) {
        console.log("rows", outputData.length);
        console.log("columns", outputData[0].length);
        console.log(outputData);
        newSheet.getRangeByIndexes(1, 0, outputData.length, outputData[0].length).setValues(outputData);
    }
}