POP HTML SHARE

// GAS 程式碼開始 (v5 - 新增說明欄位)
const SHEET_NAME = "上傳的網頁";
const HEADERS = ["ID", "檔案名稱", "HTML內容", "上傳時間", "說明"];

function getSheet() {
  const ss = SpreadsheetApp.getActiveSpreadsheet();
  let sheet = ss.getSheetByName(SHEET_NAME);
  if (!sheet) {
    sheet = ss.insertSheet(SHEET_NAME);
    sheet.appendRow(HEADERS);
    sheet.setFrozenRows(1);
    sheet.setColumnWidth(1, 150);
    sheet.setColumnWidth(2, 200);
    sheet.setColumnWidth(3, 100);
    sheet.setColumnWidth(4, 200);
    sheet.setColumnWidth(5, 300); // 新增說明欄的寬度
  }
  return sheet;
}

function handleResponse(data) {
  return ContentService
    .createTextOutput(JSON.stringify(data))
    .setMimeType(ContentService.MimeType.JSON);
}

function doGet(e) {
  try {
    const action = e.parameter.action;
    const sheet = getSheet();

    if (action === "list") {
      const data = sheet.getDataRange().getValues();
      const files = data.slice(1).map(row => ({ 
        id: row[0], 
        filename: row[1],
        description: row[4] || '' // 回傳說明，如果為空則回傳空字串
      }));
      return handleResponse({ status: "success", data: files.reverse() });
    }

    if (action === "read") {
      const id = e.parameter.id;
      if (!id) return ContentService.createTextOutput("Error: Missing ID.");
      
      const data = sheet.getDataRange().getValues();
      const row = data.find(r => r[0] == id);
      
      if (row) {
        return ContentService.createTextOutput(row[2]).setMimeType(ContentService.MimeType.JAVASCRIPT);
      } else {
        return ContentService.createTextOutput("Error: Page not found.");
      }
    }
    
    return ContentService.createTextOutput("Error: Invalid action.");
  } catch (error) {
    return handleResponse({ status: "error", message: error.message });
  }
}

function doPost(e) {
  try {
    const sheet = getSheet();
    const postData = JSON.parse(e.postData.contents);
    const action = postData.action;

    if (action === 'upload') {
      const filename = postData.filename;
      const content = postData.content;
      let customId = postData.id;
      const description = postData.description || ""; // 取得說明，若無則為空字串
      
      // 驗證自訂ID格式
      if (customId && !/^[a-zA-Z0-9-]+$/.test(customId)) {
        return handleResponse({ status: "error", message: "自訂ID只能包含英文、數字和連字號 (-)" });
      }

      // 檢查ID是否重複
      if (customId) {
        const lastRow = sheet.getLastRow();
        if (lastRow > 1) {
          const ids = sheet.getRange(2, 1, lastRow - 1, 1).getValues().flat();
          if (ids.includes(customId)) {
            return handleResponse({ status: "error", message: `ID "${customId}" 已經存在，請換一個。` });
          }
        }
      }
      
      const id = customId || Utilities.getUuid();
      const timestamp = new Date();
      sheet.appendRow([id, filename, content, timestamp, description]); // 將說明寫入試算表
      return handleResponse({ status: "success", id: id, filename: filename });
    }

    if (action === 'delete') {
      const idToDelete = postData.id;
      if (!idToDelete) return handleResponse({ status: "error", message: "缺少ID" });
      
      const data = sheet.getDataRange().getValues();
      const rowIndex = data.findIndex(row => row[0] == idToDelete);
      
      if (rowIndex > 0) {
        sheet.deleteRow(rowIndex + 1);
        return handleResponse({ status: "success", message: "刪除成功" });
      } else {
        return handleResponse({ status: "error", message: "找不到要刪除的項目" });
      }
    }
    
    return handleResponse({ status: "error", message: "無效的操作" });

  } catch (error) {
    return handleResponse({ status: "error", message: error.message });
  }
}
// GAS 程式碼結束