const FOLDER_ID = "15vJP20FVexzAIfc-8uiSIrTTKbSbG593";
const SHEET_NAME = "Data";

// 【変更】GETリクエスト（図鑑を開いた時）に、画面ではなく「JSONデータ」を返す
function doGet(e) {
  const data = getInsects();
  return ContentService.createTextOutput(JSON.stringify(data))
    .setMimeType(ContentService.MimeType.JSON);
}

// 【変更】POSTリクエスト（登録ボタンを押した時）に、データを受け取って保存する
function doPost(e) {
  try {
    const data = JSON.parse(e.postData.contents);
    const msg = saveData(data);
    return ContentService.createTextOutput(JSON.stringify({ status: "success", message: msg }))
      .setMimeType(ContentService.MimeType.JSON);
  } catch (err) {
    return ContentService.createTextOutput(JSON.stringify({ status: "error", message: err.toString() }))
      .setMimeType(ContentService.MimeType.JSON);
  }
}

// 以下はこれまでの機能そのままです
function uploadToDrive(base64Data, fileName) {
  if (!base64Data) return "";
  const folder = DriveApp.getFolderById(FOLDER_ID);
  const contentType = base64Data.substring(5, base64Data.indexOf(';'));
  const bytes = Utilities.base64Decode(base64Data.split(',')[1]);
  const blob = Utilities.newBlob(bytes, contentType, fileName);
  const file = folder.createFile(blob);
  file.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.VIEW);
  return file.getId();
}

function saveData(data) {
  const sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(SHEET_NAME);
  const isEdit = data.id ? true : false;
  let targetRowIndex = -1;

  if (isEdit) {
    const values = sheet.getDataRange().getValues();
    for (let i = 1; i < values.length; i++) {
      if (values[i][0] === data.id) {
        targetRowIndex = i + 1;
        break;
      }
    }
  }

  let headerImgId = data.existingHeaderImgId || "";
  if (data.headerImg) headerImgId = uploadToDrive(data.headerImg, 'header_' + data.name);
  
  let extraImageData = [];
  if (data.existingExtraImages) {
    try { extraImageData = JSON.parse(data.existingExtraImages); } catch(e){}
  }
  if (data.extraImages && data.extraImages.length > 0) {
    data.extraImages.forEach((item, index) => {
      if (item.base64) {
        const id = uploadToDrive(item.base64, 'extra_' + data.name + '_' + index);
        extraImageData.push({ id: id, caption: item.caption });
      }
    });
  }

  const row = [
    isEdit ? data.id : Utilities.getUuid(), data.name, headerImgId, data.headerCaption,
    data.family, data.subfamily, data.genus, data.scientificName, data.size,
    JSON.stringify(data.locations), data.distribution, data.seasons.join(','),
    data.description, JSON.stringify(extraImageData), data.notes, new Date()
  ];
  
  if (isEdit && targetRowIndex !== -1) {
    sheet.getRange(targetRowIndex, 1, 1, row.length).setValues([row]);
    return "図鑑の「" + data.name + "」を更新しました！";
  } else {
    sheet.appendRow(row);
    return "図鑑に「" + data.name + "」を新規登録しました！";
  }
}

function getInsects() {
  const sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName(SHEET_NAME);
  const values = sheet.getDataRange().getDisplayValues();
  if (values.length <= 1) return [];
  const header = values.shift();
  return values.map(row => {
    let obj = {};
    header.forEach((h, i) => obj[h] = row[i]);
    return obj;
  });
}