var CHANNEL_ACCESS_TOKEN = "วาง Channel Access Token ของท่านที่นี่";

function doPost(e) {
  try {
    var contents = e.postData.contents;
    var params = JSON.parse(contents);
    
    // CASE 1: Receive event from LINE Webhook (Get Group ID)
    if (params.events && params.events.length > 0) {
      var event = params.events[0];
      var replyToken = event.replyToken;
      var text = event.message && event.message.text ? event.message.text.trim() : "";
      
      if (text === "ขอไอดี" || text === "ขอไอดีกลุ่ม" || text === "/id") {
        var targetId = event.source.groupId || event.source.roomId || event.source.userId;
        replyLine(replyToken, "รหัสเป้าหมายสำหรับระบบ Autohub ของท่านคือ:\n\n" + targetId);
      }
      return ContentService.createTextOutput("OK");
    }
    
    // CASE 2: Send Outbound Notifications
    // 1. Send Email
    if (params.to_email && params.message) {
      MailApp.sendEmail(params.to_email, params.subject, params.message);
    }
    
    // 2. Send LINE OA Push Message
    if (params.line_token && params.line_target && params.line_message) {
      pushLineMessage(params.line_token, params.line_target, params.line_message);
    }
    
    return ContentService.createTextOutput(JSON.stringify({ "status": "success" }))
      .setMimeType(ContentService.MimeType.JSON);
  } catch(err) {
    return ContentService.createTextOutput(JSON.stringify({ "status": "error", "message": err.message }))
      .setMimeType(ContentService.MimeType.JSON);
  }
}

function replyLine(replyToken, text) {
  var url = "https://api.line.me/v2/bot/message/reply";
  var payload = {
    "replyToken": replyToken,
    "messages": [{ "type": "text", "text": text }]
  };
  var options = {
    "method": "post",
    "headers": {
      "Content-Type": "application/json",
      "Authorization": "Bearer " + CHANNEL_ACCESS_TOKEN
    },
    "payload": JSON.stringify(payload)
  };
  UrlFetchApp.fetch(url, options);
}

function pushLineMessage(token, targetId, text) {
  var url = "https://api.line.me/v2/bot/message/push";
  var payload = {
    "to": targetId,
    "messages": [{ "type": "text", "text": text }]
  };
  var options = {
    "method": "post",
    "headers": {
      "Content-Type": "application/json",
      "Authorization": "Bearer " + token
    },
    "payload": JSON.stringify(payload)
  };
  UrlFetchApp.fetch(url, options);
}

• เรียกใช้งานในฐานะ: **"ฉัน" (Me)**
• ผู้มีสิทธิ์เข้าถึง: **"ทุกคน" (Anyone)**