Post Message through LINE Notify

// Post message to LINE via LINE Notify (ver. 202304)

// OAuth2 config sample at [OAuth 2.0 Setting]
// - Authorization Endpoint URL: https://notify-bot.line.me/oauth/authorize
// - Token Endpoint URL: https://notify-bot.line.me/oauth/token
// - Scope: notify
// - Consumer Key: (Get by LINE Notify)
// - Consumer Secret: (Get by LINE Notify)

main();

function main(){

//// == Config Retrieving / 工程コンフィグの参照 ==
const oauth2     = configs.get( "conf_OAuth2" ) + "";
const message    = configs.get( "conf_Message" ) + "";
const dataId_log = configs.get( "conf_log" );

//// == 演算 / Calculating ==
let accessLog = "";

//check length of message
messageCheck(message);

//send message to LINE Notify API
let response = httpClient.begin()
  .authSetting( oauth2 )
  .multipart("message", message)
  .post('https://notify-api.line.me/api/notify');
accessLog += "---POST request--- " + response.getStatusCode() + "\n";
accessLog += response.getResponseAsString() + "\n";
engine.log("res:" + response.getResponseAsString());

const status = response.getStatusCode();
if( status >= 300 ){
  engine.log(accessLog);
  throw `Failed in POST request. status: ${status}`;
}

//// == ワークフローデータへの代入 / Data Updating ==
if ( dataId_log !== "" ) {
  engine.setDataByNumber( dataId_log, accessLog );
}

}

function messageCheck(message) {
  if (message == null) {
    throw "Message is empty."
  } else if (message.length > 1000) {
    throw("Message Length over 1000");
  }
}