import amqplib from "amqplib";

let channel: amqplib.Channel;

async function connect(
  RABBITMQ_USERNAME: string,
  RABBITMQ_PASSWORD: string,
  RABBITMQ_HOST: string,
  RABBITMQ_PORT: string
) {
  const open = await amqplib.connect(
    `amqp://${RABBITMQ_USERNAME}:${RABBITMQ_PASSWORD}@${RABBITMQ_HOST}:${RABBITMQ_PORT}`
  );

  if (!open) {
    console.log("⚡️[RabbitMQ]: connection failed");
    return;
  }

  channel = await open.createChannel();

  if (!channel) {
    console.log("⚡️[RabbitMQ]: channel failed");
    return;
  }
}

async function sendEmail(
  email: string,
  templateId: string,
  languageId: string,
  bodyData: any
) {
  if (!channel) {
    console.log("⚡️[RabbitMQ]: channel not available");
    return;
  }

  channel.sendToQueue(
    process.env.RABBITMQ_MAIL_QUEUE as string,
    Buffer.from(
      JSON.stringify({
        m: email,
        t: templateId,
        l: languageId,
        b: bodyData,
      })
    )
  );
}

const rabbitmq = {
  connect,
  sendEmail,
};

export default rabbitmq;