package rabbitmq

import (
	"fmt"

	"clickandjoin.app/emailserver/modules/config"
	amqp "github.com/rabbitmq/amqp091-go"
	"github.com/sirupsen/logrus"
)

var Conn *amqp.Connection
var Channel *amqp.Channel

const queueMails = "cnj.mails"

func getConnectionString() string {
	cfg := &config.Cfg.RabbitMq

	return fmt.Sprintf("amqp://%s:%s@%s/", cfg.Username, cfg.Password, cfg.Host)
}

func Init() {
	conn, err := amqp.Dial(getConnectionString())

	if err != nil {
		logrus.Fatalln("RabbitMQ connection failed, err:", err)
	}

	ch, err := conn.Channel()

	if err != nil {
		logrus.Fatalln(err)
	}

	Channel = ch

	err = ch.Qos(
		1,     // prefetch count
		0,     // prefetch size
		false, // global
	)

	if err != nil {
		logrus.Fatalln("Failed to set Qos, err:", err)
	}

	msgs, err := ch.Consume(
		queueMails, // queue
		"",         // consumer
		false,      // auto-ack
		false,      // exclusive
		false,      // no-local
		false,      // no-wait
		nil,        // args
	)

	if err != nil {
		logrus.Fatalln("Failed to consume mails, err:", err)
	}

	var forever chan struct{}

	go func() {
		for d := range msgs {
			logrus.Printf("Received a message: %s", d.Body)
		}
	}()

	<-forever
}