package main

import (
	"errors"

	"github.com/streadway/amqp"
)

func (s MQSession) Open() error {
	if s.isConnected {
		return errors.New("Session is already connected.")
	}

	if SLL == false {
		s.MQConnection, err = amqp.Dial("amqp://" + Session.User + ":" + Session.Password + "@" + Session.Host + "/" + Session.Path)
	} else {
		return errors.New("SSL connection not implemented")
	}
	logOnError(err, "Open : Failed to connect to RabbitMQ")
	if err != nil {
		s.MQConnection.Close()
		return err
	}
	s.MQChannel, err = s.MQConnection.Channel()
	logOnError(err, "Open : Failed to open channel")
	if err != nil {
		s.MQChannel.Close()
		s.MQConnection.Close()
		return err
	}
	s.MQQueue, err = s.Channel.QueueDeclare(
		s.Queue, // name
		false,   // durable
		false,   // delete when unused
		false,   // exclusive
		false,   // no-wait
		nil,     // arguments

	)
	logOnError(err, "Open : Failed to declare queue")
	if err != nil {
		s.MQChannel.Close()
		s.MQConnection.Close()
		return err
	}
	s.MQDelivery, err = s.MQChannel.Consume(
		s.MQQueue.Name, // queue
		"",             // consumer
		true,           // auto-ack
		false,          // exclusive
		false,          // no-local
		false,          // no-wait
		nil,            // args
	)
	logOnError(err, "Open : Failed to register a consumer")
	if err != nil {
		s.MQChannel.Close()
		s.MQConnection.Close()
		return err
	}
	s.isConnected = true
	return nil
}

func (s MQSession) Publish(content string, msg string) error {
	err := s.MQChannel.Publish(
		"",             // exchange
		s.MQQueue.Name, // routing key
		false,          // mandatory
		false,          // immediate
		amqp.Publishing{
			ContentType: content,
			Body:        []byte(m),
		})
	logOnError(err, "Publish : Publish")
	if err != nil {
		return err
	}
	return nil
}

func (s MQSession) Close() {
	if s.isConnected {
		s.MQChannel.Close()
		s.MQConnection.Close()
		s.isConnected = false
	}
	return
}