package producers

import (
	"github.com/streadway/amqp"
	"matchmaking-system/internal/conf"
	"matchmaking-system/internal/pkg/flags"
	"matchmaking-system/internal/pkg/logging/applogger"
)

// ProducerEntrust
// @Description:
type ProducerEntrust struct {
	Conn    *amqp.Connection
	Channel *amqp.Channel
	Queue   *amqp.Queue
}

// NewEntrust
//
//	@Description: 初始化生产者持仓消息队列
//	@param f
//	@param con
//	@return *ProducerEntrust
//	@return error
func NewEntrust(f *conf.Data, con *amqp.Connection) (*ProducerEntrust, error) {
	var err error
	var queue amqp.Queue
	p := new(ProducerEntrust)

	// Producer Link Service
	p.Conn = con

	// Create a producer message channel
	p.Channel, err = p.Conn.Channel()
	if err != nil {
		applogger.Error("channel err:%v", err)
		return p, err
	}

	// Declare a queue
	queue, err = p.Channel.QueueDeclare(
		f.Mq.Position,
		true,
		false,
		false,
		false,
		nil,
	)
	p.Queue = &queue

	return p, nil
}

// PushNotice
//
//	@Description: 生产者推送消息
//	@receiver p
//	@param msgCache
//	@return error
func (p *ProducerEntrust) PushNotice(msgCache []byte) error {
	if err := p.DealPublish(msgCache); err != nil {
		applogger.Info("send message exception err:%v", err)
		// TODO: 处理消息推送异常情况(需要尝试再次链接)

		return err
	}

	return nil
}

// DealPublish
//
//	@Description: 处理推送消息
//	@receiver p
//	@param body
//	@return error
func (p *ProducerEntrust) DealPublish(body []byte) error {
	err := p.Channel.Publish(
		flags.SetNull,
		p.Queue.Name,
		false,
		false,
		amqp.Publishing{
			ContentType: "text/plain",
			Body:        body,
		})
	if err != nil {
		applogger.Error("message sending exception:%v", err)
		return err
	}

	return nil
}