package publisher

import (
	"bytes"
	"context"
	"encoding/json"

	cml04eventer "git.espin.casa/albert/cml04-eventer"
	"github.com/nats-io/nats.go"
)

type Publisher interface {
	NewBarcode(ctx context.Context, barcode string) error
	ComfirmedBundle(ctx context.Context, barcode string) error
}

type publisher struct {
	nc *nats.Conn
}

func (e *publisher) ComfirmedBundle(ctx context.Context, barcode string) error {
	// create event message
	evt := cml04eventer.NewEvent("falcon-handset", "bundle.confirmed", nil, []byte(barcode))
	// create buffer message data
	buf := bytes.Buffer{}
	// encode message
	if err := json.NewEncoder(&buf).Encode(evt); err != nil {
		return err
	}
	// publish event message
	return e.nc.Publish("bundle.confirmed", buf.Bytes())
}

func (e *publisher) NewBarcode(ctx context.Context, barcode string) error {
	// create event message
	evt := cml04eventer.NewEvent("falcon-handset", "barcode.new", nil, []byte(barcode))
	// create buffer message data
	buf := bytes.Buffer{}
	// encode message
	if err := json.NewEncoder(&buf).Encode(evt); err != nil {
		return err
	}
	// publish event message
	return e.nc.Publish("barcode.new", buf.Bytes())
}

func New(nc *nats.Conn) Publisher {
	return &publisher{
		nc: nc,
	}
}