package providers

import (
	"git.wenlab.co/joe/beaconfire"
	h2t "github.com/jaytaylor/html2text"
	mailgun "github.com/mailgun/mailgun-go"
)

const (
	BEACON_NAME_MAILGUN = "mailgun"
)

type OptionsMailgun struct {
	Domain          string
	ApiKey          string
	DisableTracking bool
	From            string
	To              []string
}

type mailgunfire struct {
	opt *OptionsMailgun
}

var _ beaconfire.BeaconFire = &mailgunfire{}

func NewMailgunfire(opt *OptionsMailgun) *mailgunfire {
	return &mailgunfire{opt: opt}
}

func (c mailgunfire) Name() string {
	return BEACON_NAME_MAILGUN
}

func (c *mailgunfire) Send(bp *beaconfire.BeaconMessage) error {
	if len(c.opt.To) == 0 {
		return beaconfire.ErrNoReceiver
	}

	mg := mailgun.NewMailgun(c.opt.Domain, c.opt.ApiKey)
	content := bp.Content
	inHtml := true //format == "html"
	if inHtml {
		if t, err := h2t.FromString(bp.Content); err == nil {
			content = t
		}
	}

	msg := mg.NewMessage(c.opt.From, bp.Title, content, c.opt.To...)
	if inHtml {
		msg.SetHtml(content)
	}

	msg.SetTracking(!c.opt.DisableTracking)
	msg.SetTrackingClicks(!c.opt.DisableTracking)
	msg.SetTrackingOpens(!c.opt.DisableTracking)
	_, _, err := mg.Send(msg)
	return err
}