package providers

import (
	"context"

	"git.wenlab.co/joe/beaconfire"
	"github.com/slack-go/slack"
)

const BEACON_NAME_SLACK = "slack"

type OptionsSlack struct {
	AuthToken string
	To        []string
}

type slackfire struct {
	opt *OptionsSlack
}

var _ beaconfire.BeaconFire = &slackfire{}

func NewSlackfire(opt *OptionsSlack) *slackfire {
	return &slackfire{
		opt: opt,
	}
}

func (c slackfire) Name() string {
	return BEACON_NAME_SLACK
}

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

	s := slack.New(c.opt.AuthToken)
	for _, channel := range c.opt.To {
		if _, _, err := s.PostMessageContext(
			context.TODO(),
			channel,
			slack.MsgOptionText(bp.Content, false)); err != nil {
			return err
		}
	}
	return nil
}