package bot

import (
	"context"
	"fmt"
	"time"

	"git.faercol.me/faercol/public-ip-tracker/tracker/config"
	"git.faercol.me/faercol/public-ip-tracker/tracker/ip"
	"github.com/ahugues/go-telegram-api/bot"
)

type Notifier struct {
	ctx          context.Context
	cancel       context.CancelFunc
	tgBot        *bot.ConcreteBot
	notifChannel int64
	ipGetter     *ip.IPGetter
}

func (n *Notifier) SendInitMessage() error {
	publicIP, err := n.ipGetter.GetCurrentPublicIP(n.ctx)
	if err != nil {
		return fmt.Errorf("failed to get current public IP: %w", err)
	}

	initMsg := fmt.Sprintf("Public IP tracker initialized at %v, public IP is %s", time.Now(), publicIP)
	if err := n.tgBot.SendMessage(n.ctx, n.notifChannel, initMsg); err != nil {
		return fmt.Errorf("failed to send initialization message: %w", err)
	}
	return nil
}

func New(ctx context.Context, config *config.Config) *Notifier {
	subCtx, cancel := context.WithCancel(ctx)
	tgBot := bot.New(config.Telegram.Token)

	return &Notifier{
		ctx:          subCtx,
		cancel:       cancel,
		tgBot:        tgBot,
		notifChannel: config.Telegram.ChannelID,
		ipGetter:     ip.New(),
	}
}