package holy

import (
	"tg-holy-bot/internal/log"
	"time"
)

const maxRetryAttempts = 15

// CronTask sends generated holiday list to the channel.
func CronTask() {
	var (
		err     error
		errcnt  int
		phrase  string
		timeout time.Duration
	)

	log.Info("Cron Task triggered")

	for {
		phrase, err = APIClient()

		if err != nil {
			errcnt++

			log.Errorf("Unable to get holidays (try %d/%d): %s", errcnt, maxRetryAttempts, err)

			switch errcnt {
			case 1, 2:
				timeout = 1 * time.Second

			case 3, 4, 5:
				timeout = 5 * time.Second

			case 6, 7, 8:
				timeout = 1 * time.Minute

			case 9, 10, 11:
				timeout = 5 * time.Minute

			case 12, 13, 14:
				timeout = 1 * time.Hour

			default:
				log.Error("Giveup trying to get holidays")

				return
			}
		} else {
			break
		}

		time.Sleep(timeout)
	}

	if _, err = Bot.SendMessage(phrase, Config.ChannelID, nil); err != nil {
		log.Errorf("Unable to send message to channel: %s", err)
	}
}

/* vim: set ft=go noet ai ts=4 sw=4 sts=4: */