package helpers

import (
	"math"
	"time"

	"git.fjla.uk/owlboard/timetable-mgr/log"
	"go.uber.org/zap"
)

// Implements an exponential backoff strategy and sleeps for a duration calculated as 1 second to the power of (attempt - 1).
// The backoff time doubles with each attempt, starting from 1 second for the first attempt.
func BackoffDelay(attempt int) {
	base := time.Second
	backoff := base * time.Duration(math.Pow(2, float64(attempt-1)))
	log.Info("Retry backoff", zap.Duration("delay", backoff))
	time.Sleep(backoff)
}