// File: utils/sleep.go
package utils

import (
	"log"
	"math/rand"
	"time"
)

func init() {
	// Seed the RNG once when the package is initialized
	rand.Seed(time.Now().UnixNano())
}

// SleepWithJitter sleeps for the given base duration plus or minus 25% random jitter.
// It also logs the actual sleep duration so you can verify it fired correctly.
func SleepWithJitter(base time.Duration) {
	half := base / 2
	// Random value in [0, half)
	randOffset := time.Duration(rand.Int63n(int64(half)))
	// Shift to center jitter around zero: [-half/2, +half/2)
	delta := randOffset - half/2
	actual := base + delta
	log.Printf("⏱️  Sleeping for %v (base=%v, jitter=%v)", actual, base, delta)
	time.Sleep(actual)
}