package containers

import "sync"

type LockableStack[T any] struct {
	sync.Mutex
	data []T
}

func (s *LockableStack[T]) Push(t T) {
	s.Lock()
	defer s.Unlock()

	s.data = append(s.data, t)
}

func (s *LockableStack[T]) Pop() (T, bool) {
	s.Lock()
	defer s.Unlock()

	if len(s.data) == 0 {
		var t T
		return t, false
	}
	res := s.data[len(s.data)-1]
	s.data = s.data[:len(s.data)-1]
	return res, true
}

func NewLockableStack[T any]() *LockableStack[T] {
	return &LockableStack[T]{}
}