package kk_sync

import (
	"sync"
)

type Slice[T any] struct {
	slice   []T
	rwMutex *sync.RWMutex
}

func NewSlice[T any]() *Slice[T] {
	return &Slice[T]{
		slice:   make([]T, 0),
		rwMutex: &sync.RWMutex{},
	}
}

func (s *Slice[T]) Append(elems ...T) {
	s.rwMutex.Lock()
	defer s.rwMutex.Unlock()
	s.slice = append(s.slice, elems...)
}

func (s *Slice[T]) Slice() []T {
	s.rwMutex.RLock()
	defer s.rwMutex.RUnlock()
	return s.slice
}

func (s *Slice[T]) Len() int {
	s.rwMutex.RLock()
	defer s.rwMutex.RUnlock()
	return len(s.slice)
}

func (s *Slice[T]) Copy() *Slice[T] {
	s.rwMutex.RLock()
	defer s.rwMutex.RUnlock()
	slice := NewSlice[T]()
	copy(slice.slice, s.slice)
	return slice
}