package store

import (
	"sync"
)

// MemoryStore is an in-memory implementation of the Store interface.
type MemoryStore struct {
	data map[string]string
	mu   sync.RWMutex
}

// NewMemoryStore creates a new MemoryStore.
func NewMemoryStore() *MemoryStore {
	return &MemoryStore{
		data: make(map[string]string),
	}
}

// Get retrieves a value from the store.
func (s *MemoryStore) Get(key string) (string, bool, error) {
	s.mu.RLock()
	defer s.mu.RUnlock()
	val, ok := s.data[key]
	return val, ok, nil
}

// Set adds a value to the store.
func (s *MemoryStore) Set(key, value string) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	s.data[key] = value
	return nil
}

// Del removes a value from the store.
func (s *MemoryStore) Del(key string) error {
	s.mu.Lock()
	defer s.mu.Unlock()
	delete(s.data, key)
	return nil
}