package ru.kirillius.pf.sdn.service;

import lombok.RequiredArgsConstructor;
import lombok.Setter;
import org.springframework.stereotype.Service;
import ru.kirillius.pf.sdn.api.Networking.IPv4Subnet;
import ru.kirillius.pf.sdn.entity.AutonomousSystemCacheEntry;
import ru.kirillius.pf.sdn.repository.AutonomousSystemCacheRepository;

import java.util.List;
import java.util.Optional;

@Setter
@RequiredArgsConstructor
@Service
public class AutonomousSystemCacheService {
    private final AutonomousSystemCacheRepository repository;

    public void store(int number, List<IPv4Subnet> subnets) {
        synchronized (repository) {
            if (repository.existsByNumber(number)) {
                repository.findByNumber(number).ifPresent(entry -> {
                    entry.setPrefixes(subnets);
                    repository.save(entry);
                });
            } else {
                repository.save(AutonomousSystemCacheEntry.builder().number(number).prefixes(subnets).build());
            }
        }
    }

    public Optional<AutonomousSystemCacheEntry> load(int number) {
        synchronized (repository) {
            return repository.findByNumber(number);
        }
    }
}