package spring.repository.social;

import org.springframework.social.connect.*;
import org.springframework.stereotype.Component;
import spring.domain.SocialUserConnection;
import spring.repository.SocialUserConnectionRepository;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

@Component
public class CustomSocialUsersConnectionRepository implements UsersConnectionRepository {

    private SocialUserConnectionRepository socialUserConnectionRepository;

    private ConnectionFactoryLocator connectionFactoryLocator;

    public CustomSocialUsersConnectionRepository() {;
    }

    public CustomSocialUsersConnectionRepository(SocialUserConnectionRepository socialUserConnectionRepository, ConnectionFactoryLocator connectionFactoryLocator) {
        this.socialUserConnectionRepository = socialUserConnectionRepository;
        this.connectionFactoryLocator = connectionFactoryLocator;
    }

    @Override
    public List<String> findUserIdsWithConnection(Connection<?> connection) {
        ConnectionKey key = connection.getKey();
        List<SocialUserConnection> socialUserConnections =
            socialUserConnectionRepository.findAllByProviderIdAndProviderUserId(key.getProviderId(), key.getProviderUserId());
        return socialUserConnections.stream()
            .map(SocialUserConnection::getUserId)
            .collect(Collectors.toList());
    };

    @Override
    public Set<String> findUserIdsConnectedTo(String providerId, Set<String> providerUserIds) {
        List<SocialUserConnection> socialUserConnections =
            socialUserConnectionRepository.findAllByProviderIdAndProviderUserIdIn(providerId, providerUserIds);
        return socialUserConnections.stream()
            .map(SocialUserConnection::getUserId)
            .collect(Collectors.toSet());
    };

    @Override
    public ConnectionRepository createConnectionRepository(String userId) {
        if (userId == null) {
            throw new IllegalArgumentException("userId cannot be null");
        }
        return new CustomSocialConnectionRepository(userId, socialUserConnectionRepository, connectionFactoryLocator);
    };
}