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package io.lsn.spring.auth.service;

import io.lsn.spring.auth.authentication.strategy.AuthenticationStrategy;
import io.lsn.spring.auth.configuration.properties.SecurityProperties;
import io.lsn.spring.auth.entity.User;
import io.lsn.spring.utilities.configuration.condition.ConditionalOnConfiguration;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.stereotype.Service;

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

/**
 * @author Patryk Szlagowski 
 */
@ConditionalOnConfiguration(name = "io.lsn.spring.auth", type = ConditionalOnConfiguration.Type.SERVICE)
@Service
public class UserProviderService implements UserProvider {

    @Autowired
    private AbstractUserService service;
    @Autowired
    private SecurityProperties properties;
    @Autowired
    private List authenticationStrategies;

    @Override
    public User findByApiToken(String token) throws Exception {
        return service.findByApiToken(token);
    }

    @Override
    public User findByUsername(String username) throws Exception {
        return service.findByUsername(username);
    }

    @Override
    public void terminateApiToken(User user) throws Exception {
        service.terminateApiToken(user);
    }

    @Override
    public void authenticate(User user, String password) throws Exception {
        boolean match = authenticationStrategies
                .stream()
                .filter(strategy -> strategy.supports(user.getAuthenticationStrategy()))
                .map(strategy -> strategy.authenticate(user, password))
                .collect(Collectors.toList())
                .get(0);

        if (!match) {
            throw new BadCredentialsException("");
        }
        assignNewApiToken((User) user);
        return;
    }

    @Override
    public void assignNewApiToken(User user) throws Exception {
        service.assignNewApiToken(user);
    }

    @Override
    public void extendExistingApiToken(User user) throws Exception {
        user.getApiToken().calculateDate(properties.getToken().getTtlForRenewal());
        service.updateApiToken(user);
    }
}