backend/restservice/src/main/java/com/plannaplan/security/AuthenticationProvider.java

package com.plannaplan.security;

import java.util.Collection;

import com.plannaplan.entities.User;
import com.plannaplan.services.UserService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

@Component
public class AuthenticationProvider extends AbstractUserDetailsAuthenticationProvider {

    @Autowired
    private UserService userService;

    @Override
    protected void additionalAuthenticationChecks(UserDetails userDetails,
            UsernamePasswordAuthenticationToken authentication) throws AuthenticationException {
        // is being done in other task

    }

    @Override
    protected UserDetails retrieveUser(String username, UsernamePasswordAuthenticationToken authentication)
            throws AuthenticationException {

        String token = authentication.getCredentials().toString();

        User user = this.userService.getByToken(token);

        if (user == null) {
            throw new UsernameNotFoundException("Cannot find user with authentication token=" + token);
        }

        UserDetails response = new UserDetails() {

            /**
             *
             */
            private static final long serialVersionUID = 1L;

            @Override
            public Collection<? extends GrantedAuthority> getAuthorities() {
                // is being done in other task
                return null;
            }

            @Override
            public String getPassword() {
                return null;
            }

            @Override
            public String getUsername() {
                return user.getName() + " " + user.getSurname();
            }

            @Override
            public boolean isAccountNonExpired() {
                return true;
            }

            @Override
            public boolean isAccountNonLocked() {
                return true;
            }

            @Override
            public boolean isCredentialsNonExpired() {
                // is being done in other task
                return true;
            }

            @Override
            public boolean isEnabled() {
                return true;
            }

        };

        return response;
    }

}