Implement UserDetailServiceImpl

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/src/main/java/com/fjordtek/bookstore/service/session/UserDetailServiceImpl.java

@@ -0,0 +1,76 @@
+// Pekka Helenius <fincer89@hotmail.com>, Fjordtek 2020
+
+package com.fjordtek.bookstore.service.session;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+
+import com.fjordtek.bookstore.model.auth.User;
+import com.fjordtek.bookstore.model.auth.UserRepository;
+import com.fjordtek.bookstore.model.auth.UserRole;
+import com.fjordtek.bookstore.model.auth.UserRoleRepository;
+
+/**
+*
+*
+* @author Pekka Helenius
+*/
+
+@Service
+public class UserDetailServiceImpl implements UserDetailsService {
+
+	private UserRepository userRepository;
+	private UserRoleRepository userRoleRepository;
+
+	@Autowired
+	public void instanceAttributeUserDetailsService(
+			UserRepository userRepository,
+			UserRoleRepository userRoleRepository
+			) {
+		this.userRepository = userRepository;
+		this.userRoleRepository = userRoleRepository;
+	}
+
+	/*
+	 * Retrieve user roles from the USER_ROLE table
+	 */
+	private Collection<GrantedAuthority> getUserGrantedAuthorities(String userName) {
+
+		User currentUser = userRepository.findByUsername(userName);
+
+		Collection<GrantedAuthority> authorities = new ArrayList<>();
+
+		for (UserRole role : userRoleRepository.findAll()) {
+
+			if (role.getUser().getId() == currentUser.getId()) {
+				authorities.add(
+						new SimpleGrantedAuthority(role.getRole().getName())
+						);
+			}
+		}
+
+		return authorities;
+	}
+
+	@Override
+	public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
+
+		User currentUser = userRepository.findByUsername(userName);
+
+		UserDetails userDetails = new org.springframework.security.core.userdetails.User(
+				userName, currentUser.getPassword(), getUserGrantedAuthorities(userName)
+				);
+
+		return userDetails;
+
+	}
+
+}