security

src/main/java/site/easystartup/web/service/AuthService.java

@@ -0,0 +1,36 @@
+package site.easystartup.web.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import site.easystartup.web.domain.exception.UserExistException;
+import site.easystartup.web.domain.model.Role;
+import site.easystartup.web.domain.model.User;
+import site.easystartup.web.domain.request.SignupRequest;
+import site.easystartup.web.repo.UserRepo;
+
+import java.util.HashSet;
+import java.util.Set;
+
+@Service
+@RequiredArgsConstructor
+public class AuthService {
+    private final UserRepo userRepo;
+    private final PasswordEncoder passwordEncoder;
+
+    public User createUser(SignupRequest signupRequest) {
+        if (userRepo.findUserByUsername(signupRequest.getUsername()).isPresent()) {
+            throw new UserExistException("An account with this username already exists.");
+        }
+
+        User user = new User();
+        user.setEmail(signupRequest.getEmail());
+        user.setUsername(signupRequest.getUsername());
+        user.setPassword(passwordEncoder.encode(signupRequest.getPassword()));
+        Set<Role> roles = new HashSet<>();
+        signupRequest.getRoles().forEach(role -> roles.add(Role.valueOf(role)));
+        user.setRoles(roles);
+
+        return userRepo.save(user);
+    }
+}