INC-1 add create user endpoint,generate tokens

src/main/java/ru/soune/no_copy/service/AuthService.java

@@ -1,7 +1,60 @@
 package ru.soune.no_copy.service;
 
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.MessageSource;
+import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import ru.soune.no_copy.dto.RegisterRequest;
+import ru.soune.no_copy.entity.AuthToken;
+import ru.soune.no_copy.entity.User;
+import ru.soune.no_copy.exception.UserAlreadyExistsException;
+import ru.soune.no_copy.repository.AuthTokenRepository;
+import ru.soune.no_copy.repository.UserRepository;
+
+import java.security.SecureRandom;
+import java.time.LocalDateTime;
+import java.util.HexFormat;
+import java.util.Locale;
 
 @Service
+@RequiredArgsConstructor
 public class AuthService {
+
+    private final UserRepository userRepository;
+
+    private final AuthTokenRepository authTokenRepository;
+
+    private final PasswordEncoder passwordEncoder;
+
+    private final MessageSource messageSource;
+
+    @Transactional
+    public AuthToken register(RegisterRequest registerRequest) {
+        if (userRepository.existsByEmail(registerRequest.email())) {
+            throw new UserAlreadyExistsException(messageSource.getMessage("error.user.exists", null,
+                    Locale.getDefault()));
+        }
+
+        User user = new User();
+        user.setFirstName(registerRequest.firstName());
+        user.setSecondName(registerRequest.secondName());
+        user.setLastName(registerRequest.lastName());
+        user.setEmail(registerRequest.email());
+        user.setPassword(passwordEncoder.encode(registerRequest.password()));
+
+        User savedUser = userRepository.save(user);
+
+        AuthToken authToken = new AuthToken();
+        authToken.setToken(generateToken());
+        authToken.setUser(savedUser);
+
+        return authTokenRepository.save(authToken);
+    }
+
+    private String generateToken() {
+        byte[] bytes = new byte[32];
+        new SecureRandom().nextBytes(bytes);
+        return HexFormat.of().formatHex(bytes);
+    }
 }