(TP-105) feat: add and impl SecurityService

Author: Kattsyn

rentplace/src/main/java/kattsyn/dev/rentplace/services/SecurityService.java

@@ -0,0 +1,12 @@
+package kattsyn.dev.rentplace.services;
+
+import jakarta.security.auth.message.AuthException;
+import kattsyn.dev.rentplace.entities.User;
+
+public interface SecurityService {
+
+    String getCurrentUserEmail() throws AuthException;
+    User getCurrentUser() throws AuthException;
+    Long getCurrentUserId() throws AuthException;
+
+}

rentplace/src/main/java/kattsyn/dev/rentplace/services/impl/SecurityServiceImpl.java

@@ -0,0 +1,40 @@
+package kattsyn.dev.rentplace.services.impl;
+
+import jakarta.security.auth.message.AuthException;
+import kattsyn.dev.rentplace.entities.User;
+import kattsyn.dev.rentplace.exceptions.NotFoundException;
+import kattsyn.dev.rentplace.repositories.UserRepository;
+import kattsyn.dev.rentplace.services.SecurityService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class SecurityServiceImpl implements SecurityService {
+
+    private final UserRepository userRepository;
+
+    @Override
+    public String getCurrentUserEmail() throws AuthException {
+        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+        if (auth == null || !auth.isAuthenticated() || "anonymousUser".equals(auth.getName())) {
+            throw new AuthException("Пользователь не авторизован");
+        }
+        Object principal = auth.getPrincipal();
+        return (principal instanceof User) ? ((User) principal).getEmail() : principal.toString();
+    }
+
+    @Override
+    public User getCurrentUser() throws AuthException {
+        String email = getCurrentUserEmail();
+        return userRepository.findByEmail(email)
+                .orElseThrow(() -> new NotFoundException(String.format("User with email %s not found", email)));
+    }
+
+    @Override
+    public Long getCurrentUserId() throws AuthException {
+        return getCurrentUser().getUserId();
+    }
+}