feat: UserService implementation

src/main/java/eu/ztsh/wymiana/service/UserService.java

@@ -1,7 +1,9 @@
 package eu.ztsh.wymiana.service;
 
 import eu.ztsh.wymiana.data.repository.UserRepository;
+import eu.ztsh.wymiana.exception.UserAlreadyExistsException;
 import eu.ztsh.wymiana.model.User;
+import eu.ztsh.wymiana.util.UserMapper;
 import eu.ztsh.wymiana.web.model.UserCreateRequest;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
@@ -15,13 +17,15 @@ public class UserService {
 
     private final UserRepository userRepository;
 
-
     public User create(@Valid UserCreateRequest request) {
-        throw new IllegalStateException("Not impplemented yet");
+        if (userRepository.findById(request.pesel()).isPresent()) {
+            throw new UserAlreadyExistsException(request);
+        }
+        return UserMapper.entityToPojo(userRepository.save(UserMapper.requestToEntity(request)));
     }
 
     public Optional<User> get(String pesel) {
-        throw new IllegalStateException("Not impplemented yet");
+        return userRepository.findById(pesel).map(UserMapper::entityToPojo);
     }
 
 }

src/main/java/eu/ztsh/wymiana/util/UserMapper.java

@@ -1,7 +1,11 @@
 package eu.ztsh.wymiana.util;
 
+import eu.ztsh.wymiana.data.entity.CurrencyEntity;
 import eu.ztsh.wymiana.data.entity.UserEntity;
 import eu.ztsh.wymiana.model.User;
+import eu.ztsh.wymiana.web.model.UserCreateRequest;
+
+import java.util.List;
 
 public class UserMapper {
 
@@ -10,6 +14,11 @@ public class UserMapper {
             CurrencyMapper.entitiesToPojoMap(entity.getCurrencies()));
     }
 
+    public static UserEntity requestToEntity(UserCreateRequest request) {
+        return new UserEntity(request.pesel(), request.name(), request.surname(),
+            List.of(new CurrencyEntity(request.pesel(), "PLN", request.pln())));
+    }
+
     private UserMapper() {
     }
 

src/test/java/eu/ztsh/wymiana/EntityCreator.java

@@ -2,6 +2,7 @@ package eu.ztsh.wymiana;
 
 import eu.ztsh.wymiana.data.entity.CurrencyEntity;
 import eu.ztsh.wymiana.data.entity.UserEntity;
+import eu.ztsh.wymiana.web.model.UserCreateRequest;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -22,6 +23,10 @@ public class EntityCreator {
         return new UserEntityBuilder();
     }
 
+    public static UserCreateRequest userRequest() {
+        return new UserCreateRequest(Constants.NAME, Constants.SURNAME, Constants.PESEL, Constants.PLN);
+    }
+
     public static class UserEntityBuilder {
 
         String name;

src/test/java/eu/ztsh/wymiana/service/UserServiceTest.java

@@ -6,6 +6,7 @@ import eu.ztsh.wymiana.data.repository.UserRepository;
 import eu.ztsh.wymiana.exception.UserAlreadyExistsException;
 import eu.ztsh.wymiana.util.UserMapper;
 import eu.ztsh.wymiana.web.model.UserCreateRequest;
+import jakarta.transaction.Transactional;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 
@@ -23,16 +24,17 @@ class UserServiceTest extends RepositoryBasedTest {
     }
 
     @Test
+    @Transactional
     void createNewUserTest() {
-        userService.create(createRequest());
+        userService.create(EntityCreator.userRequest());
         var entity = EntityCreator.user().build();
         expect(entity);
     }
 
     @Test
     void createDuplicatedUser() {
-        var first = createRequest();
-        var second = createRequest();
+        var first = EntityCreator.userRequest();
+        var second = EntityCreator.userRequest();
         userService.create(first);
         assertThatThrownBy(() -> userService.create(second))
             .isInstanceOf(UserAlreadyExistsException.class)
@@ -40,6 +42,7 @@ class UserServiceTest extends RepositoryBasedTest {
     }
 
     @Test
+    @Transactional
     void getExistingUserTest() {
         var entity = EntityCreator.user().build();
         userRepository.save(entity);
@@ -58,9 +61,4 @@ class UserServiceTest extends RepositoryBasedTest {
         assertThat(userOptional).isEmpty();
     }
 
-    private UserCreateRequest createRequest() {
-        return new UserCreateRequest(EntityCreator.Constants.NAME, EntityCreator.Constants.SURNAME,
-            EntityCreator.Constants.PESEL, 20.10);
-    }
-
 }

src/test/java/eu/ztsh/wymiana/util/UserMapperTest.java

@@ -25,4 +25,13 @@ class UserMapperTest {
             .isEqualTo(expected);
     }
 
+    @Test
+    void requestToEntityTest() {
+        var request = EntityCreator.userRequest();
+        var expected = EntityCreator.user().build();
+        assertThat(UserMapper.requestToEntity(request))
+            .usingRecursiveComparison()
+            .isEqualTo(expected);
+    }
+
 }