added book controller & mapper, added findById functionality

pom.xml

@@ -16,6 +16,7 @@
 	<properties>
 		<java.version>17</java.version>
 		<maven.checkstyle.plugin.configLocation>checkstyle.xml</maven.checkstyle.plugin.configLocation>
+		<org.mapstruct.version>1.5.5.Final</org.mapstruct.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -48,14 +49,18 @@
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
-			<version>3.0.6</version>
 		</dependency>
 
 		<dependency>
 			<groupId>com.h2database</groupId>
 			<artifactId>h2</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct</artifactId>
+			<version>${org.mapstruct.version}</version>
+		</dependency>
 
 	</dependencies>
 
@@ -83,6 +88,33 @@
 					<consoleOutput>true</consoleOutput>
 					<failsOnError>true</failsOnError>
 					<linkXRef>false</linkXRef>
+					<sourceDirectories>src</sourceDirectories>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.1</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+					<annotationProcessorPaths>
+						<path>
+							<groupId>org.mapstruct</groupId>
+							<artifactId>mapstruct-processor</artifactId>
+							<version>${org.mapstruct.version}</version>
+						</path>
+						<path>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+							<version>1.18.28</version>
+						</path>
+						<path>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok-mapstruct-binding</artifactId>
+							<version>0.2.0</version>
+						</path>
+					</annotationProcessorPaths>
 				</configuration>
 			</plugin>
 		</plugins>

src/main/java/mate/academy/bookstore/BookstoreApplication.java

@@ -1,35 +1,11 @@
 package mate.academy.bookstore;
 
-import java.math.BigDecimal;
-import lombok.RequiredArgsConstructor;
-import mate.academy.bookstore.model.Book;
-import mate.academy.bookstore.service.BookService;
-import org.springframework.boot.CommandLineRunner;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.context.annotation.Bean;
 
-@RequiredArgsConstructor
 @SpringBootApplication
 public class BookstoreApplication {
-    private final BookService bookService;
-
     public static void main(String[] args) {
         SpringApplication.run(BookstoreApplication.class, args);
     }
-
-    @Bean
-    public CommandLineRunner commandLineRunner() {
-        return args -> {
-            Book book = new Book();
-            book.setTitle("Book title");
-            book.setAuthor("Book author");
-            book.setIsbn("unique isbn");
-            book.setPrice(BigDecimal.valueOf(700));
-
-            bookService.save(book);
-
-            System.out.println(bookService.findAll());
-        };
-    }
 }

src/main/java/mate/academy/bookstore/config/MapperConfig.java

@@ -0,0 +1,13 @@
+package mate.academy.bookstore.config;
+
+import org.mapstruct.InjectionStrategy;
+import org.mapstruct.NullValueCheckStrategy;
+
+@org.mapstruct.MapperConfig(
+        componentModel = "spring",
+        injectionStrategy = InjectionStrategy.CONSTRUCTOR,
+        nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS,
+        implementationPackage = "<PACKAGE_NAME>.impl"
+)
+public class MapperConfig {
+}

src/main/java/mate/academy/bookstore/controller/BookController.java

@@ -0,0 +1,34 @@
+package mate.academy.bookstore.controller;
+
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import mate.academy.bookstore.dto.BookDto;
+import mate.academy.bookstore.dto.CreateBookRequestDto;
+import mate.academy.bookstore.service.BookService;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RequiredArgsConstructor
+@RestController
+@RequestMapping(value = "/api/books")
+public class BookController {
+    private final BookService bookService;
+
+    @GetMapping
+    public List<BookDto> getAll() {
+        return bookService.findAll();
+    }
+
+    @GetMapping("/{id}")
+    public BookDto getBookById(Long id) {
+        return bookService.findById(id);
+    }
+
+    @PostMapping
+    public BookDto createBook(@RequestBody CreateBookRequestDto bookDto) {
+        return bookService.save(bookDto);
+    }
+}

src/main/java/mate/academy/bookstore/dto/BookDto.java

@@ -0,0 +1,15 @@
+package mate.academy.bookstore.dto;
+
+import java.math.BigDecimal;
+import lombok.Data;
+
+@Data
+public class BookDto {
+    private Long id;
+    private String title;
+    private String author;
+    private String isbn;
+    private BigDecimal price;
+    private String description;
+    private String coverImage;
+}

src/main/java/mate/academy/bookstore/dto/CreateBookRequestDto.java

@@ -0,0 +1,14 @@
+package mate.academy.bookstore.dto;
+
+import java.math.BigDecimal;
+import lombok.Data;
+
+@Data
+public class CreateBookRequestDto {
+    private String title;
+    private String author;
+    private String isbn;
+    private BigDecimal price;
+    private String description;
+    private String coverImage;
+}

src/main/java/mate/academy/bookstore/exceptions/EntityNotFoundException.java

@@ -0,0 +1,7 @@
+package mate.academy.bookstore.exceptions;
+
+public class EntityNotFoundException extends RuntimeException {
+    public EntityNotFoundException(String message) {
+        super(message);
+    }
+}

src/main/java/mate/academy/bookstore/mapper/BookMapper.java

@@ -0,0 +1,14 @@
+package mate.academy.bookstore.mapper;
+
+import mate.academy.bookstore.config.MapperConfig;
+import mate.academy.bookstore.dto.BookDto;
+import mate.academy.bookstore.dto.CreateBookRequestDto;
+import mate.academy.bookstore.model.Book;
+import org.mapstruct.Mapper;
+
+@Mapper(config = MapperConfig.class)
+public interface BookMapper {
+    BookDto toDto(Book book);
+
+    Book toModel(CreateBookRequestDto requestDto);
+}

src/main/java/mate/academy/bookstore/model/Book.java

@@ -25,6 +25,5 @@ public class Book {
     @Column(nullable = false)
     private BigDecimal price;
     private String description;
-    @Column(name = "cover_image")
     private String coverImage;
 }

src/main/java/mate/academy/bookstore/repository/BookRepository.java

@@ -1,10 +1,13 @@
 package mate.academy.bookstore.repository;
 
 import java.util.List;
+import java.util.Optional;
 import mate.academy.bookstore.model.Book;
 
 public interface BookRepository {
     Book save(Book book);
 
     List<Book> findAll();
+
+    Optional<Book> findById(Long id);
 }

src/main/java/mate/academy/bookstore/repository/BookRepositoryImpl.java

@@ -5,19 +5,16 @@
 import jakarta.persistence.EntityTransaction;
 import jakarta.persistence.criteria.CriteriaQuery;
 import java.util.List;
+import java.util.Optional;
+import lombok.RequiredArgsConstructor;
 import mate.academy.bookstore.model.Book;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Repository;
 
+@RequiredArgsConstructor
 @Repository
 public class BookRepositoryImpl implements BookRepository {
     private final EntityManagerFactory entityManagerFactory;
 
-    @Autowired
-    public BookRepositoryImpl(EntityManagerFactory entityManagerFactory) {
-        this.entityManagerFactory = entityManagerFactory;
-    }
-
     @Override
     public Book save(Book book) {
         EntityManager entityManager = null;
@@ -52,4 +49,13 @@ public List<Book> findAll() {
             throw new RuntimeException("Can't find all books", e);
         }
     }
+
+    @Override
+    public Optional<Book> findById(Long id) {
+        try (EntityManager entityManager = entityManagerFactory.createEntityManager()) {
+            return Optional.ofNullable(entityManager.find(Book.class, id));
+        } catch (Exception e) {
+            throw new RuntimeException("Can't find a book with id: " + id, e);
+        }
+    }
 }

src/main/java/mate/academy/bookstore/service/BookService.java

@@ -1,10 +1,13 @@
 package mate.academy.bookstore.service;
 
 import java.util.List;
-import mate.academy.bookstore.model.Book;
+import mate.academy.bookstore.dto.BookDto;
+import mate.academy.bookstore.dto.CreateBookRequestDto;
 
 public interface BookService {
-    Book save(Book book);
+    BookDto save(CreateBookRequestDto requestDto);
 
-    List<Book> findAll();
+    List<BookDto> findAll();
+
+    BookDto findById(Long id);
 }

src/main/java/mate/academy/bookstore/service/BookServiceImpl.java

@@ -1,7 +1,11 @@
 package mate.academy.bookstore.service;
 
+import jakarta.persistence.EntityNotFoundException;
 import java.util.List;
 import lombok.RequiredArgsConstructor;
+import mate.academy.bookstore.dto.BookDto;
+import mate.academy.bookstore.dto.CreateBookRequestDto;
+import mate.academy.bookstore.mapper.BookMapper;
 import mate.academy.bookstore.model.Book;
 import mate.academy.bookstore.repository.BookRepository;
 import org.springframework.stereotype.Service;
@@ -10,14 +14,24 @@
 @Service
 public class BookServiceImpl implements BookService {
     private final BookRepository bookRepository;
+    private final BookMapper bookMapper;
 
     @Override
-    public Book save(Book book) {
-        return bookRepository.save(book);
+    public BookDto save(CreateBookRequestDto requestDto) {
+        Book book = bookMapper.toModel(requestDto);
+        return bookMapper.toDto(bookRepository.save(book));
     }
 
     @Override
-    public List<Book> findAll() {
-        return bookRepository.findAll();
+    public List<BookDto> findAll() {
+        return bookRepository.findAll().stream()
+                .map(bookMapper::toDto)
+                .toList();
+    }
+
+    @Override
+    public BookDto findById(Long id) {
+        return bookMapper.toDto(bookRepository.findById(id).orElseThrow(
+                () -> new EntityNotFoundException("Can't find a book with it: " + id)));
     }
 }

src/main/resources/application.properties

@@ -5,3 +5,5 @@ spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
 spring.jpa.hibernate.ddl-auto=create-drop
 spring.jpa.show-sql=true
+spring.jpa.open-in-view=false
+spring.jackson.deserialization.fail-on-unknown-properties=true

src/test/java/mate/academy/bookstore/BookstoreApplicationTests.java

@@ -6,8 +6,8 @@
 @SpringBootTest
 class BookstoreApplicationTests {
 
-	@Test
-	void contextLoads() {
-	}
+    @Test
+    void contextLoads() {
+    }
 
 }