SD/feat/#32 Added Controller, Service, Model, DTO classes. Added flyw…

…ay Book migration. Changed package name typo from chohort2d to cohort2d.

online-book-store/pom.xml

@@ -8,14 +8,15 @@
 		<version>3.1.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
-	<groupId>com.amigoscode.chohort2d</groupId>
+	<groupId>com.amigoscode.cohort2d</groupId>
 	<artifactId>online-book-store</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
 	<name>online-book-store</name>
 	<description>Online book store</description>
 	<properties>
 		<java.version>17</java.version>
 		<testcontainers.version>1.17.6</testcontainers.version>
+		<org.mapstruct.version>1.5.5.Final</org.mapstruct.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -43,6 +44,7 @@
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
+			<version>1.18.28</version>
 			<optional>true</optional>
 		</dependency>
 		<dependency>
@@ -65,8 +67,17 @@
 			<artifactId>postgresql</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.github.javafaker</groupId>
+			<artifactId>javafaker</artifactId>
+			<version>1.0.2</version>
+		</dependency>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct</artifactId>
+			<version>${org.mapstruct.version}</version>
+		</dependency>
 	</dependencies>
-
 	<build>
 		<plugins>
 			<plugin>
@@ -141,6 +152,25 @@
 					</execution>
 				</executions>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.1</version>
+				<configuration>
+					<annotationProcessorPaths>
+						<path>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+							<version>1.18.28</version>
+						</path>
+						<path>
+							<groupId>org.mapstruct</groupId>
+							<artifactId>mapstruct-processor</artifactId>
+							<version>${org.mapstruct.version}</version>
+						</path>
+					</annotationProcessorPaths>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>
 

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/OnlineBookStoreApplication.java

@@ -0,0 +1,29 @@
+package com.amigoscode.cohort2d.onlinebookstore;
+
+import com.amigoscode.cohort2d.onlinebookstore.book.BookDemoData;
+import com.amigoscode.cohort2d.onlinebookstore.book.BookRepository;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class OnlineBookStoreApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(OnlineBookStoreApplication.class, args);
+	}
+
+	@Bean
+	public CommandLineRunner createBookDemoData(BookRepository bookRepository, BookDemoData bookDemoData) {
+		return args -> {
+			if (bookRepository.count() == 0) {
+
+				bookRepository.saveAll(bookDemoData.generateData());
+
+			}
+		};
+	}
+
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/Book.java

@@ -0,0 +1,60 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+@Data
+@Entity
+@AllArgsConstructor
+@NoArgsConstructor
+public class Book {
+
+    @Id
+    @SequenceGenerator(
+            name = "book_id_seq",
+            sequenceName = "book_id_seq",
+            allocationSize = 1
+    )
+    @GeneratedValue(
+            strategy = GenerationType.SEQUENCE,
+            generator = "book_id_seq"
+    )
+    @NotNull
+    private Long id;
+
+
+    @NotNull
+    @Column(unique=true)
+    private String isbn;
+
+    @NotNull
+    private String title;
+
+    @NotNull
+    private String description;
+
+    @NotNull
+    private BigDecimal price;
+
+    @NotNull
+    private Integer numberOfPages;
+
+    @NotNull
+    private Integer quantity;
+
+    @NotNull
+    @Column(columnDefinition = "LOCALDATE")
+    private LocalDate publishDate;
+
+    @NotNull
+    @Enumerated(EnumType.STRING)
+    private BookFormat bookFormat;
+
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookController.java

@@ -0,0 +1,27 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("api/v1/books")
+public class BookController {
+
+    private final BookService bookService;
+
+    @GetMapping()
+    public List<BookDTO> getBooks() {
+        return bookService.getAllBooks();
+    }
+
+    @GetMapping("{id}")
+    private BookDTO getBookById(@PathVariable("id") int id){
+        return bookService.getBookById(id);
+    }
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookDAO.java

@@ -0,0 +1,11 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface BookDAO {
+
+    List<Book> findAllBooks();
+
+    Optional<Book> findById(int id);
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookDTO.java

@@ -0,0 +1,18 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+public record BookDTO (
+        Long id,
+        String isbn,
+        String title,
+        String description,
+        BigDecimal price,
+        Integer numberOfPages,
+        Integer quantity,
+        LocalDate publishDate,
+        String bookFormat
+){
+
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookDTOMapper.java

@@ -0,0 +1,26 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+
+import org.mapstruct.Mapper;
+import org.mapstruct.factory.Mappers;
+
+import java.util.List;
+
+@Mapper(
+        componentModel = "spring"
+)
+public interface BookDTOMapper {
+
+    BookDTOMapper INSTANCE = Mappers.getMapper( BookDTOMapper.class );
+
+    BookDTO modelToDTO(Book book);
+
+    List<BookDTO> modelToDTO(Iterable<Book> books);
+
+    Book dtoToModel(BookDTO bookDTO);
+
+    List<Book> dtoToModel(Iterable<BookDTO> bookDTOS);
+
+}
+
+

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookDemoData.java

@@ -0,0 +1,51 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import com.github.javafaker.Faker;
+import org.springframework.stereotype.Component;
+
+import java.math.BigDecimal;
+import java.time.ZoneId;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+@Component
+public class BookDemoData {
+
+    private final Faker faker = new Faker();
+
+    public List<Book> generateData(){
+        int count = 20;
+
+        List<Book> books = new ArrayList<>();
+
+        for (int i = 0; i < count; i++) {
+
+            Book book = new Book();
+
+            book.setTitle(faker.book().title());
+            book.setIsbn(faker.code().isbn13());
+            book.setDescription(faker.book().publisher());
+            book.setPrice(new BigDecimal("19.99"));
+            book.setNumberOfPages(faker.number().numberBetween(10, 1000));
+            book.setQuantity(faker.number().numberBetween(1, 250));
+
+            Date date = faker.date().birthday();
+            book.setPublishDate(date.toInstant()
+                            .atZone(ZoneId.systemDefault())
+                            .toLocalDate());
+
+
+            // Alternate between Digital and physical formats when creating demo book entries
+            if (i % 2 == 0) {
+                book.setBookFormat(BookFormat.DIGITAL);
+            } else {
+                book.setBookFormat(BookFormat.PHYSICAL);
+            }
+
+            books.add(book);
+        }
+        return books;
+    }
+
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookFormat.java

@@ -0,0 +1,6 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+public enum BookFormat {
+    DIGITAL,
+    PHYSICAL
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookJPAService.java

@@ -0,0 +1,25 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import com.amigoscode.cohort2d.onlinebookstore.exceptions.ResourceNotFoundException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@RequiredArgsConstructor
+@Repository("jpa")
+public class BookJPAService implements BookDAO {
+
+    private final BookRepository bookRepository;
+
+    @Override
+    public List<Book> findAllBooks() {
+        return bookRepository.findAll();
+    }
+
+    @Override
+    public Optional<Book> findById(int id) throws ResourceNotFoundException {
+        return bookRepository.findById(id);
+    }
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookRepository.java

@@ -0,0 +1,7 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface BookRepository extends JpaRepository<Book, Integer> {
+
+}

online-book-store/src/main/java/com/amigoscode/cohort2d/onlinebookstore/book/BookService.java

@@ -0,0 +1,29 @@
+package com.amigoscode.cohort2d.onlinebookstore.book;
+
+import com.amigoscode.cohort2d.onlinebookstore.exceptions.ResourceNotFoundException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Qualifier(value = "jpa")
+public class BookService {
+
+    private final BookDAO bookDAO;
+    private final BookDTOMapper bookDTOMapper;
+
+    public List<BookDTO> getAllBooks() {
+        return bookDTOMapper.modelToDTO(bookDAO.findAllBooks());
+    }
+
+    public BookDTO getBookById(int id){
+        return bookDTOMapper.modelToDTO(
+                bookDAO.findById(id)
+                .orElseThrow(
+                () -> new ResourceNotFoundException("Book with id [%s] not found".formatted(id))
+        ));
+    }
+}