Implemented all needed repositories/services/controllers

pom.xml

@@ -30,6 +30,33 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-autoconfigure</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.28</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

src/main/java/mate/academy/springboot/datajpa/controller/CategoryController.java

@@ -0,0 +1,49 @@
+package mate.academy.springboot.datajpa.controller;
+
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import mate.academy.springboot.datajpa.dto.request.CategoryRequestDto;
+import mate.academy.springboot.datajpa.dto.response.CategoryResponseDto;
+import mate.academy.springboot.datajpa.mapper.DtoMapper;
+import mate.academy.springboot.datajpa.model.Category;
+import mate.academy.springboot.datajpa.service.CategoryService;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/categories")
+@RequiredArgsConstructor
+public class CategoryController {
+    private final CategoryService service;
+    private final DtoMapper<CategoryRequestDto, CategoryResponseDto, Category> mapper;
+
+    @PostMapping
+    public CategoryResponseDto create(@RequestBody @Valid CategoryRequestDto dto) {
+        Category category = service.add(mapper.mapToModel(dto));
+        return mapper.mapToDto(category);
+    }
+
+    @GetMapping("/{id}")
+    public CategoryResponseDto get(@PathVariable Long id) {
+        Category category = service.getById(id);
+        return mapper.mapToDto(category);
+    }
+
+    @DeleteMapping ("/{id}")
+    public void delete(@PathVariable Long id) {
+        service.delete(id);
+    }
+
+    @PutMapping("/{id}")
+    public CategoryResponseDto update(@PathVariable Long id,
+            @RequestBody @Valid CategoryRequestDto dto) {
+        Category category = service.update(mapper.mapToModel(dto), id);
+        return mapper.mapToDto(category);
+    }
+}

src/main/java/mate/academy/springboot/datajpa/controller/ProductController.java

@@ -0,0 +1,69 @@
+package mate.academy.springboot.datajpa.controller;
+
+import jakarta.validation.Valid;
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.stream.Collectors;
+import lombok.RequiredArgsConstructor;
+import mate.academy.springboot.datajpa.dto.request.ProductRequestDto;
+import mate.academy.springboot.datajpa.dto.response.ProductResponseDto;
+import mate.academy.springboot.datajpa.mapper.DtoMapper;
+import mate.academy.springboot.datajpa.model.Product;
+import mate.academy.springboot.datajpa.service.ProductService;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/products")
+@RequiredArgsConstructor
+public class ProductController {
+    private final ProductService service;
+    private final DtoMapper<ProductRequestDto, ProductResponseDto, Product> mapper;
+
+    @PostMapping
+    public ProductResponseDto create(@RequestBody @Valid ProductRequestDto dto) {
+        Product mappedProduct = mapper.mapToModel(dto);
+        Product product = service.add(mappedProduct);
+        return mapper.mapToDto(product);
+    }
+
+    @GetMapping("/{id}")
+    public ProductResponseDto get(@PathVariable Long id) {
+        Product product = service.getById(id);
+        return mapper.mapToDto(product);
+    }
+
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        service.delete(id);
+    }
+
+    @PutMapping("/{id}")
+    public ProductResponseDto update(@PathVariable Long id,
+            @RequestBody @Valid ProductRequestDto dto) {
+        Product product = service.update(mapper.mapToModel(dto), id);
+        return mapper.mapToDto(product);
+    }
+
+    @GetMapping("/price")
+    public List<ProductResponseDto> getByPrice(@RequestParam BigDecimal from,
+            @RequestParam BigDecimal to) {
+        return service.findAllByPriceBetween(from, to).stream()
+                .map(mapper::mapToDto)
+                .collect(Collectors.toList());
+    }
+
+    @GetMapping("/categories")
+    public List<ProductResponseDto> getByCategory(@RequestParam List<String> categoryNames) {
+        return service.findAllByCategoryNameIn(categoryNames).stream()
+                .map(mapper::mapToDto)
+                .collect(Collectors.toList());
+    }
+}

src/main/java/mate/academy/springboot/datajpa/dto/request/CategoryRequestDto.java

@@ -0,0 +1,12 @@
+package mate.academy.springboot.datajpa.dto.request;
+
+import jakarta.validation.constraints.NotNull;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class CategoryRequestDto {
+    @NotNull
+    private String name;
+}

src/main/java/mate/academy/springboot/datajpa/dto/request/ProductRequestDto.java

@@ -0,0 +1,19 @@
+package mate.academy.springboot.datajpa.dto.request;
+
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Positive;
+import java.math.BigDecimal;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class ProductRequestDto {
+    @NotNull
+    private String title;
+    @NotNull
+    @Positive
+    private BigDecimal price;
+    @NotNull
+    private Long categoryId;
+}

src/main/java/mate/academy/springboot/datajpa/dto/response/CategoryResponseDto.java

@@ -0,0 +1,11 @@
+package mate.academy.springboot.datajpa.dto.response;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class CategoryResponseDto {
+    private Long id;
+    private String name;
+}

src/main/java/mate/academy/springboot/datajpa/dto/response/ProductResponseDto.java

@@ -0,0 +1,14 @@
+package mate.academy.springboot.datajpa.dto.response;
+
+import java.math.BigDecimal;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class ProductResponseDto {
+    private Long id;
+    private String title;
+    private BigDecimal price;
+    private Long categoryId;
+}

src/main/java/mate/academy/springboot/datajpa/mapper/DtoMapper.java

@@ -0,0 +1,4 @@
+package mate.academy.springboot.datajpa.mapper;
+
+public interface DtoMapper<Q, S, M> extends RequestDtoMapper<Q, M>, ResponseDtoMapper<S, M> {
+}

src/main/java/mate/academy/springboot/datajpa/mapper/RequestDtoMapper.java

@@ -0,0 +1,5 @@
+package mate.academy.springboot.datajpa.mapper;
+
+public interface RequestDtoMapper<Q, M> {
+    M mapToModel(Q dto);
+}

src/main/java/mate/academy/springboot/datajpa/mapper/ResponseDtoMapper.java

@@ -0,0 +1,5 @@
+package mate.academy.springboot.datajpa.mapper;
+
+public interface ResponseDtoMapper<S, M> {
+    S mapToDto(M t);
+}

src/main/java/mate/academy/springboot/datajpa/mapper/impl/CategoryMapper.java

@@ -0,0 +1,26 @@
+package mate.academy.springboot.datajpa.mapper.impl;
+
+import mate.academy.springboot.datajpa.dto.request.CategoryRequestDto;
+import mate.academy.springboot.datajpa.dto.response.CategoryResponseDto;
+import mate.academy.springboot.datajpa.mapper.DtoMapper;
+import mate.academy.springboot.datajpa.model.Category;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CategoryMapper
+        implements DtoMapper<CategoryRequestDto, CategoryResponseDto, Category> {
+    @Override
+    public Category mapToModel(CategoryRequestDto dto) {
+        Category category = new Category();
+        category.setName(dto.getName());
+        return category;
+    }
+
+    @Override
+    public CategoryResponseDto mapToDto(Category category) {
+        CategoryResponseDto categoryResponseDto = new CategoryResponseDto();
+        categoryResponseDto.setId(category.getId());
+        categoryResponseDto.setName(category.getName());
+        return categoryResponseDto;
+    }
+}

src/main/java/mate/academy/springboot/datajpa/mapper/impl/ProductMapper.java

@@ -0,0 +1,30 @@
+package mate.academy.springboot.datajpa.mapper.impl;
+
+import mate.academy.springboot.datajpa.dto.request.ProductRequestDto;
+import mate.academy.springboot.datajpa.dto.response.ProductResponseDto;
+import mate.academy.springboot.datajpa.mapper.DtoMapper;
+import mate.academy.springboot.datajpa.model.Category;
+import mate.academy.springboot.datajpa.model.Product;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ProductMapper implements DtoMapper<ProductRequestDto, ProductResponseDto, Product> {
+    @Override
+    public ProductResponseDto mapToDto(Product product) {
+        ProductResponseDto productResponseDto = new ProductResponseDto();
+        productResponseDto.setId(product.getId());
+        productResponseDto.setTitle(product.getTitle());
+        productResponseDto.setPrice(product.getPrice());
+        productResponseDto.setCategoryId(product.getCategory().getId());
+        return productResponseDto;
+    }
+
+    @Override
+    public Product mapToModel(ProductRequestDto dto) {
+        Product product = new Product();
+        product.setTitle(dto.getTitle());
+        product.setPrice(dto.getPrice());
+        product.setCategory(new Category(dto.getCategoryId()));
+        return product;
+    }
+}

src/main/java/mate/academy/springboot/datajpa/model/Category.java

@@ -0,0 +1,28 @@
+package mate.academy.springboot.datajpa.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@Getter
+@Setter
+@ToString
+@NoArgsConstructor
+@Entity
+@Table(name = "categories")
+public class Category {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String name;
+
+    public Category(Long id) {
+        this.id = id;
+    }
+}

src/main/java/mate/academy/springboot/datajpa/model/Product.java

@@ -0,0 +1,35 @@
+package mate.academy.springboot.datajpa.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import java.math.BigDecimal;
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "products")
+public class Product {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String title;
+    private BigDecimal price;
+    @ManyToOne(fetch = FetchType.LAZY)
+    private Category category;
+
+    @Override
+    public String toString() {
+        return "Product{"
+                + "id=" + id
+                + ", title='" + title + '\''
+                + ", price=" + price
+                + '}';
+    }
+}

src/main/java/mate/academy/springboot/datajpa/repository/CategoryRepository.java

@@ -0,0 +1,9 @@
+package mate.academy.springboot.datajpa.repository;
+
+import mate.academy.springboot.datajpa.model.Category;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface CategoryRepository extends JpaRepository<Category, Long> {
+}

src/main/java/mate/academy/springboot/datajpa/repository/ProductRepository.java

@@ -0,0 +1,14 @@
+package mate.academy.springboot.datajpa.repository;
+
+import java.math.BigDecimal;
+import java.util.List;
+import mate.academy.springboot.datajpa.model.Product;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface ProductRepository extends JpaRepository<Product, Long> {
+    List<Product> findAllByPriceBetween(BigDecimal from, BigDecimal to);
+
+    List<Product> findAllByCategoryNameIn(List<String> categoryNames);
+}

src/main/java/mate/academy/springboot/datajpa/service/CategoryService.java

@@ -0,0 +1,13 @@
+package mate.academy.springboot.datajpa.service;
+
+import mate.academy.springboot.datajpa.model.Category;
+
+public interface CategoryService {
+    Category add(Category category);
+
+    Category getById(Long id);
+
+    void delete(Long id);
+
+    Category update(Category category, Long id);
+}