[Day 3-4] Product 도메인 개발

build.gradle

@@ -25,15 +25,15 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
-    compileOnly 'org.projectlombok:lombok'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'com.fasterxml.jackson.core:jackson-core:2.11.4'
+    implementation 'com.fasterxml.jackson.core:jackson-annotations:2.11.4'
+    implementation 'com.fasterxml.jackson.core:jackson-databind:2.11.4'
+    implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.11.4'
     runtimeOnly 'com.h2database:h2'
+    compileOnly 'org.projectlombok:lombok'
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
-    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
-    implementation "com.fasterxml.jackson.core:jackson-core:2.11.4"
-    implementation "com.fasterxml.jackson.core:jackson-annotations:2.11.4"
-    implementation "com.fasterxml.jackson.core:jackson-databind:2.11.4"
-    implementation "com.fasterxml.jackson.module:jackson-module-kotlin:2.11.4"
 }
 
 tasks.named('test') {

src/main/java/com/swger/tddstudy/product/domain/Product.java

@@ -1,28 +1,53 @@
 package com.swger.tddstudy.product.domain;
 
 import com.swger.tddstudy.util.BaseEntity;
+import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.EnumType;
 import javax.persistence.Enumerated;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.Table;
 import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.Setter;
 
 @Getter
+@Setter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PACKAGE)
+@Builder
 @Entity
+@Table(name = "Products")
 public class Product extends BaseEntity {
 
     @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
+    @NonNull
+    @Column(name = "name", nullable = false, length = 30)
     private String name;
 
+    @NonNull
+    @Column(name = "price", nullable = false)
     private int price;
 
+    @NonNull
+    @Column(name = "amount", nullable = false)
     private int amount;
 
     @Enumerated(EnumType.STRING)
     private SellingStatus sellingStatus;
+
+    public ProductDto toProductDto() {
+        return ProductDto.builder().id(this.id).name(this.name).price(this.price)
+            .amount(this.amount).sellingStatus(this.sellingStatus.name()).build();
+    }
+
 }

src/main/java/com/swger/tddstudy/product/domain/ProductDto.java

@@ -0,0 +1,42 @@
+package com.swger.tddstudy.product.domain;
+
+import javax.persistence.Column;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.NonNull;
+import lombok.Setter;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Getter
+@Setter
+@Builder
+public class ProductDto {
+
+    private Long id;
+    private String name;
+    private int price;
+    private int amount;
+    private String sellingStatus;
+
+    public ProductDto(String name, int price, int amount, String sellingStatus) {
+        this.name = name;
+        this.price = price;
+        this.amount = amount;
+        this.sellingStatus = sellingStatus;
+    }
+
+    public Product toEntity() {
+        return Product.builder().name(this.name).price(this.price).amount(this.amount)
+            .sellingStatus(SellingStatus.valueOf(this.sellingStatus)).build();
+    }
+}

src/main/java/com/swger/tddstudy/product/exception/ProductNotFoundException.java

@@ -0,0 +1,8 @@
+package com.swger.tddstudy.product.exception;
+
+public class ProductNotFoundException extends RuntimeException {
+
+    public ProductNotFoundException(String message) {
+        super(message);
+    }
+}

src/main/java/com/swger/tddstudy/product/exception/ProductSoldOutExcpetion.java

@@ -0,0 +1,8 @@
+package com.swger.tddstudy.product.exception;
+
+public class ProductSoldOutExcpetion extends RuntimeException{
+
+    public ProductSoldOutExcpetion(String message) {
+        super(message);
+    }
+}

src/main/java/com/swger/tddstudy/product/exception/UnauthorizedException.java

@@ -0,0 +1,10 @@
+package com.swger.tddstudy.product.exception;
+
+import org.springframework.web.client.HttpClientErrorException.Unauthorized;
+
+public class UnauthorizedException extends RuntimeException {
+
+    public UnauthorizedException(String message) {
+        super(message);
+    }
+}

src/main/java/com/swger/tddstudy/product/repository/ProductRepository.java

@@ -0,0 +1,11 @@
+package com.swger.tddstudy.product.repository;
+
+import com.swger.tddstudy.product.domain.Product;
+import java.util.Optional;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProductRepository extends JpaRepository<Product, Long> {
+
+    @Override
+    Optional<Product> findById(Long id);
+}

src/main/java/com/swger/tddstudy/product/request/ProductAddRequest.java

@@ -0,0 +1,34 @@
+package com.swger.tddstudy.product.request;
+
+import com.swger.tddstudy.product.domain.ProductDto;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class ProductAddRequest {
+
+    @NotBlank(message = "상품명을 입력하세요.")
+    @Size(min = 2, max = 10, message = "상품명을 2자 이상 30자 이하로 입력하세요.")
+    private String name;
+
+    @NotNull(message = "상품 가격을 입력하세요.")
+    @Min(value = 0, message = "상품 가격은 0 이상으로 입력하세요.")
+    private int price;
+
+    @NotNull(message = "상품 수량을 입력하세요.")
+    @Min(value = 1, message = "상품 수량은 1 이상으로 입력하세요.")
+    private int amount;
+
+    public ProductDto toProductDto() {
+        return ProductDto.builder().name(this.name).price(this.price).amount(this.amount).build();
+    }
+}

src/main/java/com/swger/tddstudy/product/request/ProductStockUpRequest.java

@@ -0,0 +1,23 @@
+package com.swger.tddstudy.product.request;
+
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class ProductStockUpRequest {
+
+    @NotNull(message = "상품 ID를 입력하세요.")
+    private Long id;
+
+    @NotNull(message = "상품 수량을 입력하세요.")
+    @Min(value = 1, message = "상품 수량은 1 이상으로 입력하세요.")
+    private int amount;
+
+}

src/main/java/com/swger/tddstudy/product/restcontroller/ProductRestController.java

@@ -0,0 +1,64 @@
+package com.swger.tddstudy.product.restcontroller;
+
+import com.swger.tddstudy.product.domain.Product;
+import com.swger.tddstudy.product.exception.UnauthorizedException;
+import com.swger.tddstudy.product.request.ProductAddRequest;
+import com.swger.tddstudy.product.request.ProductStockUpRequest;
+import com.swger.tddstudy.product.service.ProductService;
+import com.swger.tddstudy.user.request.JoinRequest;
+import com.swger.tddstudy.user.service.UserService;
+import java.util.HashMap;
+import java.util.Map;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+import javax.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+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;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("api/product")
+public class ProductRestController {
+
+    private final ProductService productService;
+    private final UserService userService;
+
+    @PostMapping("/add")
+    public ResponseEntity<?> join(@Valid @RequestBody ProductAddRequest productAddRequest,
+        HttpServletRequest request) {
+        Map<String, Object> message = new HashMap<>();
+        HttpSession session = request.getSession(false);
+        if (session == null) {
+            throw new UnauthorizedException("권한이 없습니다.");
+        }
+        if (userService.isAdmin((Long) session.getAttribute("id"))) {
+            message.put("status", 200);
+            message.put("data", productService.productAdd(productAddRequest));
+            return ResponseEntity.status(HttpStatus.OK).body(message);
+        } else {
+            throw new UnauthorizedException("관리자만 상품을 등록할 수 있습니다.");
+        }
+    }
+
+    @PostMapping("/stock-up")
+    public ResponseEntity<?> join(@Valid @RequestBody ProductStockUpRequest productStockUpRequest,
+        HttpServletRequest request) {
+        Map<String, Object> message = new HashMap<>();
+        HttpSession session = request.getSession(false);
+        if (session == null) {
+            throw new UnauthorizedException("권한이 없습니다.");
+        }
+        if (userService.isAdmin((Long) session.getAttribute("id"))) {
+            message.put("status", 200);
+            message.put("data", productService.productStockUp(productStockUpRequest));
+            return ResponseEntity.status(HttpStatus.OK).body(message);
+        } else {
+            throw new UnauthorizedException("관리자만 상품 재고를 추가할 수 있습니다.");
+        }
+    }
+}

src/main/java/com/swger/tddstudy/product/restcontroller/ProductRestControllerAdvice.java

@@ -0,0 +1,34 @@
+package com.swger.tddstudy.product.restcontroller;
+
+import com.swger.tddstudy.product.exception.ProductSoldOutExcpetion;
+import com.swger.tddstudy.product.exception.UnauthorizedException;
+import java.util.HashMap;
+import java.util.Map;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.client.HttpClientErrorException.Unauthorized;
+
+@RestControllerAdvice
+public class ProductRestControllerAdvice {
+
+    @ExceptionHandler
+    public ResponseEntity<?> unauthorizedException(UnauthorizedException e) {
+        Map<String, String> errorMessage = new HashMap<>();
+        errorMessage.put("error", e.getMessage());
+        return ResponseEntity.status(HttpStatus.UNAUTHORIZED)
+            .contentType(MediaType.APPLICATION_JSON)
+            .body(errorMessage);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<?> productSoldOutException(ProductSoldOutExcpetion e) {
+        Map<String, String> errorMessage = new HashMap<>();
+        errorMessage.put("error", e.getMessage());
+        return ResponseEntity.status(HttpStatus.BAD_REQUEST)
+            .contentType(MediaType.APPLICATION_JSON)
+            .body(errorMessage);
+    }
+}