implemented order model

src/main/java/mate/academy/controller/OrderController.java

@@ -0,0 +1,122 @@
+package mate.academy.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import mate.academy.dto.order.OrderDto;
+import mate.academy.dto.order.OrderItemDto;
+import mate.academy.dto.order.PlaceOrderRequestDto;
+import mate.academy.dto.order.UpdateOrderStatusRequestDto;
+import mate.academy.model.User;
+import mate.academy.service.OrderService;
+import org.springdoc.core.annotations.ParameterObject;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.web.PageableDefault;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+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
+@RequestMapping("/orders")
+@RequiredArgsConstructor
+@Tag(name = "Order Controller", description = "Operations pertaining to orders in Online Book App")
+public class OrderController {
+    private final OrderService orderService;
+
+    @PreAuthorize("hasRole('USER')")
+    @PostMapping
+    @Operation(summary = "Place an order",
+            description = "Allows a user to place an order with the items in their shopping cart.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "Order placed successfully"),
+            @ApiResponse(responseCode = "400", description = "Invalid input data"),
+            @ApiResponse(responseCode = "401", description = "Unauthorized"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+    })
+    public OrderDto placeOrder(
+            @AuthenticationPrincipal User userDetails,
+            @RequestBody @Parameter(description = "Details for placing an order", required = true)
+            PlaceOrderRequestDto requestDto) {
+        return orderService.createOrder(userDetails.getId(), requestDto.shippingAddress());
+    }
+
+    @PreAuthorize("hasRole('USER')")
+    @GetMapping
+    @Operation(summary = "Get order history",
+            description = "Allows a user to view their order history.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200",
+                    description = "Order history retrieved successfully"),
+            @ApiResponse(responseCode = "401", description = "Unauthorized"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+    })
+    public List<OrderDto> getOrderHistory(
+            @AuthenticationPrincipal User userDetails,
+            @ParameterObject @PageableDefault Pageable pageable) {
+        return orderService.getOrderHistory(userDetails.getId(), pageable);
+    }
+
+    @PreAuthorize("hasRole('USER')")
+    @GetMapping("/{orderId}/items")
+    @Operation(summary = "Get order items",
+            description = "Allows a user to view all items in a specific order.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "Order items retrieved successfully"),
+            @ApiResponse(responseCode = "401", description = "Unauthorized"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+    })
+    public List<OrderItemDto> getOrderItems(
+            @PathVariable
+            @Parameter(description = "ID of the order to retrieve items from", required = true)
+            Long orderId,
+            @ParameterObject @PageableDefault Pageable pageable) {
+        return orderService.getOrderItems(orderId, pageable);
+    }
+
+    @PreAuthorize("hasRole('USER')")
+    @GetMapping("/{orderId}/items/{itemId}")
+    @Operation(summary = "Get specific order item",
+            description = "Allows a user to view a specific item in an order.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "Order item retrieved successfully"),
+            @ApiResponse(responseCode = "401", description = "Unauthorized"),
+            @ApiResponse(responseCode = "404", description = "Order or item not found")
+    })
+    public OrderItemDto getOrderItem(
+            @PathVariable
+            @Parameter(description = "ID of the order to retrieve the item from", required = true)
+            Long orderId,
+            @PathVariable @Parameter(description = "ID of the item to retrieve", required = true)
+            Long itemId) {
+        return orderService.getOrderItem(orderId, itemId);
+    }
+
+    @PreAuthorize("hasRole('ADMIN')")
+    @PatchMapping("/{orderId}")
+    @Operation(summary = "Update order status",
+            description = "Allows an admin to update the status of an order.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "Order status updated successfully"),
+            @ApiResponse(responseCode = "400", description = "Invalid status"),
+            @ApiResponse(responseCode = "401", description = "Unauthorized"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+    })
+    public OrderDto updateOrderStatus(
+            @PathVariable
+            @Parameter(description = "ID of the order to update", required = true) Long orderId,
+            @RequestBody
+            @Parameter(description = "Details for updating the order status", required = true)
+            UpdateOrderStatusRequestDto requestDto) {
+        return orderService.updateOrderStatus(orderId, requestDto.status().name());
+    }
+}

src/main/java/mate/academy/dto/order/OrderDto.java

@@ -0,0 +1,16 @@
+package mate.academy.dto.order;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.Set;
+
+public record OrderDto(
+        Long id,
+        Long userId,
+        String status,
+        BigDecimal total,
+        LocalDateTime orderDate,
+        String shippingAddress,
+        Set<OrderItemDto> orderItems
+) {
+}

src/main/java/mate/academy/dto/order/OrderItemDto.java

@@ -0,0 +1,11 @@
+package mate.academy.dto.order;
+
+import java.math.BigDecimal;
+
+public record OrderItemDto(
+        Long id,
+        Long orderId,
+        Long bookId,
+        int quantity,
+        BigDecimal price) {
+}

src/main/java/mate/academy/dto/order/PlaceOrderRequestDto.java

@@ -0,0 +1,8 @@
+package mate.academy.dto.order;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record PlaceOrderRequestDto(
+        @NotBlank String shippingAddress
+) {
+}

src/main/java/mate/academy/dto/order/UpdateOrderStatusRequestDto.java

@@ -0,0 +1,9 @@
+package mate.academy.dto.order;
+
+import jakarta.validation.constraints.NotNull;
+import mate.academy.model.Order;
+
+public record UpdateOrderStatusRequestDto(
+        @NotNull Order.Status status
+) {
+}

src/main/java/mate/academy/exception/OrderProcessingException.java

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

src/main/java/mate/academy/mapper/OrderItemMapper.java

@@ -0,0 +1,18 @@
+package mate.academy.mapper;
+
+import mate.academy.config.MapperConfig;
+import mate.academy.dto.order.OrderItemDto;
+import mate.academy.model.OrderItem;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+
+@Mapper(config = MapperConfig.class)
+public interface OrderItemMapper {
+    @Mapping(source = "order.id", target = "orderId")
+    @Mapping(source = "book.id", target = "bookId")
+    OrderItemDto toDto(OrderItem orderItem);
+
+    @Mapping(source = "orderId", target = "order.id")
+    @Mapping(source = "bookId", target = "book.id")
+    OrderItem toModel(OrderItemDto orderItemDto);
+}

src/main/java/mate/academy/mapper/OrderMapper.java

@@ -0,0 +1,16 @@
+package mate.academy.mapper;
+
+import mate.academy.config.MapperConfig;
+import mate.academy.dto.order.OrderDto;
+import mate.academy.model.Order;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+
+@Mapper(config = MapperConfig.class, uses = OrderItemMapper.class)
+public interface OrderMapper {
+    @Mapping(source = "user.id", target = "userId")
+    OrderDto toDto(Order order);
+
+    @Mapping(source = "userId", target = "user.id")
+    Order toModel(OrderDto orderDto);
+}

src/main/java/mate/academy/model/Order.java

@@ -0,0 +1,61 @@
+package mate.academy.model;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.HashSet;
+import java.util.Set;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.SQLRestriction;
+
+@Entity
+@Getter
+@Setter
+@SQLDelete(sql = "UPDATE orders set is_deleted = true WHERE id=?")
+@SQLRestriction("is_deleted=false")
+@Table(name = "orders")
+public class Order {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "user_id", nullable = false)
+    private User user;
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private Status status = Status.PENDING;
+    @Column(nullable = false)
+    private BigDecimal total;
+    @Column(nullable = false)
+    private LocalDateTime orderDate = LocalDateTime.now();
+    @Column(nullable = false)
+    private String shippingAddress;
+    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, orphanRemoval = true)
+    @ToString.Exclude
+    @EqualsAndHashCode.Exclude
+    private Set<OrderItem> orderItems = new HashSet<>();
+    @Column(nullable = false, name = "is_deleted", columnDefinition = "BIT")
+    private boolean isDeleted = false;
+
+    public enum Status {
+        COMPLETED,
+        PENDING,
+        DELIVERED
+    }
+}

src/main/java/mate/academy/model/OrderItem.java

@@ -0,0 +1,42 @@
+package mate.academy.model;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import java.math.BigDecimal;
+import lombok.Getter;
+import lombok.Setter;
+import org.hibernate.annotations.SQLDelete;
+import org.hibernate.annotations.SQLRestriction;
+
+@Entity
+@Getter
+@Setter
+@SQLDelete(sql = "UPDATE order_items set is_deleted = true WHERE id=?")
+@SQLRestriction("is_deleted=false")
+@Table(name = "order_items")
+public class OrderItem {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "order_id", nullable = false)
+    private Order order;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "book_id", nullable = false)
+    private Book book;
+    @Column(nullable = false)
+    private int quantity;
+    @Column(nullable = false)
+    private BigDecimal price;
+    @Column(nullable = false, name = "is_deleted", columnDefinition = "BIT")
+    private boolean isDeleted = false;
+}

src/main/java/mate/academy/repository/order/OrderRepository.java

@@ -0,0 +1,10 @@
+package mate.academy.repository.order;
+
+import java.util.List;
+import mate.academy.model.Order;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, Long> {
+    List<Order> findByUserId(Long userId, Pageable pageable);
+}

src/main/java/mate/academy/repository/orderitem/OrderItemRepository.java

@@ -0,0 +1,13 @@
+package mate.academy.repository.orderitem;
+
+import java.util.List;
+import java.util.Optional;
+import mate.academy.model.OrderItem;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderItemRepository extends JpaRepository<OrderItem, Long> {
+    List<OrderItem> findByOrderId(Long orderId, Pageable pageable);
+
+    Optional<OrderItem> findByOrderIdAndId(Long orderId, Long id);
+}

src/main/java/mate/academy/repository/shoppingcart/ShoppingCartRepository.java

@@ -1,5 +1,6 @@
 package mate.academy.repository.shoppingcart;
 
+import java.util.Optional;
 import mate.academy.model.ShoppingCart;
 import org.springframework.data.jpa.repository.EntityGraph;
 import org.springframework.data.jpa.repository.JpaRepository;
@@ -8,5 +9,5 @@
 @Repository
 public interface ShoppingCartRepository extends JpaRepository<ShoppingCart, Long> {
     @EntityGraph(attributePaths = {"cartItems", "cartItems.book"})
-    ShoppingCart findByUserId(Long userId);
+    Optional<ShoppingCart> findByUserId(Long userId);
 }

src/main/java/mate/academy/service/OrderService.java

@@ -0,0 +1,18 @@
+package mate.academy.service;
+
+import java.util.List;
+import mate.academy.dto.order.OrderDto;
+import mate.academy.dto.order.OrderItemDto;
+import org.springframework.data.domain.Pageable;
+
+public interface OrderService {
+    OrderDto createOrder(Long userId, String shippingAddress);
+
+    List<OrderDto> getOrderHistory(Long userId, Pageable pageable);
+
+    List<OrderItemDto> getOrderItems(Long orderId, Pageable pageable);
+
+    OrderItemDto getOrderItem(Long orderId, Long itemId);
+
+    OrderDto updateOrderStatus(Long orderId, String status);
+}