add coupon cart cartItem entities

backend/src/main/java/com/petshop/backend/entity/Cart.java

@@ -0,0 +1,155 @@
+package com.petshop.backend.entity;
+
+import jakarta.persistence.*;
+import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.UpdateTimestamp;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+@Entity
+@Table(name = "cart")
+public class Cart {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long cartId;
+
+    @ManyToOne
+    @JoinColumn(name = "userId", nullable = false)
+    private User user;
+
+    @ManyToOne
+    @JoinColumn(name = "storeId")
+    private StoreLocation store;
+
+    @ManyToOne
+    @JoinColumn(name = "couponId")
+    private Coupon coupon;
+
+    @Column(nullable = false, length = 20)
+    private String cartStatus = "ACTIVE";
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal subtotalAmount = BigDecimal.ZERO;
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal discountAmount = BigDecimal.ZERO;
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal totalAmount = BigDecimal.ZERO;
+
+    @CreationTimestamp
+    @Column(name = "created_at", updatable = false)
+    private LocalDateTime createdAt;
+
+    @UpdateTimestamp
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    public Cart() {
+    }
+
+    public Long getCartId() {
+        return cartId;
+    }
+
+    public void setCartId(Long cartId) {
+        this.cartId = cartId;
+    }
+
+    public User getUser() {
+        return user;
+    }
+
+    public void setUser(User user) {
+        this.user = user;
+    }
+
+    public StoreLocation getStore() {
+        return store;
+    }
+
+    public void setStore(StoreLocation store) {
+        this.store = store;
+    }
+
+    public Coupon getCoupon() {
+        return coupon;
+    }
+
+    public void setCoupon(Coupon coupon) {
+        this.coupon = coupon;
+    }
+
+    public String getCartStatus() {
+        return cartStatus;
+    }
+
+    public void setCartStatus(String cartStatus) {
+        this.cartStatus = cartStatus;
+    }
+
+    public BigDecimal getSubtotalAmount() {
+        return subtotalAmount;
+    }
+
+    public void setSubtotalAmount(BigDecimal subtotalAmount) {
+        this.subtotalAmount = subtotalAmount;
+    }
+
+    public BigDecimal getDiscountAmount() {
+        return discountAmount;
+    }
+
+    public void setDiscountAmount(BigDecimal discountAmount) {
+        this.discountAmount = discountAmount;
+    }
+
+    public BigDecimal getTotalAmount() {
+        return totalAmount;
+    }
+
+    public void setTotalAmount(BigDecimal totalAmount) {
+        this.totalAmount = totalAmount;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Cart cart = (Cart) o;
+        return Objects.equals(cartId, cart.cartId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cartId);
+    }
+
+    @Override
+    public String toString() {
+        return "Cart{" +
+                "cartId=" + cartId +
+                ", cartStatus='" + cartStatus + '\'' +
+                ", totalAmount=" + totalAmount +
+                '}';
+    }
+}

backend/src/main/java/com/petshop/backend/entity/CartItem.java

@@ -0,0 +1,121 @@
+package com.petshop.backend.entity;
+
+import jakarta.persistence.*;
+import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.UpdateTimestamp;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+@Entity
+@Table(name = "cart_item")
+public class CartItem {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long cartItemId;
+
+    @ManyToOne
+    @JoinColumn(name = "cartId", nullable = false)
+    private Cart cart;
+
+    @ManyToOne
+    @JoinColumn(name = "prodId", nullable = false)
+    private Product product;
+
+    @Column(nullable = false)
+    private Integer quantity;
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal unitPrice;
+
+    @CreationTimestamp
+    @Column(name = "created_at", updatable = false)
+    private LocalDateTime createdAt;
+
+    @UpdateTimestamp
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    public CartItem() {
+    }
+
+    public Long getCartItemId() {
+        return cartItemId;
+    }
+
+    public void setCartItemId(Long cartItemId) {
+        this.cartItemId = cartItemId;
+    }
+
+    public Cart getCart() {
+        return cart;
+    }
+
+    public void setCart(Cart cart) {
+        this.cart = cart;
+    }
+
+    public Product getProduct() {
+        return product;
+    }
+
+    public void setProduct(Product product) {
+        this.product = product;
+    }
+
+    public Integer getQuantity() {
+        return quantity;
+    }
+
+    public void setQuantity(Integer quantity) {
+        this.quantity = quantity;
+    }
+
+    public BigDecimal getUnitPrice() {
+        return unitPrice;
+    }
+
+    public void setUnitPrice(BigDecimal unitPrice) {
+        this.unitPrice = unitPrice;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        CartItem cartItem = (CartItem) o;
+        return Objects.equals(cartItemId, cartItem.cartItemId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(cartItemId);
+    }
+
+    @Override
+    public String toString() {
+        return "CartItem{" +
+                "cartItemId=" + cartItemId +
+                ", quantity=" + quantity +
+                ", unitPrice=" + unitPrice +
+                '}';
+    }
+}

backend/src/main/java/com/petshop/backend/entity/Coupon.java

@@ -0,0 +1,162 @@
+package com.petshop.backend.entity;
+
+import jakarta.persistence.*;
+import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.UpdateTimestamp;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+@Entity
+@Table(name = "coupon")
+public class Coupon {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long couponId;
+
+    @Column(nullable = false, length = 50, unique = true)
+    private String couponCode;
+
+    @Column(nullable = false, length = 20)
+    private String discountType;
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal discountValue;
+
+    @Column(precision = 10, scale = 2)
+    private BigDecimal minOrderAmount;
+
+    @Column(nullable = false)
+    private Boolean active = true;
+
+    private LocalDateTime startsAt;
+
+    private LocalDateTime endsAt;
+
+    private Integer usageLimit;
+
+    @CreationTimestamp
+    @Column(name = "created_at", updatable = false)
+    private LocalDateTime createdAt;
+
+    @UpdateTimestamp
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    public Coupon() {
+    }
+
+    public Long getCouponId() {
+        return couponId;
+    }
+
+    public void setCouponId(Long couponId) {
+        this.couponId = couponId;
+    }
+
+    public String getCouponCode() {
+        return couponCode;
+    }
+
+    public void setCouponCode(String couponCode) {
+        this.couponCode = couponCode;
+    }
+
+    public String getDiscountType() {
+        return discountType;
+    }
+
+    public void setDiscountType(String discountType) {
+        this.discountType = discountType;
+    }
+
+    public BigDecimal getDiscountValue() {
+        return discountValue;
+    }
+
+    public void setDiscountValue(BigDecimal discountValue) {
+        this.discountValue = discountValue;
+    }
+
+    public BigDecimal getMinOrderAmount() {
+        return minOrderAmount;
+    }
+
+    public void setMinOrderAmount(BigDecimal minOrderAmount) {
+        this.minOrderAmount = minOrderAmount;
+    }
+
+    public Boolean getActive() {
+        return active;
+    }
+
+    public void setActive(Boolean active) {
+        this.active = active;
+    }
+
+    public LocalDateTime getStartsAt() {
+        return startsAt;
+    }
+
+    public void setStartsAt(LocalDateTime startsAt) {
+        this.startsAt = startsAt;
+    }
+
+    public LocalDateTime getEndsAt() {
+        return endsAt;
+    }
+
+    public void setEndsAt(LocalDateTime endsAt) {
+        this.endsAt = endsAt;
+    }
+
+    public Integer getUsageLimit() {
+        return usageLimit;
+    }
+
+    public void setUsageLimit(Integer usageLimit) {
+        this.usageLimit = usageLimit;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Coupon coupon = (Coupon) o;
+        return Objects.equals(couponId, coupon.couponId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(couponId);
+    }
+
+    @Override
+    public String toString() {
+        return "Coupon{" +
+                "couponId=" + couponId +
+                ", couponCode='" + couponCode + '\'' +
+                ", discountType='" + discountType + '\'' +
+                ", discountValue=" + discountValue +
+                ", active=" + active +
+                '}';
+    }
+}

backend/src/main/java/com/petshop/backend/repository/CartItemRepository.java

@@ -0,0 +1,13 @@
+package com.petshop.backend.repository;
+
+import com.petshop.backend.entity.CartItem;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface CartItemRepository extends JpaRepository<CartItem, Long> {
+
+    List<CartItem> findByCartCartId(Long cartId);
+}

backend/src/main/java/com/petshop/backend/repository/CartRepository.java

@@ -0,0 +1,16 @@
+package com.petshop.backend.repository;
+
+import com.petshop.backend.entity.Cart;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface CartRepository extends JpaRepository<Cart, Long> {
+
+    List<Cart> findByUserId(Long userId);
+
+    Optional<Cart> findByUserIdAndCartStatus(Long userId, String cartStatus);
+}

backend/src/main/java/com/petshop/backend/repository/CouponRepository.java

@@ -0,0 +1,13 @@
+package com.petshop.backend.repository;
+
+import com.petshop.backend.entity.Coupon;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface CouponRepository extends JpaRepository<Coupon, Long> {
+
+    Optional<Coupon> findByCouponCode(String couponCode);
+}