refactor: updated tables

Author: =

src/main/kotlin/com/example/dto/FoodDto.kt

@@ -10,6 +10,10 @@ data class FoodDto(
     val price: Double,
     val rating: Double,
     val orderCount: Int,
-    val type: String,
+    val category: String,
     val imageUrl: String
 )
+
+enum class FoodCategory {
+    Burger, Pizza, Sandwich, Dessert, Snack, Drink
+}

src/main/kotlin/com/example/dto/OrderDto.kt

@@ -1,13 +1,21 @@
 package com.example.dto
 
+import com.example.util.BigDecimalSerializer
 import kotlinx.datetime.Instant
 import kotlinx.serialization.Serializable
+import java.math.BigDecimal
+import java.util.UUID
 
-@Serializable
+@Serializable(with = BigDecimalSerializer::class)
 data class OrderDto(
     val id: Int,
-    val userId: Int,
-    val foodId: Int,
-    val quantity: Int,
-    val orderTime: Instant = Instant.DISTANT_PAST
+    val userId: UUID,
+    val orderTime: Instant,
+    val orderStatus: OrderStatus = OrderStatus.Pending,
+    val totalPrice: BigDecimal,
+    val paymentDetails: String? = null,
 )
+
+enum class OrderStatus {
+    Pending, Started, Processing, Finished, Cancelled
+}

src/main/kotlin/com/example/dto/OrderItemDto.kt

@@ -0,0 +1,14 @@
+package com.example.dto
+
+import com.example.util.BigDecimalSerializer
+import kotlinx.serialization.Serializable
+import java.math.BigDecimal
+
+@Serializable(with = BigDecimalSerializer::class)
+data class OrderItemDto(
+    val id: Int,
+    val orderId: Int,
+    val foodId: Int,
+    val quantity: Int,
+    val price: BigDecimal
+)

src/main/kotlin/com/example/dto/UserDto.kt

@@ -2,10 +2,6 @@ package com.example.dto
 
 import kotlinx.serialization.Serializable
 
-enum class FoodType {
-    Burger, Pizza, Sandwich, Dessert, Snack, Drink
-}
-
 @Serializable
 data class UserDto(
     val id: Int,