Implementation of getAll and create products endpoints.

demo-domain/src/main/kotlin/com/example/demo/domain/core/error/DomainError.kt

@@ -0,0 +1,3 @@
+package com.example.demo.domain.core.error
+
+open class DomainError(val message: String)

demo-domain/src/main/kotlin/com/example/demo/domain/core/error/FunctionalError.kt

@@ -0,0 +1,3 @@
+package com.example.demo.domain.core.error
+
+class FunctionalError(message: String) : DomainError(message)

demo-domain/src/main/kotlin/com/example/demo/domain/core/error/TechnicalError.kt

@@ -0,0 +1,3 @@
+package com.example.demo.domain.core.error
+
+class TechnicalError(message: String) : DomainError(message)

demo-domain/src/main/kotlin/com/example/demo/domain/product/inputport/ProductInputPort.kt

@@ -0,0 +1,11 @@
+package com.example.demo.domain.product.inputport
+
+import com.example.demo.domain.core.error.FunctionalError
+import com.example.demo.domain.product.model.Product
+import com.example.demo.domain.product.model.ProductType
+import com.github.michaelbull.result.Result
+
+interface ProductInputPort {
+    suspend fun create(name: String, type: ProductType): Result<Product, FunctionalError>
+    suspend fun getAll(): Result<List<Product>, FunctionalError>
+}

demo-domain/src/main/kotlin/com/example/demo/domain/product/outputport/ProductOutputPort.kt

@@ -0,0 +1,16 @@
+package com.example.demo.domain.product.outputport
+
+import com.example.demo.domain.core.error.TechnicalError
+import com.example.demo.domain.product.model.Product
+import com.github.michaelbull.result.Result
+import java.util.UUID
+
+interface ProductOutputPort {
+    fun getById(id: UUID): Product?
+
+    suspend fun getAll(): Result<List<Product>, TechnicalError>
+
+    fun save(product: Product): Result<Unit, TechnicalError>
+
+    fun deleteById(id: UUID)
+}

demo-domain/src/main/kotlin/com/example/demo/domain/product/port/ProductPort.kt

@@ -1,14 +0,0 @@
-package com.example.demo.domain.product.port
-
-import com.example.demo.domain.product.model.Product
-import java.util.UUID
-
-interface ProductPort {
-    fun getById(id: UUID): Product?
-
-    fun getAll(): List<Product>
-
-    fun save(product: Product)
-
-    fun deleteById(id: UUID)
-}