feat(command): add clear command

app/src/main/kotlin/app/AppInitializer.kt

@@ -2,6 +2,7 @@ package app
 
 import command.CommandManager
 import command.commands.Add
+import command.commands.Clear
 import command.commands.Exit
 import io.IOHandler
 import manager.CollectionManager
@@ -16,5 +17,6 @@ class AppInitializer {
 
         manager.register(Add(io, collectionManager))
         manager.register(Exit(io) { app.stop() })
+        manager.register(Clear(io, collectionManager))
     }
 }

app/src/main/kotlin/command/commands/Add.kt

@@ -7,13 +7,14 @@ import reader.ProductReader
 
 class Add(
     private val io: IOHandler,
-    private val manager: CollectionManager,
+    private val collectionManager: CollectionManager,
 ) : Command {
     override val name = "add"
     override val description = "add product"
 
     override fun execute() {
         io.println("добавляем продукт")
-        manager.addProduct(ProductReader(io).read())
+        collectionManager.addProduct(ProductReader(io).read())
+        io.println(collectionManager.getList().toString())
     }
 }

app/src/main/kotlin/command/commands/Clear.kt

@@ -0,0 +1,18 @@
+package command.commands
+
+import command.Command
+import io.IOHandler
+import manager.CollectionManager
+
+class Clear(
+    private val io: IOHandler,
+    private val collectionManager: CollectionManager,
+) : Command {
+    override val name = "clear"
+    override val description = "clear colletion"
+
+    override fun execute() {
+        collectionManager.getList().clear()
+        io.println(collectionManager.getList().toString())
+    }
+}

app/src/main/kotlin/manager/CollectionManager.kt

@@ -13,7 +13,6 @@ class CollectionManager(
 
     fun addProduct(product: Product) {
         list.add(generateId(product))
-        io.println(list.toString())
     }
 
     fun generateId(product: Product): Product {
@@ -24,4 +23,6 @@ class CollectionManager(
             )
         return res
     }
+
+    fun getList(): LinkedList<Product> = list
 }