WIP

lib/customer_service/aggregates/customer.ex

@@ -0,0 +1,44 @@
+defmodule CustomerService.Aggregates.Customer do
+  defstruct [
+    :id,
+    :first_name,
+    :last_name,
+    :birth_date,
+    :gender,
+    :email,
+    :phone
+  ]
+
+  alias __MODULE__
+  alias Commanded.Aggregates.Aggregate
+  alias CustomerService.Commands
+  alias CustomerService.Events
+
+  @behaviour Aggregate
+  @impl Aggregate
+  def execute(%Customer{id: nil}, %Commands.CreateCustomer{} = cmd) do
+    %Events.CustomerCreated{
+      id: cmd.id,
+      first_name: cmd.first_name,
+      last_name: cmd.last_name,
+      birth_date: cmd.birth_date,
+      gender: cmd.gender,
+      email: cmd.email,
+      phone: cmd.phone
+    }
+  end
+
+  @impl Aggregate
+  def apply(%Customer{} = c, %Events.CustomerCreated{} = e) do
+    %Customer{
+      c
+      | id: e.id,
+        first_name: e.first_name,
+        last_name: e.last_name,
+        birth_date: e.birth_date,
+        gender: e.gender,
+        email: e.email,
+        phone: e.phone
+    }
+  end
+end