feat: add Ledger module and Ledger Transaction schema

Author: mFragaBA

apps/configurator/priv/repo/migrations/20250422163658_add_ledger_transaction.exs

@@ -0,0 +1,7 @@
+defmodule Configurator.Repo.Migrations.AddLedgerTransaction do
+  use Ecto.Migration
+
+  def change do
+
+  end
+end

apps/game_backend/lib/game_backend/ledger.ex

@@ -0,0 +1,6 @@
+defmodule GameBackend.Ledger do
+  @moduledoc """
+  """
+
+  alias GameBackend.Ledger.Transaction
+end

apps/game_backend/lib/game_backend/ledger/transaction.ex

@@ -0,0 +1,34 @@
+defmodule GameBackend.Ledger.Transaction do
+  @moduledoc """
+  The ledger will be used to keep track of a transaction log of each game
+  """
+  use GameBackend.Schema
+  import Ecto.Changeset
+
+  alias GameBackend.Users.User
+  alias GameBackend.Users.Currencies.Currency
+
+  schema "ledger_transactions" do
+      field(:type, Ecto.Enum, values: [:credit, :debit])
+      field(:amount, :integer)
+      field(:description, :string)
+      field(:game_id, :integer)
+
+      belongs_to(:user, User)
+      belongs_to(:currency, Currency)
+
+      timestamps(type: :utc_datetime)
+  end
+
+  def changeset(transaction, attrs) do
+    transaction
+    |> cast(attrs, [
+      :type,
+      :amount,
+      :description,
+      :user_id,
+      :currency_id,
+    ])
+    |> validate_required([:type, :amount, :description, :user_id, :currency_id])
+  end
+end

apps/game_backend/priv/repo/migrations/20250422163658_add_ledger_transaction.exs

@@ -0,0 +1,16 @@
+defmodule GameBackend.Repo.Migrations.AddLedgerTransaction do
+  use Ecto.Migration
+
+  def change do
+    create table(:ledger_transactions) do
+      add(:type, :string)
+      add(:amount, :integer)
+      add(:description, :string)
+      add(:user_id, references(:users))
+      add(:currency_id, references(:currencies))
+      add(:game_id, :integer, null: false)
+
+      timestamps(type: :utc_datetime)
+    end
+  end
+end