Initial commit

app/models/internal_transfer.rb

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+class InternalTransfer < ApplicationRecord
+  # == Constants ============================================================
+  # == Attributes ===========================================================
+  # == Extensions ===========================================================
+
+  acts_as_eventable prefix: 'internal_transfer', on: %i[create update]
+
+  # == Relationships ========================================================
+
+  belongs_to :currency
+  belongs_to :sender, class_name: :Member, required: true
+  belongs_to :receiver, class_name: :Member, required: true
+
+  # == Validations ==========================================================
+
+  validates :currency, :amount, :sender, :receiver, :state, presence: true
+
+  # == Scopes ===============================================================
+  # == Callbacks ============================================================
+
+  before_commit on: :create do
+    InternalTransfer.transaction do
+      liabilities = [
+        Operations::Liability.debit!(amount: amount, currency: currency, reference: self, member_id: sender_id),
+        Operations::Liability.credit!(amount: amount, currency: currency, reference: self, member_id: receiver_id)
+      ]
+      liabilities.each { |l| Operations.update_legacy_balance(l) }
+    end
+  end
+
+  # == Class Methods ========================================================
+  # == Instance Methods =====================================================
+
+  enum state: { completed: 1 }
+
+  def direction(user)
+    user == sender ? 'out' : 'in'
+  end
+
+end
+
+# == Schema Information
+# Schema version: 20210120133912
+#
+# Table name: internal_transfers
+#
+#  id          :bigint           not null, primary key
+#  currency_id :string(255)      not null
+#  amount      :decimal(32, 16)  not null
+#  sender_id   :bigint           not null
+#  receiver_id :bigint           not null
+#  state       :integer          not null
+#  created_at  :datetime         not null
+#  updated_at  :datetime         not null
+#