Initial commit

app/models/refund.rb

@@ -0,0 +1,50 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class Refund < ApplicationRecord
+  extend Enumerize
+  include AASM
+  include AASM::Locking
+
+  belongs_to :deposit, required: true
+
+  aasm column: :state, whiny_transitions: false do
+    state :pending, initial: true
+    state :processed
+    state :failed
+
+    event :process do
+      transitions from: :pending, to: :processed
+      after do
+        process_refund!
+      end
+    end
+
+    event :fail do
+      transitions from: %i[pending processed], to: :failed
+    end
+  end
+
+  def process_refund!
+    transaction = WalletService.new(Wallet.deposit.find_by(currency: deposit.currency)).refund!(self)
+    deposit.refund! if transaction.present?
+  end
+end
+
+# == Schema Information
+# Schema version: 20201125134745
+#
+# Table name: refunds
+#
+#  id         :bigint           not null, primary key
+#  deposit_id :bigint           not null
+#  state      :string(30)       not null
+#  address    :string(255)      not null
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+# Indexes
+#
+#  index_refunds_on_deposit_id  (deposit_id)
+#  index_refunds_on_state       (state)
+#