4 files changed, 87 insertions, 0 deletions
diff --git a/app/services/addresses/address_services_base.rb b/app/services/addresses/address_services_base.rb
new file mode 100644
index 0000000..06ffde7
--- /dev/null
+++ b/app/services/addresses/address_services_base.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Addresses
+  # The base class for all addresses' services.
+  class AddressServicesBase
+    def initialize(user_account, params)
+      @user_account = user_account
+      @params = params
+    end
+
+    private
+
+    def already_existing_address
+      @already_existing_address ||= Address.find_by(@params)
+    end
+
+    def add_address_to_user_addresses
+      already_existing_address.user_accounts << @user_account
+      already_existing_address.save
+    end
+  end
+end
diff --git a/app/services/addresses/create_address_service.rb b/app/services/addresses/create_address_service.rb
new file mode 100644
index 0000000..ef593a4
--- /dev/null
+++ b/app/services/addresses/create_address_service.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Addresses
+  # The service for address creation.
+  class CreateAddressService < AddressServicesBase
+    attr_reader :address
+
+    def call
+      if already_existing_address.nil?
+        @address = Address.new(@params)
+        @address.user_accounts << @user_account
+        @address.save
+      else
+        add_address_to_user_addresses
+        @address = already_existing_address
+      end
+    end
+  end
+end
diff --git a/app/services/addresses/destroy_address_service.rb b/app/services/addresses/destroy_address_service.rb
new file mode 100644
index 0000000..e217d11
--- /dev/null
+++ b/app/services/addresses/destroy_address_service.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Addresses
+  # The service for address deletion.
+  class DestroyAddressService < AddressServicesBase
+    def initialize(user_account, params, address)
+      super(user_account, params)
+      @address = address
+    end
+
+    def call
+      UserAccountAddress.find_by(address_id: @address.id, user_account_id: @user_account.id).destroy
+      return unless @address.user_accounts.count.zero?
+
+      @address.destroy
+    end
+  end
+end
diff --git a/app/services/addresses/update_address_service.rb b/app/services/addresses/update_address_service.rb
new file mode 100644
index 0000000..fe26b05
--- /dev/null
+++ b/app/services/addresses/update_address_service.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module Addresses
+  # The service for address creation.
+  class UpdateAddressService < AddressServicesBase
+    attr_reader :address
+
+    def initialize(user_account, address_id, params)
+      super(user_account, params)
+      @address_id = address_id
+    end
+
+    def call
+      @address = @user_account.addresses.find_by(id: @address_id)
+
+      return :not_found if @address.nil?
+
+      if already_existing_address.nil?
+        return :unprocessable_entity unless @address.update(@params)
+      else
+        add_address_to_user_addresses
+        @address.user_account_addresses.find_by(user_account_id: @user_account.id).destroy
+        @address.destroy if @address.user_accounts.count.zero?
+        @address = already_existing_address
+      end
+    end
+  end
+end