5 files changed, 136 insertions, 0 deletions
diff --git a/app/controllers/api/addresses_controller.rb b/app/controllers/api/addresses_controller.rb
new file mode 100644
index 0000000..4eda02d
--- /dev/null
+++ b/app/controllers/api/addresses_controller.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+module Api
+  # AddressesController
+  class AddressesController < AuthenticatedController
+    def index
+      @addresses = current_user_account.addresses
+
+      render json: serialized_collection.serializable_hash, status: :ok
+    end
+
+    def create
+      @service = Services::CreateAddressService.new(current_user_account, service_params)
+
+      unless @service.call
+        render json: { error_messages: @service.address.errors.full_messages }, status: :unprocessable_entity
+        return
+      end
+
+      @address = @service.address
+      render json: serialized_object.serializable_hash, status: :ok
+    end
+
+    def update
+      @service = Services::UpdateAddressService.new(current_user_account, params[:id], service_params)
+
+      case @service.call
+      when :not_found
+        render json: { error_message: 'Not found' }, status: :not_found
+      when :unprocessable_entity
+        render json: { error_messages: @service.address.errors.full_messages }, status: :unprocessable_entity
+      else
+        @address = @service.address
+        render json: serialized_object.serializable_hash, status: :ok
+      end
+    end
+
+    def destroy
+      @address = Address.find_by(id: params[:id])
+
+      render json: { error_message: 'Not found' }, status: :not_found and return if @address.nil?
+
+      @address.destroy
+      render status: :see_other
+    end
+
+    private
+
+    def serialized_object
+      Serializers::AddressSerializer.new(@address)
+    end
+
+    def serialized_collection
+      Serializers::AddressSerializer.new(@addresses.page(params[:page]))
+    end
+
+    def service_params
+      params.require(:number, :street, :zip_code, :country, :city)
+    end
+  end
+end
diff --git a/app/controllers/serializers/address_serializer.rb b/app/controllers/serializers/address_serializer.rb
new file mode 100644
index 0000000..0956719
--- /dev/null
+++ b/app/controllers/serializers/address_serializer.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+module Serializers
+  # AddressSerializer
+  class AddressSerializer < BaseSerializer
+    attributes :id, :number, :zip_code, :country, :city
+  end
+end
diff --git a/app/controllers/services/address_services_base.rb b/app/controllers/services/address_services_base.rb
new file mode 100644
index 0000000..622873e
--- /dev/null
+++ b/app/controllers/services/address_services_base.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+module Services
+  # 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/controllers/services/create_address_service.rb b/app/controllers/services/create_address_service.rb
new file mode 100644
index 0000000..7b67af2
--- /dev/null
+++ b/app/controllers/services/create_address_service.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Services
+  # The service for address creation.
+  class CreateAddressService < AddressServicesBase
+    attr_reader :address
+
+    def call
+      if already_existing_address.nil?
+        @address = @user_account.address.new(@params)
+        @address.save
+      else
+        add_address_to_user_addresses
+        @address = already_existing_address
+      end
+    end
+  end
+end
diff --git a/app/controllers/services/update_address_service.rb b/app/controllers/services/update_address_service.rb
new file mode 100644
index 0000000..9f1ce54
--- /dev/null
+++ b/app/controllers/services/update_address_service.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+module Services
+  # 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 = Address.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.destroy if @address.user_accounts.count.zero?
+        @address = already_existing_address
+      end
+    end
+  end
+end