error.rb in paddle-2.3.0

- old
+ new
@@ -1,4 +1,127 @@
 module Paddle
   class Error < StandardError
+    attr_reader :http_status_code
+    attr_reader :paddle_error_code
+    attr_reader :paddle_error_message
+
+    def initialize(response_body, http_status_code)
+      @response_body = response_body
+      @http_status_code = http_status_code
+      set_paddle_error_values
+      super(build_message)
+    end
+
+    private
+
+    def set_paddle_error_values
+      @paddle_error_code = @response_body.dig("error", "code")
+      @paddle_error_message = @response_body.dig("error", "detail")
+    end
+
+    def error_message
+      @paddle_error_message || @response_body.dig("error", "code")
+    rescue NoMethodError
+      "An unknown error occurred."
+    end
+
+    def build_message
+      if paddle_error_code.nil?
+        return "Error #{@http_status_code}: #{error_message}"
+      end
+      "Error #{@http_status_code}: #{error_message} '#{paddle_error_code}'"
+    end
+  end
+
+  class BadRequestError < Error
+    private
+
+    def error_message
+      "Your request was malformed."
+    end
+  end
+
+  class AuthenticationMissingError < Error
+    private
+
+    def error_message
+      "You did not supply valid authentication credentials."
+    end
+  end
+
+  class ForbiddenError < Error
+    private
+
+    def error_message
+      "You are not allowed to perform that action."
+    end
+  end
+
+  class EntityNotFoundError < Error
+    private
+
+    def error_message
+      "No results were found for your request."
+    end
+  end
+
+  class ConflictError < Error
+    private
+
+    def error_message
+      "Your request was a conflict."
+    end
+  end
+
+  class TooManyRequestsError < Error
+    private
+
+    def error_message
+      "Your request exceeded the API rate limit."
+    end
+  end
+
+  class InternalError < Error
+    private
+
+    def error_message
+      "We were unable to perform the request due to server-side problems."
+    end
+  end
+
+  class ServiceUnavailableError < Error
+    private
+
+    def error_message
+      "You have been rate limited for sending more than 20 requests per second."
+    end
+  end
+
+  class NotImplementedError < Error
+    private
+
+    def error_message
+      "This resource has not been implemented."
+    end
+  end
+
+
+  class ErrorFactory
+    HTTP_ERROR_MAP = {
+      400 => BadRequestError,
+      401 => AuthenticationMissingError,
+      403 => ForbiddenError,
+      404 => EntityNotFoundError,
+      409 => ConflictError,
+      429 => TooManyRequestsError,
+      500 => InternalError,
+      503 => ServiceUnavailableError,
+      501 => NotImplementedError
+    }.freeze
+
+    def self.create(response_body, http_status_code)
+      status = http_status_code
+      error_class = HTTP_ERROR_MAP[status] || Error
+      error_class.new(response_body, http_status_code) if error_class
+    end
   end
 end