Class: JSON_ROA::Middleware

Inherits:

Faraday::Middleware

• Object
• Faraday::Middleware
• JSON_ROA::Middleware

Defined in:

lib/json_roa/client.rb

Instance Method Summary

• #call(env) ⇒ Object

Instance Method Details

#call(env) ⇒ Object

# File 'lib/json_roa/client.rb', line 12

def call(env)
  @app.call(env).on_complete do |env|
    env.class.class_eval do |klass|
      attr_accessor :json_roa_data
    end
    content_type = env.response_headers['content-type']
    if  content_type  && content_type =~ /json-roa/
      if env.body.is_a? Array
        env.json_roa_data = env.body.first
        env.body.delete_at 0
      elsif env.body.is_a? Hash
        env.json_roa_data = env.body.delete('_json-roa')
      end
      json_roa_version = env.json_roa_data['version'] || env.json_roa_data['json-roa_version']
      major_version =
        begin
          Integer(/^(\d+).*/.match(json_roa_version)[1])
        rescue StandardError
          raise VersionError,
            'Failed to infer the major number of the JSON-ROA data.'
        end
      unless major_version == 1
        raise VersionError, 'The major version' \
          " #{major_version} is not supported by this client."
      end
    end
  end
end