Class: UssdEngine::Middleware::NaloProcessor

Inherits:
Object
  • Object
show all
Defined in:
lib/ussd_engine/middleware/nalo_processor.rb

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ NaloProcessor

Returns a new instance of NaloProcessor.



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# File 'lib/ussd_engine/middleware/nalo_processor.rb', line 6

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/ussd_engine/middleware/nalo_processor.rb', line 10

def call(env)
  input = env["rack.input"].read
  env["rack.input"].rewind
  if input.present?
    params = JSON.parse input
    if params["USERID"].present? && params["MSISDN"].present?
      env["ussd_engine.request"] = {
        provider: :nalo,
        network: nil,
        msisdn: Phonelib.parse(params["MSISDN"]).e164,
        type: params["MSGTYPE"] ? :initial : :response,
        input: params["USERDATA"].presence,
        network: nil,
      }
    end
  end

  status, headers, response = @app.call(env)

  if env["ussd_engine.response"].present? && env["ussd_engine.request"][:provider] == :nalo
    status = 200
    response =
      {
        USERID: params["USERID"],
        MSISDN: params["MSISDN"],
        MSG: env["ussd_engine.response"][:body],
        MSGTYPE: env["ussd_engine.response"][:type] != :terminal,
      }.to_json
    headers = headers.merge({ "Content-Type" => "application/json", "Content-Length" => response.bytesize.to_s })
    response = [response]
  end
  [status, headers, response]
end