Class: UssdEngine::Middleware::NsanoProcessor

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

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ NsanoProcessor

Returns a new instance of NsanoProcessor.



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# File 'lib/ussd_engine/middleware/nsano_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/nsano_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["network"].present? && params["UserSessionID"].present?
      request_id = "nsano::request_id::#{params["UserSessionID"]}"
      env["ussd_engine.request"] = {
        provider: :nsano,
        network: params["network"].to_sym,
        msisdn: Phonelib.parse(params["msisdn"]).e164,
        type: Config.cache&.read(request_id).present? ? :response : :initial,
        input: params["msg"].presence,
        network: params["network"],
      }
    end
  end

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

  if env["ussd_engine.response"].present? && env["ussd_engine.request"][:provider] == :nsano
    if env["ussd_engine.response"][:type] == :terminal
      Config.cache&.write(request_id, nil)
    else
      Config.cache&.write(request_id, 1)
    end

    status = 200
    response =
      {
        USSDResp: {
          action: env["ussd_engine.response"][:type] == :terminal ? :prompt : :input,
          menus: "",
          title: env["ussd_engine.response"][:body],
        },
      }.to_json
    headers = headers.merge({ "Content-Type" => "application/json", "Content-Length" => response.bytesize.to_s })
    response = [response]
  end
  [status, headers, response]
end