module ZuoraConnect::Controllers::Helpers

def authenticate_app_api_request
  start_time = Time.now
  if !request.headers["API-Token"].blank?
    @appinstance = ZuoraConnect::AppInstance.where(:api_token => request.headers["API-Token"]).first
    Rails.logger.debug("[#{@appinstance.id}] API REQUEST - API token") if !@appinstance.blank?
    check_instance
  else
    authenticate_or_request_with_http_basic do |username, password|
      @appinstance = ZuoraConnect::AppInstance.where(:token => password).first
      @appinstance ||= ZuoraConnect::AppInstance.where(:api_token => password).first
      Rails.logger.debug("[#{@appinstance.id}] API REQUEST - Basic Auth") if !@appinstance.blank?
      check_instance
    end
  end
  Rails.logger.info("[#{@appinstance.blank? ? "N/A" : @appinstance.id}] Authenticate App API Request Completed In - #{(Time.now - start_time).round(2)}s")
end

def authenticate_connect_app_request
  start_time = Time.now
  if ZuoraConnect.configuration.mode == "Production"
    if request["data"]
      setup_instance_via_data
    else
      setup_instance_via_session
    end
  else
    setup_instance_via_dev_mode
  end
  #Call .data_lookup with the current session to retrieve session. In some cases session may be stored/cache in redis 
  #so data lookup provides a model method that can be overriden per app.
  @appinstance.new_session(:session => @appinstance.data_lookup(:session => session))
  PaperTrail.whodunnit =  session["#{@appinstance.id}::user::email"] if defined?(PaperTrail) && session["#{@appinstance.id}::user::email"].present? 
  begin
    I18n.locale = session["#{@appinstance.id}::user::locale"] ?  session["#{@appinstance.id}::user::locale"] : @appinstance.locale
  rescue I18n::InvalidLocale => ex
    Rails.logger.error("Invalid Locale: #{ex.message}")
  end
  Time.zone = session["#{@appinstance.id}::user::timezone"] ? session["#{@appinstance.id}::user::timezone"] : @appinstance.timezone
  Rails.logger.info("[#{@appinstance.blank? ? "N/A" : @appinstance.id}] Authenticate App Request Completed In - #{(Time.now - start_time).round(2)}s")
end

def check_connect_admin
  return session["#{@appinstance.id}::admin"]
end

def check_connect_admin!
  raise ZuoraConnect::Exceptions::AccessDenied.new("User is not an authorized admin for this application") if !session["#{@appinstance.id}::admin"]
end

def check_instance
  if !@appinstance.blank?
    @appinstance.new_session(:session => @appinstance.data_lookup(:session => session))
    Thread.current[:appinstance] = @appinstance
    PaperTrail.whodunnit = "API User" if defined?(PaperTrail)
    return  @appinstance.valid
  else
    render text: "Access Denied", status: :unauthorized
  end
end

def persist_connect_app_session
  if @appinstance.present?
    if defined?(Redis.current) && Rails.application.config.session_store.to_s == "RedisSessionStore"
      @appinstance.cache_app_instance
    else
      session.merge!(@appinstance.save_data)
    end
  end
end

def setup_instance_via_data
  session["valid"] |= false
  reset_session
  values = JSON.parse(ZuoraConnect::AppInstance.decrypt_response(Base64.urlsafe_decode64(request["data"])))
  Rails.logger.debug("Data: #{values.to_json}")
  if values["param_data"]
    values["param_data"].each do |k ,v|
      params[k] = v
    end
  end
  session["#{values["appInstance"]}::destroy"] = values["destroy"]
  session["#{values["appInstance"]}::valid"] = false
  session["appInstance"] = values["appInstance"]
  if values["current_user"]
    session["#{values["appInstance"]}::admin"] = values["current_user"]["admin"] ? values["current_user"]["admin"] : false
    session["#{values["appInstance"]}::user::timezone"] = values["current_user"]["timezone"]
    session["#{values["appInstance"]}::user::locale"] = values["current_user"]["locale"]
    session["#{values["appInstance"]}::user::email"] = values["current_user"]["email"]
  end
  @appinstance = ZuoraConnect::AppInstance.where(:id => values["appInstance"].to_i).first
  if @appinstance.blank?
    Apartment::Tenant.switch!("public")
    Apartment::Tenant.create(values["appInstance"].to_s)
    @appinstance = ZuoraConnect::AppInstance.create!(:api_token =>  values[:api_token],:id => values["appInstance"].to_i, :access_token => values["access_token"].blank? ? values["user"] : values["access_token"], :token => values["refresh_token"]  , :refresh_token => values["refresh_token"].blank? ? values["key"] : values["refresh_token"], :oauth_expires_at => values["expires"])
  end
  Rails.logger.debug("[#{@appinstance.id}] App Params: #{values.inspect}}") if Rails.env != "production"
  @appinstance.access_token = values["access_token"] if !values["access_token"].blank? && @appinstance.access_token != values["access_token"]
  @appinstance.refresh_token = values["refresh_token"] if !values["refresh_token"].blank? && @appinstance.refresh_token != values["refresh_token"]
  @appinstance.oauth_expires_at = values["expires"] if !values["expires"].blank?
  @appinstance.api_token = values["api_token"] if !values["api_token"].blank? && @appinstance.api_token != values["api_token"]
  @appinstance.save
end

def setup_instance_via_dev_mode
  session["appInstance"] = ZuoraConnect.configuration.dev_mode_appinstance
  user = ZuoraConnect.configuration.dev_mode_user
  key = ZuoraConnect.configuration.dev_mode_pass
  session["valid"] = true
  values = {:user => user , :key => key, :appinstance => session["appInstance"]}
  @appinstance = ZuoraConnect::AppInstance.where(:id => values[:appinstance].to_i).first
  if @appinstance.blank?
    Apartment::Tenant.switch!("public")
    Apartment::Tenant.create(values[:appinstance].to_s)
    @appinstance = ZuoraConnect::AppInstance.create!(:id => values[:appinstance].to_i, :access_token => values[:user], :refresh_token => values[:key])
  end
  if @appinstance.access_token.blank? || @appinstance.refresh_token.blank?
    @appinstance.update_attributes(:access_token =>  values["user"], :refresh_token =>  values["key"])
  end
  session["#{@appinstance.id}::admin"] =  ZuoraConnect.configuration.dev_mode_admin
end

def setup_instance_via_session
  if !session["appInstance"].blank?
    @appinstance = ZuoraConnect::AppInstance.where(:id => session["appInstance"]).first
  else
    raise ZuoraConnect::Exceptions::SessionInvalid.new("Session Blank -- Relaunch Application")
  end
end