module RingCentralSdk
  module REST
    # ExtensionPresence is a helper class to manage presence info
    class ExtensionPresence
      attr_accessor :client
      attr_accessor :account_id
      attr_accessor :extension_id
      attr_accessor :presence_data

      def initialize(extension_id, opts = {})
        @client = opts.key?(:client) ? opts[:client] : nil
        @account_id = '~'
        @extension_id = extension_id.to_s
        @presence_data = {}
      end

      def retrieve
        raise 'extension_id is not an integer' if @extension_id !~ /^[0-9]+$/

        res = @client.http.get do |req|
          req.url "account/#{@account_id}/extension/#{@extension_id}/presence"
        end

        @presence_data = res.body

        @presence_data
      end

      def department_calls_enable(enable)
        retrieve

        unless @presence.is_a?(Hash) && @presence_data.key?('dndStatus')
          raise 'invalid presence info'
        end

        current_status = @presence_data['dndStatus']
        new_status = new_status_dnd_department_calls(current_status, enable)

        update(dndStatus: new_status) if current_status != new_status
        new_status
      end

      def department_calls_enabled?(reload = false)
        if reload
          retrieve
        elsif !@presence_data.key?('dndStatus')
          retrieve
        end

        current_status = @presence_data['dndStatus']

        status_enabled = {
          'DoNotAcceptAnyCalls' => false,
          'DoNotAcceptDepartmentCalls' => false,
          'TakeAllCalls' => true,
          'TakeDepartmentCallsOnly' => true
        }

        status_enabled.key?(current_status) ? status_enabled[current_status] : nil
      end

      def update(body = nil)
        raise 'HTTP request body is required to update presence' if body.nil?

        res = @client.http.put do |req|
          req.url "account/#{@account_id}/extension/#{@extension_id}/presence"
          req.headers['Content-Type'] = 'application/json'
          req.body = body
        end

        @presence_data = res.body

        @presence_data
      end

      def new_status_dnd_department_calls(current_status, enable)
        new_statuses = {
          enable: {
            'DoNotAcceptAnyCalls' => 'TakeDepartmentCallsOnly',
            'DoNotAcceptDepartmentCalls' => 'TakeAllCalls'
          },
          disable: {
            'TakeAllCalls' => 'DoNotAcceptDepartmentCalls',
            'TakeDepartmentCallsOnly' => 'DoNotAcceptAnyCalls'
          }
        }

        action = enable ? :enable : :disable

        new_status = current_status

        new_status = new_statuses[action][current_status.to_s] \
          if new_statuses[action].key?(current_status.to_s)

        new_status
      end
    end
  end
end