class BbStudentCommonApi
    def element_exists_by_id?(my_id, my_timeout=nil)
      $driver.set_wait timeout=0
      if my_timeout.nil?
        my_timeout=5
      end
      wait = Selenium::WebDriver::Wait.new :timeout => my_timeout
      begin
        wait.until {$driver.find_element(my_id).displayed? }
        return true
      rescue
        return false
      end
    end

    #This one is less common by element_exists_by_id, but could be useful.
    def element_exists_by_text?(my_text, my_timeout)
      if my_timeout.nil?
        my_timeout=5
      end
      $driver.set_wait timeout=0
      wait = Selenium::WebDriver::Wait.new :timeout => my_timeout
      begin
        wait.until { text(my_text) }
        return true
      rescue
        return false
      end
    end



    #Examples:
    #  $bb.find_element(@my_id,5,"click")
    #  $bb.find_element(@my_id,2,"send_keys","hello there")
    #  $bb.find_element(@my_id,3)
    def find_element(my_id,my_timeout,action=nil,input=nil)
      #Doing some type checking first.
      if (!my_id.is_a?(Hash))
        raise Exception, "find_element ID of #{my_id} is not a hash!"
      end
      if (!my_timeout.is_a?(Integer))
        raise Exception, "find_element TIMEOUT of #{my_timeout} is not an integer!"
      end
      if (!action.nil?)
        if action!="click" and action!="send_keys"
          raise Exception, "find_element ACTION of #{action} not recognized!  Use either click or send_keys"
        end
      end
      if (!input.nil?)
        if (!input.is_a?(String))
          raise Exception, "find_element INPUT of #{input} is not a string!"
        end
      end

      $driver.set_wait timeout=0
      wait = Selenium::WebDriver::Wait.new :timeout => my_timeout

        case action
          when "click"
            begin
              wait.until {$driver.find_element(my_id).click}
            rescue
              raise Exception, "#{my_id} was not found after #{my_timeout} seconds!"
            end

          when "send_keys"
            begin
              wait.until {$driver.find_element(my_id).send_keys input  }
            rescue
              raise Exception, "#{my_id} was not found after #{my_timeout} seconds!"
            end
          else
            begin
              wait.until {$driver.find_element(my_id).displayed?}
            rescue
              raise Exception, "#{my_id} was not found after #{my_timeout} seconds!"
            end
        end
    end

    def find_elements(my_id,my_timeout)
      $driver.set_wait timeout=my_timeout
      wait = Selenium::WebDriver::Wait.new :timeout => my_timeout
      begin
        wait.until {$driver.find_element(my_id)}
      rescue
        raise Exception, "#{my_id} was not found after #{my_timeout} seconds!"
      end
    end

    #Low level swipe method.  Takes in percentages.  gets the height and width of devices and gets pixels
    def bb_swipe(start_x_percentage, start_y_percentage, end_x_percentage, end_y_percentage,duration)
      width = $driver.window_size[:width]
      height =  $driver.window_size[:height]

      start_x_pixel = start_x_percentage * width
      start_y_pixel = start_y_percentage * height
      end_x_pixel = end_y_percentage * width
      end_y_pixel = end_y_percentage * height

      action = Appium::TouchAction.new.press(x: start_x_pixel, y: start_y_pixel).wait(duration).move_to(x: end_x_pixel, y:  end_y_pixel).release()
      action.perform
    end

    #Swipe Commands.  Notes:
    #1.  We have variant methods for swiping right and left due to the duration field being different for android (250ms) vs iOS (500ms)
    #1a.  Reason:  iOS has a minimum of 500ms duration.  Android we change here to 250 to make the FTUE swipes work optimally.
    #2.  For the iOS simulator, generic swiping is broken so we cannot use the above bb_swipe method.
    #2b.  Workaround:  we use open-source https://github.com/vicwomg/swipeInWindow.py
    def swipe_right
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.5 0.2 0.5')
      elsif ENV['ANDROID_LOCAL_SIM'] == "TRUE" or ENV['ANDROID_LOCAL_DEVICE'] == "TRUE"
        bb_swipe(0.95, 0.2, 0.1, 0.2, 250)
      else
        bb_swipe(0.95, 0.2, 0.1, 0.2, 500)
      end
    end

    def swipe_left
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.2 0.5 0.9 0.5')
      elsif  ENV['ANDROID_LOCAL_SIM'] == "TRUE" or ENV['ANDROID_LOCAL_DEVICE'] == "TRUE"
        #modified on android for longer pause to lift finger at end (800ms)
        #should work with slide to tests/attempts and slide to continue tests/attempts
        bb_swipe(0.05, 0.9, 0.95, 0.9, 700)
      else
        bb_swipe(0.05, 0.95, 0.95, 0.9, 500)
      end
    end


    def swipe_to_start_assignment
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.1 0.95 0.9 0.95')
      elsif  ENV['ANDROID_LOCAL_SIM'] == "TRUE" or ENV['ANDROID_LOCAL_DEVICE'] == "TRUE"
        bb_swipe(0.2, 0.9, 0.9, 0.9, 250)
      else
        bb_swipe(0.2, 0.9, 0.9, 0.9, 500)
      end
    end


    def swipe_down_small
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.7 0.9 0.4')
      else
        bb_swipe(0.9, 0.7, 0.9, 0.4, 500)
      end
    end

    def swipe_down_very_small
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.57 0.9 0.55')
      else
        bb_swipe(0.9, 0.7, 0.9, 0.5, 500)
      end
    end

    def swipe_down_medium
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.9 0.9 0.5')
      else
        bb_swipe(0.9, 0.9, 0.9, 0.5, 500)
      end
    end

    def swipe_down_large
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.9 0.9 0.2')
      else
        bb_swipe(0.9, 0.9, 0.9, 0.2, 500)
      end
    end

    def swipe_up_small
       if ENV['IOS_LOCAL_SIM']=="TRUE"
         system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.4 0.9 0.7')
      else
        bb_swipe(0.9, 0.5, 0.9, 0.7, 500)
      end
    end

    def swipe_up_large
      if ENV['IOS_LOCAL_SIM']=="TRUE"
        system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.3 0.9 0.9')
      else
        bb_swipe(0.9, 0.3, 0.9, 0.9, 500)
      end
    end


      def swipe_up_very_large
        if ENV['IOS_LOCAL_SIM']=="TRUE"
          system('python ./bin/swipeInWindow.py "iOS Simulator" 0.9 0.1 0.9 0.95')
        else
          bb_swipe(0.9, 0.1, 0.9, 0.95, 500)
        end

    end



  end