require 'calabash-android/abase'

class AndroidScreenBase < Calabash::ABase

  def self.element(element_name, &block)
    define_method(element_name.to_s, *block)
  end

  class << self
    alias :value :element
    alias :action :element
    alias :trait :element
  end

  element(:loading_screen)      {"insert_loading_view_id"}

  # The progress bar of the application is a custom view
  def wait_for_progress
    wait_for_element_does_not_exist("* id:'#{loading_screen}'", { :timeout => 10 } )
  end

  def drag_to direction

    positions = [0,0,0,0] # [ 'from_x', 'to_x', 'from_y', 'to_y' ]

    case(direction)
    when :<%= (I18n.translate "directions.down").to_sym %>
      positions = [30,30,60,30]
    when :<%= (I18n.translate "directions.up").to_sym %>
      positions = [80,80,60,90]
    when :<%= (I18n.translate "directions.left").to_sym %>
      positions = [90,20,80,80]
    when :<%= (I18n.translate "directions.right").to_sym %>
      positions = [20,90,80,80]
    end

    # perform_action( 'action', 'from_x', 'to_x', 'from_y', 'to_y', 'number of steps (in this case, velocity of drag' )
    perform_action('drag', positions[0], positions[1], positions[2], positions[3], 15)
    
    sleep(1)
  end

  def drag_until_element_is_visible_with_special_query direction, element
    drag_until_element_is_visible direction, element, "* {text CONTAINS[c] '#{element}'}"
  end

  def drag_until_element_is_visible direction, element, query = nil, limit = 15
    i = 0

    element_query = ""
    if query.nil?
      element_query = "* marked:'#{element}'"
    else
      element_query = query
    end

    sleep(2)
    while( !element_exists(element_query) and i < limit) do
      drag_to direction
      i = i + 1
    end

    raise ("Executed #{limit} moviments #{direction.to_s} and the element '#{element}' was not found on this view!") unless i < limit
  end

  def drag_for_specified_number_of_times direction, times
    times.times do
      drag_to direction
    end
  end

  # Negation indicates that we want a page that doesn't has the message passed as parameter
  def is_on_page? page_text, negation = ''
    begin
      wait_for(timeout: 5) { has_text? page_text }
      # If negation is not nil, we should raise an error if this message was found on the view
      raise "Unexpected Page. The page should not have: '${page_text}'" unless negation == ""
    rescue
      # only raise exception if negation is nil, otherwise this is the expected behaviour
      raise "Unexpected Page. Expected was: '#{page_text}'" if negation == ""
    end
  end

  def enter text, element, query = nil
    if query.nil?
      query( "* marked:'#{element}'", {:setText => text} )
    else
      query( query, {:setText => text} )
    end
  end

  def touch_screen_element element, query = nil
    query = "* id:'#{element}'" if query.nil?
    wait_for(timeout: 5) { element_exists(query) }
    touch(query)
  end  

  def touch_element_by_index id, index
    wait_for(:timeout => 5) { element_exists("* id:'#{id}' index:#{index}") }
    touch("* id:'#{id}' index:#{index}")
  end

  def clear_text_field field
    clear_text_in("android.widget.EditText id:'#{field}'}")
  end

  def select_date_on_date_picker date, date_picker_field_id
    # Touch the date picker field
    touch "* id:'#{date_picker_field_id}'"

    # Setting the date
    set_date 'DatePicker', date.year, date.month, date.day

    # Clicking in the Done button
    touch "* id:'button1'"
  end

end