module GmapCoordinatesPicker #:nodoc
  module ViewHelper #:nodoc
    def render_gmap_coordinate_picker(options={})

      unless options[:static].to_s == 'true'
        lat_column = options[:gmap_conf][:lat_column]
        lng_column = options[:gmap_conf][:lng_column]
        lat_column_value = options[:object].present? ? options[:object].send(lat_column) : default_coordinates[0]
        lng_column_value = options[:object].present? ? options[:object].send(lng_column) : default_coordinates[1]
        prefix = options[:object].present? ? options[:object].class.name.downcase : "gmap_coordinate_picker"
        lat_dom_id = "#{prefix}_#{lat_column}"
        lng_dom_id = "#{prefix}_#{lng_column}"
      end

      default_locals = {
          :api_key => options[:api_key],
          :map_handler => options[:map_handler] || 'gMapObj',
          :zoom_level => options[:zoom_level] || 10,
          :map_container => "gmap_coordinate_picker_container_#{Time.now.to_i}",
          :map_container_class => options[:map_container_class],
          :map_width => options[:map_width] || "600px",
          :map_height => options[:map_height] ||"400px",
          :default_coordinates => options[:default_coordinates] || [0, 0],
      }

      editable_map_locals = {

          :lat_column => lat_column,
          :lng_column => lng_column,
          :lat_column_value => lat_column_value,
          :lng_column_value => lng_column_value,
          :map_container => "#{prefix}_#{lat_column}_#{lng_column}_container#{Time.now.to_i}",
          :lat_dom_id => lat_dom_id,
          :lng_dom_id => lng_dom_id,
          :lat_field => lat_lng_field(lat_column, lat_column_value, lat_dom_id, options),
          :lng_field => lat_lng_field(lng_column, lng_column_value, lng_dom_id, options)
      }
      unless options[:static].to_s == 'true'
        render :partial => 'gmap_coordinate_picker/gmap_coordinate_picker', :locals => default_locals.merge(editable_map_locals)
      else
        render :partial => 'gmap_coordinate_picker/render_map', :locals => default_locals
      end
    end

    private
    def lat_lng_field(column, value,dom_id, options={})
      if options[:object]
        hidden_field(column, {:value => value, :id =>dom_id})
      else
        hidden_field_tag(column, nil, {:id =>dom_id})
      end
    end


  end
end