class ExportController < ApplicationController
  def start
  end

  def finish
    bbox = BoundingBox.new(params[:minlon], params[:minlat], params[:maxlon], params[:maxlat])
    format = params[:format]

    if format == "osm"
      redirect_to "http://api.openstreetmap.org/api/#{API_VERSION}/map?bbox=#{bbox}"
    elsif format == "mapnik"
      format = params[:mapnik_format]
      scale = params[:mapnik_scale]

      redirect_to "http://tile.openstreetmap.org/cgi-bin/export?bbox=#{bbox}&scale=#{scale}&format=#{format}"
    elsif format == "osmarender"
      format = params[:osmarender_format]
      zoom = params[:osmarender_zoom].to_i
      width = bbox.slippy_width(zoom).to_i
      height = bbox.slippy_height(zoom).to_i

      redirect_to "http://tah.openstreetmap.org/MapOf/index.php?long=#{bbox.centre_lon}&lat=#{bbox.centre_lat}&z=#{zoom}&w=#{width}&h=#{height}&format=#{format}"
    end
  end
end