af83/chouette-core

module Shapes
  class GenerateGeoJson < ApplicationService
        attr_reader :object

        def initialize(shape, journey_pattern)
            @object = shape.persisted? ? ShapeDecorator.new(shape, journey_pattern) : journey_pattern
        end

        def call
            Rabl::Renderer.new("#{object.model_name.plural}/show.geo", object, view_path: 'app/views', format: :json)
        end

        class ShapeDecorator < SimpleDelegator
            def initialize(shape, jp)
                super shape
                @journey_pattern = jp
            end

            def name
                super || @journey_pattern.published_name || ''
            end

            def waypoints
                collection = super
                collection =  geometry.points if collection.empty?

                collection.map { |i| WaypointDecorator.new(i) }
            end
        end

        class WaypointDecorator < SimpleDelegator
            def name
                super
            rescue
                ''
            end

            def waypoint_type
                super
            rescue
                'waypoint'
            end
        end
    end
end