module ActiveRecord  # :nodoc:
  module ConnectionAdapters  # :nodoc:
    module PostGISAdapter  # :nodoc:
      class MainAdapter < PostgreSQLAdapter  # :nodoc:
        SPATIAL_COLUMN_OPTIONS =
          {
            geography:           { geographic: true },
            geometry:            {},
            geometry_collection: {},
            line_string:         {},
            multi_line_string:   {},
            multi_point:         {},
            multi_polygon:       {},
            spatial:             {},
            st_point:            {},
            st_polygon:          {},
          }

        # http://postgis.17.x6.nabble.com/Default-SRID-td5001115.html
        DEFAULT_SRID = 0

        def initialize(*args)
          super
          @visitor = Arel::Visitors::PostGIS.new(self)
        end

        include PostGISAdapter::SchemaStatements

        # def schema_creation
        #   PostGISAdapter::SchemaCreation.new self
        # end

        def set_rgeo_factory_settings(factory_settings)
          @rgeo_factory_settings = factory_settings
        end

        def adapter_name
          ADAPTER_NAME
        end

        def self.spatial_column_options(key)
          SPATIAL_COLUMN_OPTIONS[key]
        end

        def postgis_lib_version
          @postgis_lib_version ||= select_value("SELECT PostGIS_Lib_Version()")
        end

        def default_srid
          DEFAULT_SRID
        end

        def srs_database_columns
          {
            auth_name_column: 'auth_name',
            auth_srid_column: 'auth_srid',
            proj4text_column: 'proj4text',
            srtext_column:    'srtext',
          }
        end

        def quote(value, column = nil)
          if RGeo::Feature::Geometry.check_type(value)
            "'#{ RGeo::WKRep::WKBGenerator.new(hex_format: true, type_format: :ewkb, emit_ewkb_srid: true).generate(value) }'"
          elsif value.is_a?(RGeo::Cartesian::BoundingBox)
            "'#{ value.min_x },#{ value.min_y },#{ value.max_x },#{ value.max_y }'::box"
          else
            super
          end
        end
      end
    end
  end
end