demarches-normaliennes/app/models/champs/carte_champ.rb
2021-06-24 11:39:49 +02:00

128 lines
3.1 KiB
Ruby

# == Schema Information
#
# Table name: champs
#
# id :integer not null, primary key
# data :jsonb
# fetch_external_data_exceptions :string is an Array
# private :boolean default(FALSE), not null
# row :integer
# type :string
# value :string
# created_at :datetime
# updated_at :datetime
# dossier_id :integer
# etablissement_id :integer
# external_id :string
# parent_id :bigint
# type_de_champ_id :integer
#
class Champs::CarteChamp < Champ
# Default map location. Center of the World, ahm, France...
DEFAULT_LON = 2.428462
DEFAULT_LAT = 46.538192
# We are not using scopes here as we want to access
# the following collections on unsaved records.
def cadastres
geo_areas.filter do |area|
area.source == GeoArea.sources.fetch(:cadastre)
end
end
def selections_utilisateur
geo_areas.filter do |area|
area.source == GeoArea.sources.fetch(:selection_utilisateur)
end
end
def cadastres?
type_de_champ.layer_enabled?(:cadastres)
end
def optional_layers
type_de_champ.carte_optional_layers
end
def render_options
{ layers: optional_layers }
end
def position
if dossier.present?
dossier.geo_position
else
lon = DEFAULT_LON.to_s
lat = DEFAULT_LAT.to_s
zoom = "13"
{ lon: lon, lat: lat, zoom: zoom }
end
end
def bounding_box
factory = RGeo::Geographic.simple_mercator_factory
bounding_box = RGeo::Cartesian::BoundingBox.new(factory)
if geo_areas.present?
geo_areas.filter_map(&:rgeo_geometry).each do |geometry|
bounding_box.add(geometry)
end
elsif dossier.present?
point = dossier.geo_position
bounding_box.add(factory.point(point[:lon], point[:lat]))
else
bounding_box.add(factory.point(DEFAULT_LON, DEFAULT_LAT))
end
[bounding_box.max_point, bounding_box.min_point].compact.flat_map(&:coordinates)
end
def to_feature_collection
{
type: 'FeatureCollection',
id: stable_id,
bbox: bounding_box,
features: geo_areas.map(&:to_feature)
}
end
def geometry?
geo_areas.present?
end
def selection_utilisateur_legacy_geo_area
geometry = selection_utilisateur_legacy_geometry
if geometry.present?
GeoArea.new(
source: GeoArea.sources.fetch(:selection_utilisateur),
geometry: geometry
)
end
end
def for_api
nil
end
def for_export
nil
end
private
def selection_utilisateur_legacy_geometry
if selections_utilisateur.present?
{
type: 'MultiPolygon',
coordinates: selections_utilisateur.filter do |selection_utilisateur|
selection_utilisateur.geometry['type'] == 'Polygon'
end.map do |selection_utilisateur|
selection_utilisateur.geometry['coordinates']
end
}
else
nil
end
end
end