demarches-normaliennes/app/controllers/champs/carte_controller.rb

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class Champs::CarteController < ApplicationController
before_action :authenticate_logged_user!
def index
@selector = ".carte-#{params[:champ_id]}"
@champ = policy_scope(Champ).find(params[:champ_id])
@update_cadastres = params[:cadastres]
if @champ.cadastres? && @update_cadastres
@champ.geo_areas.cadastres.destroy_all
@champ.geo_areas += GeoArea.from_feature_collection(cadastres_features_collection(@champ.to_feature_collection))
@champ.save!
end
rescue ApiCarto::API::ResourceNotFound
flash.alert = 'Les données cartographiques sont temporairement indisponibles. Réessayez dans un instant.'
response.status = 503
end
def create
champ = policy_scope(Champ).find(params[:champ_id])
geo_area = champ.geo_areas.selections_utilisateur.new
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save_feature!(geo_area, params_feature)
render json: { feature: geo_area.to_feature }, status: :created
end
def update
champ = policy_scope(Champ).find(params[:champ_id])
geo_area = champ.geo_areas.selections_utilisateur.find(params[:id])
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save_feature!(geo_area, params_feature)
head :no_content
end
def destroy
champ = policy_scope(Champ).find(params[:champ_id])
champ.geo_areas.selections_utilisateur.find(params[:id]).destroy!
head :no_content
end
def import
champ = policy_scope(Champ).find(params[:champ_id])
params_features.each do |feature|
geo_area = champ.geo_areas.selections_utilisateur.new
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save_feature!(geo_area, feature)
end
render json: champ.to_feature_collection, status: :created
end
private
def params_feature
params[:feature]
end
def params_features
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params[:features]
end
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def save_feature!(geo_area, feature)
if feature[:geometry]
geo_area.geometry = feature[:geometry]
end
if feature[:properties] && feature[:properties][:description]
geo_area.description = feature[:properties][:description]
end
geo_area.save!
end
def cadastres_features_collection(feature_collection)
coordinates = feature_collection[:features].filter do |feature|
feature[:properties][:source] == GeoArea.sources.fetch(:selection_utilisateur) && feature[:geometry]['type'] == 'Polygon'
end.map do |feature|
feature[:geometry]['coordinates'][0].map { |(lng, lat)| { 'lng' => lng, 'lat' => lat } }
end
if coordinates.present?
cadastres = ApiCartoService.generate_cadastre(coordinates)
{
type: 'FeatureCollection',
features: cadastres.map do |cadastre|
{
type: 'Feature',
geometry: cadastre.delete(:geometry),
properties: cadastre.merge(source: GeoArea.sources.fetch(:cadastre))
}
end
}
else
{
type: 'FeatureCollection',
features: []
}
end
end
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end