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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2017 Étienne Loks <etienne.loks_AT_peacefrogsDOTnet>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# See the file COPYING for details.
import csv
import sys
from django.core.management.base import BaseCommand
from django.contrib.gis.geos import GEOSGeometry, Point
from ishtar_common.models import Town
class Command(BaseCommand):
help = 'Import GEOFLA csv'
def add_arguments(self, parser):
parser.add_argument('csv_file')
parser.add_argument(
'--year', type=int, default=2014, dest='year',
help='Default year to affect to the town')
def handle(self, *args, **options):
csv_file = options['csv_file']
default_year = options['year']
sys.stdout.write('* using year {} as a default\n'.format(default_year))
sys.stdout.write('* Opening file {}\n'.format(csv_file))
nb_created, nb_changed = 0, 0
with open(csv_file, 'rb') as csvfile:
reader = csv.DictReader(csvfile)
for idx, row in enumerate(reader):
sys.stdout.write('Processing town %d.\r' % (idx + 1))
sys.stdout.flush()
num_insee = row['INSEE_COM']
if len(num_insee) < 5:
num_insee = '0' + num_insee
q = Town.objects.filter(numero_insee=num_insee)
changed, created = False, False
if q.count():
if q.filter(year=default_year).count():
town = q.filter(year=default_year).all()[0]
else:
town = q.order_by('-year').all()[0]
else:
changed = True
created = True
nb_created += 1
town = Town(name=row['NOM_COM'],
numero_insee=num_insee)
if not town.limit:
changed = True
geom = row['wkt_geom'].upper()
if 'MULTI' not in geom:
geom = geom.replace('POLYGON', 'MULTIPOLYGON(') + ')'
town.limit = GEOSGeometry(geom, srid=2154)
if not town.center:
changed = True
town.center = Point(float(row['X_CENTROID']),
float(row['Y_CENTROID']), srid=2154)
if not town.year and default_year:
changed = True
town.year = default_year
if not town.surface:
changed = True
town.surface = row['SUPERFICIE']
if changed:
if not created:
nb_changed += 1
town.save()
sys.stdout.write('\n* {} town created'.format(nb_created))
sys.stdout.write('\n* {} town changed\n'.format(nb_changed))
sys.stdout.flush()
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