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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2013-2014  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 re, copy
import unicodecsv

from django.conf import settings
from django.template.defaultfilters import slugify

from ishtar_common.data_importer import *
from ishtar_common.models import Town, Person, OrganizationType
from ishtar_common.unicode_csv import unicode_csv_reader

from archaeological_files import models

RE_FILTER_CEDEX = re.compile("(.*) *(?: *CEDEX|cedex|Cedex|Cédex|cédex *\d*)")

class TownFormater(Formater):
    def __init__(self, town_full_dct={}, town_dct={}):
        self._town_full_dct = town_full_dct
        self._town_dct = town_dct
        self._initialized = False if not self._town_full_dct else True

    def town_dct_init(self):
        for town in Town.objects.all():
            key = (slugify(town.name.strip()), town.numero_insee[:2])
            if key in self._town_full_dct:
                print("Danger! %s is ambiguous with another town on the same "\
                      "department."% town.name)
                continue
            self._town_full_dct[key] = town
            key = slugify(town.name.strip())
            if key in self._town_dct:
                print("Warning %s is ambiguous with no department provided" %\
                      town.name)
                continue
            self._town_dct[key] = town
            self._initialized = True

    def format(self, value, extra=None):
        if not self._initialized:
            self.town_dct_init()
        m = RE_FILTER_CEDEX.match(value)
        if m:
            value = m.groups()[0]
        if not value:
            return None
        if extra:
            key = (slugify(value), extra)
            if key in self._town_full_dct:
                return self._town_full_dct[key]
        key = slugify(value)
        if key in self._town_dct:
            return self._town_dct[key]

#RE_ADD_CD_POSTAL_TOWN = re.compile("(.*)[, ](\d{5}) (.*?) *(?: "\
#                                   "*CEDEX|cedex|Cedex *\d*)*")

RE_ADD_CD_POSTAL_TOWN = re.compile("(.*)?[, ]+(\d{5})[, ]+(.+)")

RE_ADD_CD_POSTAL_TOWN = re.compile("(.*)?[, ]*(\d{2} *\d{3})[, ]*(.+)")

RE_CD_POSTAL_FILTER = re.compile("(\d*) (\d*)")

class FileImporterSraPdL(Importer):
    LINE_FORMAT = []
    OBJECT_CLS = models.File
    DEFAULTS = {('responsible_town_planning_service', 'attached_to'):{
                    'organization_type':OrganizationType.objects.get(
                                             txt_idx="planning_service")},
                ('general_contractor', 'attached_to'):{
                    'organization_type':OrganizationType.objects.get(
                                             txt_idx="general_contractor")},
                tuple():{
                    'file_type': models.FileType.objects.get(
                                             txt_idx='undefined'),}
               }

    def _init_line_format(self):
        tf = TownFormater()
        tf.town_dct_init()
        self.line_format = [
        ImportFormater('responsible_town_planning_service__name',
                       UnicodeFormater(300),
                       comment=u"Service instructeur - nom",
                       required=False),
        ImportFormater(['address', 'postal_code', 'towns'],
                    [UnicodeFormater(500, clean=True),
                     UnicodeFormater(5, re_filter=RE_CD_POSTAL_FILTER),
                     tf],
                    regexp=RE_ADD_CD_POSTAL_TOWN,
                    regexp_formater_args=[[0], [1], [2, 1]], required=False,
                    comment="Dossier - adresse"),
        ImportFormater('general_contractor__name',
                       UnicodeFormater(200),
                       comment=u"Aménageur - nom",
                       duplicate_field='general_contractor__attached_to__name',
                       required=False),
        ImportFormater(['general_contractor__attached_to__address',
                        'general_contractor__attached_to__postal_code',
                        'general_contractor__attached_to__town'],
                    [UnicodeFormater(500, clean=True),
                     UnicodeFormater(5, re_filter=RE_CD_POSTAL_FILTER),
                     TownFormater(town_full_dct=tf._town_full_dct,
                                  town_dct=tf._town_dct)],
                    regexp=RE_ADD_CD_POSTAL_TOWN,
                    regexp_formater_args=[[0], [1], [2, 1]], required=False,
                    comment="Aménageur - adresse"),
        ImportFormater("general_contractor__title",
                        StrChoiceFormater(Person.TYPE, cli=True),
                        required=False),
        ]

    def __init__(self, *args, **kwargs):
        super(FileImporterSraPdL, self).__init__(*args, **kwargs)
        self._init_line_format()
        if tuple() not in self._defaults:
            self._defaults[tuple()] = {}
        self._defaults[tuple()]['history_modifier'] = self.history_modifier

def test(filename):
    importer = FileImporterSraPdL(skip_first_line=True)
    with open(filename) as csv_file:
        encodings = [settings.ENCODING, settings.ALT_ENCODING, 'utf-8']
        for encoding in encodings:
            try:
                importer.importation([line for line in
                        unicodecsv.reader(csv_file, encoding='utf-8')])
                #importer.importation(unicode_csv_reader(
                #        [line.decode(encoding)
                #         for line in csv_file.readlines()])
                print importer.get_csv_errors()
                break
            except ImporterError, e:
                print(unicode(e))
                if e.type == ImporterError.HEADER and encoding != encodings[-1]:
                    csv_file.seek(0)
                    continue
            except UnicodeDecodeError:
                if encoding != encodings[-1]:
                    csv_file.seek(0)
                    continue