# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond import backend
from trytond.i18n import gettext
from trytond.model import ModelView, ModelSQL, ModelSingleton, fields
from trytond.model import MultiValueMixin, ValueMixin
from trytond.model.exceptions import AccessError
from trytond.pool import Pool
from trytond.tools.multivalue import migrate_property
from trytond.pyson import Id

from .party import IDENTIFIER_TYPES

party_sequence = fields.Many2One('ir.sequence', 'Party Sequence',
    domain=[
        ('sequence_type', '=', Id('party', 'sequence_type_party')),
        ],
    help="Used to generate the party code.")
party_lang = fields.Many2One("ir.lang", 'Party Language',
    help="The default language for new parties.")


class Configuration(ModelSingleton, ModelSQL, ModelView, MultiValueMixin):
    'Party Configuration'
    __name__ = 'party.configuration'

    party_sequence = fields.MultiValue(party_sequence)
    party_lang = fields.MultiValue(party_lang)
    identifier_types = fields.MultiSelection(
        IDENTIFIER_TYPES, "Identifier Types",
        help="Defines which identifier types are available.\n"
        "Leave empty for all of them.")

    @classmethod
    def default_party_sequence(cls, **pattern):
        pool = Pool()
        ModelData = pool.get('ir.model.data')
        try:
            return ModelData.get_id('party', 'sequence_party')
        except KeyError:
            return None

    def get_identifier_types(self):
        selection = self.fields_get(
            ['identifier_types'])['identifier_types']['selection']
        if self.identifier_types:
            selection = [
                (k, v) for k, v in selection if k in self.identifier_types]
        return selection

    @classmethod
    def create(cls, vlist):
        records = super().create(vlist)
        ModelView._fields_view_get_cache.clear()
        return records

    @classmethod
    def write(cls, *args):
        super().write(*args)
        ModelView._fields_view_get_cache.clear()

    @classmethod
    def delete(cls, records):
        super().delete(records)
        ModelView._fields_view_get_cache.clear()

    @classmethod
    def validate(cls, records):
        super().validate(records)
        cls(1).check_identifier_types()

    def check_identifier_types(self):
        pool = Pool()
        Identifier = pool.get('party.identifier')
        if self.identifier_types:
            identifier_types = [None, ''] + list(self.identifier_types)
            identifiers = Identifier.search([
                    ('type', 'not in', identifier_types),
                    ], limit=1, order=[])
            if identifiers:
                identifier, = identifiers
                selection = self.fields_get(
                    ['identifier_types'])['identifier_types']['selection']
                selection = dict(selection)
                raise AccessError(gettext(
                        'party.msg_identifier_type_remove',
                        type=selection.get(identifier.type, identifier.type),
                        identifier=identifier.rec_name,
                        ))


class _ConfigurationValue(ModelSQL):

    _configuration_value_field = None

    @classmethod
    def __register__(cls, module_name):
        exist = backend.TableHandler.table_exist(cls._table)

        super(_ConfigurationValue, cls).__register__(module_name)

        if not exist:
            cls._migrate_property([], [], [])

    @classmethod
    def _migrate_property(cls, field_names, value_names, fields):
        field_names.append(cls._configuration_value_field)
        value_names.append(cls._configuration_value_field)
        migrate_property(
            'party.configuration', field_names, cls, value_names,
            fields=fields)


class ConfigurationSequence(_ConfigurationValue, ModelSQL, ValueMixin):
    'Party Configuration Sequence'
    __name__ = 'party.configuration.party_sequence'
    party_sequence = party_sequence
    _configuration_value_field = 'party_sequence'

    @classmethod
    def check_xml_record(cls, records, values):
        return True


class ConfigurationLang(_ConfigurationValue, ModelSQL, ValueMixin):
    'Party Configuration Lang'
    __name__ = 'party.configuration.party_lang'
    party_lang = party_lang
    _configuration_value_field = 'party_lang'