from trytond.model import ModelSQL, ModelView, fields
from trytond.pool import Pool, PoolMeta
from trytond.pyson import Eval

__all__ = [
    'Configuration',
    'ConfigurationDefaultAccount',
    'PhysicalTradeIFRS',
    ]
__metaclass__ = PoolMeta


class Configuration(metaclass=PoolMeta):
    __name__ = 'account.configuration'

    default_sale_padding_account = fields.MultiValue(fields.Many2One(
            'account.account', "Default Sale Padding",
            domain=[
                ('closed', '!=', True),
                ('type.revenue', '=', True),
                ('company', '=', Eval('context', {}).get('company', -1)),
                ]))
    default_accrual_padding_account = fields.MultiValue(fields.Many2One(
            'account.account', "Default Accrual Padding",
            domain=[
                ('closed', '!=', True),
                ('type.statement', '=', 'balance'),
                ('company', '=', Eval('context', {}).get('company', -1)),
                ]))

    @classmethod
    def multivalue_model(cls, field):
        pool = Pool()
        if field in {
                'default_sale_padding_account',
                'default_accrual_padding_account',
                }:
            return pool.get('account.configuration.default_account')
        return super().multivalue_model(field)


class ConfigurationDefaultAccount(metaclass=PoolMeta):
    __name__ = 'account.configuration.default_account'

    default_sale_padding_account = fields.Many2One(
        'account.account', "Default Sale Padding",
        domain=[
            ('closed', '!=', True),
            ('type.revenue', '=', True),
            ('company', '=', Eval('company', -1)),
            ])
    default_accrual_padding_account = fields.Many2One(
        'account.account', "Default Accrual Padding",
        domain=[
            ('closed', '!=', True),
            ('type.statement', '=', 'balance'),
            ('company', '=', Eval('company', -1)),
            ])


class PhysicalTradeIFRS(ModelSQL, ModelView):
    'Physical Trade - IFRS Adjustment'
    __name__ = 'account.physical_trade_ifrs'

    date = fields.Date('Date', required=True)
    comment = fields.Text('Comment', required=True)
    currency = fields.Many2One('currency.currency', 'Currency', required=True)
    currency_digits = fields.Function(
        fields.Integer('Currency Digits'),
        'on_change_with_currency_digits')
    amount = fields.Numeric(
        'Amount',
        digits=(16, Eval('currency_digits', 2)),
        depends=['currency_digits'],
        required=True)

    @fields.depends('currency')
    def on_change_with_currency_digits(self, name=None):
        if self.currency:
            return self.currency.digits
        return 2