# -*- coding: utf-8 -*-
# This file is part of the cashbook-module from m-ds for Tryton.
# The COPYRIGHT file at the top level of this repository contains the
# full copyright notices and license terms.


from trytond.model import ModelView, ModelSQL, Workflow, fields, Check
from trytond.pool import Pool
from trytond.pyson import Eval, If
from .line import sel_linetype, sel_bookingtype, STATES, DEPENDS
from .book import sel_state_book


class SplitLine(ModelSQL, ModelView):
    'Split booking line'
    __name__ = 'cashbook.split'

    line = fields.Many2One(string='Line', required=True,
        select=True, ondelete='CASCADE', model_name='cashbook.line',
        readonly=True)
    description = fields.Text(string='Description',
        states=STATES, depends=DEPENDS)
    category = fields.Many2One(string='Category',
        model_name='cashbook.category', ondelete='RESTRICT',
        states=STATES, depends=DEPENDS+['bookingtype'],
        required=True,
        domain=[
            If(
                Eval('bookingtype', '').in_(['in', 'mvin']),
                ('cattype', '=', 'in'),
                ('cattype', '=', 'out'),
            )])
    amount = fields.Numeric(string='Amount', digits=(16, Eval('currency_digits', 2)),
        required=True, states=STATES, depends=DEPENDS+['currency_digits'])

    currency = fields.Function(fields.Many2One(model_name='currency.currency',
        string="Currency"), 'on_change_with_currency')
    currency_digits = fields.Function(fields.Integer(string='Currency Digits'),
            'on_change_with_currency_digits')
    bookingtype = fields.Function(fields.Selection(string='Type', readonly=True,
        selection=sel_bookingtype), 'on_change_with_bookingtype')
    state = fields.Function(fields.Selection(string='State', readonly=True,
        selection=sel_linetype), 'on_change_with_state')
    state_cashbook = fields.Function(fields.Selection(string='State of Cashbook',
        readonly=True, states={'invisible': True}, selection=sel_state_book),
        'on_change_with_state_cashbook', searcher='search_state_cashbook')

    @fields.depends('line', '_parent_line.state')
    def on_change_with_state(self, name=None):
        """ get state
        """
        if self.line:
            return self.line.state

    @fields.depends('line', '_parent_line.cashbook')
    def on_change_with_state_cashbook(self, name=None):
        """ get state of cashbook
        """
        if self.line:
            return self.line.cashbook.state

    @fields.depends('line', '_parent_line.bookingtype')
    def on_change_with_bookingtype(self, name=None):
        """ get type
        """
        if self.line:
            return self.line.bookingtype

    @fields.depends('line', '_parent_line.cashbook')
    def on_change_with_currency(self, name=None):
        """ currency of cashbook
        """
        if self.line:
            return self.line.cashbook.currency.id

    @fields.depends('line', '_parent_line.cashbook')
    def on_change_with_currency_digits(self, name=None):
        """ currency-digits of cashbook
        """
        if self.line:
            return self.line.cashbook.currency.digits
        else:
            return 2

# end SplitLine