# -*- 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, fields
from trytond.pyson import PYSONEncoder
from trytond.wizard import Wizard, StateView, StateTransition, StateAction, Button
from trytond.i18n import gettext
from trytond.pool import Pool
from trytond.pyson import Eval
from trytond.transaction import Transaction


class OpenCashBookStart(ModelView):
    'Open Cashbook'
    __name__ = 'cashbook.open_lines.start'

    cashbook = fields.Many2One(string='Cashbook', model_name='cashbook.book',
        required=True)
    checked = fields.Boolean(string='Checked', help="Show cashbook lines in Checked-state.")
    done = fields.Boolean(string='Done', help="Show cashbook lines in Done-state")
    date_from = fields.Date(string='Start Date')
    date_to = fields.Date(string='End Date')

    @classmethod
    def default_checked(cls):
        return True

    @classmethod
    def default_done(cls):
        return False

# end OpenCashBookStart


class OpenCashBook(Wizard):
    'Open Cashbook'
    __name__ = 'cashbook.open_lines'

    start_state = 'check'
    check = StateTransition()
    askuser = StateView('cashbook.open_lines.start',
        'cashbook.open_lines_view_form', [
            Button('Cancel', 'end', 'tryton-cancel'),
            Button('Open', 'open_', 'tryton-ok', default=True),
            ])
    open_ = StateAction('cashbook.act_line_view')

    def transition_check(self):
        """ dont ask and open cashbook if user has 1x only
        """
        Book = Pool().get('cashbook.book')

        with Transaction().set_context({
            '_check_access': True,
            }):
            books = Book.search([])
            if len(books) == 1:
                return 'open_'
        return 'askuser'

    def default_askuser(self, fields):
        """ setup form
        """
        Configuration = Pool().get('cashbook.configuration')

        cfg1 = Configuration.get_singleton()
        result = {
            'date_from': getattr(cfg1, 'date_from', None),
            'date_to': getattr(cfg1, 'date_to', None),
            'checked': getattr(cfg1, 'checked', True),
            'done': getattr(cfg1, 'done', False),
            }
        return result

    def do_open_(self, action):
        """ open view, use data from dialog
        """
        pool = Pool()
        Book = pool.get('cashbook.book')
        Configuration = pool.get('cashbook.configuration')

        cfg1 = Configuration.get_singleton()
        if cfg1 is None:
            cfg1 = Configuration()
            cfg1.save()

        book = getattr(self.askuser, 'cashbook', None)
        if book is None:
            with Transaction().set_context({
                '_check_access': True,
                }):
                books = Book.search([])
                if len(books) > 0:
                    book = books[0]

        date_from = getattr(self.askuser, 'date_from', None)
        date_to = getattr(self.askuser, 'date_to', None)
        checked = getattr(self.askuser, 'checked', True)
        done = getattr(self.askuser, 'done', False)

        # save settings
        cfg1.date_from = date_from
        cfg1.date_to = date_to
        cfg1.checked = checked
        cfg1.done = done
        cfg1.save()

        action['pyson_context'] = PYSONEncoder().encode({
            'cashbook': getattr(book, 'id', None),
            'date_from': date_from,
            'date_to': date_to,
            'checked': checked,
            'done': done,
            })
        action['name'] = '%(name)s: %(cashbook)s' % {
                'name': gettext('cashbook.msg_name_cashbook'),
                'cashbook': getattr(book, 'rec_name', '-/-'),
            }
        return action, {}

    def transition_open_(self):
        return 'end'

# end OpenCashBook