# -*- 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.transaction import Transaction
from trytond.pool import Pool
from trytond.model import ModelView, fields
from trytond.wizard import Wizard, StateTransition, StateView, Button
from trytond.transaction import Transaction
from trytond.i18n import gettext


class ImportQifWizardStart(ModelView):
    'Import QIF-File'
    __name__ = 'cashbook_dataexchange.qif_imp_wiz.start'

    company = fields.Many2One(model_name='company.company',
        string="Company", required=True,
        states={'invisible': True})
    file_ = fields.Binary(string="QIF-File", required=True,
        help='Quicken Interchange Format')

    @classmethod
    def default_company(cls):
        return Transaction().context.get('company')

# end ImportQifWizardStart


class ImportQifWizardInfo(ModelView):
    'Import QIF-File'
    __name__ = 'cashbook_dataexchange.qif_imp_wiz.info'

    company = fields.Many2One(model_name='company.company',
        string="Company", required=True,
        states={'invisible': True})
    info = fields.Text(string='Information', readonly=True)

# end ImportQifWizardInfo


class ImportQifWizard(Wizard):
    'Import QIF-File'
    __name__ = 'cashbook_dataexchange.qif_imp_wiz'

    start_state = 'start'
    start = StateView(model_name='cashbook_dataexchange.qif_imp_wiz.start', \
        view='cashbook_dataexchange.qif_imp_wiz_start_form', \
        buttons=[
            Button(string='Cancel', state='end', icon='tryton-cancel'),
            Button(string='Read File', state='readf', icon='tryton-forward', default=True),
            ])
    showinfo = StateView(model_name='cashbook_dataexchange.qif_imp_wiz.info', \
        view='cashbook_dataexchange.qif_imp_wiz_info_form', \
        buttons=[
            Button(string='Cancel', state='end', icon='tryton-cancel'),
            Button(string='Import Categories', state='importf', icon='tryton-import', default=True),
            ])

    readf = StateTransition()
    importf = StateTransition()

    def default_showinfo(self, fields):
        """ show import-info
        """
        values = {
            'company': self.start.company.id,
            'info': getattr(self.showinfo, 'info', None),
            }
        return values

    def transition_readf(self):
        """ read file, show number of objects
        """
        pool = Pool()
        QitTool = pool.get('cashbook_dataexchange.qiftool')

        model = Transaction().context.get('active_model', '')
        file_content = None
        if isinstance(self.start.file_, bytes):
            file_content = self.start.file_.decode('utf8')

        if model == 'cashbook.category':
            def get_catlist(catlist, parent_name=None):
                """ generate list of categories
                """
                names = []
                for name1 in catlist.keys():
                    name_lst = []
                    if parent_name:
                        name_lst.append(parent_name)
                    name_lst.append(name1)
                    current_name = '/'.join(name_lst)
                    names.append(current_name)
                    names.extend(get_catlist(catlist[name1]['childs'], current_name))
                return names

            # read file content, extract categories
            qif_content = QitTool.split_by_type(file_content)
            if 'Cat' in qif_content.keys():
                categories = QitTool.qif_read_categories(qif_content['Cat'])
                self.showinfo.info = gettext(
                    'cashbook_dataexchange.msg_wiz_categories_found',
                    categories = '\n'.join(
                        [''] +
                        ['%s (in)' % x for x in get_catlist(categories['in'], None)]+
                        [''] +
                        ['%s (out)' % x for x in get_catlist(categories['out'], None)]
                        )
                    )
            else :
                self.showinfo.info = gettext('cashbook_dataexchange.msg_wiz_no_categories')

        return 'showinfo'

    def transition_importf(self):
        """ read file, show number of objects
        """
        pool = Pool()
        Category = pool.get('cashbook.category')

        model = Transaction().context.get('active_model', '')
        file_content = None
        if isinstance(self.start.file_, bytes):
            file_content = self.start.file_.decode('utf8')

        if model == 'cashbook.category':
            if file_content:
                records = Category.create_from_qif(file_content)

        return 'end'

# end ImportQifWizard