# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from datetime import date, timedelta

from odoo import _, api, fields, models
from odoo.exceptions import ValidationError


class AccountFinancialYearOp(models.TransientModel):
    _name = 'account.financial.year.op'
    _description = 'Opening Balance of Financial Year'

    company_id = fields.Many2one(comodel_name='res.company', required=True)
    opening_move_posted = fields.Boolean(string='Opening Move Posted', compute='_compute_opening_move_posted')
    opening_date = fields.Date(string='Opening Date', required=True, related='company_id.account_opening_date', help="Date from which the accounting is managed in Odoo. It is the date of the opening entry.", readonly=False)
    fiscalyear_last_day = fields.Integer(related="company_id.fiscalyear_last_day", required=True, readonly=False,
                                         help="The last day of the month will be used if the chosen day doesn't exist.")
    fiscalyear_last_month = fields.Selection(related="company_id.fiscalyear_last_month", readonly=False,
                                             required=True,
                                             help="The last day of the month will be used if the chosen day doesn't exist.")

    @api.depends('company_id.account_opening_move_id')
    def _compute_opening_move_posted(self):
        for record in self:
            record.opening_move_posted = record.company_id.opening_move_posted()

    @api.constrains('fiscalyear_last_day', 'fiscalyear_last_month')
    def _check_fiscalyear(self):
        # We try if the date exists in 2020, which is a leap year.
        # We do not define the constrain on res.company, since the recomputation of the related
        # fields is done one field at a time.
        for wiz in self:
            try:
                date(2020, int(wiz.fiscalyear_last_month), wiz.fiscalyear_last_day)
            except ValueError:
                raise ValidationError(
                    _('Incorrect fiscal year date: day is out of range for month. Month: %(month)s; Day: %(day)s',
                    month=wiz.fiscalyear_last_month, day=wiz.fiscalyear_last_day)
                )

    @api.model
    def _company_fields_to_update(self):
        return {'fiscalyear_last_day', 'fiscalyear_last_month', 'opening_date'}

    @api.model
    def _update_company(self, company_id, vals):
        # Amazing workaround: non-stored related fields on company are a BAD idea since the 3 fields
        # must follow the constraint '_check_fiscalyear_last_day'. The thing is, in case of related
        # fields, the inverse write is done one value at a time, and thus the constraint is verified
        # one value at a time... so it is likely to fail.
        company_fields_to_update = {k: k for k in self._company_fields_to_update()}
        company_fields_to_update['opening_date'] = 'account_opening_date'
        company_id.write({
            company_field: vals[wizard_field] for wizard_field, company_field in company_fields_to_update.items() if wizard_field in vals
        })
        opening_date = vals.get('opening_date', company_id.account_opening_date)
        opening_move = company_id.account_opening_move_id
        if opening_date and opening_move.state == 'draft':
            opening_move.write({
                'date': fields.Date.from_string(opening_date) - timedelta(days=1),
            })

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if 'company_id' in vals:
                company = self.env['res.company'].browse(vals['company_id'])
                self._update_company(company, vals)

                # we need to keep opening_date in vals since it's a required field otherwise the wizard fails to be created
                for key in self._company_fields_to_update() - {'opening_date'}:
                    vals.pop(key, None)

        return super().create(vals_list)

    def write(self, vals):
        for wiz in self:
            wiz._update_company(wiz.company_id, vals)

        for key in self._company_fields_to_update():
            vals.pop(key, None)

        return super().write(vals)

    def action_save_onboarding_fiscal_year(self):
        step_state = self.env['onboarding.onboarding.step'].with_company(self.company_id).action_validate_step('account.onboarding_onboarding_step_fiscal_year')
        # move the state to DONE to avoid an update in the web_read
        if step_state == 'JUST_DONE':
            self.env.ref('account.onboarding_onboarding_account_dashboard')._prepare_rendering_values()
        return {'type': 'ir.actions.client', 'tag': 'soft_reload'}


class AccountSetupBankManualConfig(models.TransientModel):
    _name = 'account.setup.bank.manual.config'
    _inherits = {'res.partner.bank': 'res_partner_bank_id'}
    _description = 'Bank setup manual config'
    _check_company_auto = True

    res_partner_bank_id = fields.Many2one(comodel_name='res.partner.bank', ondelete='cascade', required=True)
    new_journal_name = fields.Char(default=lambda self: self.linked_journal_id.name, inverse='set_linked_journal_id', required=True, help='Will be used to name the Journal related to this bank account')
    linked_journal_id = fields.Many2one(string="Journal",
        comodel_name='account.journal', inverse='set_linked_journal_id',
        compute="_compute_linked_journal_id",
        check_company=True,
    )
    bank_bic = fields.Char(related='bank_id.bic', readonly=False, string="Bic")
    num_journals_without_account_bank = fields.Integer(default=lambda self: self._number_unlinked_journal('bank'))
    num_journals_without_account_credit = fields.Integer(default=lambda self: self._number_unlinked_journal('credit'))
    company_id = fields.Many2one('res.company', required=True, compute='_compute_company_id')

    def _number_unlinked_journal(self, journal_type):
        return self.env['account.journal'].search_count([
            ('type', '=', journal_type),
            ('bank_account_id', '=', False),
            ('id', '!=', self.default_linked_journal_id(journal_type)),
        ])

    @api.onchange('acc_number')
    def _onchange_acc_number(self):
        for record in self:
            record.new_journal_name = record.acc_number

    @api.model_create_multi
    def create(self, vals_list):
        """ This wizard is only used to setup an account for the current active
        company, so we always inject the corresponding partner when creating
        the model.
        """
        for vals in vals_list:
            vals['partner_id'] = self.env.company.partner_id.id
            vals['new_journal_name'] = vals['acc_number']

            # If no bank has been selected, but we have a bic, we are using it to find or create the bank
            if not vals.get('bank_id') and vals.get('bank_bic'):
                vals['bank_id'] = self.env['res.bank'].search([('bic', '=', vals['bank_bic'])], limit=1).id \
                                  or self.env['res.bank'].create({'name': vals['bank_bic'], 'bic': vals['bank_bic']}).id

        return super().create(vals_list)

    @api.onchange('linked_journal_id')
    def _onchange_new_journal_related_data(self):
        for record in self:
            if record.linked_journal_id:
                record.new_journal_name = record.linked_journal_id.name

    @api.depends('journal_id')  # Despite its name, journal_id is actually a One2many field
    def _compute_linked_journal_id(self):
        journal_type = self.env.context.get('journal_type', 'bank')
        for record in self:
            record.linked_journal_id = record.journal_id and record.journal_id[0] or record.default_linked_journal_id(journal_type)

    def default_linked_journal_id(self, journal_type):
        journals_with_moves = self.env['account.move'].search_fetch(
            [
                ('journal_id', '!=', False),
                ('journal_id.type', '=', journal_type),
            ],
            ['journal_id'],
        ).journal_id

        return self.env['account.journal'].search(
            [
                ('type', '=', journal_type),
                ('bank_account_id', '=', False),
                ('id', 'not in', journals_with_moves.ids),
            ],
            limit=1,
        ).id

    def set_linked_journal_id(self):
        """ Called when saving the wizard.
        """
        journal_type = self.env.context.get('journal_type', 'bank')
        for record in self:
            selected_journal = record.linked_journal_id
            if not selected_journal:
                new_journal_code = self.env['account.journal']._get_next_journal_default_code(journal_type, self.env.company)
                company = self.env.company
                record.linked_journal_id = self.env['account.journal'].create({
                    'name': record.new_journal_name,
                    'code': new_journal_code,
                    'type': journal_type,
                    'company_id': company.id,
                    'bank_account_id': record.res_partner_bank_id.id,
                    'bank_statements_source': 'undefined',
                })
            else:
                selected_journal.bank_account_id = record.res_partner_bank_id.id
                selected_journal.name = record.new_journal_name

    def validate(self):
        """Called by the validation button of this wizard. Serves as an
        extension hook in account_bank_statement_import.
        """
        return {'type': 'ir.actions.client', 'tag': 'soft_reload'}

    def _compute_company_id(self):
        for wizard in self:
            if not wizard.company_id:
                wizard.company_id = self.env.company