# -*- coding: utf-8 -*-
from datetime import datetime

from openerp import api, fields, models


class account_invoice(models.Model):
    _inherit = 'account.invoice'

    subscription_request = fields.Many2one('subscription.request',
                                           string='Subscription request')
    release_capital_request = fields.Boolean(
                                        string='Release of capital request')

    @api.model
    def _prepare_refund(self, invoice, date_invoice=None, date=None,
                        description=None, journal_id=None):
        values = super(account_invoice, self)._prepare_refund(
                                        invoice, date_invoice, date, 
                                        description, journal_id)
        values['release_capital_request'] = self.release_capital_request

        return values

    def set_cooperator_effective(self, effective_date):
        # flag the partner as a effective member
        obj_sequence = self.env['ir.sequence']

        mail_template_name = 'Payment Received Confirmation - Send By Email'

        # if not yet cooperator we generate a cooperator number
        if self.partner_id.member is False and self.partner_id.old_member is False:
            sequence_id = obj_sequence.search([('name', '=', 'Subscription Register')])[0]
            sub_reg_num = sequence_id.next_by_id()
            self.partner_id.write({'member': True, 'old_member': False,
                                   'cooperator_register_number': int(sub_reg_num)})
        elif self.partner_id.old_member:
            self.partner_id.write({'member': True, 'old_member': False})
        else:
            mail_template_name = 'Share Increase - Payment Received Confirmation - Send By Email'
        sequence_operation = obj_sequence.search([('name', '=', 'Register Operation')])[0]
        sub_reg_operation = sequence_operation.next_by_id()

        for line in self.invoice_line_ids:
            sub_reg = self.env['subscription.register'].create(
                               {'name': sub_reg_operation,
                                'register_number_operation': int(sub_reg_operation),
                                'partner_id': self.partner_id.id,
                                'quantity': line.quantity,
                                'share_product_id': line.product_id.id,
                                'share_unit_price': line.price_unit,
                                'date': effective_date,
                                'type': 'subscription'})
            self.env['share.line'].create({'share_number': line.quantity,
                                           'share_product_id': line.product_id.id,
                                           'partner_id': self.partner_id.id,
                                           'share_unit_price': line.price_unit,
                                           'effective_date': effective_date})

        email_template_obj = self.env['mail.template']
        certificat_email_template = email_template_obj.search([('name', '=', mail_template_name)])[0]
        # we send the email with the certificat in attachment
        certificat_email_template.send_mail(self.partner_id.id, False)

        return True

    def post_process_confirm_paid(self, effective_date):
        self.set_cooperator_effective(effective_date)

        return True

    @api.multi
    def confirm_paid(self):
        for invoice in self:
            super(account_invoice, invoice).confirm_paid()
            # we check if there is an open refund for this invoice. in this case we
            # don't run the process_subscription function as the invoice has been 
            # reconciled with a refund and not a payment.
            refund = self.search([('type', '=', 'out_refund'), ('origin', '=', invoice.number)]).filtered(lambda record: record.state == 'open')

            if invoice.partner_id.cooperator and invoice.release_capital_request \
                and invoice.type == 'out_invoice' and not refund:
                # take the effective date from the payment. 
                # by default the confirmation date is the payment date
                effective_date = datetime.now().strftime("%d/%m/%Y")

                if invoice.payment_move_line_ids:
                    move_line = invoice.payment_move_line_ids[0]
                    effective_date = move_line.date

                invoice.subscription_request.state = 'paid'
                invoice.post_process_confirm_paid(effective_date)
            # if there is a open refund we mark the subscription as cancelled
            elif invoice.partner_id.cooperator and invoice.release_capital_request \
                and invoice.type == 'out_invoice' and refund:
                invoice.subscription_request.state = 'cancelled'
        return True