# -*- coding: utf-8 -*-
from datetime import datetime
from odoo import api, fields, models, _
from odoo.exceptions import ValidationError
from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT


class MassMailingScheduleDate(models.TransientModel):
    _name = 'mass.mailing.schedule.date'
    _description = 'Mass Mailing Scheduling'

    schedule_date = fields.Datetime(string='Schedule in the Future')
    mass_mailing_id = fields.Many2one('mail.mass_mailing', required=True)

    @api.constrains('schedule_date')
    def _check_schedule_date(self):
        for scheduler in self:
            if scheduler.schedule_date < fields.Datetime.now():
                raise ValidationError(_('Please select a date equal/or greater than the current date.'))

    def set_schedule_date(self):
        self.ensure_one()
        mailing = self.mass_mailing_id
        if mailing.mailchimp_template_id:
            schedule_date = datetime.strptime(self.schedule_date, DEFAULT_SERVER_DATETIME_FORMAT)
            mailing.schedule_mailchimp_champaign(schedule_date)
        self.mass_mailing_id.write({'schedule_date': self.schedule_date, 'state': 'in_queue'})