# coding: utf-8
# © 2015 David BEAL @ Akretion
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).

import collections
from openerp import models, fields, api


class ResourceCalendar(models.Model):
    _inherit = 'resource.calendar'

    name = fields.Char(compute='_compute_name', store=True)

    @api.multi
    @api.depends('attendance_ids')
    def _compute_name(self):
        for rec in self:
            if rec.attendance_ids:
                info = []
                for day in rec.attendance_ids:
                    selection = day._fields['dayofweek'].selection
                    string_day = self.map_day()[
                        selection[int(day.dayofweek)][1]]
                    info.append(
                        '%s %s/%s'
                        % (string_day, int(day.hour_from), int(day.hour_to)))
                rec.name = ', '.join(info) or '_'
            else:
                rec.name = '_'

    @api.model
    def map_day(self):
        'Override me to customize calendar name'
        return {'Monday': 'L', 'Tuesday': 'Ma', 'Wednesday': 'Me',
                'Thursday': 'J', 'Friday': 'V', 'Saturday': 'S',
                'Sunday': 'D'}

    @api.model
    def get_my_calendar_data(self):
        'Override me according to your opening hours'
        Params = collections.namedtuple(
            'Params', 'hour_from hour_to hour_from2 hour_to2 endday')
        return Params(
            endday=5,
            hour_from=8,
            hour_to=12,
            # put hour_to/from to False if you don't want use them
            hour_from2=13,
            hour_to2=17,
        )

    @api.model
    def _populate_attendance(self, day, hour_from, hour_to):
        return {
            'hour_from': hour_from,
            'hour_to': hour_to,
            'name': '.',
            'dayofweek': str(day),
        }

    @api.model
    def create(self, vals):
        if not vals.get('attendance_ids'):
            values = []
            params = self.get_my_calendar_data()
            for day in range(0, params.endday):
                mapping = self._populate_attendance(
                    day, params.hour_from, params.hour_to)
                values.append((0, 0, mapping))
                if params.hour_from2 and params.hour_to2:
                    mapping = self._populate_attendance(
                        day, params.hour_from2, params.hour_to2)
                    values.append((0, 0, mapping))
            vals['attendance_ids'] = values
        return super(ResourceCalendar, self).create(vals)