# -*- coding: utf-8 -*-
##############################################################################
#
#    Cybrosys Technologies Pvt. Ltd.
#    Copyright (C) 2017-TODAY Cybrosys Technologies(<http://www.cybrosys.com>).
#    Author: Jesni Banu(<http://www.cybrosys.com>)
#    you can modify it under the terms of the GNU LESSER
#    GENERAL PUBLIC LICENSE (AGPL v3), Version 3.

#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU LESSER GENERAL PUBLIC LICENSE (AGPL v3) for more details.
#
#    You should have received a copy of the GNU LESSER GENERAL PUBLIC LICENSE
#    GENERAL PUBLIC LICENSE (AGPL v3) along with this program.
#    If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
from datetime import datetime
from odoo import models, fields, api


class ProjectTaskTimeSheet(models.Model):
    _inherit = 'account.analytic.line'

    date_start = fields.Datetime(string='Start Date')
    date_end = fields.Datetime(string='End Date', readonly=1)
    timer_duration = fields.Float(invisible=1, string='Time Duration (Minutes)=')


class ProjectTaskTimer(models.Model):
    _inherit = 'project.task'

    task_timer = fields.Boolean(string='Timer', default=False)
    is_user_working = fields.Boolean(
        'Is Current User Working', compute='_compute_is_user_working',
        help="Technical field indicating whether the current user is working. ")
    duration = fields.Float(
        'Real Duration', compute='_compute_duration', store=True)

    def _compute_duration(self):
        self

    def _compute_is_user_working(self):
        """ Checks whether the current user is working """
        for order in self:
            if order.timesheet_ids.filtered(lambda x: (x.user_id.id == self.env.user.id) and (not x.date_end)):
                order.is_user_working = True
            else:
                order.is_user_working = False

    @api.model
    @api.constrains('task_timer')
    def toggle_start(self):
        if self.task_timer is True:
            self.write({'is_user_working': True})
            time_line = self.env['account.analytic.line']
            for time_sheet in self:
                time_line.create({
                    'name': self.env.user.name + ': ' + time_sheet.name,
                    'task_id': time_sheet.id,
                    'user_id': self.env.user.id,
                    'project_id': time_sheet.project_id.id,
                    'date_start': datetime.now(),
                })
        else:
            self.write({'is_user_working': False})
            time_line_obj = self.env['account.analytic.line']
            domain = [('task_id', 'in', self.ids), ('date_end', '=', False)]
            for time_line in time_line_obj.search(domain):
                if time_line.date_start:
                    time_line.write({'date_end': fields.Datetime.now()})
                    diff = fields.Datetime.from_string(time_line.date_end) - fields.Datetime.from_string(time_line.date_start)
                    time_line.timer_duration = round(diff.total_seconds() / 60.0, 2)
                    time_line.unit_amount = round(diff.total_seconds() / (60.0 * 60.0), 2)

    def get_working_duration(self):
        """Get the additional duration for 'open times'
        i.e. productivity lines with no date_end."""
        self.ensure_one()
        duration = 0
        for time in \
                self.timesheet_ids.filtered(lambda time: not time.date_end):
            if type(time.date_start) != datetime:
                time.date_start = datetime.now()
                duration = 0
            else:
                duration += \
                    (datetime.now() - time.date_start).total_seconds() / 60
        return duration