from odoo import models, fields, api
from odoo.exceptions import UserError, ValidationError
from psycopg2 import sql, DatabaseError

from werkzeug import utils

class opendons_operation(models.Model):
    _name = 'opendons.operation'
    _description = 'opération marketing : mailing, emailing evenements'
    _inherit = ['mail.thread']

    code=fields.Char(string='Code',required=True, translate=True,track_visibility='always')
    name=fields.Char(string='Name',required=True, translate=True,track_visibility='always')
    begin_date=fields.Date(string='Date begin',required=True, translate=True,track_visibility='always')
    end_date=fields.Date(string='Date end',required=True, translate=True,track_visibility='always')
    chanel=fields.Selection([
        ('mail', 'Mailing'),
        ('email', 'E-mailing'),
        ('event', 'Event')],
        string='Chanel',required=True, translate=True,track_visibility='always')

    user_id = fields.Many2one('res.users', string='Author', default=lambda self: self.env.uid)
    cost = fields.Monetary(
        string='Cost',
        currency_field='currency_id')

    @api.model
    def _default_currency(self):
        company = self.env['res.company']._company_default_get(
            'opendons.operation')
        return company.currency_id

    currency_id = fields.Many2one(
        'res.currency',
        string='Currency',
        required=True,
        track_visibility='onchange',
        ondelete='restrict',
        default=_default_currency
    )
    _sql_constraints = [
        ('name_uniq', 'unique (name)', "Name already exists !"),
         ('code_uniq', 'unique (code)', "Code already exists !"),
    ]

    number_of_sending = fields.Integer(
        compute='_compute_number_of_sending',
        string="# of sending",
        readonly=True
    )
    segment_ids = fields.One2many(
        'opendons.segment',
        'operation_id',
        string='Segments',
        required=True,
        track_visibility='onchange')


class opendons_segment(models.Model):
    _name = 'opendons.segment'
    _description = 'operation marketing segment : a segment is a part of contacts selected for an operation '
    _inherit = ['mail.thread']
    code=fields.Char(string='Code',required=True, translate=True,track_visibility='always')
    name=fields.Char(string='Name',required=True, translate=True,track_visibility='always')
    cost = fields.Monetary(
        string='Cost',
        currency_field='currency_id')

    @api.model
    def _default_currency(self):
        company = self.env['res.company']._company_default_get(
            'opendons.segment')
        return company.currency_id

    currency_id = fields.Many2one(
        'res.currency',
        string='Currency',
        required=True,
        track_visibility='onchange',
        ondelete='restrict',
        default=_default_currency
    )

    operation_id = fields.Many2one(
        'opendons.operation','Operation',
        ondelete='cascade',
        track_visibility='always')