# -*- coding: utf-8 -*-

from odoo import models, fields, api
from odoo.exceptions import ValidationError


class ContactCommunication(models.Model):
    _name = 'dsrpt.contact.communication'
    _description = 'Contact Communication'
    _order = 'is_preferred desc, id'

    contact_id = fields.Many2one(
        'dsrpt.contact', 
        string='Contact', 
        required=True, 
        ondelete='cascade'
    )
    communication_type_id = fields.Many2one(
        'dsrpt.communication.type', 
        string='Type', 
        required=True
    )
    value = fields.Char(string='Value', required=True)
    is_preferred = fields.Boolean(string='Preferred', default=False)
    
    @api.constrains('is_preferred')
    def _check_single_preferred(self):
        """Ensure only one preferred communication per contact"""
        for record in self:
            if record.is_preferred:
                # Проверяем есть ли другие preferred для этого контакта
                domain = [
                    ('contact_id', '=', record.contact_id.id),
                    ('is_preferred', '=', True),
                    ('id', '!=', record.id)
                ]
                if self.search_count(domain) > 0:
                    raise ValidationError(
                        'Only one communication method can be marked as preferred per contact.'
                    )
    
    @api.model
    def create(self, vals):
        # Если это первый способ связи для контакта, делаем его preferred
        if 'contact_id' in vals and not vals.get('is_preferred'):
            existing = self.search_count([('contact_id', '=', vals['contact_id'])])
            if existing == 0:
                vals['is_preferred'] = True
        return super().create(vals)
    
    def name_get(self):
        result = []
        for record in self:
            name = f"{record.communication_type_id.name}: {record.value}"
            if record.is_preferred:
                name = f"★ {name}"
            result.append((record.id, name))
        return result