from odoo import models, fields, api


class ResPartner(models.Model):
    _inherit = 'res.partner'

    whatsapp_conversation_ids = fields.One2many(
        'whatsapp.conversation',
        'partner_id',
        string='Conversaciones WhatsApp',
    )
    whatsapp_conversation_count = fields.Integer(
        string='Conversaciones',
        compute='_compute_whatsapp_conversation_count',
    )
    whatsapp_last_conversation_id = fields.Many2one(
        'whatsapp.conversation',
        string='Última Conversación',
        compute='_compute_whatsapp_last_conversation',
    )
    whatsapp_unread_count = fields.Integer(
        string='Mensajes No Leídos',
        compute='_compute_whatsapp_unread_count',
    )

    @api.depends('whatsapp_conversation_ids')
    def _compute_whatsapp_conversation_count(self):
        for partner in self:
            partner.whatsapp_conversation_count = len(partner.whatsapp_conversation_ids)

    @api.depends('whatsapp_conversation_ids.last_message_at')
    def _compute_whatsapp_last_conversation(self):
        for partner in self:
            conversations = partner.whatsapp_conversation_ids.sorted(
                'last_message_at', reverse=True
            )
            partner.whatsapp_last_conversation_id = conversations[:1].id if conversations else False

    @api.depends('whatsapp_conversation_ids.unread_count')
    def _compute_whatsapp_unread_count(self):
        for partner in self:
            partner.whatsapp_unread_count = sum(
                partner.whatsapp_conversation_ids.mapped('unread_count')
            )

    def action_open_whatsapp_conversations(self):
        """Open WhatsApp conversations for this partner"""
        self.ensure_one()
        return {
            'type': 'ir.actions.act_window',
            'name': f'Conversaciones - {self.name}',
            'res_model': 'whatsapp.conversation',
            'view_mode': 'tree,form',
            'domain': [('partner_id', '=', self.id)],
            'context': {'default_partner_id': self.id},
        }

    def action_send_whatsapp(self):
        """Open wizard to send WhatsApp message"""
        self.ensure_one()
        phone = self.mobile or self.phone
        if not phone:
            return {
                'type': 'ir.actions.client',
                'tag': 'display_notification',
                'params': {
                    'message': 'El contacto no tiene número de teléfono',
                    'type': 'warning',
                }
            }

        return {
            'type': 'ir.actions.act_window',
            'name': 'Enviar WhatsApp',
            'res_model': 'whatsapp.send.wizard',
            'view_mode': 'form',
            'target': 'new',
            'context': {
                'default_partner_id': self.id,
                'default_phone': phone,
            },
        }

    def action_open_whatsapp_chat(self):
        """Open or create WhatsApp conversation"""
        self.ensure_one()
        phone = self.mobile or self.phone
        if not phone:
            return {
                'type': 'ir.actions.client',
                'tag': 'display_notification',
                'params': {
                    'message': 'El contacto no tiene número de teléfono',
                    'type': 'warning',
                }
            }

        account = self.env['whatsapp.account'].get_default_account()
        if not account:
            return {
                'type': 'ir.actions.client',
                'tag': 'display_notification',
                'params': {
                    'message': 'No hay cuenta WhatsApp configurada',
                    'type': 'warning',
                }
            }

        conversation = self.env['whatsapp.conversation'].find_or_create_by_phone(
            phone=phone,
            account_id=account.id,
            contact_name=self.name,
        )
        conversation.partner_id = self.id

        return conversation.action_open_chat()