from odoo import http
from odoo.http import request
import json
import logging

_logger = logging.getLogger(__name__)


class WhatsAppWebhookController(http.Controller):

    @http.route('/whatsapp/webhook', type='http', auth='public', methods=['POST'], csrf=False)
    def webhook(self, **kwargs):
        """
        Receive webhooks from WhatsApp Central.
        Events: message, status_update, conversation_update
        """
        try:
            # Parse JSON from request body
            data = json.loads(request.httprequest.data.decode('utf-8'))
            event_type = data.get('type')

            _logger.info(f'WhatsApp webhook received: {event_type}')

            handlers = {
                'message': self._handle_message,
                'status_update': self._handle_status_update,
                'conversation_update': self._handle_conversation_update,
                'account_status': self._handle_account_status,
            }

            handler = handlers.get(event_type)
            if handler:
                result = handler(data)
                return request.make_json_response(result)

            return request.make_json_response({'status': 'ignored', 'reason': f'Unknown event type: {event_type}'})

        except Exception as e:
            _logger.error(f'WhatsApp webhook error: {e}')
            return request.make_json_response({'status': 'error', 'message': str(e)})

    def _handle_message(self, data):
        """Handle incoming message"""
        msg_data = data.get('data', {})
        account_external_id = data.get('account_id')
        conversation_external_id = msg_data.get('conversation_id')

        account = request.env['whatsapp.account'].sudo().search([
            ('external_id', '=', account_external_id)
        ], limit=1)

        if not account:
            return {'status': 'ignored', 'reason': 'Account not found'}

        conversation = request.env['whatsapp.conversation'].sudo().search([
            ('external_id', '=', conversation_external_id)
        ], limit=1)

        if not conversation:
            phone = msg_data.get('from', '').split('@')[0]
            conversation = request.env['whatsapp.conversation'].sudo().create({
                'external_id': conversation_external_id,
                'account_id': account.id,
                'phone_number': phone,
                'contact_name': msg_data.get('contact_name'),
                'status': 'bot',
            })

            # Try to find partner by phone
            partner = request.env['res.partner'].sudo().search([
                ('phone', 'ilike', phone[-10:]),
            ], limit=1)

            if partner:
                conversation.partner_id = partner

        # Get direction from webhook data (inbound or outbound)
        direction = msg_data.get('direction', 'inbound')

        request.env['whatsapp.message'].sudo().create({
            'external_id': msg_data.get('id'),
            'conversation_id': conversation.id,
            'direction': direction,
            'message_type': msg_data.get('type', 'text'),
            'content': msg_data.get('content'),
            'media_url': msg_data.get('media_url'),
            'status': 'delivered' if direction == 'inbound' else 'sent',
        })

        return {'status': 'ok'}

    def _handle_status_update(self, data):
        """Handle message status update"""
        msg_data = data.get('data', {})
        external_id = msg_data.get('message_id')
        new_status = msg_data.get('status')

        message = request.env['whatsapp.message'].sudo().search([
            ('external_id', '=', external_id)
        ], limit=1)

        if message:
            message.write({'status': new_status})

        return {'status': 'ok'}

    def _handle_conversation_update(self, data):
        """Handle conversation status update"""
        conv_data = data.get('data', {})
        external_id = conv_data.get('conversation_id')
        new_status = conv_data.get('status')

        conversation = request.env['whatsapp.conversation'].sudo().search([
            ('external_id', '=', external_id)
        ], limit=1)

        if conversation:
            conversation.write({'status': new_status})

        return {'status': 'ok'}

    def _handle_account_status(self, data):
        """Handle account status change"""
        acc_data = data.get('data', {})
        external_id = data.get('account_id')
        new_status = acc_data.get('status')

        account = request.env['whatsapp.account'].sudo().search([
            ('external_id', '=', external_id)
        ], limit=1)

        if account:
            account.write({
                'status': new_status,
                'phone_number': acc_data.get('phone_number'),
                'qr_code': acc_data.get('qr_code'),
            })

        return {'status': 'ok'}

    @http.route('/whatsapp/webhook/test', type='http', auth='public', methods=['GET'])
    def webhook_test(self):
        """Test endpoint to verify webhook connectivity"""
        return request.make_json_response({'status': 'ok', 'message': 'WhatsApp webhook is active'})