import logging
import requests
from odoo import http

_logger = logging.getLogger(__name__)


class PaydunyaController(http.Controller):
    @http.route('/payment/paydunya/return', type='http', auth='public', methods=['GET'], csrf=False)
    def paydunya_return(self, **kwargs):
        """Handle return from PayDunya after payment attempt."""
        token = kwargs.get('token') or http.request.params.get('token')
        if not token:
            return http.request.redirect('/')

        provider = http.request.env['payment.provider'].sudo().search([('code', '=', 'paydunya')], limit=1)
        if not provider:
            _logger.warning('PayDunya return called but no provider found')
            return http.request.redirect('/')

        # Build check URL using the confirm endpoint
        base = provider._get_paydunya_api_base()
        confirm_url = base + '/checkout-invoice/confirm/{}'.format(token)

        headers = {
            'Content-Type': 'application/json',
            'PAYDUNYA-MASTER-KEY': provider.paydunya_master_key or '',
            'PAYDUNYA-PRIVATE-KEY': provider.paydunya_private_key or '',
            'PAYDUNYA-TOKEN': provider.paydunya_token or ''
        }

        try:
            # GET request to verify status
            resp = requests.get(confirm_url, headers=headers, timeout=15)
            data = resp.json()
            _logger.info('PayDunya confirm response: %s', data)
        except Exception as e:
            _logger.exception('Error verifying PayDunya invoice: %s', e)
            data = {'token': token, 'status': 'failed'}

        # Trigger transaction handling with the confirmed data
        try:
            tx_model = http.request.env['payment.transaction'].sudo()
            handled = tx_model._handle_notification_data(data)
            if handled:
                return http.request.redirect('/payment/process')
        except Exception:
            _logger.exception('Error handling PayDunya notification data')

        return http.request.redirect('/')

    @http.route('/payment/paydunya/cancel', type='http', auth='public', methods=['GET'], csrf=False)
    def paydunya_cancel(self, **kwargs):
        """Handle cancellation from PayDunya."""
        token = kwargs.get('token') or http.request.params.get('token')
        _logger.info('PayDunya payment cancelled: token=%s', token)
        return http.request.redirect('/shop/cart')

    @http.route('/payment/paydunya/callback', type='http', auth='public', methods=['POST'], csrf=False)
    def paydunya_callback(self, **kwargs):
        """Handle IPN callback from PayDunya.
        
        PayDunya sends data as application/x-www-form-urlencoded with 'data' key containing JSON.
        """
        try:
            # The 'data' parameter contains the JSON-encoded transaction info
            import json
            data_str = http.request.params.get('data')
            if data_str:
                data = json.loads(data_str)
                _logger.info('PayDunya IPN callback received: %s', data)
                
                tx_model = http.request.env['payment.transaction'].sudo()
                tx_model._handle_notification_data(data)
        except Exception:
            _logger.exception('Error handling PayDunya callback')

        # Always return 200 OK to PayDunya
        return 'OK'