mercadopago_check.py

import os
import sys
import hashlib
from pprint import pprint
import requests as rq
from django.urls import reverse_lazy


class MercadopagoCheckOut:
    url_checkout = None
    url_checkout_sandbox = None
    url_pay = None
    preference_id = None

    def __init__(self, token_mp):
        self.token_mp = token_mp
        self.preference_result = None
        self.payer = None
        self.url_pay = None
        self.get_headers = {
            'Authorization': 'Bearer {}'.format(token_mp),
            'Content-Type': 'application/json'
        }

    def payer_info(self, **kwargs):
        info_payer = {
            "name": kwargs.get('nombre', None),
            "surname": kwargs.get('apellido', None),
            "email": kwargs.get('email', None),
            "phone": {
                "area_code": kwargs.get('codigo_de_area', None),
                "number": kwargs.get('telefono', None)
            },
            "identification": {
                "type": "DNI",
                "number": kwargs.get('dni', None)
            },
            "address": {
                "street_name": kwargs.get('calle', None),
                "street_number": kwargs.get('numero', None),
                "zip_code": kwargs.get('codigo_postal', None)
            }
        }
        self.payer = info_payer

        return info_payer

    def create_preferences(self, url_tienda, items, url_return_success, url_return_pending, exclude_ticket=False, costo_envio=None, **kwargs):
        try:

            preference = {
                "items": items,
                "payer": self.payer,
                "total_amount": kwargs.get('total',0),

                "back_urls": {
                    "success": f'{url_tienda}{url_return_success}',
                    "pending": f'{url_tienda}{url_return_pending}',
                },

                "additional_info": {
                    "items": items,
                    "payer": self.payer
                },

                "auto_return": "approved",
                "binary_mode": True,
                "notification_url": kwargs.get('notification_url', None),
                "external_reference": kwargs.get('external_reference', None),
                "expires": False,

            }

            if exclude_ticket is not False:
                preference["payment_methods"] = {
                    "excluded_payment_types": [
                        {
                            "id": "ticket"
                        },
                    ]
                }

            if costo_envio is not None:
                preference["shipments"] = {
                    "mode": "not_specified",
                    "cost": costo_envio,
                    "receiver_address": {
                        "zip_code": self.payer['address']['zip_code'],
                        "street_name": self.payer['address']['street_name'],
                        "street_number": self.payer['address']['street_number']
                    }
                }

            url_send = 'https://api.mercadopago.com/checkout/preferences'
            preferences = rq.post(url=url_send, headers=self.get_headers, json=preference)
            
            pprint(preferences.json())
            
            if 'status' in preferences.json():
                if preferences.json()['status'] != 200:
                    self.preference_result = str(preferences.json()['message'])
                    return self.preference_result
            else:
                self.preference_result = preferences.json()

                self.url_checkout = self.preference_result["init_point"]
                self.preference_id = self.preference_result["id"]
                self.url_checkout_sandbox = self.preference_result["sandbox_init_point"]

                self.url_pay = self.url_checkout

                if os.environ.get('DEV'):
                    self.url_pay = self.url_checkout_sandbox

                return self.preference_result
        except:
            error = str(sys.exc_info())
            pprint(f'Error class MP: {error}')
            self.preference_result = error

    def create_button(self, label='Pagar tu compra', color='#c0392b'):
        try:
            if self.url_checkout is None:
                return u'Error no se creo el pago: {}'.format(self.preference_result)

            url = self.url_checkout

            html = u"""
                <a href="{url}" 
                    data-model-name="MP-Checkout" 
                    data-button-label="{label}" 
                    data-header-color="{color}" 
                    data-mp-mode="redirect" 
                    class="btn btn-primary btn-block" 
                    data-elements-color="#8e44ad">{label}</a>
                <!-- <script
                   src="https://www.mercadopago.com.ar/integrations/v1/web-payment-checkout.js"
                   data-preference-id="{_id}">
                </script> -->
                <!-- <script type="text/javascript" src="//resources.mlstatic.com/mptools/render.js"></script> -->
            """.format(url=url, label=label, color=color, _id=self.preference_id)

            return html
        except:
            return u'Error button: {}'.format(sys.exc_info())

    @staticmethod
    def get_promos_mercadopago():
        try:
            rend = u"""
                 <div style="clear: both" id="promos-merc">
                     <div class="clearfix"></div>
                     <iframe src="https://www.mercadopago.com/mla/credit_card_promos.htm" frameborder="0" scrolling="no" style="width: 100%;height: 1110px;display: block;margin: 0 auto !important;"></iframe>
                 </div>
            """
            return rend
        except:
            return u'Error promos'