from django.shortcuts import render
from django.http import HttpResponse, JsonResponse
from django.views.decorators.csrf import csrf_exempt
from .models import ASSNotification
from django.conf import settings

import json, jwt
# import base64
# import os

import app_store_notifications_v2_validator as asn2
from app_store_notifications_v2_validator import InvalidTokenError

def index(request):
    return HttpResponse("Hello, world. You're at the subs index.")

def test(request):
    KEY_FILE = settings.ASS_KEY_FILE

    with open(KEY_FILE,'r') as key_file:
        key = ''.join(key_file.readlines())
    return HttpResponse(key)

@csrf_exempt
def app_store_webhook(request):

    decoded = request.body.decode('utf-8')
    # Parse the JSON payload
    #fulljson = json.loads(data)
    # signedPayload = fulljson['signedPayload']

    decoded_payload = json.loads(base64.b64decode(data))

    # Now you can access the decoded data
    type = decoded_payload.get('notification_type')
    notification = ASSNotification(
        content=type,
    )
    notification.save()


    # try:
    #     data = asn2.parse(request.body)
    #     type = data['notificationType']
    #
    #     notification = ASSNotification(
    #         content=type,
    #     )
    #     notification.save()
    #
    # except InvalidTokenError:
    # 	pass

    # KEY_FILE = settings.ASS_KEY_FILE
    #
    # with open(KEY_FILE,'r') as key_file:
    #     key = ''.join(key_file.readlines())

    # decodedPayload = _decode_jws(signedPayload, root_cert_path=None, algorithms=['ES256'])

    # decodedPayload = jwt.decode(signedPayload, key, algorithms=['ES256'])

    #print('hell yeah!' + str(key))
    #logger.debug('test getLogger' + str(key))


    return JsonResponse({'status': 'success'})


# def _decode_jws(token, root_cert_path, algorithms):
#   try:
#     header = jwt.get_unverified_header(token)
#
#     # the first cert contains the public key used to sign the jwt
#     first_cert_data = header["x5c"][0]
#     first_cert_data = add_labels(first_cert_data)
#     first_cert = load_certificate(FILETYPE_PEM, first_cert_data)
#
#     # the other certs are an x5c (X.509 certificate chain)
#     chain_datas = header["x5c"][1:]
#     chain_datas = [add_labels(cd) for cd in chain_datas]
#     chain = [load_certificate(FILETYPE_PEM, cd) for cd in chain_datas]
#
#     public_key = first_cert.get_pubkey().to_cryptography_key()
#
#     store = X509Store()
#     store.add_cert(_get_root_cert(root_cert_path))
#     ctx = X509StoreContext(store=store, certificate=first_cert, chain=chain)
#     ctx.verify_certificate()
#
#     return jwt.decode(token, public_key, algorithms=algorithms)
#   except (ValueError, KeyError, jwt.exceptions.PyJWTError, X509StoreContextError) as err:
#     raise InvalidTokenError from err
#
# def _get_root_cert(root_cert_path):
#
#   fn = os.environ.get("APPLE_ROOT_CA")
#   if fn is None:
#     fn = root_cert_path or "AppleRootCA-G3.cer"
#
#   fn = os.path.expanduser(fn)
#   with open(fn, "rb") as f:
#     data = f.read()
#     root_cert = load_certificate(FILETYPE_ASN1, data)
#
#   return root_cert
#
# class InvalidTokenError(Exception):
#   pass
#
# def add_labels(key: str) -> bytes:
#   return ("-----BEGIN CERTIFICATE-----\n" + key + "\n-----END CERTIFICATE-----").encode()