import json
import time
import urllib.request
from io import BytesIO
from unittest import mock

import jwt
import pytest

from clean_python.oauth2 import TokenVerifierSettings


@pytest.fixture
def private_key():
    # this key was generated especially for this test suite; it has no other applications
    return {
        "p": "_PgJBxrGEy8I5KvY_nDRT9loaBPqHHn0AUiTa92zBrAX0qA8ZhV66pUkX2JehU3efduel4FOK2xx-W31p7kCLoaGsMtfKAPYC33KptCH9YXkeMQHq1jWfcRgAVXpdXc7M4pQxO8Dh2BU8qhtAzhpbP4tUPoLIGcTUGd-1ieDkqE",  # NOQA
        "kty": "RSA",
        "q": "hT0USPCNN4o2PauND53ubh2G5uOHzY9mfPuEXZ1fiRihCe5Bng0K8Pzx5QpSAjUY2-FhHa8jK8ITERmwT3MQKJpmlm_1R8GnaNVPOj8BpAhDlMzgkVikEGj0Pd7x_wdSko7KscyG-ZVsMw_KiCZpC6hMiI60w9GG14MtXhRVWhM",  # NOQA
        "d": "BNwTHorPcAMiDglxt5Ylz1jqQ67rYcnA0okvZxz0QPbLovuTM1WIaPIeGlqXNzB9NxXtZhHXtnhoSwPf2LxMmYWWgJLqhPQWRlqZhLhww0nGGUgk_b1gNnMQuuh2weLfPNUksddhDJHzW1pBiDQrhP0t064Pz_P8WtGUkBka5-Pb3pItaF_w4xDIhhTJS48kv5H-BrwK8Vlz-EofkmPgxXBvCwhVoXZihxEUVzc6X59e1UiymXr-3lbNeL-76Yb9JHJFjXh2o52v5eZDVT6ir-iUp7bBXTiZsFaBCUCfCjx3MiQkHNBNEV7Cr9DKvfGdK3r9IbkSAC1tiD4Y1oyZwQ",  # NOQA
        "e": "AQAB",
        "use": "sig",
        "kid": "_Lfex-skFCKBZd0xMN5dZSAX7uoG6LMx3i2qHReqU0c",
        "qi": "GNhYuNdxd4NyRhzreW72PWXzj2oIkm0rIHrcNW9bpqK1fxrsbiVUEVUly-cqpD_-AjFOyCWcKWQxHG7J8LeP2vW3_U4TLx_jKD9cc7S65gb37El1ihOwNWbapRxToOhP2sZa0g3y9P-M_8hQcfKr1OFMQMnD9wj-sVNw9yJf3I4",  # NOQA
        "dp": "xTs6BrEISEK-w1N9Dvy1JXWToroMKQGojiugzVQAVjGLkWvfS5RpzmZUAo52taZ911EZOHTXlqGpx1jFVGy5176JW2RlH5THqEX-b8tchcBL3yCv_hd4vHwUglYSfMRmgwvPZ4wXC0C_WqaYwA8Gm7UdbepWLIBRHbpjuOL8AaE",  # NOQA
        "alg": "RS256",
        "dq": "C4_UTcwKBRLKSCm10PAce5O2XBzMcQsLkrbkspbwbl4jw0_Yg9WP6H-aogx2N1jSMmppWgETpT1vGCHJietrMIrNcip-914Xn-I6wMws4UYSTzxEFHjDq-TfpOrOxxmkkbEwZ6Ne5xOPUxMAuTXUEb3l_keb6g4pjFQGwM405d8",  # NOQA
        "n": "g6k31kvFdTaCSxXhazC5JaVekYi836F0H_YLrDioQlwiegsGjUDYk5TM7z8iXwDIm0QZZgtoEBlEny8vXrt1WGMO8GGwnVNq0_ZAD3JYp-a_c0X7VM7I2Dze32zcy8mC4QhPedEbMVDzi1XrusGjNHWObkMKsLZ7RRlwdkgR4nRpzncou_2ZJLvc50C8tjd3juCpUMWXNsvDjoAenxoXs68SDK4h9QSjvaWaSHNRGYiYkGUvcL5rv3htbrHIUVAcBC9r0j5Ued1hBR9ND1KPxVJWnn8oRAxFrYIcQdaDFWnWdb5BY9pJQls9fHlt0PF9vXUm-GufWk0U8D4Lc8V78w",  # NOQA
    }


@pytest.fixture
def public_key(private_key):
    keys = ("alg", "e", "kid", "kty", "n", "use")
    return {k: private_key[k] for k in keys}


@pytest.fixture
def jwk_patched(public_key):
    with mock.patch.object(urllib.request, "urlopen") as urlopen:
        urlopen.return_value.__enter__.return_value = BytesIO(
            json.dumps({"keys": [public_key]}).encode()
        )
        yield urlopen


@pytest.fixture
def token_generator(private_key):
    default_claims = {
        "sub": "foo",
        "username": "piet",
        "iss": "https://some/auth/server",
        "scope": "user",
        "token_use": "access",
        "exp": int(time.time()) + 3600,
        "iat": int(time.time()) - 3600,
    }

    def generate_token(**claim_overrides):
        claims = {**default_claims, **claim_overrides}
        claims = {k: v for (k, v) in claims.items() if v is not None}
        return jwt.encode(
            claims,
            key=jwt.PyJWK.from_dict(private_key).key,
            algorithm=private_key["alg"],
            headers={"kid": private_key["kid"]},
        )

    return generate_token


@pytest.fixture
def settings():
    # settings match the defaults in the token_generator fixture
    return TokenVerifierSettings(
        issuer="https://some/auth/server",
        scope="user",
        algorithms=["RS256"],
        admin_users=["foo"],
    )