"""The cache_keys module is mostly covered indirectly via other tests.
This just contains tests for some extra edge cases not covered elsewhere.
"""

import json

import pytest
from requests import Request, Response
from urllib3 import HTTPResponse

from requests_cache.cache_keys import (
    MAX_NORM_BODY_SIZE,
    create_key,
    normalize_headers,
    normalize_request,
    redact_response,
)

CACHE_KEY = 'e25f7e6326966e82'


@pytest.mark.parametrize(
    'url, params',
    [
        ('https://example.com?foo=bar&param=1', None),
        ('https://example.com?foo=bar&param=1', {}),
        ('https://example.com/?foo=bar&param=1', {}),
        ('https://example.com?foo=bar&param=1&', {}),
        ('https://example.com?param=1&foo=bar', {}),
        ('https://example.com?param=1', {'foo': 'bar'}),
        ('https://example.com?foo=bar', {'param': '1'}),
        ('https://example.com', {'foo': 'bar', 'param': '1'}),
        ('https://example.com', {'foo': 'bar', 'param': 1}),
        ('https://example.com?', {'foo': 'bar', 'param': '1'}),
    ],
)
def test_create_key__normalize_url_params(url, params):
    """All of the above variations should produce the same cache key"""
    request = Request(
        method='GET',
        url=url,
        params=params,
    )
    assert create_key(request) == CACHE_KEY


def test_create_key__normalize_key_only_params():
    request_1 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_1')
    request_2 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_2')
    assert create_key(request_1) != create_key(request_2)

    request_1 = Request(method='GET', url='https://img.site.com/base/img.jpg?k=v&param_1')
    request_2 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_1&k=v')
    assert create_key(request_1) == create_key(request_2)


def test_create_key__normalize_duplicate_params():
    request_1 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_1=a&param_1=b')
    request_2 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_1=a')
    request_3 = Request(method='GET', url='https://img.site.com/base/img.jpg?param_1=b')
    assert create_key(request_1) != create_key(request_2) != create_key(request_3)

    request_1 = Request(
        method='GET', url='https://img.site.com/base/img.jpg?param_1=a&param_1=b&k=v'
    )
    request_2 = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg?param_1=b&param_1=a',
        params={'k': 'v'},
    )
    assert create_key(request_1) == create_key(request_2)


def test_redact_response__escaped_params():
    """Test that redact_response() handles urlescaped request parameters"""
    url = 'https://img.site.com/base/img.jpg?where=code%3D123'
    request = Request(method='GET', url=url).prepare()
    response = Response()
    response.url = url
    response.request = request
    response.raw = HTTPResponse(request_url=url)
    redacted_response = redact_response(response, [])
    assert redacted_response.url == 'https://img.site.com/base/img.jpg?where=code%3D123'
    assert redacted_response.request.url == 'https://img.site.com/base/img.jpg?where=code%3D123'
    assert redacted_response.request.path_url == '/base/img.jpg?where=code%3D123'
    assert (
        redacted_response.raw._request_url == 'https://img.site.com/base/img.jpg?where=code%3D123'
    )
    if hasattr(redacted_response.raw, 'url'):
        assert redacted_response.raw.url == 'https://img.site.com/base/img.jpg?where=code%3D123'


@pytest.mark.parametrize(
    'content_type',
    [
        'application/json',
        'application/json; charset=utf-8',
        'application/vnd.api+json; charset=utf-8',
        'application/any_string+json',
    ],
)
@pytest.mark.parametrize(
    'data',
    [
        b'{"param_1": "value_1", "param_2": "value_2"}',
        b'["param_3", "param_2", "param_1"',
    ],
)
def test_normalize_request__json_body(data, content_type):
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        data=b'{"param_1": "value_1", "param_2": "value_2"}',
        headers={'Content-Type': content_type},
    )
    norm_request = normalize_request(request, ignored_parameters=['param_2'])
    assert norm_request.body == b'{"param_1": "value_1", "param_2": "REDACTED"}'


def test_normalize_request__json_body_list_filtered():
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        data=b'["param_3", "param_2", "param_1"]',
        headers={'Content-Type': 'application/json'},
    )
    norm_request = normalize_request(request, ignored_parameters=['param_2', 'param_1'])
    assert norm_request.body == b'["param_3"]'


def test_normalize_request__json_body_invalid():
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        data=b'invalid JSON!',
        headers={'Content-Type': 'application/json'},
    )
    assert normalize_request(request, ignored_parameters=['param_2']).body == b'invalid JSON!'


def test_normalize_request__json_body_empty():
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        data=b'{}',
        headers={'Content-Type': 'application/json'},
    )
    assert normalize_request(request, ignored_parameters=['param_2']).body == b'{}'


@pytest.mark.parametrize(
    'content_type',
    ['application/octet-stream', None],
)
def test_normalize_request__binary_body(content_type):
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        data=b'some bytes',
        headers={'Content-Type': content_type},
    )
    assert normalize_request(request, ignored_parameters=['param']).body == request.data


def test_normalize_request__oversized_body():
    body = {'param': '1', 'content': '0' * MAX_NORM_BODY_SIZE}
    encoded_body = json.dumps(body).encode('utf-8')

    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        json=body,
        headers={'Content-Type': 'application/octet-stream'},
    )
    assert normalize_request(request, ignored_parameters=['param']).body == encoded_body


def test_normalize_headers__single_header_value_as_bytes():
    headers = {'Accept': b'gzip'}
    norm_headers = normalize_headers(headers)
    assert norm_headers == {'Accept': 'gzip'}


def test_normalize_headers__multiple_header_values_as_bytes():
    headers = {'Accept': b'gzip,  deflate,Venmo,  PayPal, '}
    norm_headers = normalize_headers(headers)
    assert norm_headers == {'Accept': 'deflate, gzip, paypal, venmo'}


def test_normalize_headers__single_header_value_as_string():
    headers = {'Accept': 'gzip'}
    norm_headers = normalize_headers(headers)
    assert norm_headers == {'Accept': 'gzip'}


def test_normalize_headers__multiple_header_values_as_string():
    headers = {'Accept': 'gzip,  deflate,Venmo,  PayPal, '}
    norm_headers = normalize_headers(headers)
    assert norm_headers == {'Accept': 'deflate, gzip, paypal, venmo'}


def test_remove_ignored_headers__empty():
    request = Request(
        method='GET',
        url='https://img.site.com/base/img.jpg',
        headers={'foo': 'bar'},
    )
    assert normalize_request(request.prepare(), ignored_parameters=None).headers == request.headers