# -*- coding: utf-8 -*-

import datetime as dt
from io import StringIO

import pytest
import pytz

import stix2.utils

amsterdam = pytz.timezone('Europe/Amsterdam')
eastern = pytz.timezone('US/Eastern')


@pytest.mark.parametrize('dttm, timestamp', [
    (dt.datetime(2017, 1, 1, tzinfo=pytz.utc), '2017-01-01T00:00:00Z'),
    (amsterdam.localize(dt.datetime(2017, 1, 1)), '2016-12-31T23:00:00Z'),
    (eastern.localize(dt.datetime(2017, 1, 1, 12, 34, 56)), '2017-01-01T17:34:56Z'),
    (eastern.localize(dt.datetime(2017, 7, 1)), '2017-07-01T04:00:00Z'),
    (dt.datetime(2017, 7, 1), '2017-07-01T00:00:00Z'),
    (dt.datetime(2017, 7, 1, 0, 0, 0, 1), '2017-07-01T00:00:00.000001Z'),
    (stix2.utils.STIXdatetime(2017, 7, 1, 0, 0, 0, 1, precision='millisecond'), '2017-07-01T00:00:00.000Z'),
    (stix2.utils.STIXdatetime(2017, 7, 1, 0, 0, 0, 1, precision='second'), '2017-07-01T00:00:00Z'),
])
def test_timestamp_formatting(dttm, timestamp):
    assert stix2.utils.format_datetime(dttm) == timestamp


@pytest.mark.parametrize('timestamp, dttm', [
    (dt.datetime(2017, 1, 1, 0, tzinfo=pytz.utc), dt.datetime(2017, 1, 1, 0, 0, 0, tzinfo=pytz.utc)),
    (dt.date(2017, 1, 1), dt.datetime(2017, 1, 1, 0, 0, 0, tzinfo=pytz.utc)),
    ('2017-01-01T00:00:00Z', dt.datetime(2017, 1, 1, 0, 0, 0, tzinfo=pytz.utc)),
    ('2017-01-01T02:00:00+2:00', dt.datetime(2017, 1, 1, 0, 0, 0, tzinfo=pytz.utc)),
    ('2017-01-01T00:00:00', dt.datetime(2017, 1, 1, 0, 0, 0, tzinfo=pytz.utc)),
])
def test_parse_datetime(timestamp, dttm):
    assert stix2.utils.parse_into_datetime(timestamp) == dttm


@pytest.mark.parametrize('timestamp, dttm, precision', [
    ('2017-01-01T01:02:03.000001', dt.datetime(2017, 1, 1, 1, 2, 3, 0, tzinfo=pytz.utc), 'millisecond'),
    ('2017-01-01T01:02:03.001', dt.datetime(2017, 1, 1, 1, 2, 3, 1000, tzinfo=pytz.utc), 'millisecond'),
    ('2017-01-01T01:02:03.1', dt.datetime(2017, 1, 1, 1, 2, 3, 100000, tzinfo=pytz.utc), 'millisecond'),
    ('2017-01-01T01:02:03.45', dt.datetime(2017, 1, 1, 1, 2, 3, 450000, tzinfo=pytz.utc), 'millisecond'),
    ('2017-01-01T01:02:03.45', dt.datetime(2017, 1, 1, 1, 2, 3, tzinfo=pytz.utc), 'second'),
])
def test_parse_datetime_precision(timestamp, dttm, precision):
    assert stix2.utils.parse_into_datetime(timestamp, precision) == dttm


@pytest.mark.parametrize('ts', [
    'foobar',
    1,
])
def test_parse_datetime_invalid(ts):
    with pytest.raises(ValueError):
        stix2.utils.parse_into_datetime('foobar')


@pytest.mark.parametrize('data', [
    {"a": 1},
    '{"a": 1}',
    StringIO(u'{"a": 1}'),
    [("a", 1,)],
])
def test_get_dict(data):
    assert stix2.utils._get_dict(data)


@pytest.mark.parametrize('data', [
    1,
    [1],
    ['a', 1],
    "foobar",
])
def test_get_dict_invalid(data):
    with pytest.raises(ValueError):
        stix2.utils._get_dict(data)


@pytest.mark.parametrize('stix_id, type', [
    ('malware--d69c8146-ab35-4d50-8382-6fc80e641d43', 'malware'),
    ('intrusion-set--899ce53f-13a0-479b-a0e4-67d46e241542', 'intrusion-set')
])
def test_get_type_from_id(stix_id, type):
    assert stix2.utils.get_type_from_id(stix_id) == type


def test_deduplicate(stix_objs1):
    unique = stix2.utils.deduplicate(stix_objs1)

    # Only 3 objects are unique
    # 2 id's vary
    # 2 modified times vary for a particular id

    assert len(unique) == 3

    ids = [obj['id'] for obj in unique]
    mods = [obj['modified'] for obj in unique]

    assert "indicator--d81f86b8-975b-bc0b-775e-810c5ad45a4f" in ids
    assert "indicator--d81f86b9-975b-bc0b-775e-810c5ad45a4f" in ids
    assert "2017-01-27T13:49:53.935Z" in mods
    assert "2017-01-27T13:49:53.936Z" in mods


@pytest.mark.parametrize('object, tuple_to_find, expected_index', [
    (stix2.v21.ObservedData(
        id="observed-data--b67d30ff-02ac-498a-92f9-32f845f448cf",
        created_by_ref="identity--f431f809-377b-45e0-aa1c-6a4751cae5ff",
        created="2016-04-06T19:58:16.000Z",
        modified="2016-04-06T19:58:16.000Z",
        first_observed="2015-12-21T19:00:00Z",
        last_observed="2015-12-21T19:00:00Z",
        number_observed=50,
        objects={
            "0": {
                "name": "foo.exe",
                "type": "file"
            },
            "1": {
                "type": "ipv4-addr",
                "value": "198.51.100.3"
            },
            "2": {
                "type": "network-traffic",
                "src_ref": "1",
                "protocols": [
                  "tcp",
                  "http"
                ],
                "extensions": {
                    "http-request-ext": {
                        "request_method": "get",
                        "request_value": "/download.html",
                        "request_version": "http/1.1",
                        "request_header": {
                            "Accept-Encoding": "gzip,deflate",
                            "User-Agent": "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113",
                            "Host": "www.example.com"
                        }
                    }
                }
            }
        },
    ), ('1', {"type": "ipv4-addr", "value": "198.51.100.3"}), 1),
    ({
        "type": "x-example",
        "id": "x-example--d5413db2-c26c-42e0-b0e0-ec800a310bfb",
        "created": "2018-06-11T01:25:22.063Z",
        "modified": "2018-06-11T01:25:22.063Z",
        "dictionary": {
            "key": {
                "key_one": "value",
                "key_two": "value"
            }
        }
    }, ('key', {'key_one': 'value', 'key_two': 'value'}), 0),
    ({
        "type": "language-content",
        "spec_version": "2.1",
        "id": "language-content--b86bd89f-98bb-4fa9-8cb2-9ad421da981d",
        "created": "2017-02-08T21:31:22.007Z",
        "modified": "2017-02-08T21:31:22.007Z",
        "object_ref": "campaign--12a111f0-b824-4baf-a224-83b80237a094",
        "object_modified": "2017-02-08T21:31:22.007Z",
        "contents": {
            "de": {
                "name": "Bank Angriff 1",
                "description": "Weitere Informationen über Banküberfall"
            },
            "fr": {
                "name": "Attaque Bank 1",
                "description": "Plus d'informations sur la crise bancaire"
            }
        }
    }, ('fr', {"name": "Attaque Bank 1", "description": "Plus d'informations sur la crise bancaire"}), 1)
])
def test_find_property_index(object, tuple_to_find, expected_index):
    assert stix2.utils.find_property_index(
        object,
        *tuple_to_find
    ) == expected_index


@pytest.mark.parametrize('dict_value, tuple_to_find, expected_index', [
    ({
        "contents": {
            "de": {
                "name": "Bank Angriff 1",
                "description": "Weitere Informationen über Banküberfall"
            },
            "fr": {
                "name": "Attaque Bank 1",
                "description": "Plus d'informations sur la crise bancaire"
            },
            "es": {
                "name": "Ataque al Banco",
                "description": "Mas informacion sobre el ataque al banco"
            }
        }
    }, ('es', {"name": "Ataque al Banco", "description": "Mas informacion sobre el ataque al banco"}), 1),  # Sorted alphabetically
    ({
        'my_list': [
            {"key_one": 1},
            {"key_two": 2}
        ]
    }, ('key_one', 1), 0)
])
def test_iterate_over_values(dict_value, tuple_to_find, expected_index):
    assert stix2.utils._find_property_in_seq(dict_value.values(), *tuple_to_find) == expected_index