import pytest
import fbchat
import datetime
from fbchat._util import (
    strip_json_cruft,
    parse_json,
    get_jsmods_require,
    get_jsmods_define,
    mimetype_to_key,
    get_url_parameter,
    seconds_to_datetime,
    millis_to_datetime,
    datetime_to_seconds,
    datetime_to_millis,
    seconds_to_timedelta,
    millis_to_timedelta,
    timedelta_to_seconds,
)


def test_strip_json_cruft():
    assert strip_json_cruft('for(;;);{"abc": "def"}') == '{"abc": "def"}'
    assert strip_json_cruft('{"abc": "def"}') == '{"abc": "def"}'


def test_strip_json_cruft_invalid():
    with pytest.raises(AttributeError):
        strip_json_cruft(None)
    with pytest.raises(fbchat.ParseError, match="No JSON object found"):
        strip_json_cruft("No JSON object here!")


def test_parse_json():
    assert parse_json('{"a":"b"}') == {"a": "b"}


def test_parse_json_invalid():
    with pytest.raises(fbchat.ParseError, match="Error while parsing JSON"):
        parse_json("No JSON object here!")


def test_get_jsmods_require():
    argument = {
        "signalsToCollect": [
            30000,
            30001,
            30003,
            30004,
            30005,
            30002,
            30007,
            30008,
            30009,
        ]
    }
    data = [
        ["BanzaiODS"],
        [
            "TuringClientSignalCollectionTrigger",
            "startStaticSignalCollection",
            [],
            [argument],
        ],
    ]
    assert get_jsmods_require(data) == {
        "BanzaiODS": [],
        "TuringClientSignalCollectionTrigger.startStaticSignalCollection": [argument],
    }


def test_get_jsmods_require_version_specifier():
    data = [
        ["DimensionTracking@1234"],
        ["CavalryLoggerImpl@2345", "startInstrumentation", [], []],
    ]
    assert get_jsmods_require(data) == {
        "DimensionTracking": [],
        "CavalryLoggerImpl.startInstrumentation": [],
    }


def test_get_jsmods_require_get_image_url():
    data = [
        [
            "ServerRedirect",
            "redirectPageTo",
            [],
            ["https://scontent-arn2-1.xx.fbcdn.net/v/image.png&dl=1", False, False],
        ],
        ["TuringClientSignalCollectionTrigger", "...", [], [...]],
        ["TuringClientSignalCollectionTrigger", "retrieveSignals", [], [...]],
        ["BanzaiODS"],
        ["BanzaiScuba"],
    ]
    url = "https://scontent-arn2-1.xx.fbcdn.net/v/image.png&dl=1"
    assert get_jsmods_require(data)["ServerRedirect.redirectPageTo"][0] == url


def test_get_jsmods_define():
    data = [
        [
            "BootloaderConfig",
            [],
            {
                "jsRetries": [200, 500],
                "jsRetryAbortNum": 2,
                "jsRetryAbortTime": 5,
                "payloadEndpointURI": "https://www.facebook.com/ajax/bootloader-endpoint/",
                "preloadBE": False,
                "assumeNotNonblocking": True,
                "shouldCoalesceModuleRequestsMadeInSameTick": True,
                "staggerJsDownloads": False,
                "preloader_num_preloads": 0,
                "preloader_preload_after_dd": False,
                "preloader_num_loads": 1,
                "preloader_enabled": False,
                "retryQueuedBootloads": False,
                "silentDups": False,
                "asyncPreloadBoost": True,
            },
            123,
        ],
        [
            "CSSLoaderConfig",
            [],
            {"timeout": 5000, "modulePrefix": "BLCSS:", "loadEventSupported": True},
            456,
        ],
        ["CurrentCommunityInitialData", [], {}, 789],
        [
            "CurrentEnvironment",
            [],
            {"facebookdotcom": True, "messengerdotcom": False},
            987,
        ],
    ]
    assert get_jsmods_define(data) == {
        "BootloaderConfig": {
            "jsRetries": [200, 500],
            "jsRetryAbortNum": 2,
            "jsRetryAbortTime": 5,
            "payloadEndpointURI": "https://www.facebook.com/ajax/bootloader-endpoint/",
            "preloadBE": False,
            "assumeNotNonblocking": True,
            "shouldCoalesceModuleRequestsMadeInSameTick": True,
            "staggerJsDownloads": False,
            "preloader_num_preloads": 0,
            "preloader_preload_after_dd": False,
            "preloader_num_loads": 1,
            "preloader_enabled": False,
            "retryQueuedBootloads": False,
            "silentDups": False,
            "asyncPreloadBoost": True,
        },
        "CSSLoaderConfig": {
            "timeout": 5000,
            "modulePrefix": "BLCSS:",
            "loadEventSupported": True,
        },
        "CurrentCommunityInitialData": {},
        "CurrentEnvironment": {"facebookdotcom": True, "messengerdotcom": False},
    }


def test_get_jsmods_define_get_fb_dtsg():
    data = [
        ["DTSGInitialData", [], {"token": "AQG-abcdefgh:AQGijklmnopq"}, 258],
        [
            "DTSGInitData",
            [],
            {"token": "AQG-abcdefgh:AQGijklmnopq", "async_get_token": "ABC123:DEF456"},
            3515,
        ],
    ]
    jsmods = get_jsmods_define(data)
    assert (
        jsmods["DTSGInitData"]["token"]
        == jsmods["DTSGInitialData"]["token"]
        == "AQG-abcdefgh:AQGijklmnopq"
    )


def test_mimetype_to_key():
    assert mimetype_to_key(None) == "file_id"
    assert mimetype_to_key("image/gif") == "gif_id"
    assert mimetype_to_key("video/mp4") == "video_id"
    assert mimetype_to_key("video/quicktime") == "video_id"
    assert mimetype_to_key("image/png") == "image_id"
    assert mimetype_to_key("image/jpeg") == "image_id"
    assert mimetype_to_key("audio/mpeg") == "audio_id"
    assert mimetype_to_key("application/json") == "file_id"


def test_get_url_parameter():
    assert get_url_parameter("http://example.com?a=b&c=d", "c") == "d"
    assert get_url_parameter("http://example.com?a=b&a=c", "a") == "b"
    assert get_url_parameter("http://example.com", "a") is None


DT_0 = datetime.datetime(1970, 1, 1, 0, 0, tzinfo=datetime.timezone.utc)
DT = datetime.datetime(2018, 11, 16, 1, 51, 4, 162000, tzinfo=datetime.timezone.utc)
DT_NO_TIMEZONE = datetime.datetime(2018, 11, 16, 1, 51, 4, 162000)


def test_seconds_to_datetime():
    assert seconds_to_datetime(0) == DT_0
    assert seconds_to_datetime(1542333064.162) == DT
    assert seconds_to_datetime(1542333064.162) != DT_NO_TIMEZONE


def test_millis_to_datetime():
    assert millis_to_datetime(0) == DT_0
    assert millis_to_datetime(1542333064162) == DT
    assert millis_to_datetime(1542333064162) != DT_NO_TIMEZONE


def test_datetime_to_seconds():
    assert datetime_to_seconds(DT_0) == 0
    assert datetime_to_seconds(DT) == 1542333064  # Rounded
    datetime_to_seconds(DT_NO_TIMEZONE)  # Depends on system timezone


def test_datetime_to_millis():
    assert datetime_to_millis(DT_0) == 0
    assert datetime_to_millis(DT) == 1542333064162
    datetime_to_millis(DT_NO_TIMEZONE)  # Depends on system timezone


def test_seconds_to_timedelta():
    assert seconds_to_timedelta(0.001) == datetime.timedelta(microseconds=1000)
    assert seconds_to_timedelta(1) == datetime.timedelta(seconds=1)
    assert seconds_to_timedelta(3600) == datetime.timedelta(hours=1)
    assert seconds_to_timedelta(86400) == datetime.timedelta(days=1)


def test_millis_to_timedelta():
    assert millis_to_timedelta(1) == datetime.timedelta(microseconds=1000)
    assert millis_to_timedelta(1000) == datetime.timedelta(seconds=1)
    assert millis_to_timedelta(3600000) == datetime.timedelta(hours=1)
    assert millis_to_timedelta(86400000) == datetime.timedelta(days=1)


def test_timedelta_to_seconds():
    assert timedelta_to_seconds(datetime.timedelta(microseconds=1000)) == 0  # Rounded
    assert timedelta_to_seconds(datetime.timedelta(seconds=1)) == 1
    assert timedelta_to_seconds(datetime.timedelta(hours=1)) == 3600
    assert timedelta_to_seconds(datetime.timedelta(days=1)) == 86400