import logging
import uuid

from importlib import reload
from io import StringIO
from unittest.mock import Mock

import pytest

import sanic

from sanic import Sanic
from sanic.log import Colors
from sanic.log import LOGGING_CONFIG_DEFAULTS, logger
from sanic.response import text


logging_format = """module: %(module)s; \
function: %(funcName)s(); \
message: %(message)s"""


def reset_logging():
    logging.shutdown()
    reload(logging)


def test_log(app):
    log_stream = StringIO()
    for handler in logging.root.handlers[:]:
        logging.root.removeHandler(handler)
    logging.basicConfig(
        format=logging_format, level=logging.DEBUG, stream=log_stream
    )
    logging.getLogger("asyncio").setLevel(logging.WARNING)
    log = logging.getLogger()
    rand_string = str(uuid.uuid4())

    @app.route("/")
    def handler(request):
        log.info(rand_string)
        return text("hello")

    request, response = app.test_client.get("/")
    log_text = log_stream.getvalue()
    assert rand_string in log_text


def test_logging_defaults():
    # reset_logging()
    Sanic("test_logging")

    for fmt in [h.formatter for h in logging.getLogger("sanic.root").handlers]:
        assert (
            fmt._fmt
            == LOGGING_CONFIG_DEFAULTS["formatters"]["generic"]["format"]
        )

    for fmt in [
        h.formatter for h in logging.getLogger("sanic.error").handlers
    ]:
        assert (
            fmt._fmt
            == LOGGING_CONFIG_DEFAULTS["formatters"]["generic"]["format"]
        )

    for fmt in [
        h.formatter for h in logging.getLogger("sanic.access").handlers
    ]:
        assert (
            fmt._fmt
            == LOGGING_CONFIG_DEFAULTS["formatters"]["access"]["format"]
        )


def test_logging_pass_customer_logconfig():
    # reset_logging()

    modified_config = LOGGING_CONFIG_DEFAULTS
    modified_config["formatters"]["generic"][
        "format"
    ] = "%(asctime)s - (%(name)s)[%(levelname)s]: %(message)s"
    modified_config["formatters"]["access"][
        "format"
    ] = "%(asctime)s - (%(name)s)[%(levelname)s]: %(message)s"

    Sanic("test_logging", log_config=modified_config)

    for fmt in [h.formatter for h in logging.getLogger("sanic.root").handlers]:
        assert fmt._fmt == modified_config["formatters"]["generic"]["format"]

    for fmt in [
        h.formatter for h in logging.getLogger("sanic.error").handlers
    ]:
        assert fmt._fmt == modified_config["formatters"]["generic"]["format"]

    for fmt in [
        h.formatter for h in logging.getLogger("sanic.access").handlers
    ]:
        assert fmt._fmt == modified_config["formatters"]["access"]["format"]


@pytest.mark.parametrize(
    "debug",
    (
        True,
        False,
    ),
)
def test_log_connection_lost(app, debug, monkeypatch):
    """Should not log Connection lost exception on non debug"""
    stream = StringIO()
    error = logging.getLogger("sanic.error")
    error.addHandler(logging.StreamHandler(stream))
    monkeypatch.setattr(
        sanic.server.protocols.http_protocol, "error_logger", error
    )

    @app.route("/conn_lost")
    async def conn_lost(request):
        response = text("Ok")
        request.transport.close()
        return response

    req, res = app.test_client.get("/conn_lost", debug=debug, allow_none=True)
    assert res is None

    log = stream.getvalue()

    if debug:
        assert "Connection lost before response written @" in log
    else:
        assert "Connection lost before response written @" not in log


@pytest.mark.asyncio
async def test_logger(caplog):
    rand_string = str(uuid.uuid4())

    app = Sanic(name="Test")

    @app.get("/")
    def log_info(request):
        logger.info(rand_string)
        return text("hello")

    with caplog.at_level(logging.INFO):
        _ = await app.asgi_client.get("/")

    record = ("sanic.root", logging.INFO, rand_string)
    assert record in caplog.record_tuples


def test_logging_modified_root_logger_config():
    # reset_logging()

    modified_config = LOGGING_CONFIG_DEFAULTS
    modified_config["loggers"]["sanic.root"]["level"] = "DEBUG"

    Sanic("test_logging", log_config=modified_config)

    assert logging.getLogger("sanic.root").getEffectiveLevel() == logging.DEBUG


def test_access_log_client_ip_remote_addr(monkeypatch):
    access = Mock()
    monkeypatch.setattr(sanic.http.http1, "access_logger", access)

    app = Sanic("test_logging")
    app.config.ACCESS_LOG = True
    app.config.PROXIES_COUNT = 2

    @app.route("/")
    async def handler(request):
        return text(request.remote_addr)

    headers = {"X-Forwarded-For": "1.1.1.1, 2.2.2.2"}

    request, response = app.test_client.get("/", headers=headers)

    assert request.remote_addr == "1.1.1.1"
    access.info.assert_called_with(
        "",
        extra={
            "status": 200,
            "byte": len(response.content),
            "host": f"{request.remote_addr}:{request.port}",
            "request": f"GET {request.scheme}://{request.host}/",
        },
    )


def test_access_log_client_ip_reqip(monkeypatch):
    access = Mock()
    monkeypatch.setattr(sanic.http.http1, "access_logger", access)

    app = Sanic("test_logging")
    app.config.ACCESS_LOG = True

    @app.route("/")
    async def handler(request):
        return text(request.ip)

    request, response = app.test_client.get("/")

    access.info.assert_called_with(
        "",
        extra={
            "status": 200,
            "byte": len(response.content),
            "host": f"{request.ip}:{request.port}",
            "request": f"GET {request.scheme}://{request.host}/",
        },
    )


@pytest.mark.parametrize(
    "app_verbosity,log_verbosity,exists",
    (
        (0, 0, True),
        (0, 1, False),
        (0, 2, False),
        (1, 0, True),
        (1, 1, True),
        (1, 2, False),
        (2, 0, True),
        (2, 1, True),
        (2, 2, True),
    ),
)
def test_verbosity(app, caplog, app_verbosity, log_verbosity, exists):
    rand_string = str(uuid.uuid4())

    @app.get("/")
    def log_info(request):
        logger.info("DEFAULT")
        logger.info(rand_string, extra={"verbosity": log_verbosity})
        return text("hello")

    with caplog.at_level(logging.INFO):
        _ = app.test_client.get(
            "/", server_kwargs={"verbosity": app_verbosity}
        )

    record = ("sanic.root", logging.INFO, rand_string)

    if exists:
        assert record in caplog.record_tuples
    else:
        assert record not in caplog.record_tuples

    if app_verbosity == 0:
        assert ("sanic.root", logging.INFO, "DEFAULT") in caplog.record_tuples


def test_colors_enum_format():
    assert f'{Colors.END}' == Colors.END.value
    assert f'{Colors.BOLD}' == Colors.BOLD.value
    assert f'{Colors.BLUE}' == Colors.BLUE.value
    assert f'{Colors.GREEN}' == Colors.GREEN.value
    assert f'{Colors.PURPLE}' == Colors.PURPLE.value
    assert f'{Colors.RED}' == Colors.RED.value
    assert f'{Colors.SANIC}' == Colors.SANIC.value
    assert f'{Colors.YELLOW}' == Colors.YELLOW.value