import uuid
from importlib import reload

from sanic.response import text
from sanic.log import LOGGING_CONFIG_DEFAULTS
from sanic import Sanic
from io import StringIO
import logging

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


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


def test_log():
    log_stream = StringIO()
    for handler in logging.root.handlers[:]:
        logging.root.removeHandler(handler)
    logging.basicConfig(
        format=logging_format,
        level=logging.DEBUG,
        stream=log_stream
    )
    log = logging.getLogger()
    app = Sanic('test_logging')
    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()
    app = Sanic("test_logging")

    for fmt in [h.formatter for h in logging.getLogger('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'

    app = Sanic("test_logging", log_config=modified_config)

    for fmt in [h.formatter for h in logging.getLogger('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']