import functools, logging

# stream options: 'ext://sys.stderr' or 'ext://sys.stdout'

# NOTE: This log config is confusing and may need work... 2022-10-07
# 'uvicorn' under 'loggers' creates an output to the 'console' handler
# Do not also add 'console' handler to the 'root' 'handlers' list
# For now just using that to add or remove file logging options.
logging.config.dictConfig({
    'version': 1,
    'formatters': {
        'default': {'format': '[%(asctime)s] %(levelname)s @ %(module)s.%(funcName)s()#%(lineno)d: %(message)s'},
        'long': {'format': '[%(asctime)s] %(levelname)s @ %(module)s.%(funcName)s()#%(lineno)d: %(message)s', 'datefmt': '%Y-%m-%d %H:%M:%S'},
        'short': {'format': '[%(asctime)s] %(levelname)s @ %(module)s.%(funcName)s()#%(lineno)d: %(message)s', 'datefmt': '%H:%M:%S', 'use_colors': True},
    },
    #'filename': 'example.log',
    # 'level': logging.ERROR,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'stream': 'ext://sys.stderr',
            'formatter': 'short',
        },
        'log_file_all': {
            'level': 'NOTSET',
            'class': 'logging.handlers.RotatingFileHandler',
            'formatter': 'long',
            'filename': 'admin/log/app.log',
            'maxBytes': 5120000, # 5120000 = 5 MB
            'backupCount': 5
        },
        'log_file_warning': {
            'level': 'WARNING',
            'class': 'logging.handlers.RotatingFileHandler',
            'formatter': 'long',
            'filename': 'admin/log/app_warning.log',
            'maxBytes': 512000, # 512000 = .512 MB
            'backupCount': 5
        },
        'test_handler': {
            'class': 'logging.StreamHandler',
            'level': 'INFO',
            'formatter': 'short',
        }
    },
    'loggers': {
        # 'uvicorn': {'handlers': ['default'], 'level': 'INFO'},
        'uvicorn': {'handlers': ['console'], 'level': 'INFO'},
        # 'uvicorn.error': {'level': 'INFO', 'handlers': ['default'], 'propagate': True},
        # 'uvicorn.error': {'level': 'INFO', 'handlers': ['console'], 'propagate': True},
        # 'uvicorn.access': {'handlers': ['access'], 'level': 'INFO', 'propagate': False},
    },
    'root': {
        'handlers': ['log_file_all'], #, 'log_file_all', 'log_file_warning'],
        # 'handlers': ['console', 'log_file_all'], #, 'log_file_all', 'log_file_warning'],
        'level': 'WARNING', # WARNING
    }
})


log = logging.getLogger('root')
# log.setLevel(logging.INFO) # DEBUG > INFO > WARNING > ERROR > CRITICAL
# logging.basicConfig(
#     format='[%(asctime)s] %(levelname)s @ %(module)s.%(funcName)s()#%(lineno)d: %(message)s'
#     )



# ### BEGIN ### Log ### logger_reset() ###
# https://realpython.com/primer-on-python-decorators/
# Updated 2022-02-15
def logger_reset(func):
    # log.setLevel(logging.WARNING) # DEBUG, INFO, WARNING, ERROR, EXCEPTION, CRITICAL
    # log.info(locals())
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        log.info(f'*** Function: "{func.__name__}()"')
        log.debug(f'*** Function Positional Args: {args}\nFunction Key Args: {kwargs}')
        init_log_level = log.level
        returned_result = func(*args, **kwargs)
        log.debug(f'*** Function finished: "{func.__name__}()". Resetting logger level to level: {log.level} ***')
        log.setLevel(init_log_level)
        return returned_result
    return wrapper
# ### END ### Log ### logger_reset() ###