import logging
import os
import json
import socket
import sys

LOG_LEVEL = os.getenv('LOG_LEVEL', 'DEBUG')
LOG_FORMAT = os.getenv('LOG_FORMAT', 'human')
LOG_PATTERN = os.getenv('LOG_PATTERN', '%(asctime)s - %(levelname)s - %(message)s')
LOG_EXTRA = os.getenv('LOG_EXTRA', '').split(',')

class JsonFormatter(logging.Formatter):
    def format(self, record):
        log_record = {
            'name': record.name,
            'msg': record.getMessage(),
            'levelname': record.levelname,
            'levelno': record.levelno,
            'pathname': record.pathname,
            'filename': record.filename,
            'module': record.module,
            'lineno': record.lineno,
            'funcName': record.funcName,
            'created': record.created,
            'msecs': record.msecs,
            'relativeCreated': record.relativeCreated,
            'thread': record.thread,
            'threadName': record.threadName,
            'processName': record.processName,
            'process': record.process,
            'hostname': socket.gethostname(),
            'pid': record.process
        }
        for extra in LOG_EXTRA:
            log_record[extra] = getattr(record, extra, None)
            
        return json.dumps(log_record)

# Configurazione del logger
logger = logging.getLogger('logtest')
logger.setLevel(LOG_LEVEL)

# Handler per log in formato JSON
json_handler = logging.StreamHandler(sys.stdout)
json_handler.setFormatter(JsonFormatter())

# Handler per log leggibile
human_readable_handler = logging.StreamHandler(sys.stdout)
human_formatter = logging.Formatter(
    LOG_PATTERN
)
human_readable_handler.setFormatter(human_formatter)

# Aggiungere gli handler al logger
if LOG_FORMAT == 'json':
    logger.addHandler(json_handler)
else:
    logger.addHandler(human_readable_handler)