Weiming Zhang

"""
Logging utilities and shared enums for REDB.

Contains the ImportResult enum, log formatters, and logger setup functions
used across the ingestor pipeline.
"""
import logging
from logging.handlers import QueueHandler
import os
from enum import Enum


class ImportResult(Enum):
    CORRECTLY = 0
    PARTIALLY = 1
    FAILED = 2
    PENDING = 3
    SKIPPED = 4


class FileNameFormatter(logging.Formatter):
    def format(self, record):
        record.filenameinfo = getattr(record, "filenameinfo", "unknown")
        return super().format(record)


def setup_logger(log_queue, filename):
    logger = logging.getLogger(filename)
    if not logger.handlers:
        if os.getenv("SERVER_ENV") == "prod":
            logger.setLevel(logging.INFO)
        else:
            logger.setLevel(logging.DEBUG)
        handler = QueueHandler(log_queue)
        logger.addHandler(handler)
        logger.propagate = False  # Prevent propagation to parent loggers
    return logger


def logger_thread(log_queue, log_file):
    handler = logging.FileHandler(log_file)
    formatter = FileNameFormatter(
        "%(asctime)s - %(filenameinfo)s - %(levelname)s - %(message)s"
    )
    handler.setFormatter(formatter)

    while True:
        try:
            record = log_queue.get()
            if record is None:
                break
            # Format and write the log record
            message = formatter.format(record)
            handler.stream.write(message + "\n")
            handler.stream.flush()
        except Exception:
            import traceback
            import sys

            print("[ERR] Error in logger thread:", file=sys.stderr)
            traceback.print_exc(file=sys.stderr)


def setup_direct_logger(log_file, filename, pid=None):
    """Setup a logger that writes directly to the log file without using a queue."""
    # Create a unique logger name using the process ID
    logger_name = f"{filename}_{pid}" if pid else filename
    logger = logging.getLogger(logger_name)

    if not logger.handlers:
        handler = logging.FileHandler(log_file)
        formatter = logging.Formatter("%(asctime)s - %(filenameinfo)s - %(levelname)s - %(message)s")
        handler.setFormatter(formatter)
        logger.addHandler(handler)

        if os.getenv("SERVER_ENV") == "prod":
            logger.setLevel(logging.INFO)
        else:
            logger.setLevel(logging.DEBUG)

    # Add filename info to the logger's extra info
    extra = {"filenameinfo": filename}
    logger = logging.LoggerAdapter(logger, extra)

    return logger