# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
"""
Logging configuration for Doris MCP Server.
"""

import logging
import logging.config
import sys
from pathlib import Path
from typing import Any


def setup_logging(
    level: str = "INFO",
    log_file: str | None = None,
    log_format: str | None = None,
) -> None:
    """
    Setup logging configuration.

    Args:
        level: Logging level (DEBUG, INFO, WARNING, ERROR)
        log_file: Optional log file path
        log_format: Optional custom log format
    """
    if log_format is None:
        log_format = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"

    # Base configuration
    config: dict[str, Any] = {
        "version": 1,
        "disable_existing_loggers": False,
        "formatters": {
            "default": {"format": log_format, "datefmt": "%Y-%m-%d %H:%M:%S"}
        },
        "handlers": {
            "console": {
                "class": "logging.StreamHandler",
                "level": level,
                "formatter": "default",
                "stream": sys.stdout,
            }
        },
        "root": {"level": level, "handlers": ["console"]},
        "loggers": {
            "doris_mcp_server": {
                "level": level,
                "handlers": ["console"],
                "propagate": False,
            }
        },
    }

    # Add file handler if log_file is specified
    if log_file:
        # Ensure log directory exists
        log_path = Path(log_file)
        log_path.parent.mkdir(parents=True, exist_ok=True)

        config["handlers"]["file"] = {
            "class": "logging.handlers.RotatingFileHandler",
            "level": level,
            "formatter": "default",
            "filename": log_file,
            "maxBytes": 10485760,  # 10MB
            "backupCount": 5,
        }

        # Add file handler to root and package loggers
        config["root"]["handlers"].append("file")
        config["loggers"]["doris_mcp_server"]["handlers"].append("file")

    logging.config.dictConfig(config)


def get_logger(name: str) -> logging.Logger:
    """
    Get a logger instance.

    Args:
        name: Logger name

    Returns:
        Logger instance
    """
    return logging.getLogger(name)