app/liteyuki/utils/log.py

import sys
import loguru
from typing import TYPE_CHECKING
from .config import load_from_yaml
from .language import Language, get_default_lang, get_system_lang_code

logger = loguru.logger
if TYPE_CHECKING:
    # avoid sphinx autodoc resolve annotation failed
    # because loguru module do not have `Logger` class actually
    from loguru import Logger, Record


def default_filter(record: "Record"):
    """默认的日志过滤器，根据 `config.log_level` 配置改变日志等级。"""
    log_level = record["extra"].get("nonebot_log_level", "INFO")
    levelno = logger.level(log_level).no if isinstance(log_level, str) else log_level
    return record["level"].no >= levelno


# DEBUG日志格式
debug_format: str = (
        "<c>{time:YYYY-MM-DD}</c> <blue>{time:HH:mm:ss}</blue> "
        "<lvl>[{level.icon}]</lvl> "
        "<c><{name}.{module}.{function}:{line}></c> "
        "{message}"
)

# 默认日志格式
default_format: str = (
        "<c>{time:MM-DD}</c> <blue>{time:HH:mm:ss}</blue> "
        "<lvl>[{level.icon}]</lvl> "
        "<c><{name}></c> "
        "{message}"
)


def get_format(level: str) -> str:
    if level == "DEBUG":
        return debug_format
    else:
        return default_format


logger = loguru.logger.bind()


def init_log():
    global logger

    config = load_from_yaml("config.yml")

    logger.remove()
    logger.add(
        sys.stdout,
        level=0,
        diagnose=False,
        filter=default_filter,
        format=get_format(config.get("log_level", "INFO")),
    )
    show_icon = config.get("log_icon", True)
    lang = Language(config.get("default_language", get_system_lang_code()))

    debug = lang.get('log.debug', default="==DEBUG")
    info = lang.get('log.info', default="===INFO")
    success = lang.get('log.success', default="SUCCESS")
    warning = lang.get('log.warning', default="WARNING")
    error = lang.get('log.error', default="==ERROR")

    logger.level("DEBUG", color="<blue>", icon=f"{'*️⃣' if show_icon else ''}{debug}")
    logger.level("INFO", color="<white>", icon=f"{'ℹ️' if show_icon else ''}{info}")
    logger.level("SUCCESS", color="<green>", icon=f"{'✅' if show_icon else ''}{success}")
    logger.level("WARNING", color="<yellow>", icon=f"{'⚠️' if show_icon else ''}{warning}")
    logger.level("ERROR", color="<red>", icon=f"{'⭕' if show_icon else ''}{error}")