"""
全局日志管理器
"""
from PyQt5.QtCore import QObject, pyqtSignal

# --- 1. 定义信号发射器 ---
class SignalEmitter(QObject):
    log_signal = pyqtSignal(str, str)

# --- 2. 定义 Logger 类 (这是之前缺失的核心) ---
class Logger:
    def __init__(self):
        # 创建信号发射器实例
        self.emitter = SignalEmitter()
        # 连接信号到槽函数
        self.emitter.log_signal.connect(self._on_log_received)
        # 存储回调函数（即日志面板的接收方法）
        self.log_callbacks = []

    def _on_log_received(self, message, level):
        """实际处理日志的地方"""
        for callback in self.log_callbacks:
            callback(message, level)

    def add_listener(self, func):
        """注册日志监听者"""
        self.log_callbacks.append(func)

    def log(self, msg, level="INFO"):
        """供其他模块调用的方法"""
        self.emitter.log_signal.emit(msg, level)

    # 便捷方法
    def info(self, msg):
        self.log(msg, "INFO")

    def debug(self, msg):
        self.log(msg, "DEBUG")

    def warning(self, msg):
        self.log(msg, "WARNING")

    def error(self, msg):
        self.log(msg, "ERROR")

# --- 3. 创建全局实例 ---
# 这行代码必须在类定义之后
logger = Logger()