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https://github.com/SikongJueluo/Mini-Nav.git
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82 lines
2.4 KiB
Python
82 lines
2.4 KiB
Python
"""Configuration manager for unified config."""
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from pathlib import Path
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from typing import Optional
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from .loader import load_yaml, save_yaml
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from .models import Config
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class ConfigManager:
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"""Singleton configuration manager for unified config."""
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_instance: Optional["ConfigManager"] = None
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_config: Optional[Config] = None
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def __new__(cls) -> "ConfigManager":
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"""Singleton pattern - ensure only one instance exists."""
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if cls._instance is None:
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cls._instance = super().__new__(cls)
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return cls._instance
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def __init__(self):
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"""Initialize config manager with config directory and path."""
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self.config_dir = Path(__file__).parent
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self.config_path = self.config_dir / "config.yaml"
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def load(self) -> Config:
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"""Load configuration from config.yaml file.
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Returns:
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Loaded and validated FeatureCompressorConfig instance
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"""
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config = load_yaml(self.config_path, Config)
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self._config = config
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return config
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def get(self) -> Config:
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"""Get loaded configuration, auto-loading if not already loaded.
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Returns:
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FeatureCompressorConfig instance
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Note:
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Automatically loads config if not already loaded
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"""
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# Auto-load if config not yet loaded
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if self._config is None:
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return self.load()
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return self._config
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def save(
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self,
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config: Optional[Config] = None,
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path: Optional[Path] = None,
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) -> None:
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"""Save configuration to YAML file.
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Args:
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config: Configuration to save. If None, saves currently loaded config.
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path: Optional custom path. If None, saves to default config.yaml.
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Raises:
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ValueError: If no configuration loaded and config is None
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"""
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# Use provided config or fall back to loaded config
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if config is None:
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if self._config is None:
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raise ValueError(
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"No configuration loaded. "
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"Cannot save without providing config parameter."
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)
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config = self._config
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# Save to custom path or default config.yaml
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save_path = path if path else self.config_path
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save_yaml(save_path, config)
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self._config = config
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# Global singleton instance
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cfg_manager = ConfigManager()
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