import json
import os
from typing import Dict, Any, List


class TemplateConfigManager:
    def __init__(self, config_path: str = "config/template_config.json"):
        self.config_path = config_path
        self.config = self._load_config()

    def _load_config(self) -> Dict[str, Any]:
        """加载配置文件"""
        if os.path.exists(self.config_path):
            try:
                with open(self.config_path, "r", encoding="utf-8") as f:
                    return json.load(f)
            except Exception as e:
                print(f"加载配置文件失败: {e}")
                return {"template_extensions": {}}
        return {"template_extensions": {}}

    def get_template_config(self, template_name: str) -> Dict[str, Any]:
        """获取指定模板的配置，并过滤空白值"""
        template_config = self.config.get("template_extensions", {}).get(
            template_name, {}
        )
        return self._filter_empty_values(template_config)

    def _filter_empty_values(self, config: Dict[str, Any]) -> Dict[str, Any]:
        """过滤掉空白值（空列表、空字符串等）"""
        filtered = {}

        for key, value in config.items():
            if isinstance(value, dict):
                # 递归处理嵌套字典
                filtered_subdict = self._filter_empty_values(value)
                if filtered_subdict:  # 只添加非空的子字典
                    filtered[key] = filtered_subdict
            elif isinstance(value, list):
                # 过滤空列表和非空字符串元素
                filtered_list = [item for item in value if item and str(item).strip()]
                if filtered_list:  # 只添加非空列表
                    filtered[key] = filtered_list
            elif isinstance(value, str) and value.strip():
                # 只添加非空字符串
                filtered[key] = value
            elif value:  # 其他非空值（数字、布尔值等）
                filtered[key] = value

        return filtered