"""
Infinity 向量数据库适配器

封装现有的 InfinityClient，实现 VectorDBClient 接口。
"""

from typing import Dict, Any, List, Optional
from .base import VectorDBClient
from src.utils.infinity import InfinityClient, get_client as get_infinity_client, close_client as close_infinity_client
from src.conf.settings import vector_db_settings


class InfinityAdapter(VectorDBClient):
    """
    Infinity 向量数据库适配器
    
    将现有的 InfinityClient 封装为统一的 VectorDBClient 接口。
    """
    
    def __init__(
        self,
        database: Optional[str] = None,
        host: Optional[str] = None,
        port: Optional[int] = None,
        min_connections: int = 5,
        max_connections: int = 10
    ):
        """
        初始化 Infinity 适配器
        
        Args:
            database: 数据库名称
            host: Infinity 服务地址
            port: Infinity 服务端口
            min_connections: 最小连接数
            max_connections: 最大连接数
        """
        self._database = database or vector_db_settings.infinity_database
        self._host = host or vector_db_settings.infinity_host
        self._port = port or vector_db_settings.infinity_sdk_port
        self._min_connections = min_connections
        self._max_connections = max_connections
        
        # 获取底层 InfinityClient
        self._client: InfinityClient = get_infinity_client(
            host=self._host,
            port=self._port,
            database=self._database,
            min_connections=self._min_connections,
            max_connections=self._max_connections
        )
    
    @property
    def client(self) -> InfinityClient:
        """获取底层 InfinityClient"""
        return self._client
    
    def search(
        self,
        table_name: str,
        output_fields: List[str],
        query: Dict[str, Any],
        database_name: Optional[str] = None
    ) -> Any:
        """全文搜索"""
        return self._client.search(table_name, output_fields, query, database_name)
    
    def vector_search(
        self,
        table_name: str,
        output_fields: List[str],
        query: Dict[str, Any],
        database_name: Optional[str] = None
    ) -> Any:
        """向量搜索"""
        return self._client.vector_search(table_name, output_fields, query, database_name)
    
    def hybrid_search(
        self,
        table_name: str,
        output_fields: List[str],
        query: Dict[str, Any],
        database_name: Optional[str] = None
    ) -> Any:
        """混合搜索"""
        return self._client.hybrid_search(table_name, output_fields, query, database_name)
    
    def insert(
        self,
        table_name: str,
        documents: List[Dict[str, Any]],
        database_name: Optional[str] = None
    ) -> Any:
        """插入文档"""
        return self._client.insert(table_name, documents, database_name)
    
    def update(
        self,
        table_name: str,
        cond: str,
        data: Dict[str, Any],
        database_name: Optional[str] = None
    ) -> Any:
        """更新文档"""
        return self._client.update(table_name, cond, data, database_name)
    
    def get_status(self) -> Dict[str, Any]:
        """获取客户端状态"""
        return self._client.get_status()
    
    def close(self):
        """关闭客户端连接"""
        close_infinity_client(self._database)
    
    # ========== Infinity 特有方法（扩展） ==========
    
    def list_databases(self) -> List[str]:
        """获取所有数据库"""
        return self._client.list_databases()
    
    def list_tables(self, database_name: Optional[str] = None) -> List[str]:
        """获取所有表"""
        return self._client.list_tables(database_name)
    
    def create_table(
        self,
        table_name: str,
        columns_definition: List[Dict[str, Any]],
        database_name: Optional[str] = None
    ):
        """创建表"""
        return self._client.create_table(table_name, columns_definition, database_name=database_name)
    
    def drop_table(self, table_name: str, database_name: Optional[str] = None):
        """删除表"""
        return self._client.drop_table(table_name, database_name)
    
    def create_index(
        self,
        table_name: str,
        index_name: str,
        index_info: Dict[str, Any],
        database_name: Optional[str] = None
    ):
        """创建索引"""
        return self._client.create_index(table_name, index_name, index_info, database_name)