from langchain.agents import create_agent

from src.agents.common import BaseAgent, load_chat_model
from src.agents.common.toolkits.mysql import get_mysql_tools
from src.services.mcp_service import get_mcp_tools
from src.utils import logger


class SqlReporterAgent(BaseAgent):
    name = "数据库报表助手"
    description = "一个能够生成 SQL 查询报告的智能体助手。同时调用 Charts MCP 生成图表。"

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

    async def get_tools(self):
        mysql_tools = get_mysql_tools()
        chart_tools = await get_mcp_tools("mcp-server-chart")
        return mysql_tools + chart_tools

    async def get_graph(self, **kwargs):
        if self.graph:
            return self.graph

        context = self.context_schema.from_file(module_name=self.module_name)

        # 创建 SqlReporterAgent
        graph = create_agent(
            model=load_chat_model(context.model),  # 使用 context 中的模型配置
            system_prompt=context.system_prompt,
            tools=await self.get_tools(),
            checkpointer=await self._get_checkpointer(),
        )

        self.graph = graph
        logger.info("SqlReporterAgent 构建成功")
        return graph