package tools

import (
	"context"
	"encoding/json"
	"fmt"

	"github.com/mark3labs/mcp-go/mcp"
	"github.com/mark3labs/mcp-go/server"

	"fwh-toolbox-server/services"
)

func RegisterShutdownTools(s *server.MCPServer) {
	s.AddTool(
		mcp.NewTool("query_shutdown_statistics",
			mcp.WithDescription("查询停机统计数据（按日期汇总停机站点信息）"),
			mcp.WithString("date", mcp.Description("统计日期，格式 yyyy-MM-dd（不传则查最新）")),
		),
		handleQueryShutdownStatistics,
	)
}

func handleQueryShutdownStatistics(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
	date := req.GetString("date", "")

	var datePtr *string
	if date != "" {
		datePtr = &date
	}

	data, err := services.GetShutdownStatistics(datePtr)
	if err != nil {
		return mcp.NewToolResultError(fmt.Sprintf("查询停机统计失败: %v", err)), nil
	}

	jsonBytes, _ := json.MarshalIndent(data, "", "  ")
	return mcp.NewToolResultText(string(jsonBytes)), nil
}