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package cmcp

import (
	"fmt"
	"net/http"

	"github.com/mark3labs/mcp-go/mcp"
	"github.com/pkg/errors"

	"{{{ .Package }}}/app"
	"{{{ .Package }}}/app/controller"
	"{{{ .Package }}}/app/controller/cutil"
	"{{{ .Package }}}/app/lib/mcpserver"
	"{{{ .Package }}}/views/vmcp"
)

func MCPTool(w http.ResponseWriter, r *http.Request) {
	controller.Act("mcp.tool", w, r, func(as *app.State, ps *cutil.PageState) (string, error) {
		mcpx, tool, err := mcpTool(r, as, ps)
		if err != nil {
			return "", err
		}
		ps.SetTitleAndData(fmt.Sprintf("MCP Tool [%s]", tool.Name), tool)
		return controller.Render(r, as, &vmcp.ToolDetail{Server: mcpx, Tool: tool}, ps, mcpBreadcrumb, "tool", tool.Name)
	})
}

func MCPToolRun(w http.ResponseWriter, r *http.Request) {
	controller.Act("mcp.tool.run", w, r, func(as *app.State, ps *cutil.PageState) (string, error) {
		mcpx, tool, err := mcpTool(r, as, ps)
		if err != nil {
			return "", err
		}
		frm, err := cutil.ParseForm(r, ps.RequestBody)
		if err != nil {
			return "", err
		}
		ret, err := tool.Fn(ps.Context, as, mcp.CallToolRequest{}, frm, ps.Logger)
		if err != nil {
			return "", err
		}
		ps.SetTitleAndData(fmt.Sprintf("MCP Tool [%s] Result", tool.Name), ret)
		return controller.Render(r, as, &vmcp.ToolDetail{Server: mcpx, Tool: tool, Args: frm, Result: ret}, ps, mcpBreadcrumb, "tool", tool.Name)
	})
}

func mcpTool(r *http.Request, as *app.State, ps *cutil.PageState) (*mcpserver.Server, *mcpserver.Tool, error) {
	toolKey, _ := cutil.PathString(r, "tool", false)
	mcpx, err := mcpserver.GetDefaultServer(ps.Context, as, ps.Logger)
	if err != nil {
		return nil, nil, err
	}
	var tool *mcpserver.Tool
	if toolKey != "" {
		tool = mcpx.Tools.Get(toolKey)
		if tool == nil {
			return nil, nil, errors.Errorf("unable to find tool [%s]", toolKey)
		}
	}
	return mcpx, tool, nil
}