import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { McpError, ErrorCode } from "@modelcontextprotocol/sdk/types.js";
import { z } from "zod";
import { TOOL_NAME, TOOL_DESCRIPTION, TOOL_PARAMS } from "./generateSitemapToolParams.js"; // Use new params file
import { GenerateSitemapService } from "../services/GenerateSitemapService.js"; // Use new service file
// import { GenerateSitemapArgs } from "../types/generateSitemapTypes.js"; // Args type defined below
import { ValidationError, ServiceError } from "../utils/index.js";
import { logger } from "../utils/index.js";
// Define the type for the arguments based on TOOL_PARAMS
type GenerateSitemapToolArgs = z.infer<z.ZodObject<typeof TOOL_PARAMS>>;
/**
* Registers the generate-site-map tool with the MCP server.
* Acts as an adapter between the MCP server and the GenerateSitemapService.
*
* @param server - MCP server instance to register the tool with.
* @param config - Optional configuration for the GenerateSitemapService (currently unused).
*/
export const generateSitemapTool = (server: McpServer, config?: any /* Replace 'any' with specific config type */): void => {
const serviceInstance = new GenerateSitemapService();
/**
* Processes the generate-site-map tool request.
* @param args - The arguments object matching TOOL_PARAMS.
*/
const processRequest = async (args: GenerateSitemapToolArgs) => {
// Zod handles defaults for maxDepth and limit
const { url, maxDepth, limit } = args;
logger.debug(`Received ${TOOL_NAME} request`, { url, maxDepth, limit });
try {
// Call the service method
const result = await serviceInstance.generateSitemap(url, maxDepth, limit);
// Format the successful output for MCP - return XML content
return {
content: [{
type: "text" as const, // Could also use 'application/xml' if client supports it
text: result.sitemapXml
}]
// Optionally include urlCount in metadata if needed/supported
};
} catch (error) {
const logContext = {
args,
errorDetails: error instanceof Error ? { name: error.name, message: error.message, stack: error.stack } : String(error)
};
logger.error(`Error processing ${TOOL_NAME}`, logContext);
// Map service-specific errors to McpError
if (error instanceof ValidationError) {
throw new McpError(ErrorCode.InvalidParams, `Validation failed: ${error.message}`, error.details);
}
if (error instanceof ServiceError) {
throw new McpError(ErrorCode.InternalError, error.message, error.details);
}
if (error instanceof McpError) {
throw error; // Re-throw existing McpErrors
}
// Catch-all for unexpected errors
throw new McpError(
ErrorCode.InternalError,
error instanceof Error ? `An unexpected error occurred in ${TOOL_NAME}: ${error.message}` : `An unexpected error occurred in ${TOOL_NAME}.`
);
}
};
// Register the tool
server.tool(
TOOL_NAME,
TOOL_DESCRIPTION,
TOOL_PARAMS,
processRequest
);
logger.info("Tool registered", { toolName: TOOL_NAME });
};