import descopeSdk from '@descope/node-sdk';

import type { AuthInfo } from '@modelcontextprotocol/server';

import { createMcpHandler, withMcpAuth } from 'mcp-handler';

import { TrustEngine } from '../packages/core/src/index.js';

import { registerOpenClaspTools } from '../packages/mcp-server/src/server.js';

const engine = new TrustEngine();

const mcp = createMcpHandler((server) => registerOpenClaspTools(server, engine), {

  serverInfo: { name: 'openclasp', version: '0.1.0' },

  instructions:

    'OpenClasp provides identity, interaction assurance, private clues, receipts, and contextual behavioural history. Never submit raw private conversations.',

});

async function verifyToken(_request: Request, bearerToken?: string): Promise<AuthInfo | undefined> {

  const projectId = process.env.DESCOPE_PROJECT_ID ?? process.env.NEXT_PUBLIC_DESCOPE_PROJECT_ID;

  if (!projectId || !bearerToken) return undefined;

  const descope = descopeSdk({ projectId });

  const authentication = await descope.validateSession(bearerToken, {

    ...(process.env.OPENCLASP_MCP_URL ? { audience: process.env.OPENCLASP_MCP_URL } : {}),

  });

  if (!authentication.token.exp) return undefined;

  return {

    token: bearerToken,

    clientId: authentication.token.sub ?? 'unknown-client',

    scopes: descope.getJwtPermissions(bearerToken),

    expiresAt: authentication.token.exp,

  };

}

const handler = withMcpAuth(mcp, verifyToken, {

  required: true,

  requiredScopes: ['profile:read'],

  resourceMetadataPath: '/.well-known/oauth-protected-resource',

  ...(process.env.OPENCLASP_MCP_URL

    ? { resourceUrl: new URL(process.env.OPENCLASP_MCP_URL).origin }

    : {}),

});

export { handler as GET, handler as POST };