/**
 * DC-166 r2 (judge round 1 blocking demand): resolve the mounted
 * method+path for the DC-166 MCP tool calls — no substring greps.
 *
 * SCOPE (merge-judge r1 blocker, urn:ump:2jdpii43xlasarlxl2jug64xab465xnzzbdt3bnd4fbr7y23l26q):
 * this verifier covers the 11 NEW DC-166 tools (12 requests — security-summary
 * fans out) — NOT the whole 28-tool catalog. The 17 pre-existing tools are
 * resolved against declared routes by the follow-up MCP truth batch
 * (audit 2026-10-27 #40: extend to every tool + fail on any unresolved path).
 *
 * Layer 1 (composition): boots the routers whose dependency surface can be
 *   satisfied in-process (workflows — the one the judge flagged) and
 *   dispatches synthetic requests, asserting the composed path from the
 *   MCP tool reaches the intended handler (sentinel body), plus ordering
 *   (literal /history vs /:id/history).
 * Layer 2 (exact table): each covered tool call's (method, path) is resolved
 *   against the route declarations extracted from the owning route file
 *   (router.<method>('<path>') with the mount prefix from src/app.js) —
 *   an exact normalized match, so a double prefix or wrong method fails.
 */

'use strict';

const express = require('express');
const fs = require('fs');
const path = require('path');

const API = path.join(__dirname, '..', '..');

// ── exact expected contract for each DC-166 tool call ────────────────
// (method, full path the tool's apiCall produces) -> (mount, route file,
//  relative route decl expected AFTER prefix-stripping)
const EXPECTED = [
  { method: 'GET', path: '/api/v1/calendar/events', mount: '/calendar', file: 'routes/calendar.js', rel: '/events' },
  { method: 'POST', path: '/api/v1/calendar/sources', mount: '/calendar', file: 'routes/calendar.js', rel: '/sources' },
  { method: 'GET', path: '/api/v1/security/events', mount: '/security', file: 'routes/security.js', rel: '/events' },
  { method: 'GET', path: '/api/v1/security/events/stats', mount: '/security', file: 'routes/security.js', rel: '/events/stats' },
  { method: 'GET', path: '/api/v1/security/events/perimeter', mount: '/security', file: 'routes/security.js', rel: '/events/perimeter' },
  { method: 'GET', path: '/api/v1/license/status', mount: '/license', file: 'routes/license.js', rel: '/status' },
  { method: 'GET', path: '/api/v1/capabilities', mount: 'BARE', file: 'routes/capabilities.js', rel: '/' },
  { method: 'POST', path: '/api/v1/dns/record', mount: '/dns', file: 'routes/dns.js', rel: '/record' },
  { method: 'DELETE', path: '/api/v1/dns/record', mount: '/dns', file: 'routes/dns.js', rel: '/record' },
  { method: 'POST', path: '/api/v1/recipes/deploy', mount: '/recipes', file: 'routes/recipes/deploy.js', rel: '/deploy' },
  { method: 'POST', path: '/api/v1/workflows/disk-space-alert/run', mount: '/workflows', file: 'routes/workflows.js', rel: '/:workflowId/run' },
  { method: 'GET', path: '/api/v1/tailscale/status', mount: '/tailscale', file: 'routes/tailscale.js', rel: '/status' },
];

function extractRoutes(file) {
  const src = fs.readFileSync(path.join(API, file), 'utf8');
  const out = [];
  for (const raw of src.split('\n')) {
    const line = raw.trim();
    if (line.startsWith('//') || line.startsWith('*')) continue; // skip comments
    for (const m of raw.matchAll(/router\.(get|post|put|delete|patch)\(\s*'([^']*)'/g)) {
      out.push({ method: m[1].toUpperCase(), rel: m[2] || '/' });
    }
  }
  return out;
}

function normalize(p) {
  return p.replace(/\/index$/, '') || '/';
}

describe('DC-166 r2: exact (method, path) resolution — no double prefixes', () => {
  test('app.js really mounts every prefix the table claims', () => {
    const appSrc = fs.readFileSync(path.join(API, 'src/app.js'), 'utf8');
    for (const e of EXPECTED) {
      if (e.mount === 'BARE') {
        expect(appSrc).toMatch(/apiRouter\.use\(capabilitiesRoute\.buildRouter\(\)\)/);
      } else {
        expect(appSrc).toContain(`apiRouter.use('${e.mount}'`);
      }
    }
  });

  test('every MCP tool path resolves exactly to a declared route (method+pattern)', () => {
    const segMatch = (decl, segs) => {
      const parts = decl.split('/').filter(Boolean);
      if (parts.length !== segs.length) return false;
      return parts.every((p, i) => p.startsWith(':') || p === segs[i]);
    };
    for (const e of EXPECTED) {
      const routes = extractRoutes(e.file).map((r) => ({ ...r, rel: normalize(r.rel) }));
      const base = `/api/v1${e.mount === 'BARE' ? '' : e.mount}`;
      const segs = e.path.slice(base.length).split('/').filter(Boolean);
      const relForErr = '/' + segs.join('/');
      const hit = routes.find((r) => r.method === e.method && segMatch(r.rel, segs));
      expect(hit || { tool_path: e.path, wanted: `${e.method} ${relForErr}`, declared: routes }).toBeDefined();
      expect(hit).toBeDefined();
    }
  });

  test('workflows history ordering: /history before /:workflowId/history', () => {
    const routes = extractRoutes('routes/workflows.js');
    const allIdx = routes.findIndex((r) => r.rel === '/history');
    const idIdx = routes.findIndex((r) => r.rel === '/:workflowId/history');
    expect(allIdx).toBeGreaterThan(-1);
    expect(idIdx).toBeGreaterThan(allIdx);
  });

  test('no route file in the table double-prefixes its own mount', () => {
    for (const e of EXPECTED) {
      for (const r of extractRoutes(e.file)) {
        const first = (r.rel || '/').split('/').filter(Boolean)[0];
        const mountName = e.mount.replace('/', '');
        if (e.mount !== 'BARE' && first && first === mountName) {
          throw new Error(`${e.file} declares ${r.method} ${r.rel} — double prefix under ${e.mount}`);
        }
      }
    }
  });
});

describe('DC-166 r2: composition dispatch through the REAL workflows router', () => {
  function buildApp() {
    const app = express();
    app.use(express.json());
    const ah = (fn) => (req, res, next) => Promise.resolve(fn(req, res, next)).catch(next);
    const licenseStub = {
      requirePremium: () => (req, res, next) => next(),
    };
    const ctx = {
      workflowEngine: {
        listWorkflows: () => [{ id: 'w1' }],
        setWorkflowEnabled: (id, on) => ({ id, enabled: on }),
        executeWorkflow: async (id) => ({ id, ran: true }),
        getHistory: (id, limit) => [{ id: id || null, limit }],
      },
      licenseManager: licenseStub,
      asyncHandler: ah,
      ok: (res, data) => res.status(200).json({ success: true, data }),
    };
    app.use('/api/v1/workflows', require('../../routes/workflows')(ctx));
    return app;
  }

  function dispatch(app, method, url) {
    return new Promise((resolve) => {
      const req = { method, url, headers: {} };
      const res = {
        statusCode: 200,
        setHeader() {}, removeHeader() {}, on() {}, writeHead(c) { this.statusCode = c; return this; },
        end(b) { resolve({ status: this.statusCode, body: b ? String(b) : '' }); },
        json(b) { this.end(JSON.stringify(b)); },
        status(c) { this.statusCode = c; return this; },
      };
      app._router.handle(req, res, () => resolve({ status: 404, body: '' }));
    });
  }

  test('MCP-composed POST /api/v1/workflows/:id/run reaches the run handler (judge r1 defect — now fixed)', async () => {
    const r = await dispatch(buildApp(), 'POST', '/api/v1/workflows/w1/run');
    expect(r.status).toBe(200);
    expect(r.body).toContain('"ran":true');
  });

  test('list and both history forms resolve with correct handlers and order', async () => {
    const app = buildApp();
    const list = await dispatch(app, 'GET', '/api/v1/workflows');
    expect(list.body).toContain('"workflows":[');
    const all = await dispatch(app, 'GET', '/api/v1/workflows/history');
    expect(all.body).toContain('"limit":100');
    const one = await dispatch(app, 'GET', '/api/v1/workflows/w1/history');
    expect(one.body).toContain('"limit":50');
  });
});