/**
 * Trust Model Last-Mile Wiring Tests
 *
 * Validates that:
 * 1. InstallAuditStore is instantiated and wired at runtime
 * 2. Install operations record audit entries in the .mind DB
 * 3. Existing non-trust approvals remain backward-compatible
 */

import { describe, it, expect, beforeAll, afterAll } from 'vitest';
import fs from 'node:fs';
import path from 'node:path';
import os from 'node:os';
import Database from 'better-sqlite3';
import { MindDB } from '@waggle/core';
import { buildLocalServer } from '../../src/local/index.js';
import type { FastifyInstance } from 'fastify';
import { injectWithAuth } from '../test-utils.js';

describe('Trust Model Runtime Wiring', () => {
  let server: FastifyInstance;
  let tmpDir: string;

  beforeAll(async () => {
    tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'waggle-trust-wire-'));

    // Create personal.mind
    const personalPath = path.join(tmpDir, 'personal.mind');
    const mind = new MindDB(personalPath);
    mind.close();

    // Create skills dir with marker to prevent auto-install of starter skills
    const skillsDir = path.join(tmpDir, 'skills');
    fs.mkdirSync(skillsDir, { recursive: true });
    fs.writeFileSync(path.join(skillsDir, '.starter-installed'), 'test');

    server = await buildLocalServer({ dataDir: tmpDir });
  });

  afterAll(async () => {
    await server.close();
    fs.rmSync(tmpDir, { recursive: true, force: true });
  });

  describe('Audit store wiring', () => {
    it('install_audit table exists after server startup', () => {
      const personalPath = path.join(tmpDir, 'personal.mind');
      const db = new Database(personalPath);
      const table = db.prepare(
        "SELECT name FROM sqlite_master WHERE type='table' AND name='install_audit'",
      ).get() as { name: string } | undefined;
      db.close();
      expect(table).toBeDefined();
      expect(table!.name).toBe('install_audit');
    });

    it('installing a starter skill creates audit entries', async () => {
      // Remove skill if auto-installed, then install fresh
      await injectWithAuth(server, { method: 'DELETE', url: '/api/skills/brainstorm' });
      const res = await injectWithAuth(server, {
        method: 'POST',
        url: '/api/skills/starter-pack/brainstorm',
      });
      expect(res.statusCode).toBe(200);

      // Check audit trail — read through the server's own auditStore (the
      // writer connection). A fresh better-sqlite3 reader can miss WAL rows the
      // server hasn't checkpointed, which is flaky across platforms/boot timing.
      const entries = server.auditStore.getByCapability('brainstorm');

      // API route records 1 installed entry (agent tool path records approved + installed)
      expect(entries.length).toBeGreaterThanOrEqual(1);
      expect(entries.some(e => e.action === 'installed')).toBe(true);

      // Verify trust metadata is populated
      const installed = entries.find(e => e.action === 'installed')!;
      expect(installed.risk_level).toBe('low');
      expect(installed.trust_source).toBe('starter_pack');
      expect(installed.approval_class).toBe('standard');
      expect(installed.initiator).toBe('user');
      expect(installed.detail).toContain('Install Center');
    });

    it('failed install records audit entry', async () => {
      const res = await injectWithAuth(server, {
        method: 'POST',
        url: '/api/skills/starter-pack/nonexistent-xyz',
      });
      expect(res.statusCode).toBe(404);

      // The API route handler returns 404, but the skill-tools install_capability
      // path records failures. Check if any failed entries exist.
      // Read through the server's writer connection (avoids the cross-connection
      // WAL visibility race a fresh reader hits).
      const total = server.auditStore.getAll().length;
      // At least the brainstorm entry from the previous test should exist
      expect(total).toBeGreaterThanOrEqual(1);
    });

    it('duplicate install does not create new audit entries', async () => {
      const personalPath = path.join(tmpDir, 'personal.mind');
      const db1 = new Database(personalPath);
      const before = (db1.prepare("SELECT count(*) as c FROM install_audit").get() as { c: number }).c;
      db1.close();

      // Try to install already-installed skill
      const res = await injectWithAuth(server, {
        method: 'POST',
        url: '/api/skills/starter-pack/brainstorm',
      });
      expect(res.statusCode).toBe(409);

      const db2 = new Database(personalPath);
      const after = (db2.prepare("SELECT count(*) as c FROM install_audit").get() as { c: number }).c;
      db2.close();

      // Server route handles duplicate before reaching skill-tools,
      // so no new audit entries should be created via the API route
      expect(after).toBe(before);
    });
  });

  describe('Audit REST endpoint', () => {
    it('GET /api/audit/installs returns recent install events', async () => {
      // brainstorm was already installed in the previous test block
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/api/audit/installs',
      });
      expect(res.statusCode).toBe(200);
      const body = JSON.parse(res.body);
      expect(body.entries).toBeDefined();
      expect(body.entries.length).toBeGreaterThan(0);
      expect(body.entries[0].capabilityName).toBeDefined();
      expect(body.entries[0].riskLevel).toBeDefined();
      expect(body.entries[0].action).toBeDefined();
      expect(body.entries[0].trustSource).toBeDefined();
      expect(body.entries[0].timestamp).toBeDefined();
    });

    it('respects limit parameter', async () => {
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/api/audit/installs?limit=1',
      });
      expect(res.statusCode).toBe(200);
      const body = JSON.parse(res.body);
      expect(body.entries.length).toBeLessThanOrEqual(1);
    });

    it('caps limit at 100', async () => {
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/api/audit/installs?limit=999',
      });
      expect(res.statusCode).toBe(200);
      // Just verify it doesn't error — the cap is internal
      const body = JSON.parse(res.body);
      expect(body.entries).toBeDefined();
    });
  });

  describe('Backward compatibility', () => {
    it('starter-pack catalog still works', async () => {
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/api/skills/starter-pack/catalog',
      });
      expect(res.statusCode).toBe(200);
      const body = JSON.parse(res.body);
      expect(body.skills).toBeDefined();
      expect(body.skills.length).toBeGreaterThan(0);
    });

    it('capabilities status endpoint still works', async () => {
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/api/capabilities/status',
      });
      expect(res.statusCode).toBe(200);
      const body = JSON.parse(res.body);
      expect(body.skills).toBeDefined();
    });

    it('health endpoint still works', async () => {
      const res = await injectWithAuth(server, {
        method: 'GET',
        url: '/health',
      });
      expect(res.statusCode).toBe(200);
      const body = JSON.parse(res.body);
      expect(body.mode).toBe('local');
    });
  });
});