/**
 * AI-OS Phase 4 — HOOKS_COHORT regression (R8-001 / R8-002 / R8-003).
 *
 * Bug (R8-001): hook install/verify/uninstall was gated on LAUNCH_COHORT
 * (all 7 tools), but at the time only @waggle/hive-mind-hooks-claude-code
 * shipped a `bin`; the other hook packages were Wave 2/3 `export {}` stubs
 * with no bin, so `npx @waggle/hive-mind-hooks-<id>` ALWAYS failed for the
 * user. HOOKS_COHORT fixed this by gating hook actions on the tools whose
 * package actually ships a bin. The cohort has since grown as Tier-A/B
 * packages landed (claude-code, claude-desktop, codex, codex-desktop, cursor,
 * hermes, openclaw).
 *
 * The existing tool-launcher tests mock execCapture and only assert the
 * npx command SHAPE, so the binless-stub failure was invisible. These
 * are STATIC tests that:
 *   1. ground HOOKS_COHORT against the real on-disk hook packages
 *      (a tool is hook-capable iff its package.json declares a bin),
 *   2. prove runHookCommand REFUSES unsupported tools without invoking exec,
 *   3. prove the real targets still route through.
 */

import { describe, it, expect } from 'vitest';
import { readFileSync } from 'node:fs';
import { fileURLToPath } from 'node:url';
import { dirname, join } from 'node:path';
import {
  runHookCommand,
  HOOKS_COHORT,
  type HookRuntimePaths,
  type ToolLauncherDeps,
} from '../src/tool-launcher.js';
import { SUPPORTED_TOOLS, LAUNCH_COHORT, type ToolId } from '@waggle/shared';

// packages/agent/tests → packages/
const PACKAGES_DIR = join(dirname(fileURLToPath(import.meta.url)), '..', '..');

function hookPackageHasBin(id: ToolId): boolean {
  const pkgPath = join(PACKAGES_DIR, `hive-mind-hooks-${id}`, 'package.json');
  const pkg = JSON.parse(readFileSync(pkgPath, 'utf8')) as { bin?: unknown };
  return pkg.bin != null && Object.keys(pkg.bin as object).length > 0;
}

function runtimeFor(id: ToolId): HookRuntimePaths {
  return {
    nodePath: '/resources/node',
    cliEntry: '/resources/node_modules/@waggle/hive-mind-cli/dist/index.js',
    hookEntry: `/resources/node_modules/@waggle/hive-mind-hooks-${id}/dist/bin/hooks.js`,
  };
}

describe('HOOKS_COHORT grounding (R8-001)', () => {
  it('contains ONLY tools whose hook package ships a real bin', () => {
    for (const id of HOOKS_COHORT) {
      expect(
        hookPackageHasBin(id),
        `${id} is in HOOKS_COHORT but its hook package has no bin`,
      ).toBe(true);
    }
  });

  it('contains every tool that DOES ship a real hook bin (no real target dropped)', () => {
    const realTargets = SUPPORTED_TOOLS.filter((id) => hookPackageHasBin(id));
    expect([...HOOKS_COHORT].sort()).toEqual([...realTargets].sort());
  });

  it('matches the current real-bin cohort (snapshot tripwire)', () => {
    expect([...HOOKS_COHORT].sort()).toEqual(['claude-code', 'claude-desktop', 'codex', 'codex-desktop', 'cursor', 'hermes', 'openclaw']);
  });

  it('is a subset of LAUNCH_COHORT (all hook targets are launchable)', () => {
    for (const id of HOOKS_COHORT) {
      expect(LAUNCH_COHORT).toContain(id);
    }
    expect(HOOKS_COHORT.length).toBeLessThanOrEqual(LAUNCH_COHORT.length);
  });
});

describe('runHookCommand refuses unsupported tools (R8-002)', () => {
  it('does not invoke exec for an unsupported tool id', async () => {
    const fakeId = 'not-a-real-tool' as ToolId;
    let invoked = false;
    const execCapture: NonNullable<ToolLauncherDeps['execCapture']> = async () => {
      invoked = true;
      return { stdout: 'ok', stderr: '', code: 0 };
    };

    const result = await runHookCommand({
      id: fakeId,
      action: 'install',
      deps: { execCapture },
    });

    expect(result.ok).toBe(false);
    expect(result.error).toContain('not supported');
    expect(invoked).toBe(false);
  });
});

describe('runHookCommand still routes the real target (regression guard)', () => {
  it('invokes the packaged bin for claude-code install', async () => {
    const calls: string[][] = [];
    const execCapture: NonNullable<ToolLauncherDeps['execCapture']> = async (
      _binary,
      args,
    ) => {
      calls.push(args);
      return { stdout: 'Done.', stderr: '', code: 0 };
    };
    const result = await runHookCommand({
      id: 'claude-code',
      action: 'install',
      runtime: runtimeFor('claude-code'),
      deps: { execCapture },
    });
    expect(result.ok).toBe(true);
    expect(calls).toHaveLength(1);
    expect(calls[0]).toEqual([
      runtimeFor('claude-code').hookEntry,
      'install',
      '--cli-path',
      runtimeFor('claude-code').cliEntry,
    ]);
  });
});