import { describe, it, expect } from 'vitest';
import { execFileSync } from 'node:child_process';
import { existsSync } from 'node:fs';
import { join } from 'node:path';
import { fileURLToPath } from 'node:url';
import { loadManifest, resolveOwnership, frameworkSubtreeRoots } from './manifest.js';

/**
 * Bash ↔ TS parity (#791, §6.1).
 *
 * The installer (bash) and the config adapter (TS) each resolve path ownership
 * from framework-manifest.txt. If the two resolvers disagreed on a single path,
 * an upgrade could protect a file on one code path and wipe it on the other —
 * exactly the two-copies drift that #631 patched by hand. This test drives the
 * bash resolver (`tools/_lib/manifest.sh`) as a subprocess and asserts it agrees
 * with the TS resolver for a broad set of paths spanning every ownership class.
 */

const FRAMEWORK_ROOT = fileURLToPath(new URL('../../framework', import.meta.url));
const MANIFEST_SH = join(FRAMEWORK_ROOT, 'tools', '_lib', 'manifest.sh');

const hasBash = (() => {
  try {
    execFileSync('bash', ['-c', 'true'], { stdio: 'ignore' });
    return true;
  } catch {
    return false;
  }
})();

function bashResolve(relPath: string): string {
  return execFileSync('bash', [MANIFEST_SH, 'resolve', relPath], {
    encoding: 'utf-8',
  }).trim();
}

function bashSubtreeRoots(): string[] {
  return execFileSync('bash', [MANIFEST_SH, 'subtree-roots'], { encoding: 'utf-8' })
    .split('\n')
    .map((s) => s.trim())
    .filter((s) => s.length > 0);
}

// Paths spanning every ownership class: framework single-files, framework
// subtrees, operator declared trees, operator carve-out inside a framework
// subtree, local overlays, and deliberately UNANTICIPATED paths (fail-safe).
const PROBE_PATHS = [
  'CONSTITUTION.md',
  'AGENTS.md',
  'STANDARDS.md',
  'install.sh',
  'framework-manifest.txt',
  'guides/E2E-DELIVERY.md',
  'tools/git/pr-create.sh',
  'tools/_lib/manifest.sh',
  'defaults/SOUL.md',
  'fleet/README.md',
  'fleet/roles/coder.md',
  'fleet/roster.schema.json',
  'fleet/examples/general.yaml',
  // operator
  'SOUL.md',
  'USER.md',
  'TOOLS.md',
  'SOUL.local.md',
  'USER.local.md',
  'STANDARDS.local.md',
  'agents/coder0.conf',
  'policy/custom.md',
  'memory/note.md',
  'sources/skills/x.md',
  'credentials/c.json',
  'tools/_lib/credentials.json',
  'fleet/roster.yaml',
  'fleet/roster.json',
  'fleet/agents/coder0.env',
  'fleet/run/coder0.hb',
  'fleet/backlog/data.db',
  'fleet/roles.local/custom.md',
  // unanticipated → operator (fail-safe)
  'harvester/sop.md',
  'unknown-operator-dir/x',
  'fleet/my-fleet.yaml',
  'random-root-file.md',
  'tools/some-new-framework-tool.sh',
];

describe.skipIf(!hasBash)('bash ↔ TS manifest parity (§6.1)', () => {
  it('the bash resolver CLI exists and is executable', () => {
    expect(existsSync(MANIFEST_SH)).toBe(true);
  });

  it('bash and TS resolve identical ownership for every probe path', () => {
    const manifest = loadManifest(FRAMEWORK_ROOT);
    const disagreements: Array<{ path: string; ts: string; bash: string }> = [];
    for (const p of PROBE_PATHS) {
      const ts = resolveOwnership(manifest, p);
      const bash = bashResolve(p);
      if (ts !== bash) disagreements.push({ path: p, ts, bash });
    }
    expect(disagreements).toEqual([]);
  });

  it('bash and TS agree on the framework subtree roots', () => {
    const manifest = loadManifest(FRAMEWORK_ROOT);
    expect(bashSubtreeRoots().sort()).toEqual(frameworkSubtreeRoots(manifest).sort());
  });
});