// tests/lib/trial-mechanical-fixes.test.mjs
// Mechanical faults from the voyage-lekerepo end-to-end trial (2026-10-06),
// report points 8, 10, 12, 15 and 16. Each test fails on the code the trial
// ran.

import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { spawnSync } from 'node:child_process';
import { mkdirSync, mkdtempSync, readFileSync, rmSync, writeFileSync, existsSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { dirname, join, isAbsolute } from 'node:path';
import { fileURLToPath } from 'node:url';
import { isExplicitApproval } from '../../lib/util/approval-log.mjs';
import { proveRed } from '../../lib/verification/red-proof.mjs';

const HERE = dirname(fileURLToPath(import.meta.url));
const ROOT = join(HERE, '..', '..');
const read = (p) => readFileSync(join(ROOT, p), 'utf8');

// --- 8. the label AskUserQuestion recommends is still an approval -----------

test('approval: «Approve (Recommended)» is the explicit approval it labels', () => {
  for (const a of ['Approve (Recommended)', 'Approve (recommended)', 'Godkjenn (anbefalt)', 'Approve  (Recommended).']) {
    assert.equal(isExplicitApproval(a).approved, true, a);
  }
});

test('approval: the suffix does not turn a hollow answer into a yes', () => {
  for (const a of ['Sounds good (Recommended)', 'Høres bra ut (anbefalt)', '(Recommended)', 'Revise (Recommended)']) {
    assert.equal(isExplicitApproval(a).approved, false, a);
  }
});

// --- 10. the state-file block runs from any working directory ---------------

test('trekexecute Phase 8: the state-file block imports through the plugin root and runs outside it', () => {
  const md = read('commands/trekexecute.md');
  assert.doesNotMatch(md, /from '\.\/lib\//, 'a relative import only works with cwd = plugin root');
  const start = md.indexOf('node --input-type=module -e "\nimport path from \'node:path\';');
  assert.ok(start > 0, 'the state-file block');
  const end = md.indexOf('\n```', start);
  const block = md.slice(start, end)
    .replaceAll('${CLAUDE_PLUGIN_ROOT}', ROOT)
    .replace("'{project_dir}' '{next_session_brief_path}' '{next_session_label}' '{status}'", '"$1" brief.md "Session 2" ready');
  const elsewhere = mkdtempSync(join(tmpdir(), 'voyage-state-'));
  try {
    const r = spawnSync('/bin/bash', ['-c', block, 'x', elsewhere], { cwd: elsewhere, encoding: 'utf8' });
    assert.equal(r.status, 0, r.stderr);
    assert.ok(existsSync(join(elsewhere, '.session-state.local.json')));
    assert.match(readFileSync(join(elsewhere, 'NEXT-SESSION-PROMPT.local.md'), 'utf8'), /produced_by: trekexecute/);
  } finally {
    rmSync(elsewhere, { recursive: true, force: true });
  }
});

// --- 12. every command's stats go through the one writer --------------------

test('stats: trekreview, trekresearch and trekcontinue write through stats-append, never silently skipped', () => {
  for (const [file, kind] of [['commands/trekreview.md', 'trekreview'], ['commands/trekresearch.md', 'trekresearch'], ['commands/trekcontinue.md', 'trekcontinue']]) {
    const md = read(file);
    assert.match(md, new RegExp(`node \\$\\{CLAUDE_PLUGIN_ROOT\\}/lib/stats/stats-append\\.mjs ${kind} <<'JSON'`), file);
    assert.doesNotMatch(md, /skip (stats )?silently|silently skip/i, file);
    assert.doesNotMatch(md, new RegExp(`\\$\\{CLAUDE_PLUGIN_DATA\\}/${kind}-stats\\.jsonl`), file);
  }
});

// --- 15. annotate prints a path a file:// link can use ----------------------

test('annotate: a relative input still prints an absolute .html path', () => {
  const dir = mkdtempSync(join(tmpdir(), 'voyage-annot-'));
  try {
    writeFileSync(join(dir, 'brief.md'), '# Brief\n\nText.\n');
    const r = spawnSync(process.execPath, [join(ROOT, 'scripts', 'annotate.mjs'), 'brief.md'], { cwd: dir, encoding: 'utf8' });
    assert.equal(r.status, 0, r.stderr);
    const out = r.stdout.trim();
    assert.ok(isAbsolute(out), out);
    assert.ok(existsSync(out), out);
  } finally {
    rmSync(dir, { recursive: true, force: true });
  }
});

// --- 16. the proof says what kind of red it was ------------------------------

function sh(cwd, cmd, args) {
  const r = spawnSync(cmd, args, { cwd, encoding: 'utf8' });
  assert.equal(r.status, 0, `${cmd} ${args.join(' ')}: ${r.stderr}`);
  return r.stdout.trim();
}

function repo(moduleText) {
  const dir = mkdtempSync(join(tmpdir(), 'red-kind-'));
  sh(dir, 'git', ['init', '-q']);
  sh(dir, 'git', ['config', 'user.email', 't@example.invalid']);
  sh(dir, 'git', ['config', 'user.name', 'test']);
  mkdirSync(join(dir, 'lib'));
  writeFileSync(join(dir, 'lib', 'sum.mjs'), moduleText);
  sh(dir, 'git', ['add', 'lib/sum.mjs']);
  sh(dir, 'git', ['commit', '-q', '-m', 'base']);
  mkdirSync(join(dir, 'tests'));
  writeFileSync(join(dir, 'tests', 'sum.test.mjs'), [
    "import { test } from 'node:test';",
    "import { strict as assert } from 'node:assert';",
    "import { sum } from '../lib/sum.mjs';",
    "test('sum adds', () => { assert.equal(sum(1, 2), 3); });",
    '',
  ].join('\n'));
  writeFileSync(join(dir, 'lib', 'sum.mjs'), 'export function sum(a, b) { return a + b; }\n');
  return { dir, base: sh(dir, 'git', ['rev-parse', 'HEAD']) };
}

const CMD = 'node --test tests/sum.test.mjs';

test('red proof: a start point that cannot even load the test is proven with red_kind "load-error"', () => {
  const { dir, base } = repo('export function other() { return 0; }\n');
  try {
    const r = proveRed({ cwd: dir, base, cmd: CMD, tests: ['tests/sum.test.mjs'] });
    assert.equal(r.status, 'proven', JSON.stringify(r));
    assert.equal(r.red_kind, 'load-error');
  } finally { rmSync(dir, { recursive: true, force: true }); }
});

test('red proof: a named test that fails at the start point is red_kind "test-failure"', () => {
  const { dir, base } = repo('export function sum(a, b) { return a - b; }\n');
  try {
    const r = proveRed({ cwd: dir, base, cmd: CMD, tests: ['tests/sum.test.mjs'] });
    assert.equal(r.status, 'proven', JSON.stringify(r));
    assert.equal(r.red_kind, 'test-failure');
  } finally { rmSync(dir, { recursive: true, force: true }); }
});