// coaching-hook.test.mjs
// Tester coaching-hook (SC4): graceful-exit-grener + gyldig-syklus-emisjon +
// deterministisk fase via OKR_NOW klokke-seam. Spawner hooken som subprosess
// med kontrollert cwd + env. Zero npm deps. Coaching leser kun cwd, saa én
// temp-dir per test holder. Moenster: tests/inject-okr-context.test.mjs.

import { test } from 'node:test';
import assert from 'node:assert/strict';
import { execFileSync } from 'node:child_process';
import { mkdtempSync, mkdirSync, writeFileSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const HOOK = join(
  dirname(fileURLToPath(import.meta.url)),
  '..',
  'hooks',
  'scripts',
  'coaching-hook.mjs',
);

function writeConfig(workDir, body) {
  const p = join(workDir, '.claude');
  mkdirSync(p, { recursive: true });
  writeFileSync(join(p, 'okr.local.md'), body);
}

function runHook(cwd, okrNow) {
  // execFileSync returnerer stdout; hooken avslutter alltid med exit 0.
  const env = { ...process.env };
  if (okrNow) env.OKR_NOW = okrNow;
  else delete env.OKR_NOW;
  return execFileSync('node', [HOOK], { cwd, env, encoding: 'utf8' });
}

function withWork(fn) {
  const work = mkdtempSync(join(tmpdir(), 'okrcoach-'));
  try {
    fn(work);
  } finally {
    rmSync(work, { recursive: true, force: true });
  }
}

test('ingen config: exit 0, tom stdout (graceful)', () => {
  withWork((work) => {
    const out = runHook(work);
    assert.equal(out.trim(), '', 'ingen config -> tom stdout, ingen blokkering');
  });
});

test('config uten id: exit 0, tom stdout', () => {
  withWork((work) => {
    writeConfig(work, '---\nnavn: "Org"\n---\n');
    const out = runHook(work);
    assert.equal(out.trim(), '', 'manglende id -> tom stdout');
  });
});

test('ugyldig id: exit 0, tom stdout', () => {
  withWork((work) => {
    writeConfig(work, '---\nid: "ugyldig"\n---\n');
    const out = runHook(work);
    assert.equal(out.trim(), '', 'id som ikke matcher T/Q-moenster -> tom stdout');
  });
});

test('gyldig syklus: emitterer systemMessage', () => {
  withWork((work) => {
    writeConfig(work, '---\nid: "T2-2026"\n---\n');
    const out = runHook(work);
    assert.match(out, /OKR coaching/, 'gyldig syklus skal emittere coaching-melding');
  });
});

test('OKR_NOW tidlig fase: early-coaching', () => {
  withWork((work) => {
    writeConfig(work, '---\nid: "T2-2026"\n---\n');
    const out = runHook(work, '2026-05-05');
    assert.match(out, /Tidlig i syklusen/, 'uke 1 av T2 -> tidlig fase');
  });
});

test('OKR_NOW midtveis fase: mid-coaching', () => {
  withWork((work) => {
    writeConfig(work, '---\nid: "T2-2026"\n---\n');
    const out = runHook(work, '2026-06-20');
    assert.match(out, /Midtveis i syklusen/, 'uke ~8 av T2 -> midtveis fase');
  });
});

test('OKR_NOW sen fase: late-coaching', () => {
  withWork((work) => {
    writeConfig(work, '---\nid: "T2-2026"\n---\n');
    const out = runHook(work, '2026-08-25');
    assert.match(out, /sluttspurt/, 'uke ~16 av T2 -> sen fase');
  });
});