// tests/commands/trekresearch.test.mjs
// Prose-pin tests for /trekresearch.

import { test } from 'node:test';
import { strict as assert } from 'node:assert';
import { readFileSync } from 'node:fs';
import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';

const HERE = dirname(fileURLToPath(import.meta.url));
const ROOT = join(HERE, '..', '..');
const COMMAND_FILE = join(ROOT, 'commands', 'trekresearch.md');

function read() { return readFileSync(COMMAND_FILE, 'utf8'); }

// --- Phase 5 slice (heading-bounded) ---

// Slice from the phase heading to the NEXT phase heading, never a fixed character window.
function phaseSlice(doc, startHeading, endHeading) {
  const start = doc.indexOf(startHeading);
  assert.ok(start >= 0, `${startHeading} missing`);
  const end = doc.indexOf(endHeading, start);
  assert.ok(end > start, `${endHeading} missing — could not bound ${startHeading}`);
  return doc.slice(start, end);
}

function phase5(doc) {
  return phaseSlice(doc, '## Phase 5 —', '## Phase 6 —');
}

test('trekresearch — Phase 4 runs the full swarm with contrarian-researcher as wave 2 every time (decision 209)', () => {
  const flatText = read().replace(/\s+/g, ' ');
  assert.ok(
    flatText.includes('Every run launches the FULL swarm for its scope: all 5 local agents when the scope includes local, and all 4 external agents when it includes external. `contrarian-researcher` is one of the external four and runs every time the scope includes external, as wave 2 (see Launch rules)'),
    'Phase 4 must state the one fixed path: the full swarm, contrarian-researcher as wave 2 every run',
  );
  assert.ok(
    !flatText.includes('use the existing conditional triggers'),
    'no effort must point at a conditional trigger that nothing defines',
  );
});

// --- Spawn model ---

/** Whitespace (line breaks too) collapsed to one space. */
const flat = (s) => s.replace(/\s+/g, ' ').trim();

/** From the line holding `marker` to the first blank line, flattened. */
function paragraphAt(text, marker) {
  const lines = text.split('\n');
  const start = lines.findIndex((l) => l.includes(marker));
  assert.ok(start !== -1, `commands/trekresearch.md must hold "${marker}"`);
  let end = lines.length;
  for (let i = start + 1; i < lines.length; i++) if (lines[i].trim() === '') { end = i; break; }
  return flat(lines.slice(start, end).join(' '));
}

test('trekresearch — Phase 5 follow-ups: a built-in agent is spawned with model opus, at most 2', () => {
  const text = read();
  const part = paragraphAt(phase5(text), 'launch a targeted follow-up agent');
  assert.match(part, /Maximum 2 follow-ups\./);
  assert.ok(part.includes("A follow-up may be one of Claude Code's built-in agents: Spawn it with `model: \"opus\"`: a built-in agent has no Voyage pin."), part);
});

test('trekresearch — promises no maxTurns budget', () => {
  const text = read();
  assert.doesNotMatch(text, /maxTurns/);
});