import { test } from 'node:test';
import assert from 'node:assert/strict';
import { openDb, enqueueJob, startJob, finishJob, recoverPendingJobs } from '../src/lib/db.js';

const JOB = (over = {}) => ({
  event: 'push', owner: 'nirpa', repo: 'demo', sha: 'a'.repeat(40),
  ref: 'refs/heads/main', before: 'b'.repeat(40), prIndex: null, prTitle: null,
  pusher: 'nirpa', authors: ['nirpa'], commitShas: ['a'.repeat(40)],
  commitMessages: ['msg'], ...over
});

test('enqueued jobs that never finish are recovered on startup', () => {
  const db = openDb(':memory:');
  const id1 = enqueueJob(db, JOB({ sha: '1'.repeat(40) }));
  const id2 = enqueueJob(db, JOB({ sha: '2'.repeat(40) }));
  const id3 = enqueueJob(db, JOB({ sha: '3'.repeat(40), prIndex: 7 }));
  finishJob(db, id2, 'pass');

  const pending = recoverPendingJobs(db);
  assert.equal(pending.length, 2);
  assert.deepEqual(pending.map(p => p.id), [id1, id3]);
  // job payload round-trips intact
  assert.equal(pending[0].job.sha, '1'.repeat(40));
  assert.equal(pending[1].job.prIndex, 7);
  assert.deepEqual(pending[0].job.commitMessages, ['msg']);
});

test('finished jobs are not recovered again', () => {
  const db = openDb(':memory:');
  const id = enqueueJob(db, JOB());
  finishJob(db, id, 'warn');
  assert.equal(recoverPendingJobs(db).length, 0);
});

test('running jobs are visible and recovered on startup', () => {
  const db = openDb(':memory:');
  const id = enqueueJob(db, JOB({ sha: '4'.repeat(40) }));
  startJob(db, id);

  const row = db.prepare(`SELECT state, started_ts FROM queue_jobs WHERE id = ?`).get(id);
  assert.equal(row.state, 'running');
  assert.match(row.started_ts, /^\d{4}-\d{2}-\d{2}T/);

  const pending = recoverPendingJobs(db);
  assert.deepEqual(pending.map(p => p.id), [id]);
});

test('unparseable persisted job is marked done, not re-run forever', () => {
  const db = openDb(':memory:');
  db.prepare(`INSERT INTO queue_jobs (repo, sha, job) VALUES ('a/b', 'c', '{broken')`).run();
  assert.equal(recoverPendingJobs(db).length, 0);
  // and it is now terminal
  assert.equal(recoverPendingJobs(db).length, 0);
  const row = db.prepare(`SELECT state, outcome FROM queue_jobs`).get();
  assert.equal(row.state, 'done');
  assert.equal(row.outcome, 'unparseable-job');
});

test('recovery is ordered oldest first', () => {
  const db = openDb(':memory:');
  const ids = [enqueueJob(db, JOB()), enqueueJob(db, JOB()), enqueueJob(db, JOB())];
  const pending = recoverPendingJobs(db);
  assert.deepEqual(pending.map(p => p.id), ids);
});