import test from 'node:test';
import assert from 'node:assert/strict';

import {
  airshipLog,
  clearAirshipLogs,
  getAirshipLogs,
} from '../src/diagnostics.js';

test('diagnostics records structured entries and returns copies', () => {
  clearAirshipLogs();

  const originalLog = console.log;
  console.log = () => {};
  try {
    airshipLog('test:event', { value: 42 });
  } finally {
    console.log = originalLog;
  }

  const logs = getAirshipLogs();
  assert.equal(logs.length, 1);
  assert.equal(logs[0].event, 'test:event');
  assert.equal(logs[0].value, 42);
  assert.equal(logs[0].level, 'info');
  assert.match(logs[0].ts, /^\d{4}-\d{2}-\d{2}T/);

  logs[0].value = 99;
  assert.equal(getAirshipLogs()[0].value, 42);
});

test('diagnostics ring buffer is capped at 300 entries', () => {
  clearAirshipLogs();

  const originalLog = console.log;
  console.log = () => {};
  try {
    for (let i = 0; i < 305; i += 1) {
      airshipLog('test:ring', { i });
    }
  } finally {
    console.log = originalLog;
  }

  const logs = getAirshipLogs();
  assert.equal(logs.length, 300);
  assert.equal(logs[0].i, 5);
  assert.equal(logs.at(-1).i, 304);
});