const assert = require('assert');
const { StateCache } = require('../state-cache');

describe('StateCache', () => {
  it('merges realtime and blood pressure metrics into one complete payload', () => {
    const cache = new StateCache();
    const device = { deviceId: 'JH-001', ip: '127.0.0.1' };

    const realtimePayload = cache.update(device, {
      F: 36.8,
      A: 2000,
    }, { messageType: 'realtime' });

    assert.deepStrictEqual(realtimePayload, {
      n: 'JH-001',
      F: 36.8,
      A: 2000,
    });

    const bloodPressurePayload = cache.update(device, {
      N: 120,
      O: 80,
      P: 76,
      M: '2026-05-12 10:20:30',
    }, { messageType: 'blood-pressure' });

    assert.deepStrictEqual(bloodPressurePayload, {
      n: 'JH-001',
      F: 36.8,
      A: 2000,
      N: 120,
      O: 80,
      P: 76,
      M: '2026-05-12 10:20:30',
    });
  });

  it('keeps devices isolated', () => {
    const cache = new StateCache();

    cache.update({ deviceId: 'JH-001' }, { F: 36.8 }, { messageType: 'realtime' });
    cache.update({ deviceId: 'JH-002' }, { F: 37.1 }, { messageType: 'realtime' });

    assert.deepStrictEqual(cache.getPayload('JH-001'), {
      n: 'JH-001',
      F: 36.8,
    });
    assert.deepStrictEqual(cache.getPayload('JH-002'), {
      n: 'JH-002',
      F: 37.1,
    });
  });
});