const test = require('node:test');
const assert = require('node:assert/strict');
const printer = require('../lib/printer');

test('AMS trays are read into material, colour and how much is left', () => {
  const trays = printer.describeAms([{ id: '0', tray: [
    { id: '0', tray_type: 'PLA', tray_color: 'FFFFFFFF', tray_info_idx: 'GFA00', tray_sub_brands: 'PLA Basic', remain: 82 },
    { id: '1', tray_type: '', tray_color: '00000000' },                  // empty slot
    { id: '2', tray_type: 'PETG', tray_color: '000000FF', remain: -1 },  // not a Bambu spool
  ] }]);
  assert.deepEqual(trays[0], {
    unit: 0, slot: 0, empty: false, material: 'PLA', colour: '#FFFFFF',
    profile: 'GFA00', brand: 'PLA Basic', remain: 82,
  });
  assert.equal(trays[1].empty, true);
  assert.equal(trays[1].material, null);
  assert.equal(trays[1].colour, null, 'an empty slot has no colour, whatever the printer says');
  assert.equal(trays[2].remain, null, '-1 means the printer can’t tell');
  assert.equal(trays[2].colour, '#000000', 'the alpha byte is dropped');
});

test('a printer with no AMS reports nothing rather than failing', () => {
  assert.deepEqual(printer.describeAms(undefined), []);
  assert.deepEqual(printer.describeAms([{ id: '0' }]), []);
});

test('the external spool holder is read the same way as a tray', () => {
  const ext = printer.describeTray({ id: '254', tray_type: 'PLA', tray_color: 'C12E1FFF', remain: 40 });
  assert.equal(ext.unit, null);
  assert.equal(ext.material, 'PLA');
  assert.equal(ext.colour, '#C12E1F');
  assert.equal(ext.remain, 40);
});

test('connection failures are explained in plain words', () => {
  assert.equal(printer.friendlyError(new Error('Connection refused: Not authorized')),
    'The printer refused the access code.');
  assert.equal(printer.friendlyError(new Error('connect ECONNREFUSED 192.0.2.10:8883')),
    'Nothing answered on port 8883 at that address.');
  assert.equal(printer.friendlyError(new Error('connect EHOSTUNREACH 192.0.2.10:8883')),
    'Couldn’t reach the printer from the server.');
  assert.equal(printer.friendlyError(null), 'The connection failed.');
});