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

const spools = (...materials) => materials.map((m, i) => ({ id: i + 1, material: m, remaining_g: 500 }));

test('a model is printable when every filament it names is on a spool', () => {
  const project = [{ type: 'PLA', colour: '#00AE42' }, { type: 'PETG', colour: '#000000' }];
  assert.equal(filaments.isPrintable(project, spools('PLA', 'PETG', 'ABS')), true);
  assert.deepEqual(filaments.missingMaterials(project, spools('PLA', 'PETG')), []);
});

test('what is missing is named, not just refused', () => {
  const project = [{ type: 'PLA' }, { type: 'PETG' }, { type: 'TPU' }];
  assert.deepEqual(filaments.missingMaterials(project, spools('PLA')), ['PETG', 'TPU']);
  assert.equal(filaments.isPrintable(project, spools('PLA')), false);
});

test('colour is ignored — a different colour still prints', () => {
  const project = [{ type: 'PLA', colour: '#FF0000' }];
  assert.equal(filaments.isPrintable(project, [{ material: 'PLA', colour_hex: '#0000FF', remaining_g: 200 }]), true);
});

test('case and spacing don’t matter, but a different material does', () => {
  assert.equal(filaments.normalise('  pla   basic '), 'PLA BASIC');
  // PLA-CF is carbon filled: a plain PLA spool is not a substitute.
  assert.deepEqual(filaments.missingMaterials([{ type: 'PLA-CF' }], spools('PLA')), ['PLA-CF']);
  assert.deepEqual(filaments.missingMaterials([{ type: 'pla' }], spools('PLA')), []);
});

test('an empty spool doesn’t count, but an unweighed one does', () => {
  const project = [{ type: 'PLA' }];
  assert.deepEqual(filaments.missingMaterials(project, [{ material: 'PLA', remaining_g: 0 }]), ['PLA']);
  assert.deepEqual(filaments.missingMaterials(project, [{ material: 'PLA', remaining_g: null }]), []);
  assert.deepEqual(filaments.missingMaterials(project, [{ material: 'PLA' }]), []);
});

test('a model we know nothing about is not claimed to be printable', () => {
  assert.equal(filaments.isPrintable(null, spools('PLA')), false);
  assert.equal(filaments.isPrintable([], spools('PLA')), false);
});

test('the same material twice is asked for once', () => {
  const project = [{ type: 'PLA', colour: '#FFF' }, { type: 'PLA', colour: '#000' }];
  assert.deepEqual(filaments.missingMaterials(project, []), ['PLA']);
});