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

const NodeClass = require('../../src/nodeClass');
const { Reactor_CSTR, Reactor_PFR } = require('../../src/specificClass');
const { makeUiConfig, makeReactorConfig, makeNodeStub } = require('../helpers/factories');

test('_loadConfig coerces numeric fields and builds initial state vector', () => {
  const inst = Object.create(NodeClass.prototype);
  inst.node = { id: 'n-reactor-1' };
  inst.name = 'reactor';

  inst._loadConfig(
    makeUiConfig({
      volume: '12.5',
      length: '9',
      resolution_L: '7',
      alpha: '0.5',
      n_inlets: '3',
      timeStep: '2',
      S_O_init: '1.1',
    }),
  );

  assert.equal(inst.config.volume, 12.5);
  assert.equal(inst.config.length, 9);
  assert.equal(inst.config.resolution_L, 7);
  assert.equal(inst.config.alpha, 0.5);
  assert.equal(inst.config.n_inlets, 3);
  assert.equal(inst.config.timeStep, 2);
  assert.equal(inst.config.initialState.length, 13);
  assert.equal(inst.config.initialState[0], 1.1);
});

test('_setupClass selects Reactor_CSTR when configured as CSTR', () => {
  const inst = Object.create(NodeClass.prototype);
  inst.node = makeNodeStub();
  inst.config = makeReactorConfig({ reactor_type: 'CSTR' });

  inst._setupClass();

  assert.ok(inst.source instanceof Reactor_CSTR);
  assert.equal(inst.node.source, inst.source);
});

test('_setupClass selects Reactor_PFR when configured as PFR', () => {
  const inst = Object.create(NodeClass.prototype);
  inst.node = makeNodeStub();
  inst.config = makeReactorConfig({ reactor_type: 'PFR', length: 10, resolution_L: 5 });

  inst._setupClass();

  assert.ok(inst.source instanceof Reactor_PFR);
  assert.equal(inst.node.source, inst.source);
});