import assert from 'node:assert/strict';
import test from 'node:test';
import { collectEffects } from '../src/lib/parsers';
import { TarFile } from '../src/lib/untar';

function effectsFile(length: number) {
  const data = new Uint8Array(length);
  data[4] = 6;
  return {
    data,
    file: new TarFile('fx_settings', data.length, data),
    view: new DataView(data.buffer),
  };
}

test('preserves selected FX parsing for short files without extended state', () => {
  const fixture = effectsFile(100);
  fixture.view.setFloat32(32, 0.25, true);
  fixture.view.setFloat32(96, 0.75, true);

  const effects = collectEffects([fixture.file]);

  assert.equal(effects.effectType, 6);
  assert.equal(effects.param1, 0.25);
  assert.equal(effects.param2, 0.75);
  assert.equal(effects.rawData, fixture.data);
  assert.equal(effects.outputCompressor, undefined);
  assert.equal(effects.sidechain, undefined);
});

test('parses output compressor state from a 144-byte file without sidechain state', () => {
  const fixture = effectsFile(144);
  fixture.view.setFloat32(136, 0.25, true);
  fixture.view.setFloat32(140, 0.75, true);

  const effects = collectEffects([fixture.file]);

  assert.deepEqual(effects.outputCompressor, { drive: 0.25, speed: 0.75 });
  assert.equal(effects.sidechain, undefined);
});

test('parses sidechain controls from a 152-byte file without inventing routing', () => {
  const fixture = effectsFile(152);
  fixture.view.setFloat32(144, 0.25, true);
  fixture.view.setFloat32(148, 0.75, true);

  const effects = collectEffects([fixture.file]);

  assert.deepEqual(effects.sidechain, { length: 0.25, shape: 0.75, routing: undefined });
});

test('parses P07-like output dynamics and sidechain state from a 160-byte file', () => {
  const fixture = effectsFile(160);
  fixture.view.setFloat32(32, 0.5, true);
  fixture.view.setFloat32(96, 0.5, true);
  fixture.view.setFloat32(136, 0.5, true);
  fixture.view.setFloat32(140, 0.5, true);
  fixture.view.setFloat32(144, 0, true);
  fixture.view.setFloat32(148, 0.5, true);
  fixture.view.setUint16(152, 0x0600, true);
  fixture.view.setUint16(154, 0x8000, true);
  fixture.view.setUint16(156, 0x8000, true);
  fixture.view.setUint16(158, 0x8000, true);

  const effects = collectEffects([fixture.file]);

  assert.deepEqual(effects.outputCompressor, { drive: 0.5, speed: 0.5 });
  assert.deepEqual(effects.sidechain, {
    length: 0,
    shape: 0.5,
    routing: {
      a: { rawValue: 0x0600, sourcePadMask: 0x0600, duckedDestination: false },
      b: { rawValue: 0x8000, sourcePadMask: 0, duckedDestination: true },
      c: { rawValue: 0x8000, sourcePadMask: 0, duckedDestination: true },
      d: { rawValue: 0x8000, sourcePadMask: 0, duckedDestination: true },
    },
  });
});