import { describe, expect, it } from 'vitest';

import { vibePresets } from './vibe-presets';

const FINAL_VIBE_NAMES = [
  'Aurora Mycelium Copy',
  'Velvet Observatory',
  'Lichen Signal',
  'Tidepool Lantern',
  'Paper Lantern Fog Copy',
  'Chrome Pollen',
];

describe('vibePresets', () => {
  it('keeps the classic preset set distinct', () => {
    expect(vibePresets.map((preset) => preset.name)).toEqual(FINAL_VIBE_NAMES);

    const ids = vibePresets.map((preset) => preset.id);
    expect(new Set(ids).size).toBe(vibePresets.length);
  });

  it('includes both blended and visibly particulate styles', () => {
    const blendedNames = vibePresets
      .filter(
        (preset) => preset.settings.brushSize >= 17 && preset.settings.clarity <= 0.56
      )
      .map((preset) => preset.name);
    const softParticleNames = vibePresets
      .filter(
        (preset) => preset.settings.brushSize <= 5 && preset.settings.clarity <= 0.2
      )
      .map((preset) => preset.name);

    expect(blendedNames).toEqual(['Tidepool Lantern']);
    expect(softParticleNames).toEqual(['Chrome Pollen']);
  });

  it('stays inside interactive performance guardrails', () => {
    const violations = vibePresets.flatMap((preset) => {
      const { name, settings } = preset;
      const presetViolations: Array<string> = [];

      if (settings.spawnPerPixel > 0.38) {
        presetViolations.push(`${name} density exceeds 0.38`);
      }
      if (settings.brushSize > 36) {
        presetViolations.push(`${name} brush size exceeds 36`);
      }
      if (
        settings.spawnPerPixel >= 0.28 &&
        (settings.decayRateTrails > 940 ||
          settings.brushSize > 14 ||
          settings.individualTrailWeight > 0.055)
      ) {
        presetViolations.push(`${name} combines high density with too much persistence`);
      }

      return presetViolations;
    });

    expect(violations).toEqual([]);
  });
});