import { describe, it, expect } from 'vitest';
import { domainColor, domainIcon, domainLabel, DOMAIN_VIEWER_PALETTE } from './domain-palette';

describe('DOMAIN_VIEWER_PALETTE', () => {
  it('has exactly the v1 palette entries (musehub#117 DOM_09)', () => {
    expect(Object.keys(DOMAIN_VIEWER_PALETTE).sort()).toEqual(
      ['generic', 'piano_roll', 'symbol_graph'].sort()
    );
  });
});

describe('domainColor', () => {
  it('returns the symbol_graph color', () => {
    expect(domainColor('symbol_graph')).toBe('#58a6ff');
  });

  it('returns the piano_roll color', () => {
    expect(domainColor('piano_roll')).toBe('#bc8cff');
  });

  it('falls back to generic color for unknown viewer types', () => {
    expect(domainColor('totally_unknown')).toBe(DOMAIN_VIEWER_PALETTE.generic.color);
  });
});

describe('domainIcon', () => {
  it('returns distinct icons per known viewer type', () => {
    expect(domainIcon('symbol_graph')).toBe('⬡');
    expect(domainIcon('piano_roll')).toBe('♪');
  });

  it('falls back to generic icon for unknown viewer types', () => {
    expect(domainIcon('nonsense')).toBe(DOMAIN_VIEWER_PALETTE.generic.icon);
  });
});

describe('domainLabel', () => {
  it('prefers a real domain name over the palette label', () => {
    expect(domainLabel('symbol_graph', 'My Domain')).toBe('My Domain');
  });

  it('falls back to the palette label when name is missing', () => {
    expect(domainLabel('piano_roll')).toBe('MIDI');
  });

  it('falls back to the palette label when name is "Unknown"', () => {
    expect(domainLabel('symbol_graph', 'Unknown')).toBe('Code');
  });

  it('falls back to generic label for unknown viewer types with no name', () => {
    expect(domainLabel('mystery')).toBe('Generic');
  });
});