import { describe, expect, it } from 'vitest';
import {
  audioPath,
  extFromMime,
  formatDuration,
  formatLocalTime,
  makeId,
  mimeFromExt,
  notePath,
} from '../src/core/naming';

const T = new Date('2026-09-27T11:15:03.000Z'); // 14:15:03 по Москве

function seq(...values: number[]): () => number {
  return () => values.shift() ?? 0;
}

describe('test environment', () => {
  it('runs in UTC+3', () => {
    expect(T.getHours()).toBe(14);
  });
});

describe('makeId', () => {
  it('uses UTC time and 4 hex chars', () => {
    expect(makeId(T, () => 0)).toBe('20260927-111503-0000');
    expect(makeId(T, seq(0.99, 0.5, 0.0625, 0.1))).toBe('20260927-111503-f811');
  });

  it('clamps random() === 1 to f', () => {
    expect(makeId(T, () => 1)).toBe('20260927-111503-ffff');
  });

  it('does not depend on the local date', () => {
    const lateEvening = new Date('2026-09-27T22:30:00.000Z'); // 01:30 28-го по Москве
    expect(makeId(lateEvening, () => 0)).toBe('20260927-223000-0000');
    expect(notePath(lateEvening, 1)).toBe('voice/inbox/2026-09-28 01-30-00.md');
  });
});

describe('extFromMime', () => {
  it.each([
    ['audio/mp4', 'm4a'],
    ['audio/webm', 'webm'],
    ['audio/webm;codecs=opus', 'webm'],
    ['AUDIO/MP4', 'm4a'],
    ['audio/ogg; codecs=opus', 'ogg'],
    ['audio/x-foo', 'bin'],
    ['', 'bin'],
  ])('%s → %s', (mime, ext) => {
    expect(extFromMime(mime)).toBe(ext);
  });
});

describe('paths', () => {
  it('audioPath', () => {
    expect(audioPath('20260927-111503-0000', 'audio/mp4')).toBe('voice/source/20260927-111503-0000.m4a');
  });

  it('notePath uses local time and suffix from 2', () => {
    expect(notePath(T, 1)).toBe('voice/inbox/2026-09-27 14-15-03.md');
    expect(notePath(T, 2)).toBe('voice/inbox/2026-09-27 14-15-03 (2).md');
    expect(notePath(T, 3)).toBe('voice/inbox/2026-09-27 14-15-03 (3).md');
  });
});

describe('formatting', () => {
  it.each([
    [0, '0:00'],
    [47_000, '0:47'],
    [125_400, '2:05'],
    [-5, '0:00'],
  ])('formatDuration(%d) = %s', (ms, text) => {
    expect(formatDuration(ms)).toBe(text);
  });

  it('formatLocalTime', () => {
    expect(formatLocalTime('2026-09-27T11:17:03.000Z')).toBe('14:17');
  });
});

describe('mimeFromExt', () => {
  it.each([
    ['m4a', 'audio/mp4'],
    ['M4A', 'audio/mp4'],
    ['webm', 'audio/webm'],
    ['ogg', 'audio/ogg'],
  ])('%s → %s', (ext, mime) => {
    expect(mimeFromExt(ext)).toBe(mime);
  });

  it.each(['bin', 'mp3', '', 'md'])('%j → null', (ext) => {
    expect(mimeFromExt(ext)).toBeNull();
  });
});