import { describe, it, expect, afterEach, vi } from 'vitest';
import {
  clipboardIntent,
  isMacPlatform,
  readClipboard,
  writeClipboard,
  type ClipboardKey,
} from '../src/lib/terminal-clipboard';

function key(k: string, mods: Partial<ClipboardKey> = {}): ClipboardKey {
  return { key: k, ctrlKey: false, shiftKey: false, metaKey: false, altKey: false, ...mods };
}

describe('clipboardIntent (Linux / Windows)', () => {
  it('copie sur Ctrl+Shift+C quand il y a une sélection', () => {
    expect(clipboardIntent(key('C', { ctrlKey: true, shiftKey: true }), true, false)).toBe('copy');
  });

  it('laisse passer Ctrl+Shift+C sans sélection (rien à copier)', () => {
    expect(clipboardIntent(key('C', { ctrlKey: true, shiftKey: true }), false, false)).toBeNull();
  });

  it('colle sur Ctrl+Shift+V, sélection ou pas', () => {
    expect(clipboardIntent(key('V', { ctrlKey: true, shiftKey: true }), false, false)).toBe('paste');
    expect(clipboardIntent(key('v', { ctrlKey: true, shiftKey: true }), true, false)).toBe('paste');
  });

  it("n'intercepte JAMAIS Ctrl+C seul : c'est SIGINT", () => {
    expect(clipboardIntent(key('c', { ctrlKey: true }), true, false)).toBeNull();
    expect(clipboardIntent(key('c', { ctrlKey: true }), false, false)).toBeNull();
  });

  it('laisse passer Ctrl+V seul (le collage natif d’xterm suffit)', () => {
    expect(clipboardIntent(key('v', { ctrlKey: true }), false, false)).toBeNull();
  });

  it('ignore les combinaisons avec Alt ou Meta', () => {
    expect(clipboardIntent(key('c', { ctrlKey: true, shiftKey: true, altKey: true }), true, false)).toBeNull();
    expect(clipboardIntent(key('c', { ctrlKey: true, shiftKey: true, metaKey: true }), true, false)).toBeNull();
  });

  it('supporte Ctrl+Insert / Shift+Insert', () => {
    expect(clipboardIntent(key('Insert', { ctrlKey: true }), true, false)).toBe('copy');
    expect(clipboardIntent(key('Insert', { ctrlKey: true }), false, false)).toBeNull();
    expect(clipboardIntent(key('Insert', { shiftKey: true }), false, false)).toBe('paste');
    expect(clipboardIntent(key('Insert', { ctrlKey: true, shiftKey: true }), true, false)).toBeNull();
  });
});

describe('clipboardIntent (macOS)', () => {
  it('copie sur Cmd+C avec sélection, colle sur Cmd+V', () => {
    expect(clipboardIntent(key('c', { metaKey: true }), true, true)).toBe('copy');
    expect(clipboardIntent(key('c', { metaKey: true }), false, true)).toBeNull();
    expect(clipboardIntent(key('v', { metaKey: true }), false, true)).toBe('paste');
  });

  it('garde Ctrl+C en SIGINT sur macOS aussi', () => {
    expect(clipboardIntent(key('c', { ctrlKey: true }), true, true)).toBeNull();
  });

  it('ignore Ctrl+Shift+C sur macOS (réservé Cmd)', () => {
    expect(clipboardIntent(key('c', { ctrlKey: true, shiftKey: true }), true, true)).toBeNull();
  });
});

// Le pont de l'app de bureau doit primer : dans Electron, navigator.clipboard rejette en
// NotAllowedError (lecture ET écriture), ce qui rendait la copie impossible depuis un terminal.
describe('writeClipboard / readClipboard', () => {
  // `globalThis.navigator` est un getter en Node : seul stubGlobal sait le remplacer proprement.
  const stub = (name: string, value: unknown): void => vi.stubGlobal(name, value);
  afterEach(() => {
    vi.unstubAllGlobals();
  });

  it('écrit par le pont desktop quand il est présent', async () => {
    const writeText = vi.fn().mockResolvedValue(true);
    stub('arboretumDesktop', { clipboard: { writeText } });
    stub('navigator', { clipboard: { writeText: vi.fn().mockRejectedValue(new Error('NotAllowedError')) } });
    expect(await writeClipboard('bonjour')).toBe(true);
    expect(writeText).toHaveBeenCalledWith('bonjour');
  });

  it('retombe sur navigator.clipboard si le pont échoue', async () => {
    stub('arboretumDesktop', { clipboard: { writeText: vi.fn().mockRejectedValue(new Error('ipc down')) } });
    const navWrite = vi.fn().mockResolvedValue(undefined);
    stub('navigator', { clipboard: { writeText: navWrite } });
    expect(await writeClipboard('secours')).toBe(true);
    expect(navWrite).toHaveBeenCalledWith('secours');
  });

  it('ne tente rien pour un texte vide', async () => {
    const writeText = vi.fn();
    stub('arboretumDesktop', { clipboard: { writeText } });
    expect(await writeClipboard('')).toBe(false);
    expect(writeText).not.toHaveBeenCalled();
  });

  it('lit par le pont desktop, sinon par navigator, sinon null', async () => {
    stub('arboretumDesktop', { clipboard: { readText: vi.fn().mockResolvedValue('du pont') } });
    expect(await readClipboard()).toBe('du pont');

    stub('arboretumDesktop', undefined);
    stub('navigator', { clipboard: { readText: vi.fn().mockResolvedValue('du navigateur') } });
    expect(await readClipboard()).toBe('du navigateur');

    stub('navigator', { clipboard: { readText: vi.fn().mockRejectedValue(new Error('NotAllowedError')) } });
    expect(await readClipboard()).toBeNull();
  });
});

describe('isMacPlatform', () => {
  it('reconnaît macOS et iPadOS, pas Linux ni Windows', () => {
    expect(isMacPlatform({ platform: 'MacIntel', userAgent: 'Mozilla/5.0 (Macintosh)' })).toBe(true);
    expect(isMacPlatform({ platform: 'iPhone', userAgent: '' })).toBe(true);
    expect(isMacPlatform({ platform: 'Linux x86_64', userAgent: 'Mozilla/5.0 (X11; Linux)' })).toBe(false);
    expect(isMacPlatform({ platform: 'Win32', userAgent: 'Mozilla/5.0 (Windows NT 10.0)' })).toBe(false);
  });
});