import { describe, it, expect } from 'vitest';
import { parseCommand, getHelpText } from './commands.js';

describe('parseCommand', () => {
  it('parses /quit command', () => {
    expect(parseCommand('/quit')).toEqual({ type: 'quit' });
    expect(parseCommand('/exit')).toEqual({ type: 'quit' });
  });

  it('parses /reset command', () => {
    expect(parseCommand('/reset')).toEqual({ type: 'reset' });
    expect(parseCommand('/clear')).toEqual({ type: 'reset' });
  });

  it('parses /help command', () => {
    expect(parseCommand('/help')).toEqual({ type: 'help' });
    expect(parseCommand('/?')).toEqual({ type: 'help' });
  });

  it('parses /status command', () => {
    expect(parseCommand('/status')).toEqual({ type: 'status' });
  });

  it('parses /fullscreen command', () => {
    expect(parseCommand('/fullscreen')).toEqual({ type: 'fullscreen' });
    expect(parseCommand('/fs')).toEqual({ type: 'fullscreen' });
  });

  it('parses /compact command', () => {
    expect(parseCommand('/compact')).toEqual({ type: 'compact' });
  });

  it('parses /usage command', () => {
    expect(parseCommand('/usage')).toEqual({ type: 'usage' });
  });

  it('parses /model command without argument', () => {
    expect(parseCommand('/model')).toEqual({ type: 'model' });
  });

  it('parses /model command with argument', () => {
    expect(parseCommand('/model local')).toEqual({ type: 'model', name: 'local' });
    expect(parseCommand('/model opus')).toEqual({ type: 'model', name: 'opus' });
  });

  it('parses /backend command without argument', () => {
    expect(parseCommand('/backend')).toEqual({ type: 'backend' });
  });

  it('parses /backend command with argument', () => {
    expect(parseCommand('/backend llamacpp')).toEqual({ type: 'backend', provider: 'llamacpp' });
    expect(parseCommand('/backend ollama')).toEqual({ type: 'backend', provider: 'ollama' });
  });

  it('parses /transfer command', () => {
    expect(parseCommand('/transfer telegram')).toEqual({ type: 'transfer', target: 'telegram' });
  });

  it('parses regular message', () => {
    expect(parseCommand('Hello Flynn')).toEqual({ type: 'message', content: 'Hello Flynn' });
  });

  it('returns null for empty input', () => {
    expect(parseCommand('')).toBeNull();
    expect(parseCommand('   ')).toBeNull();
  });
});

describe('getHelpText', () => {
  it('returns help text with all commands', () => {
    const help = getHelpText();
    expect(help).toContain('/help');
    expect(help).toContain('/model');
    expect(help).toContain('/reset');
    expect(help).toContain('/compact');
    expect(help).toContain('/usage');
    expect(help).toContain('/quit');
  });
});