import { describe, it, expect } from 'vitest';
import {
  transformVowels,
  transformConsonants,
  preserveCase,
  transformWord,
  transformPattern,
} from './translator';
import { TextElement, Pattern } from '@fluent/syntax';

describe('transformVowels', () => {
  it('should transform vowels correctly', () => {
    expect(transformVowels('hello')).toBe('hάllů');
    expect(transformVowels('quick')).toBe('qøīck');
  });

  it('should return the same word if no vowels are present', () => {
    expect(transformVowels('gym')).toBe('gym');
  });
});

describe('transformConsonants', () => {
  it('should transform consonants correctly', () => {
    expect(transformConsonants('hello')).toBe('ħe££o');
    expect(transformConsonants('quick')).toBe('ʠuiĉʞ');
  });
});

describe('preserveCase', () => {
  it('should preserve the case of the original word', () => {
    expect(preserveCase('Hello', 'ħëllø')).toBe('Ħëllø');
    expect(preserveCase('hElLo', 'ħëllø')).toBe('ħËlLø');
  });

  it('should return the transformed word if there is no case to preserve', () => {
    expect(preserveCase('hello', 'ħëllø')).toBe('ħëllø');
  });
});

describe('transformWord', () => {
  it('should transform and preserve case of the word', () => {
    expect(transformWord('Hello')).toBe('Ħά££ů');
    expect(transformWord('quick')).toBe('ʠøīĉʞ');
  });

  it('should return the original word if it contains no alphabets', () => {
    expect(transformWord('123')).toBe('123');
    expect(transformWord('!@#')).toBe('!@#');
  });
});

describe('transformPattern', () => {
  it('should transform a simple sentence', () => {
    const input = new Pattern([new TextElement('Hello world')]);
    const expected = new Pattern([new TextElement('Ħά££ů ŵůř£ḍ')]);
    expect(transformPattern(input)).toEqual(expected);
  });

  it('should preserve lines with special placeholders', () => {
    // eslint-disable-next-line no-template-curly-in-string
    const input = new Pattern([new TextElement('${text} [one] *[default]')]);
    // eslint-disable-next-line no-template-curly-in-string
    const expected = new Pattern([new TextElement('${text} [one] *[default]')]);
    expect(transformPattern(input)).toEqual(expected);
  });

  it('should preserve lines with labels', () => {
    const input = new Pattern([new TextElement('.aria-label = Actions')]);
    const expected = new Pattern([new TextElement('.aria-label = Ëĉ†īůŋš')]);
    expect(transformPattern(input)).toEqual(expected);
  });

  it('should only transform the last part of a sentence with multiple "=" signs', () => {
    const input = new Pattern([new TextElement('KEY = .aria-label = Actions')]);
    const expected = new Pattern([
      new TextElement('KEY = .aria-label = Ëĉ†īůŋš'),
    ]);
    expect(transformPattern(input)).toEqual(expected);
  });

  it('should only transform plain text within placeholders', () => {
    const input = new Pattern([
      new TextElement('[true] including { $firstParticipant }'),
    ]);
    const expected = new Pattern([
      new TextElement('[true] īŋĉ£øḍīŋğ { $firstParticipant }'),
    ]);
    expect(transformPattern(input)).toEqual(expected);
  });

  it('should preserve comments and empty lines', () => {
    const input1 = new Pattern([new TextElement('# This is a comment')]);
    const expected1 = new Pattern([new TextElement('# This is a comment')]);
    expect(transformPattern(input1)).toEqual(expected1);

    const input2 = new Pattern([new TextElement('')]);
    const expected2 = new Pattern([new TextElement('')]);
    expect(transformPattern(input2)).toEqual(expected2);
  });
});