import { formatDistanceToNow } from 'date-fns';
import { DateTime } from 'luxon';

import {
  beautifyExactDate,
  beautifyPastDateAbsolute,
  beautifyPastDateRelativeToNow,
  DEFAULT_DATE_LOCALE,
  parseDate,
} from '../date-utils';
import { logError } from '../logError';

jest.mock('~/utils/logError');

describe('beautifyExactDate', () => {
  it('should return the correct relative date', () => {
    const mockDate = '2023-01-01T12:13:24';
    const actualDate = new Date(mockDate);
    const expected = DateTime.fromJSDate(actualDate)
      .setLocale(DEFAULT_DATE_LOCALE)
      .toFormat('DD · TT');

    const result = beautifyExactDate(mockDate);
    expect(result).toEqual(expected);
  });
});

describe('parseDate', () => {
  it('should log an error and return empty string when passed an invalid date string', () => {
    expect(() => {
      parseDate('invalid-date-string');
    }).toThrow(
      Error('Invalid date passed to formatPastDate: "invalid-date-string"'),
    );
  });

  it('should log an error and return empty string when passed NaN', () => {
    expect(() => {
      parseDate(NaN);
    }).toThrow(Error('Invalid date passed to formatPastDate: "NaN"'));
  });

  it('should log an error and return empty string when passed invalid Date object', () => {
    expect(() => {
      parseDate(new Date(NaN));
    }).toThrow(Error('Invalid date passed to formatPastDate: "Invalid Date"'));
  });
});

describe('beautifyPastDateRelativeToNow', () => {
  it('should return the correct relative date', () => {
    const mockDate = '2023-01-01';
    const actualDate = new Date(mockDate);
    const expected = formatDistanceToNow(actualDate);

    const result = beautifyPastDateRelativeToNow(mockDate);
    expect(result).toEqual(expected);
  });

  it('should log an error and return empty string when passed an invalid date string', () => {
    const result = beautifyPastDateRelativeToNow('invalid-date-string');

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "invalid-date-string"'),
    );
    expect(result).toEqual('');
  });

  it('should log an error and return empty string when passed NaN', () => {
    const result = beautifyPastDateRelativeToNow(NaN);

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "NaN"'),
    );
    expect(result).toEqual('');
  });

  it('should log an error and return empty string when passed invalid Date object', () => {
    const result = beautifyPastDateRelativeToNow(
      new Date('invalid-date-asdasd'),
    );

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "Invalid Date"'),
    );
    expect(result).toEqual('');
  });
});

describe('beautifyPastDateAbsolute', () => {
  it('should log an error and return empty string when passed an invalid date string', () => {
    const result = beautifyPastDateAbsolute('invalid-date-string');

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "invalid-date-string"'),
    );
    expect(result).toEqual('');
  });

  it('should log an error and return empty string when passed NaN', () => {
    const result = beautifyPastDateAbsolute(NaN);

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "NaN"'),
    );
    expect(result).toEqual('');
  });

  it('should log an error and return empty string when passed invalid Date object', () => {
    const result = beautifyPastDateAbsolute(new Date(NaN));

    expect(logError).toHaveBeenCalledWith(
      Error('Invalid date passed to formatPastDate: "Invalid Date"'),
    );
    expect(result).toEqual('');
  });

  it('should return the correct format when the date difference is less than 24 hours', () => {
    const now = DateTime.local();
    const pastDate = now.minus({ hours: 23 });
    const expected = pastDate.toFormat('HH:mm');

    const result = beautifyPastDateAbsolute(pastDate.toJSDate());
    expect(result).toEqual(expected);
  });

  it('should return the correct format when the date difference is less than 7 days', () => {
    const now = DateTime.local();
    const pastDate = now.minus({ days: 6 });
    const expected = pastDate.toFormat('cccc - HH:mm');

    const result = beautifyPastDateAbsolute(pastDate.toJSDate());
    expect(result).toEqual(expected);
  });

  it('should return the correct format when the date difference is less than 365 days', () => {
    const now = DateTime.local();
    const pastDate = now.minus({ days: 364 });
    const expected = pastDate.toFormat('MMMM d - HH:mm');

    const result = beautifyPastDateAbsolute(pastDate.toJSDate());
    expect(result).toEqual(expected);
  });

  it('should return the correct format when the date difference is more than 365 days', () => {
    const now = DateTime.local();
    const pastDate = now.minus({ days: 366 });
    const expected = pastDate.toFormat('dd/MM/yyyy - HH:mm');

    const result = beautifyPastDateAbsolute(pastDate.toJSDate());
    expect(result).toEqual(expected);
  });
});