// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only

import { assert } from 'chai';
import * as moment from 'moment';
import { setupI18n } from '../../util/setupI18n';
import enMessages from '../../../_locales/en/messages.json';
import esMessages from '../../../_locales/es/messages.json';
import nbMessages from '../../../_locales/nb/messages.json';
import nnMessages from '../../../_locales/nn/messages.json';
import ptBrMessages from '../../../_locales/pt_BR/messages.json';
import zhCnMessages from '../../../_locales/zh_CN/messages.json';

import * as expirationTimer from '../../util/expirationTimer';

describe('expiration timer utilities', () => {
  const i18n = setupI18n('en', enMessages);

  describe('DEFAULT_DURATIONS_IN_SECONDS', () => {
    const { DEFAULT_DURATIONS_IN_SECONDS } = expirationTimer;

    it('includes at least 3 durations', () => {
      assert.isAtLeast(DEFAULT_DURATIONS_IN_SECONDS.length, 3);
    });

    it('includes 1 hour as seconds', () => {
      const oneHour = moment.duration(1, 'hour').asSeconds();
      assert.include(DEFAULT_DURATIONS_IN_SECONDS, oneHour);
    });
  });

  describe('format', () => {
    const { format } = expirationTimer;

    it('handles an undefined duration', () => {
      assert.strictEqual(format(i18n, undefined), 'off');
    });

    it('handles no duration', () => {
      assert.strictEqual(format(i18n, 0), 'off');
    });

    it('formats durations', () => {
      new Map<number, string>([
        [1, '1 second'],
        [2, '2 seconds'],
        [30, '30 seconds'],
        [59, '59 seconds'],
        [moment.duration(1, 'm').asSeconds(), '1 minute'],
        [moment.duration(5, 'm').asSeconds(), '5 minutes'],
        [moment.duration(1, 'h').asSeconds(), '1 hour'],
        [moment.duration(8, 'h').asSeconds(), '8 hours'],
        [moment.duration(1, 'd').asSeconds(), '1 day'],
        [moment.duration(6, 'd').asSeconds(), '6 days'],
        [moment.duration(8, 'd').asSeconds(), '8 days'],
        [moment.duration(30, 'd').asSeconds(), '30 days'],
        [moment.duration(365, 'd').asSeconds(), '365 days'],
        [moment.duration(1, 'w').asSeconds(), '1 week'],
        [moment.duration(3, 'w').asSeconds(), '3 weeks'],
        [moment.duration(52, 'w').asSeconds(), '52 weeks'],
      ]).forEach((expected, input) => {
        assert.strictEqual(format(i18n, input), expected);
      });
    });

    it('formats other languages successfully', () => {
      const esI18n = setupI18n('es', esMessages);
      assert.strictEqual(format(esI18n, 120), '2 minutos');

      const zhCnI18n = setupI18n('zh_CN', zhCnMessages);
      assert.strictEqual(format(zhCnI18n, 60), '1 分钟');

      // The underlying library supports the "pt" locale, not the "pt_BR" locale. That's
      //   what we're testing here.
      const ptBrI18n = setupI18n('pt_BR', ptBrMessages);
      assert.strictEqual(
        format(ptBrI18n, moment.duration(5, 'days').asSeconds()),
        '5 dias'
      );

      // The underlying library supports the Norwegian language, which is a macrolanguage
      //   for Bokmål and Nynorsk.
      [setupI18n('nb', nbMessages), setupI18n('nn', nnMessages)].forEach(
        norwegianI18n => {
          assert.strictEqual(
            format(norwegianI18n, moment.duration(6, 'hours').asSeconds()),
            '6 timer'
          );
        }
      );
    });

    it('falls back to English if the locale is not supported', () => {
      const badI18n = setupI18n('bogus', {});
      assert.strictEqual(format(badI18n, 120), '2 minutes');
    });

    it('handles a "mix" of units gracefully', () => {
      // We don't expect there to be a "mix" of units, but we shouldn't choke if a bad
      //   client gives us an unexpected timestamp.
      const mix = moment
        .duration(6, 'days')
        .add(moment.duration(2, 'hours'))
        .asSeconds();
      assert.strictEqual(format(i18n, mix), '6 days, 2 hours');
    });

    it('handles negative numbers gracefully', () => {
      // The proto helps enforce non-negative numbers by specifying a u32, but because
      //   JavaScript lacks such a type, we test it here.
      assert.strictEqual(format(i18n, -1), '1 second');
      assert.strictEqual(format(i18n, -120), '2 minutes');
      assert.strictEqual(format(i18n, -0), 'off');
    });

    it('handles fractional seconds gracefully', () => {
      // The proto helps enforce integer numbers by specifying a u32, but this function
      //   shouldn't choke if bad data is passed somehow.
      assert.strictEqual(format(i18n, 4.2), '4 seconds');
      assert.strictEqual(format(i18n, 4.8), '4 seconds');
      assert.strictEqual(format(i18n, 0.2), '1 second');
      assert.strictEqual(format(i18n, 0.8), '1 second');

      // If multiple things go wrong and we pass a fractional negative number, we still
      //   shouldn't explode.
      assert.strictEqual(format(i18n, -4.2), '4 seconds');
      assert.strictEqual(format(i18n, -4.8), '4 seconds');
      assert.strictEqual(format(i18n, -0.2), '1 second');
      assert.strictEqual(format(i18n, -0.8), '1 second');
    });
  });
});
