import { expect, fixture, aTimeout } from '@open-wc/testing';
import { html } from '@lion/core';
import { localize } from '@lion/localize';
import { localizeTearDown } from '@lion/localize/test-helpers.js';

import { formatAmount } from '../src/formatters.js';
import { parseAmount } from '../src/parsers.js';
import '../lion-input-amount.js';

describe('<lion-input-amount>', () => {
  beforeEach(() => {
    localizeTearDown();
  });

  it('uses formatAmount for formatting', async () => {
    const el = await fixture(`<lion-input-amount></lion-input-amount>`);
    expect(el.formatter).to.equal(formatAmount);
  });

  it('formatAmount uses currency provided on webcomponent', async () => {
    // JOD displays 3 fraction digits by default
    localize.locale = 'fr-FR';
    const el = await fixture(
      html`
        <lion-input-amount currency="JOD" .modelValue="${123}"></lion-input-amount>
      `,
    );
    expect(el.formattedValue).to.equal('123,000');
  });

  it('formatAmount uses locale provided in formatOptions', async () => {
    let el = await fixture(
      html`
        <lion-input-amount
          .formatOptions="${{ locale: 'en-GB' }}"
          .modelValue="${123}"
        ></lion-input-amount>
      `,
    );
    expect(el.formattedValue).to.equal('123.00');
    el = await fixture(
      html`
        <lion-input-amount
          .formatOptions="${{ locale: 'nl-NL' }}"
          .modelValue="${123}"
        ></lion-input-amount>
      `,
    );
    expect(el.formattedValue).to.equal('123,00');
  });

  it('ignores global locale change if property is provided', async () => {
    const el = await fixture(html`
      <lion-input-amount .modelValue=${123456.78} .locale="${'en-GB'}"></lion-input-amount>
    `);
    expect(el.formattedValue).to.equal('123,456.78'); // British
    localize.locale = 'nl-NL';
    await aTimeout();
    expect(el.formattedValue).to.equal('123,456.78'); // should stay British
  });

  it('uses parseAmount for parsing', async () => {
    const el = await fixture(`<lion-input-amount></lion-input-amount>`);
    expect(el.parser).to.equal(parseAmount);
  });

  it('has type="text" to activate default keyboard on mobile with all necessary symbols', async () => {
    const el = await fixture(`<lion-input-amount></lion-input-amount>`);
    expect(el.inputElement.type).to.equal('text');
  });

  it('shows no currency', async () => {
    const el = await fixture(`<lion-input-amount></lion-input-amount>`);
    expect(el.$$slot('suffix')).to.be.undefined;
  });

  it('displays currency if provided', async () => {
    const el = await fixture(`<lion-input-amount currency="EUR"></lion-input-amount>`);
    expect(el.$$slot('after').innerText).to.equal('EUR');
  });

  it('can update currency', async () => {
    const el = await fixture(`<lion-input-amount currency="EUR"></lion-input-amount>`);
    el.currency = 'USD';
    await el.updateComplete;
    expect(el.$$slot('after').innerText).to.equal('USD');
  });

  it('ignores currency if a suffix is already present', async () => {
    const el = await fixture(
      `<lion-input-amount currency="EUR"><span slot="suffix">my-currency</span></lion-input-amount>`,
    );
    expect(el.$$slot('suffix').innerText).to.equal('my-currency');
    el.currency = 'EUR';
    await el.updateComplete;
    expect(el.$$slot('suffix').innerText).to.equal('my-currency');
  });
});