import { LionInputAmountDropdown } from '@lion/ui/input-amount-dropdown.js';
import sinon from 'sinon';
import {
  fixtureSync as _fixtureSync,
  fixture as _fixture,
  unsafeStatic,
  aTimeout,
  defineCE,
  expect,
  html,
} from '@open-wc/testing';

import { isActiveElement } from '../../core/test-helpers/isActiveElement.js';
import { mimicUserChangingDropdown } from '../test-helpers/mimicUserChangingDropdown.js';

/**
 * @typedef {import('../types/index.js').TemplateDataForDropdownInputAmount} TemplateDataForDropdownInputAmount
 * @typedef {HTMLSelectElement|HTMLElement & {modelValue:string}} DropdownElement
 * @typedef {import('lit').TemplateResult} TemplateResult
 */

const fixture = /** @type {(arg: string | TemplateResult) => Promise<LionInputAmountDropdown>} */ (
  _fixture
);
const fixtureSync = /** @type {(arg: string | TemplateResult) => LionInputAmountDropdown} */ (
  _fixtureSync
);

/**
 * @param {DropdownElement | HTMLSelectElement} dropdownEl
 * @returns {string}
 */
function getDropdownValue(dropdownEl) {
  if ('modelValue' in dropdownEl) {
    return dropdownEl.modelValue;
  }
  return dropdownEl.value;
}

/**
 * @param {{ klass:LionInputAmountDropdown }} config
 */
// @ts-expect-error
export function runInputAmountDropdownSuite({ klass } = { klass: LionInputAmountDropdown }) {
  // @ts-ignore
  const tagName = defineCE(/** @type {* & HTMLElement} */ (class extends klass {}));
  const tag = unsafeStatic(tagName);

  describe('LionInputAmountDropdown', () => {
    it('syncs value of dropdown on init if input has no value', async () => {
      const el = await fixture(html` <${tag}></${tag}> `);
      expect(el.value).to.equal('');
      expect(getDropdownValue(/** @type {DropdownElement} */ (el.refs.dropdown.value))).to.equal(
        'GBP',
      );
      expect(el.modelValue).to.eql({ currency: 'GBP' });
    });

    it('syncs value of dropdown on reset if input has no value', async () => {
      const el = await fixture(html` <${tag}></${tag}> `);
      el.modelValue = { currency: 'EUR', amount: 123 };
      await el.updateComplete;
      el.reset();
      await el.updateComplete;
      expect(el.modelValue).to.eql({ currency: 'GBP' });
      expect(el.value).to.equal('');
    });

    it('syncs value of dropdown on init if input has no value does not influence interaction states', async () => {
      const el = await fixture(html` <${tag}></${tag}> `);
      expect(el.dirty).to.be.false;
      expect(el.prefilled).to.be.false;
    });

    it('syncs value of dropdown on reset also resets interaction states', async () => {
      const el = await fixture(html` <${tag}></${tag}> `);
      el.modelValue = { currency: 'EUR', amount: 123 };
      await el.updateComplete;

      expect(el.dirty).to.be.true;
      expect(el.prefilled).to.be.false;
      el.reset();
      await el.updateComplete;
      expect(el.dirty).to.be.false;
      expect(el.prefilled).to.be.false;
    });

    it('syncs value of dropdown when preferredCurrency is set', async () => {
      const el = await fixture(html` <${tag}
          .preferredCurrencies="${['JPY', 'EUR']}"
          ></${tag}> `);
      expect(el.modelValue).to.eql({ currency: 'JPY' });
    });

    it('sets correct interaction states on init if input has a value', async () => {
      const el = await fixture(
        html` <${tag} .modelValue="${{ currency: 'EUR', amount: 123 }}"></${tag}> `,
      );
      expect(el.dirty).to.be.false;
      expect(el.prefilled).to.be.true;
    });

    describe('Dropdown display', () => {
      it('calls `templates.dropdown` with TemplateDataForDropdownInputAmount object', async () => {
        const modelValue = { currency: 'EUR', amount: 123 };
        const el = fixtureSync(html` <${tag}
          .modelValue="${modelValue}"
          .allowedCurrencies="${['EUR', 'GBP']}"
          .preferredCurrencies="${['GBP']}"
          ></${tag}> `);
        const spy = sinon.spy(
          /** @type {typeof LionInputAmountDropdown} */ (el.constructor).templates,
          'dropdown',
        );

        await el.updateComplete;
        const dropdownNode = el.refs.dropdown.value;
        const templateDataForDropdown = /** @type {TemplateDataForDropdownInputAmount} */ (
          spy.args[0][0]
        );
        expect(templateDataForDropdown).to.eql(
          /** @type {TemplateDataForDropdownInputAmount} */ ({
            data: {
              currency: 'EUR',
              regionMetaList: [
                {
                  currencyCode: 'EUR',
                  currencySymbol: '€',
                  nameForLocale: 'Euro',
                },
              ],
              regionMetaListPreferred: [
                {
                  currencyCode: 'GBP',
                  currencySymbol: '£',
                  nameForLocale: 'British Pound',
                },
              ],
            },
            refs: {
              dropdown: {
                labels: {
                  selectCurrency: 'Select currency',
                  allCurrencies: 'All currencies',
                  preferredCurrencies: 'Suggested currencies',
                },
                listeners: {
                  // @ts-expect-error [allow-protected]
                  change: el._onDropdownValueChange,
                  // @ts-expect-error [allow-protected]
                  'model-value-changed': el._onDropdownValueChange,
                },
                ref: {
                  value: dropdownNode,
                },
              },
              // @ts-expect-error [allow-protected]
              input: el._inputNode,
            },
          }),
        );
        spy.restore();
      });

      it('can override "all-currencies-label"', async () => {
        const el = fixtureSync(html` <${tag}
          .preferredCurrencies="${['GBP']}"
          ></${tag}> `);
        const spy = sinon.spy(
          /** @type {typeof LionInputAmountDropdown} */ (el.constructor).templates,
          'dropdown',
        );
        // @ts-expect-error [allow-protected]
        el._allCurrenciesLabel = 'foo';
        await el.updateComplete;
        const templateDataForDropdown = /** @type {TemplateDataForDropdownInputAmount} */ (
          spy.args[0][0]
        );

        expect(templateDataForDropdown.refs.dropdown.labels.allCurrencies).to.eql('foo');
        spy.restore();
      });

      it('can override "preferred-currencies-label"', async () => {
        const el = fixtureSync(html` <${tag}
          .preferredCurrencies="${['GBP']}"
          ></${tag}> `);
        const spy = sinon.spy(
          /** @type {typeof LionInputAmountDropdown} */ (el.constructor).templates,
          'dropdown',
        );
        // @ts-expect-error [allow-protected]
        el._preferredCurrenciesLabel = 'foo';
        await el.updateComplete;
        const templateDataForDropdown = /** @type {TemplateDataForDropdownInputAmount} */ (
          spy.args[0][0]
        );
        expect(templateDataForDropdown.refs.dropdown.labels.preferredCurrencies).to.eql('foo');
        spy.restore();
      });

      it('syncs dropdown value initially from locale', async () => {
        const el = await fixture(html` <${tag} .allowedCurrencies="${['GBP']}"></${tag}> `);
        expect(getDropdownValue(/** @type {DropdownElement} */ (el.refs.dropdown.value))).to.equal(
          'GBP',
        );
        expect(el.modelValue).to.eql({
          currency: 'GBP',
        });
      });

      it('syncs disabled attribute to dropdown', async () => {
        const el = await fixture(html` <${tag} disabled></${tag}> `);
        expect(/** @type {HTMLElement} */ (el.refs.dropdown.value)?.hasAttribute('disabled')).to.be
          .true;
      });

      it('disables dropdown on readonly', async () => {
        const el = await fixture(html` <${tag} readonly></${tag}> `);
        expect(/** @type {HTMLElement} */ (el.refs.dropdown.value)?.hasAttribute('disabled')).to.be
          .true;
      });

      it('renders to prefix slot in light dom', async () => {
        const el = await fixture(html` <${tag} .allowedCurrencies="${['GBP']}"></${tag}> `);
        const prefixSlot = /** @type {HTMLElement} */ (
          /** @type {HTMLElement} */ (el.refs.dropdown.value)
        );
        expect(prefixSlot.getAttribute('slot')).to.equal('prefix');
        expect(prefixSlot.slot).to.equal('prefix');
        expect(prefixSlot.parentElement).to.equal(el);
      });

      it('renders to suffix slot in light dom', async () => {
        class WithSuffixRenderInputAmountDropdown extends LionInputAmountDropdown {
          constructor() {
            super();

            this._dropdownSlot = 'suffix';
          }
        }

        const suffixTagName = defineCE(WithSuffixRenderInputAmountDropdown);
        const suffixTag = unsafeStatic(suffixTagName);

        const el = await fixture(html`
          <${suffixTag}
            .allowedCurrencies="${['GBP']}"
          ></${suffixTag}>
        `);
        const prefixSlot = /** @type {HTMLElement} */ (
          /** @type {HTMLElement} */ (el.refs.dropdown.value)
        );
        expect(prefixSlot.getAttribute('slot')).to.equal('suffix');
        expect(prefixSlot.slot).to.equal('suffix');
        expect(prefixSlot.parentElement).to.equal(el);
      });

      it('rerenders light dom when CurrencyUtil loaded', async () => {
        const el = await fixture(html` <${tag} .allowedCurrencies="${['GBP']}"></${tag}> `);
        // @ts-ignore
        const spy = sinon.spy(el, '__rerenderSlot');
        await aTimeout(0);
        expect(spy).to.have.been.calledWith('prefix');
        spy.restore();
      });
    });

    describe('On dropdown value change', () => {
      it('changes the currently active currency code in the textbox', async () => {
        const el = await fixture(html`
          <${tag}
            .allowedCurrencies="${['GBP', 'EUR']}"
            .modelValue="${{ currency: 'GBP', amount: 123 }}"
          ></${tag}>
        `);
        // @ts-ignore
        mimicUserChangingDropdown(el.refs.dropdown.value, 'EUR');
        await el.updateComplete;
        expect(el.currency).to.equal('EUR');
        expect(el.modelValue).to.eql({ amount: 123, currency: 'EUR' });
        await el.updateComplete;
        expect(el.value).to.equal('123.00');
      });

      it('changes the currently active country code in the textbox when empty', async () => {
        const el = await fixture(html` <${tag} .allowedCurrencies="${['GBP', 'EUR']}"></${tag}> `);
        el.value = '';
        // @ts-ignore
        mimicUserChangingDropdown(el.refs.dropdown.value, 'EUR');
        await el.updateComplete;
        await el.updateComplete;

        expect(el.modelValue).to.eql({ currency: 'EUR', amount: '' });
      });

      it('keeps focus on dropdownElement after selection if selected via unopened dropdown', async () => {
        const el = await fixture(
          html` <${tag} .allowedCurrencies="${[
            'GBP',
            'EUR',
          ]}" .modelValue="${{ currency: 'GBP', amount: 123 }}"></${tag}> `,
        );
        const dropdownElement = el.refs.dropdown.value;
        // @ts-ignore
        mimicUserChangingDropdown(dropdownElement, 'EUR');
        await el.updateComplete;
        // @ts-expect-error [allow-protected-in-tests]
        expect(isActiveElement(el._inputNode)).to.be.false;
      });
    });
  });

  describe('is empty', () => {
    it('ignores initial currencyCode', async () => {
      const el = await fixture(html` <${tag}></${tag}> `);
      // @ts-ignore
      expect(el._isEmpty(), 'empty').to.be.true;
    });
  });
}