import { expect, triggerBlurFor, triggerFocusFor, fixture } from '@open-wc/testing';
import { Required } from '@lion/ui/form-core.js';
import { html } from 'lit/static-html.js';
import { browserDetection } from '@lion/ui/core.js';

import '@lion/ui/define/lion-option.js';

import '@lion/ui/define/lion-listbox.js';
import '@lion/ui/define/lion-select-rich.js';
import { getSelectRichMembers } from '@lion/ui/select-rich-test-helpers.js';

/**
 * @typedef {import('../src/LionSelectRich.js').LionSelectRich} LionSelectRich
 * @typedef {import('../../listbox/src/LionOption.js').LionOption} LionOption
 */

/**
 * @param {HTMLElement} el
 * @param {string} key
 * @param {string} code
 */
function mimicKeyPress(el, key, code = '') {
  el.dispatchEvent(new KeyboardEvent('keydown', { key, code }));
  el.dispatchEvent(new KeyboardEvent('keyup', { key, code }));
}

/**
 * @param {LionOption[]} options
 * @param {number} selectedIndex
 */
function expectOnlyGivenOneOptionToBeChecked(options, selectedIndex) {
  /**
   * @param {{ checked: any; }} option
   * @param {any} i
   */
  options.forEach((option, i) => {
    if (i === selectedIndex) {
      expect(option.checked).to.be.true;
    } else {
      expect(option.checked).to.be.false;
    }
  });
}

describe('lion-select-rich interactions', () => {
  describe('Interaction mode', () => {
    it('autodetects interactionMode if not defined', async () => {
      const originalIsMac = browserDetection.isMac;

      browserDetection.isMac = true;
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich>
        `)
      );
      expect(el.interactionMode).to.equal('mac');
      const el2 = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="windows/linux"
            ><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich
          >
        `)
      );
      expect(el2.interactionMode).to.equal('windows/linux');

      browserDetection.isMac = false;
      const el3 = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich>
        `)
      );
      expect(el3.interactionMode).to.equal('windows/linux');
      const el4 = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="mac"
            ><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich
          >
        `)
      );
      expect(el4.interactionMode).to.equal('mac');
      browserDetection.isMac = originalIsMac;
    });

    it('derives selectionFollowsFocus and navigateWithinInvoker from interactionMode', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="windows/linux"
            ><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich
          >
        `)
      );
      expect(el.selectionFollowsFocus).to.be.true;
      expect(el.navigateWithinInvoker).to.be.true;

      const el2 = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="mac"
            ><lion-option .choiceValue=${10}>Item 1</lion-option></lion-select-rich
          >
        `)
      );
      expect(el2.selectionFollowsFocus).to.be.false;
      expect(el2.navigateWithinInvoker).to.be.false;
    });
  });

  describe('Invoker Keyboard navigation Mac', () => {
    it('opens dropdown with [ArrowDown] [ArrowUp] keys or navigates through the listbox options', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="mac">
            <lion-options slot="input">
              <lion-option .choiceValue=${10}>Item 1</lion-option>
              <lion-option .choiceValue=${20}>Item 2</lion-option>
              <lion-option .choiceValue=${30}>Item 3</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      const options = el.formElements;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowDown' }));

      expect(el.opened).to.be.true;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.opened = false;

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowUp' }));
      expect(el.opened).to.be.true;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);
    });

    it('does not open dropdown with [ArrowLeft] [ArrowRight] keys or navigates through the listbox options', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="mac">
            <lion-options slot="input">
              <lion-option .choiceValue=${10}>Item 1</lion-option>
              <lion-option .choiceValue=${20}>Item 2</lion-option>
              <lion-option .choiceValue=${30}>Item 3</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      const options = el.formElements;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowLeft' }));

      expect(el.opened).to.be.false;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowRight' }));
      expect(el.opened).to.be.false;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);
    });

    it('checks a value with [character] keys while listbox unopened', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="mac">
            <lion-options slot="input">
              <lion-option .choiceValue=${'red'}>Red</lion-option>
              <lion-option .choiceValue=${'teal'}>Teal</lion-option>
              <lion-option .choiceValue=${'turquoise'}>Turquoise</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      // @ts-ignore [allow-private] in test
      mimicKeyPress(el, 't', 'KeyT');
      expect(el.checkedIndex).to.equal(1);

      mimicKeyPress(el, 'u', 'KeyU');
      expect(el.checkedIndex).to.equal(2);
    });
  });

  describe('Invoker Keyboard navigation Windows/Linux', () => {
    it('navigation through list with [ArrowDown] [ArrowUp] keys checks the option while listbox unopened', async () => {
      let isTriggeredByUser;
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich
            interaction-mode="windows/linux"
            @model-value-changed="${(/** @type {CustomEvent} */ event) => {
              isTriggeredByUser = event.detail.isTriggeredByUser;
            }}"
          >
            <lion-options slot="input">
              <lion-option .choiceValue=${10}>Item 1</lion-option>
              <lion-option .choiceValue=${20}>Item 2</lion-option>
              <lion-option .choiceValue=${30}>Item 3</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      const options = el.formElements;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowDown' }));
      expect(el.checkedIndex).to.equal(1);
      expectOnlyGivenOneOptionToBeChecked(options, 1);
      expect(isTriggeredByUser).to.be.true;

      isTriggeredByUser = false;

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowUp' }));
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);
      expect(isTriggeredByUser).to.be.true;
    });

    it('navigation through list with [ArrowLeft] [ArrowRight] keys checks the option while listbox unopened', async () => {
      let isTriggeredByUser;
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich
            interaction-mode="windows/linux"
            @model-value-changed="${(/** @type {CustomEvent} */ event) => {
              isTriggeredByUser = event.detail.isTriggeredByUser;
            }}"
          >
            <lion-options slot="input">
              <lion-option .choiceValue=${10}>Item 1</lion-option>
              <lion-option .choiceValue=${20}>Item 2</lion-option>
              <lion-option .choiceValue=${30}>Item 3</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      const options = el.formElements;
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowRight' }));
      expect(el.checkedIndex).to.equal(1);
      expectOnlyGivenOneOptionToBeChecked(options, 1);
      expect(isTriggeredByUser).to.be.true;

      isTriggeredByUser = false;

      el.dispatchEvent(new KeyboardEvent('keyup', { key: 'ArrowLeft' }));
      expect(el.checkedIndex).to.equal(0);
      expectOnlyGivenOneOptionToBeChecked(options, 0);
      expect(isTriggeredByUser).to.be.true;
    });

    it('checks a value with [character] keys while listbox unopened', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich interaction-mode="windows/linux">
            <lion-options slot="input">
              <lion-option .choiceValue=${'red'}>Red</lion-option>
              <lion-option .choiceValue=${'teal'}>Teal</lion-option>
              <lion-option .choiceValue=${'turquoise'}>Turquoise</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );

      // @ts-ignore [allow-private] in test
      mimicKeyPress(el, 't', 'KeyT');
      expect(el.checkedIndex).to.equal(1);

      mimicKeyPress(el, 'u', 'KeyU');
      expect(el.checkedIndex).to.equal(2);
    });
  });

  describe('Disabled', () => {
    it('invoker cannot be focused if disabled', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich disabled>
            <lion-options slot="input"></lion-options>
          </lion-select-rich>
        `)
      );
      const { _invokerNode } = getSelectRichMembers(el);
      expect(_invokerNode.tabIndex).to.equal(-1);
    });

    it('cannot be opened via click if disabled', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich disabled>
            <lion-options slot="input"></lion-options>
          </lion-select-rich>
        `)
      );
      const { _invokerNode, _overlayCtrl } = getSelectRichMembers(el);
      _invokerNode.click();
      await _overlayCtrl._showComplete;
      expect(el.opened).to.be.false;
    });

    it('reflects disabled attribute to invoker', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich disabled>
            <lion-options slot="input"></lion-options>
          </lion-select-rich>
        `)
      );
      const { _invokerNode } = getSelectRichMembers(el);
      expect(_invokerNode.hasAttribute('disabled')).to.be.true;
      el.removeAttribute('disabled');
      await el.updateComplete;
      expect(_invokerNode.hasAttribute('disabled')).to.be.false;
    });
  });

  describe('Interaction states', () => {
    it('becomes touched if blurred once', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich>
            <lion-options slot="input">
              <lion-option .choiceValue=${10}>Item 1</lion-option>
              <lion-option .choiceValue=${20}>Item 2</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );
      const { _invokerNode } = getSelectRichMembers(el);
      expect(el.touched).to.be.false;
      await triggerFocusFor(_invokerNode);
      await triggerBlurFor(_invokerNode);
      expect(el.touched).to.be.true;
    });
  });

  describe('Accessibility', () => {
    it('sets [aria-invalid="true"] to "._invokerNode" when there is an error', async () => {
      const el = /** @type {LionSelectRich} */ (
        await fixture(html`
          <lion-select-rich .validators=${[new Required()]}>
            <lion-options slot="input">
              <lion-option .choiceValue=${null}>Please select a value</lion-option>
              <lion-option .modelValue=${{ value: 10, checked: true }}>Item 1</lion-option>
            </lion-options>
          </lion-select-rich>
        `)
      );
      const { _invokerNode } = getSelectRichMembers(el);
      const options = el.formElements;
      await el.feedbackComplete;
      await el.updateComplete;
      expect(_invokerNode.getAttribute('aria-invalid')).to.equal('false');

      options[0].checked = true;
      await el.feedbackComplete;
      await el.updateComplete;
      expect(_invokerNode.getAttribute('aria-invalid')).to.equal('true');

      options[1].checked = true;
      await el.feedbackComplete;
      await el.updateComplete;
      expect(_invokerNode.getAttribute('aria-invalid')).to.equal('false');
    });
  });
});