import '../dialogs/se-elix/define/NumberSpinBox.js';

const template = document.createElement('template');
template.innerHTML = `
  <style>
  div {
    height: 24px;
    margin: 5px 1px;
    padding: 3px;
  }
  div.imginside {
    width: var(--global-se-spin-input-width);
  }
  img {
    position: relative;
    right: -4px;
  }
  span {
    bottom: -0.5em;
    right: -4px;
    position: relative;
    margin-left: -4px;
    margin-right: 1px;
    color: #fff;
  }
  elix-number-spin-box {
    background-color: var(--input-color);
    border-radius: 3px;
    height: 20px;
    margin-top: 1px;
    vertical-align: top;
  }
  elix-number-spin-box::part(spin-button) {
    padding: 0px;
  }
  elix-number-spin-box::part(input) {
    width: 3em;
  }
  elix-number-spin-box{
    width: 54px;
    height: 24px;
  }
  </style>
  <div>
  <img alt="icon" width="24" height="24" aria-labelledby="label" />
  <span id="label">label</span>
  <elix-number-spin-box min="1" step="1"></elix-number-spin-box>
  </div>
`;

/**
 * @class SESpinInput
 */
export class SESpinInput extends HTMLElement {
  /**
    * @function constructor
    */
  constructor () {
    super();
    // create the shadowDom and insert the template
    this._shadowRoot = this.attachShadow({ mode: 'open' });
    this._shadowRoot.append(template.content.cloneNode(true));
    // locate the component
    this.$div = this._shadowRoot.querySelector('div');
    this.$img = this._shadowRoot.querySelector('img');
    this.$label = this.shadowRoot.getElementById('label');
    this.$event = new CustomEvent('change');
    this.$input = this._shadowRoot.querySelector('elix-number-spin-box');
  }
  /**
   * @function observedAttributes
   * @returns {any} observed
   */
  static get observedAttributes () {
    return [ 'value', 'label', 'src', 'size', 'min', 'max', 'step' ];
  }
  /**
   * @function attributeChangedCallback
   * @param {string} name
   * @param {string} oldValue
   * @param {string} newValue
   * @returns {void}
   */
  attributeChangedCallback (name, oldValue, newValue) {
    if (oldValue === newValue) return;
    switch (name) {
    case 'src':
      this.$img.setAttribute('src', newValue);
      this.$label.remove();
      this.$div.classList.add('imginside');
      break;
    case 'size':
      // access to the underlying input box
      this.$input.shadowRoot.getElementById('input').size = newValue;
      // below seems mandatory to override the default width style that takes precedence on size
      this.$input.shadowRoot.getElementById('input').style.width = 'unset';
      break;
    case 'step':
      this.$input.setAttribute('step', newValue);
      break;
    case 'min':
      this.$input.setAttribute('min', newValue);
      break;
    case 'max':
      this.$input.setAttribute('max', newValue);
      break;
    case 'label':
      this.$label.textContent = newValue;
      this.$img.remove();
      break;
    case 'value':
      this.$input.value = newValue;
      break;
    default:
      // eslint-disable-next-line no-console
      console.error(`unknown attribute: ${name}`);
      break;
    }
  }
  /**
   * @function get
   * @returns {any}
   */
  get label () {
    return this.getAttribute('label');
  }

  /**
   * @function set
   * @returns {void}
   */
  set label (value) {
    this.setAttribute('label', value);
  }
  /**
   * @function get
   * @returns {any}
   */
  get value () {
    return this.$input.value;
  }

  /**
   * @function set
   * @returns {void}
   */
  set value (value) {
    this.$input.value = value;
  }
  /**
   * @function get
   * @returns {any}
   */
  get src () {
    return this.getAttribute('src');
  }

  /**
   * @function set
   * @returns {void}
   */
  set src (value) {
    this.setAttribute('src', value);
  }

  /**
   * @function get
   * @returns {any}
   */
  get size () {
    return this.getAttribute('size');
  }

  /**
   * @function set
   * @returns {void}
   */
  set size (value) {
    this.setAttribute('size', value);
  }

  /**
   * @function connectedCallback
   * @returns {void}
   */
  connectedCallback () {
    const shadow = this.$input.shadowRoot;
    const childNodes = Array.from(shadow.childNodes);
    childNodes.forEach( (childNode) => {
      if(childNode?.id === "input") {
        childNode.addEventListener('keyup', (e) => {
          e.preventDefault();
          if (!isNaN(e.target.value)) {
            this.value = e.target.value;
            this.dispatchEvent(this.$event);
          }
        });
      }
    });
    this.$input.addEventListener('change', (e) => {
      e.preventDefault();
      this.value = e.target.value;
      this.dispatchEvent(this.$event);
    });
    this.$input.addEventListener('click', (e) => {
      e.preventDefault();
      this.value = e.target.value;
      this.dispatchEvent(this.$event);
    });
  }
}

// Register
customElements.define('se-spin-input', SESpinInput);
