import Hook from './hook';

class HookInput extends Hook {
  constructor(trigger, list, plugins, config) {
    super(trigger, list, plugins, config);

    this.type = 'input';
    this.event = 'input';

    this.eventWrapper = {};

    this.addEvents();
    this.addPlugins();
  }

  addPlugins() {
    this.plugins.forEach(plugin => plugin.init(this));
  }

  addEvents() {
    this.eventWrapper.mousedown = this.mousedown.bind(this);
    this.eventWrapper.input = this.input.bind(this);
    this.eventWrapper.keyup = this.keyup.bind(this);
    this.eventWrapper.keydown = this.keydown.bind(this);

    this.trigger.addEventListener('mousedown', this.eventWrapper.mousedown);
    this.trigger.addEventListener('input', this.eventWrapper.input);
    this.trigger.addEventListener('keyup', this.eventWrapper.keyup);
    this.trigger.addEventListener('keydown', this.eventWrapper.keydown);
  }

  removeEvents() {
    this.hasRemovedEvents = true;

    this.trigger.removeEventListener('mousedown', this.eventWrapper.mousedown);
    this.trigger.removeEventListener('input', this.eventWrapper.input);
    this.trigger.removeEventListener('keyup', this.eventWrapper.keyup);
    this.trigger.removeEventListener('keydown', this.eventWrapper.keydown);
  }

  input(e) {
    if (this.hasRemovedEvents) return;

    this.list.show();

    const inputEvent = new CustomEvent('input.dl', {
      detail: {
        hook: this,
        text: e.target.value,
      },
      bubbles: true,
      cancelable: true,
    });
    e.target.dispatchEvent(inputEvent);
  }

  mousedown(e) {
    if (this.hasRemovedEvents) return;

    const mouseEvent = new CustomEvent('mousedown.dl', {
      detail: {
        hook: this,
        text: e.target.value,
      },
      bubbles: true,
      cancelable: true,
    });
    e.target.dispatchEvent(mouseEvent);
  }

  keyup(e) {
    if (this.hasRemovedEvents) return;

    this.keyEvent(e, 'keyup.dl');
  }

  keydown(e) {
    if (this.hasRemovedEvents) return;

    this.keyEvent(e, 'keydown.dl');
  }

  keyEvent(e, eventName) {
    this.list.show();

    const keyEvent = new CustomEvent(eventName, {
      detail: {
        hook: this,
        text: e.target.value,
        which: e.which,
        key: e.key,
      },
      bubbles: true,
      cancelable: true,
    });
    e.target.dispatchEvent(keyEvent);
  }

  restoreInitialState() {
    this.list.list.innerHTML = this.list.initialState;
  }

  removePlugins() {
    this.plugins.forEach(plugin => plugin.destroy());
  }

  destroy() {
    this.restoreInitialState();

    this.removeEvents();
    this.removePlugins();

    this.list.destroy();
  }
}

export default HookInput;