import { AxentixComponent, Component } from '../../utils/component';
import { instances, registerComponent } from '../../utils/config';
import { createEvent, getComponentOptions, getInstanceByType, getTriggers } from '../../utils/utilities';

interface ICollapsibleOptions {
  animationDuration?: number;
  sidenav?: {
    activeClass?: boolean;
    activeWhenOpen?: boolean;
    autoClose?: boolean;
  };
}

const CollapsibleOptions: ICollapsibleOptions = {
  animationDuration: 300,
  sidenav: {
    activeClass: true,
    activeWhenOpen: true,
    autoClose: true,
  },
};

export class Collapsible extends AxentixComponent implements Component {
  static getDefaultOptions = () => CollapsibleOptions;

  options: ICollapsibleOptions;

  #triggers: Array<HTMLElement>;
  #sidenavTriggers: Array<HTMLElement>;
  #isInit = true;
  #isActive = false;
  #isAnimated = false;
  #childIsActive = false;
  #listenerRef: any;
  #resizeRef: any;
  #sidenavId: string;

  constructor(element: string, options?: ICollapsibleOptions) {
    super();

    try {
      this.preventDbInstance(element);
      instances.push({ type: 'Collapsible', instance: this });

      this.el = document.querySelector(element);

      this.options = getComponentOptions('Collapsible', options, this.el);

      this.setup();
    } catch (error) {
      console.error('[Axentix] Collapsible init error', error);
    }
  }

  setup() {
    createEvent(this.el, 'collapsible.setup');

    this.#triggers = getTriggers(this.el.id);
    this.#isInit = true;
    this.#isActive = this.el.classList.contains('active') ? true : false;
    this.#isAnimated = false;
    this.#sidenavId = '';
    this.#childIsActive = false;

    this.setupListeners();
    this.el.style.transitionDuration = this.options.animationDuration + 'ms';

    this.#detectSidenav();

    this.#childIsActive = this.el.querySelector('.active') ? true : false;
    if (this.options.sidenav.activeClass) this.#addActiveInSidenav();

    if (this.#isActive) this.open();
    this.#isInit = false;
  }

  setupListeners() {
    this.#listenerRef = this.#onClickTrigger.bind(this);
    this.#triggers.forEach((trigger) => trigger.addEventListener('click', this.#listenerRef));

    this.#resizeRef = this.#handleResize.bind(this);
    window.addEventListener('resize', this.#resizeRef);
  }

  removeListeners() {
    this.#triggers.forEach((trigger) => trigger.removeEventListener('click', this.#listenerRef));
    this.#listenerRef = undefined;

    window.removeEventListener('resize', this.#resizeRef);
    this.#resizeRef = undefined;
  }

  #handleResize() {
    if (this.#isActive && !this.#sidenavId) this.el.style.maxHeight = this.el.scrollHeight + 'px';
  }

  #detectSidenav() {
    const sidenavElem = this.el.closest('.sidenav');

    if (sidenavElem) {
      this.#sidenavId = sidenavElem.id;
      this.#sidenavTriggers = this.#triggers.filter((t) => t.closest('.sidenav')?.id === sidenavElem.id);
    }
  }

  #addActiveInSidenav() {
    if (!this.#childIsActive || !this.#sidenavId) return;

    this.#sidenavTriggers.forEach((trigger) => trigger.classList.add('active'));

    this.el.classList.add('active');
    this.open();
    this.#isActive = true;
  }

  /** Enable / disable active state to trigger when collapsible is in sidenav */
  #toggleTriggerActive(state: boolean) {
    if (!this.#sidenavId) return;

    this.#sidenavTriggers.forEach((trigger) => {
      if (state) trigger.classList.add('active');
      else trigger.classList.remove('active');
    });
  }

  #autoClose() {
    if (!this.#isInit && this.#sidenavId) {
      getInstanceByType('Collapsible').forEach((collapsible: Collapsible) => {
        if (collapsible.#sidenavId === this.#sidenavId && collapsible.el.id !== this.el.id)
          collapsible.close();
      });
    }
  }

  #applyOverflow() {
    this.el.style.overflow = 'hidden';
    setTimeout(() => {
      this.el.style.overflow = '';
    }, this.options.animationDuration);
  }

  #onClickTrigger(e: Event) {
    e.preventDefault();
    if (this.#isAnimated) return;

    if (this.#isActive) this.close();
    else this.open();
  }

  /** Open collapsible */
  open() {
    if (this.#isActive && !this.#isInit) return;

    createEvent(this.el, 'collapsible.open');
    this.#isActive = true;
    this.#isAnimated = true;
    this.el.style.display = 'block';
    this.#applyOverflow();
    this.el.style.maxHeight = this.el.scrollHeight + 'px';

    if (this.options.sidenav.activeWhenOpen) this.#toggleTriggerActive(true);
    if (this.options.sidenav.autoClose) this.#autoClose();

    setTimeout(() => {
      this.#isAnimated = false;
    }, this.options.animationDuration);
  }

  /** Close collapsible */
  close() {
    if (!this.#isActive) return;

    createEvent(this.el, 'collapsible.close');
    this.#isAnimated = true;
    this.el.style.maxHeight = '';
    this.#applyOverflow();

    if (this.options.sidenav.activeWhenOpen) this.#toggleTriggerActive(false);

    setTimeout(() => {
      this.el.style.display = '';
      this.#isAnimated = false;
      this.#isActive = false;
    }, this.options.animationDuration);
  }
}

registerComponent({
  class: Collapsible,
  name: 'Collapsible',
  dataDetection: true,
  autoInit: {
    enabled: true,
    selector: '.collapsible',
  },
});