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import { onNodeRemove } from './helpers.ts'import { tick, _render } from './core.ts'import { _state } from './state.ts'
export class Component<P extends Object = any, S = any> {  public props: P  public id: string  private _elements: HTMLElement[] = []  private _skipUnmount = false  private _hasUnmounted = false
  constructor(props: P) {    this.props = props || {}    this.id = this._getHash()  }
  public static get isClass() {    return true  }
  public get isClass() {    return true  }
  setState(state: S, shouldUpdate: boolean = false) {    const isObject = typeof state === 'object' && state !== null
    // if state is an object, we merge the objects    if (isObject && this.state !== undefined) this.state = { ...this.state, ...state }    // else, we just overwrite it    else this.state = state
    if (shouldUpdate) this.update()  }
  set state(state: S) {    _state.set(this.id, state)  }
  get state() {    return _state.get(this.id) as S  }
  set initState(state: S) {    if (this.state === undefined) this.state = state  }
  /** Returns all currently rendered node elements */  public get elements(): HTMLElement[] {    return this._elements || []  }
  public set elements(elements: HTMLElement[]) {    if (!Array.isArray(elements)) elements = [elements]
    elements.forEach(element => {      this._elements.push(element)    })  }
  private _addNodeRemoveListener() {    // check if didUnmount is unused    if (/^[^{]+{\s+}$/gm.test(this.didUnmount.toString())) return
    // listen if the root elements gets removed    onNodeRemove(this.elements[0], () => {      if (!this._skipUnmount) this._didUnmount()    })  }
  // @ts-ignore  private _didMount(): any {    this._addNodeRemoveListener()    this.didMount()  }
  private _willUpdate(): any {    this.willUpdate()  }
  private _didUpdate(): any {    this.didUpdate()  }
  private _didUnmount(): any {    if (this._hasUnmounted) return    this.didUnmount()    this._hasUnmounted = true  }
  public willMount(): any {}  public didMount(): any {}  public willUpdate(): any {}  public didUpdate(): any {}  public didUnmount(): any {}
  public render(_update?: any): HTMLElement | void {}
  /** Will forceRender the component */  public update(update?: any) {    this._skipUnmount = true    this._willUpdate()    // get all current rendered node elements    const oldElements = [...this.elements]
    // clear    this._elements = []
    let el = this.render(update)    el = _render(el)    this.elements = el as any
    // console.log('old: ', oldElements)    // console.log('new: ', this.elements)
    // get valid parent node    const parent = oldElements[0].parentElement as HTMLElement
    // make sure we have a parent    if (!parent) console.warn('Component needs a parent element to get updated!')
    // add all new node elements    this.elements.forEach((child: HTMLElement) => {      if (parent) parent.insertBefore(child, oldElements[0])    })
    // remove all elements    oldElements.forEach((child: HTMLElement) => {      // wee keep the element if it is the same, for example if passed as a child      if (!this.elements.includes(child)) {        child.remove()        // @ts-ignore        child = null      }    })
    // listen for node removal    this._addNodeRemoveListener()
    // @ts-ignore    tick(() => {      this._skipUnmount = false      if (!this.elements[0].isConnected) this._didUnmount()      else this._didUpdate()    })  }
  private _getHash(): any {}}