/*
 * HSTogglePassword
 * @version: 3.0.1
 * @author: Preline Labs Ltd.
 * @license: Licensed under MIT and Preline UI Fair Use License (https://preline.co/docs/license.html)
 * Copyright 2024 Preline Labs Ltd.
 */

import { isFormElement, dispatch } from '../../utils'

import { ITogglePasswordOptions, ITogglePassword } from './interfaces'

import HSBasePlugin from '../base-plugin'
import { ICollectionItem } from '../../interfaces'

class HSTogglePassword extends HSBasePlugin<ITogglePasswordOptions> implements ITogglePassword {
  private readonly target: string | string[] | HTMLInputElement | HTMLInputElement[] | null
  private isShown: boolean
  private isMultiple: boolean
  private eventType: string

  private onElementActionListener: () => void

  constructor(el: HTMLElement, options?: ITogglePasswordOptions) {
    super(el, options)

    const data = el.getAttribute('data-toggle-password')
    const dataOptions: ITogglePasswordOptions = data ? JSON.parse(data) : {}
    const concatOptions = {
      ...dataOptions,
      ...options
    }
    const targets: HTMLInputElement[] = []
    if (concatOptions?.target && typeof concatOptions?.target === 'string') {
      const ids = concatOptions?.target.split(',')
      ids.forEach(id => {
        targets.push(document.querySelector(id) as HTMLInputElement)
      })
    } else if (concatOptions?.target && typeof concatOptions?.target === 'object') {
      ;(concatOptions.target as string[]).forEach(el => targets.push(document.querySelector(el)))
    } else {
      ;(concatOptions.target as HTMLInputElement[]).forEach(el => targets.push(el))
    }

    this.target = targets
    this.isShown = this.el.hasAttribute('type') ? (this.el as HTMLInputElement).checked : false
    this.eventType = isFormElement(this.el) ? 'change' : 'click'
    this.isMultiple = this.target.length > 1 && !!this.el.closest('[data-toggle-password-group]')

    if (this.target) this.init()
  }

  private elementAction() {
    if (this.isShown) {
      this.hide()
    } else {
      this.show()
    }

    this.fireEvent('toggle', this.target)
    dispatch('toggle.toggle-select', this.el, this.target)
  }

  private init() {
    this.createCollection(window.$hsTogglePasswordCollection, this)

    if (!this.isShown) {
      this.hide()
    } else {
      this.show()
    }

    this.onElementActionListener = () => this.elementAction()

    this.el.addEventListener(this.eventType, this.onElementActionListener)
  }

  private getMultipleToggles(): HSTogglePassword[] {
    const group = this.el.closest('[data-toggle-password-group]')
    const toggles = group.querySelectorAll('[data-toggle-password]')
    const togglesInCollection: HSTogglePassword[] = []

    toggles.forEach((el: HTMLElement) => {
      togglesInCollection.push(HSTogglePassword.getInstance(el) as HSTogglePassword)
    })

    return togglesInCollection
  }

  // Public methods
  public show() {
    if (this.isMultiple) {
      const toggles = this.getMultipleToggles()

      toggles.forEach((el: HSTogglePassword) => (el ? (el.isShown = true) : false))

      this.el.closest('[data-toggle-password-group]').classList.add('active')
    } else {
      this.isShown = true

      this.el.classList.add('active')
    }
    ;(this.target as HTMLInputElement[]).forEach(el => {
      ;(el as HTMLInputElement).type = 'text'
    })
  }

  public hide() {
    if (this.isMultiple) {
      const toggles = this.getMultipleToggles()

      toggles.forEach((el: HSTogglePassword) => (el ? (el.isShown = false) : false))

      this.el.closest('[data-toggle-password-group]').classList.remove('active')
    } else {
      this.isShown = false

      this.el.classList.remove('active')
    }
    ;(this.target as HTMLInputElement[]).forEach(el => {
      ;(el as HTMLInputElement).type = 'password'
    })
  }

  public destroy() {
    // Remove classes
    if (this.isMultiple) {
      this.el.closest('[data-toggle-password-group]').classList.remove('active')
    } else {
      this.el.classList.remove('active')
    }

    // Remove attributes
    ;(this.target as HTMLInputElement[]).forEach(el => {
      ;(el as HTMLInputElement).type = 'password'
    })

    // Remove listeners
    this.el.removeEventListener(this.eventType, this.onElementActionListener)

    this.isShown = false

    window.$hsTogglePasswordCollection = window.$hsTogglePasswordCollection.filter(
      ({ element }) => element.el !== this.el
    )
  }

  // Static methods
  static getInstance(target: HTMLElement | string, isInstance?: boolean) {
    const elInCollection = window.$hsTogglePasswordCollection.find(
      el => el.element.el === (typeof target === 'string' ? document.querySelector(target) : target)
    )

    return elInCollection ? (isInstance ? elInCollection : elInCollection.element) : null
  }

  static autoInit() {
    if (!window.$hsTogglePasswordCollection) window.$hsTogglePasswordCollection = []

    if (window.$hsTogglePasswordCollection)
      window.$hsTogglePasswordCollection = window.$hsTogglePasswordCollection.filter(({ element }) =>
        document.contains(element.el)
      )

    document.querySelectorAll('[data-toggle-password]:not(.--prevent-on-load-init)').forEach((el: HTMLInputElement) => {
      if (!window.$hsTogglePasswordCollection.find(elC => (elC?.element?.el as HTMLElement) === el))
        new HSTogglePassword(el)
    })
  }
}

declare global {
  interface Window {
    HSTogglePassword: Function
    $hsTogglePasswordCollection: ICollectionItem<HSTogglePassword>[]
  }
}

window.addEventListener('load', () => {
  HSTogglePassword.autoInit()

  // Uncomment for debug
  // console.log('Toggle password collection:', window.$hsTogglePasswordCollection);
})

if (typeof window !== 'undefined') {
  window.HSTogglePassword = HSTogglePassword
}

export default HSTogglePassword