import { useTippy } from '../composables'
import { Directive } from 'vue'

const directive: Directive = {
  mounted(el, binding, vnode) {
    const opts = typeof binding.value === "string" ? { content: binding.value } : binding.value || {}

    const modifiers = Object.keys(binding.modifiers || {})
    const placement = modifiers.find(modifier => modifier !== 'arrow')
    const withArrow = modifiers.findIndex(modifier => modifier === 'arrow') !== -1

    if (placement) {
      opts.placement = opts.placement || placement
    }

    if (withArrow) {
      opts.arrow = opts.arrow !== undefined ? opts.arrow : true
    }

    if (vnode.props && vnode.props.onTippyShow) {
      opts.onShow = function (...args: any[]) {
        return vnode.props?.onTippyShow(...args)
      }
    }

    if (vnode.props && vnode.props.onTippyShown) {
      opts.onShown = function (...args: any[]) {
        return vnode.props?.onTippyShown(...args)
      }
    }

    if (vnode.props && vnode.props.onTippyHidden) {
      opts.onHidden = function (...args: any[]) {
        return vnode.props?.onTippyHidden(...args)
      }
    }

    if (vnode.props && vnode.props.onTippyHide) {
      opts.onHide = function (...args: any[]) {
        return vnode.props?.onTippyHide(...args)
      }
    }

    if (vnode.props && vnode.props.onTippyMount) {
      opts.onMount = function (...args: any[]) {
        return vnode.props?.onTippyMount(...args)
      }
    }

    if (el.getAttribute('title') && !opts.content) {
      opts.content = el.getAttribute('title')
      el.removeAttribute('title')
    }

    if (el.getAttribute('content') && !opts.content) {
      opts.content = el.getAttribute('content')
    }

    useTippy(el, opts)
  },
  unmounted(el) {
    if (el.$tippy) {
      el.$tippy.destroy()
    } else if (el._tippy) {
      el._tippy.destroy()
    }
  },

  updated(el, binding) {
    const opts = typeof binding.value === "string" ? { content: binding.value } : binding.value || {}
    
    // any kind of falsy content value, even undefined, should be treated as null - 'no tooltip to show'
    if (!opts.content) {
      opts.content = null
    }

    if (el.getAttribute('title') && !opts.content) {
      opts.content = el.getAttribute('title')
      el.removeAttribute('title')
    }

    if (el.getAttribute('content') && !opts.content) {
      opts.content = el.getAttribute('content')
    }

    if (el.$tippy) {
      el.$tippy.setProps(opts || {})
    } else if (el._tippy) {
      el._tippy.setProps(opts || {})
    }
  },
}

export default directive