import { Popover as Kobalte } from "@kobalte/core/popover"
import {
  ComponentProps,
  JSXElement,
  ParentProps,
  Show,
  createEffect,
  createSignal,
  onCleanup,
  splitProps,
  ValidComponent,
} from "solid-js"
import { useI18n } from "../context/i18n"
import { IconButton } from "./icon-button"

export interface PopoverProps<T extends ValidComponent = "div">
  extends ParentProps,
    Omit<ComponentProps<typeof Kobalte>, "children"> {
  trigger?: JSXElement
  triggerAs?: T
  triggerProps?: ComponentProps<T>
  title?: JSXElement
  description?: JSXElement
  class?: ComponentProps<"div">["class"]
  classList?: ComponentProps<"div">["classList"]
  style?: ComponentProps<"div">["style"]
  portal?: boolean
}

export function Popover<T extends ValidComponent = "div">(props: PopoverProps<T>) {
  const i18n = useI18n()
  const [local, rest] = splitProps(props, [
    "trigger",
    "triggerAs",
    "triggerProps",
    "title",
    "description",
    "class",
    "classList",
    "style",
    "children",
    "portal",
    "open",
    "defaultOpen",
    "onOpenChange",
    "modal",
  ])

  const [contentRef, setContentRef] = createSignal<HTMLElement | undefined>(undefined)
  const [triggerRef, setTriggerRef] = createSignal<HTMLElement | undefined>(undefined)
  const [dismiss, setDismiss] = createSignal<"escape" | "outside" | null>(null)

  const [uncontrolledOpen, setUncontrolledOpen] = createSignal<boolean>(local.defaultOpen ?? false)

  const controlled = () => local.open !== undefined
  const opened = () => {
    if (controlled()) return local.open ?? false
    return uncontrolledOpen()
  }

  const onOpenChange = (next: boolean) => {
    if (next) setDismiss(null)
    if (local.onOpenChange) local.onOpenChange(next)
    if (controlled()) return
    setUncontrolledOpen(next)
  }

  createEffect(() => {
    if (!opened()) return

    const inside = (node: Node | null | undefined) => {
      if (!node) return false
      const content = contentRef()
      if (content && content.contains(node)) return true
      const trigger = triggerRef()
      if (trigger && trigger.contains(node)) return true
      return false
    }

    const close = (reason: "escape" | "outside") => {
      setDismiss(reason)
      onOpenChange(false)
    }

    const onKeyDown = (event: KeyboardEvent) => {
      if (event.key !== "Escape") return
      close("escape")
      event.preventDefault()
      event.stopPropagation()
    }

    const onPointerDown = (event: PointerEvent) => {
      const target = event.target
      if (!(target instanceof Node)) return
      if (inside(target)) return
      close("outside")
    }

    const onFocusIn = (event: FocusEvent) => {
      const target = event.target
      if (!(target instanceof Node)) return
      if (inside(target)) return
      close("outside")
    }

    window.addEventListener("keydown", onKeyDown, true)
    window.addEventListener("pointerdown", onPointerDown, true)
    window.addEventListener("focusin", onFocusIn, true)

    onCleanup(() => {
      window.removeEventListener("keydown", onKeyDown, true)
      window.removeEventListener("pointerdown", onPointerDown, true)
      window.removeEventListener("focusin", onFocusIn, true)
    })
  })

  const content = () => (
    <Kobalte.Content
      ref={(el: HTMLElement | undefined) => setContentRef(el)}
      data-component="popover-content"
      classList={{
        ...(local.classList ?? {}),
        [local.class ?? ""]: !!local.class,
      }}
      style={local.style}
      onCloseAutoFocus={(event: Event) => {
        if (dismiss() === "outside") event.preventDefault()
        setDismiss(null)
      }}
    >
      {/* <Kobalte.Arrow data-slot="popover-arrow" /> */}
      <Show when={local.title}>
        <div data-slot="popover-header">
          <Kobalte.Title data-slot="popover-title">{local.title}</Kobalte.Title>
          <Kobalte.CloseButton
            data-slot="popover-close-button"
            as={IconButton}
            icon="close"
            variant="ghost"
            aria-label={i18n.t("ui.common.close")}
          />
        </div>
      </Show>
      <Show when={local.description}>
        <Kobalte.Description data-slot="popover-description">{local.description}</Kobalte.Description>
      </Show>
      <div data-slot="popover-body">{local.children}</div>
    </Kobalte.Content>
  )

  return (
    <Kobalte gutter={4} {...rest} open={opened()} onOpenChange={onOpenChange} modal={local.modal ?? false}>
      <Kobalte.Trigger
        ref={(el: HTMLElement) => setTriggerRef(el)}
        as={local.triggerAs ?? "div"}
        data-slot="popover-trigger"
        {...(local.triggerProps as any)}
      >
        {local.trigger}
      </Kobalte.Trigger>
      <Show when={local.portal ?? true} fallback={content()}>
        <Kobalte.Portal>{content()}</Kobalte.Portal>
      </Show>
    </Kobalte>
  )
}