import type { JSX, ValidComponent } from "@solidjs/web";
/**
 * `<Dialog.Backdrop>` — the consumer-styleable overlay beneath the popup.
 */

import { dynamic } from "@solidjs/web";
import { createMemo, omit, Show } from "solid-js";
import { composeRefs, userRef } from "../../internals/compose-refs";
import { mergeRootProps } from "../../internals/merge-root-props";
import { resolveClassStyle } from "../../internals/resolve-class-style";
import type { BaseUIComponentProps } from "../../internals/types";
import type { TransitionStatus } from "../../internals/use-transition-status/use-transition-status";
import { useDialogRootContext } from "../dialog-root-context";

export interface DialogBackdropState {
	open: boolean;
	transitionStatus: TransitionStatus;
}

export interface DialogBackdropProps
	extends BaseUIComponentProps<"div", DialogBackdropState> {
	/**
	 * Tag/component to render. Defaults to `"div"`. Replaces the
	 * pre-spike `render` prop (axis G).
	 */
	as?: ValidComponent;
	/** @default false */
	forceRender?: boolean | undefined;
}

/**
 * An overlay displayed beneath the dialog popup.
 */
export function DialogBackdrop(props: DialogBackdropProps): JSX.Element {
	const root = useDialogRootContext();

	const state = createMemo<DialogBackdropState>(() => ({
		open: root.open(),
		transitionStatus: root.transitionStatus(),
	}));

	const setBackdropRef = (el: HTMLDivElement | null): void => {
		root.backdropRef.current = el;
	};

	const enabled = (): boolean => Boolean(props.forceRender) || !root.nested();

	const internal = {
		role: "presentation",
		get hidden() {
			return !root.mounted();
		},
		style: {
			"user-select": "none",
			"-webkit-user-select": "none",
		},
		get "data-open"() {
			return state().open ? "" : undefined;
		},
		get "data-closed"() {
			return state().open ? undefined : "";
		},
		get "data-starting-style"() {
			return state().transitionStatus === "starting" ? "" : undefined;
		},
		get "data-ending-style"() {
			return state().transitionStatus === "ending" ? "" : undefined;
		},
	};

	const userClassStyle = resolveClassStyle(props, () => state());

	const userProps = omit(
		props,
		"as",
		"class",
		"style",
		"attrs",

		"forceRender",
	);

	let merged: Record<string, unknown> = mergeRootProps(
		internal,
		userClassStyle,
	);
	merged = mergeRootProps(merged, userProps);

	const Tag = dynamic(() => props.as ?? "div");
	return (
		<Show when={enabled()}>
			<Tag {...merged} ref={composeRefs(setBackdropRef, userRef(props))} />
		</Show>
	);
}