import type { JSX, ValidComponent } from "@solidjs/web";
import { dynamic } from "@solidjs/web";
import { omit } 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";

export type ComboboxIconState = Record<string, never>;

export interface ComboboxIconProps
	extends BaseUIComponentProps<"span", ComboboxIconState> {
	/**
	 * Tag/component to render. Defaults to `"span"`. Replaces the
	 * pre-spike `render` prop (axis G).
	 */
	as?: ValidComponent;
}

const EMPTY_STATE: ComboboxIconState = {};

/**
 * A presentational icon indicating that the trigger button opens the popup.
 * Renders a `<span>` element.
 */
export function ComboboxIcon(props: ComboboxIconProps): JSX.Element {
	const internal = {
		"aria-hidden": true,
		children: "▼" as JSX.Element,
	};

	const userClassStyle = resolveClassStyle(props, () => EMPTY_STATE);
	const userProps = omit(props, "as", "class", "style", "attrs");

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

	const Tag = dynamic(() => props.as ?? "span");
	return <Tag {...merged} ref={composeRefs(userRef(props))} />;
}