import type { JSX, ValidComponent } from "@solidjs/web";
import { dynamic } from "@solidjs/web";
import { createSignal, 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";
import { ComboboxGroupContext } from "./group-context";

export type ComboboxGroupState = Record<string, never>;

export interface ComboboxGroupProps
	extends BaseUIComponentProps<"div", ComboboxGroupState> {
	as?: ValidComponent;
}

const EMPTY_STATE: ComboboxGroupState = {};

/**
 * Groups related items with the corresponding label. Renders a `<div>`.
 */
export function ComboboxGroup(props: ComboboxGroupProps): JSX.Element {
	const [labelId, setLabelId] = createSignal<string | undefined>(undefined, {
		ownedWrite: true,
	});

	const internal = {
		role: "group" as const,
		get "aria-labelledby"() {
			return labelId() ?? "";
		},
	};

	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 ?? "div");
	return (
		<ComboboxGroupContext value={{ labelId, setLabelId }}>
			<Tag {...merged} ref={composeRefs(userRef(props))} />
		</ComboboxGroupContext>
	);
}