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// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com>
// SPDX-License-Identifier: AGPL-3.0-only

import { Slot } from "@radix-ui/themes";
import { type FC, type ReactNode, useCallback, useMemo } from "react";

import { UpdateSelection, UpdateSelectionContext } from "./UpdateSelectionContext.ts";
import { GridSizeContext } from "./GridSizeContext.ts";
import { SelectionContext } from "./SelectionContext.ts";
import { getSelectedCells } from "./helpers.ts";
import type { GridSize, Selection } from "./types.ts";

export interface RootProps extends GridSize {
	children: ReactNode;

	asChild?: boolean;

	selection: Selection;

	onSelectionChange?(selection: Selection): void;
}

export const Root: FC<RootProps> = ({
	asChild,
	children,
	rows,
	columns,
	selection,
	onSelectionChange,
}) => {
	const Component = asChild ? Slot : "div";

	const updater = useCallback<UpdateSelection>(
		(callback) => {
			if (!onSelectionChange) {
				return;
			}

			const next = callback(selection);

			onSelectionChange?.({
				...next,
				cells: getSelectedCells(next),
			});
		},
		[selection, onSelectionChange],
	);

	const size = useMemo<GridSize>(() => {
		return { rows, columns };
	}, [rows, columns]);

	return (
		<SelectionContext.Provider value={selection}>
			<GridSizeContext.Provider value={size}>
				<UpdateSelectionContext.Provider value={updater}>
					<Component role="grid" aria-multiselectable>
						{children}
					</Component>
				</UpdateSelectionContext.Provider>
			</GridSizeContext.Provider>
		</SelectionContext.Provider>
	);
};