/*
 * Copyright (C) 2026 Fluxer Contributors
 *
 * This file is part of Fluxer.
 *
 * Fluxer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Fluxer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
 */

import initLibfluxcore, * as wasm from '@pkgs/libfluxcore/libfluxcore';

let modulePromise: Promise<void> | null = null;

async function loadModule(): Promise<void> {
	if (!modulePromise) {
		modulePromise = (async () => {
			if (typeof initLibfluxcore === 'function') {
				await initLibfluxcore();
			}
		})();
	}
	await modulePromise;
}

export async function ensureLibfluxcoreReady(): Promise<void> {
	await loadModule();
}

export function cropAndRotateGif(
	gif: Uint8Array,
	x: number,
	y: number,
	width: number,
	height: number,
	rotation: number,
	resizeWidth: number | null,
	resizeHeight: number | null,
): Uint8Array {
	const result = wasm.crop_and_rotate_gif(gif, x, y, width, height, rotation, resizeWidth, resizeHeight);
	return result instanceof Uint8Array ? result : new Uint8Array(result);
}