/*
 * Copyright 2010-2020 Gildas Lormeau
 * contact : gildas.lormeau <at> gmail.com
 * 
 * This file is part of SingleFile.
 *
 *   The code in this file is free software: you can redistribute it and/or 
 *   modify it under the terms of the GNU Affero General Public License 
 *   (GNU AGPL) as published by the Free Software Foundation, either version 3
 *   of the License, or (at your option) any later version.
 * 
 *   The code in this file 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.
 *
 *   As additional permission under GNU AGPL version 3 section 7, you may 
 *   distribute UNMODIFIED VERSIONS OF THIS file without the copy of the GNU 
 *   AGPL normally required by section 4, provided you include this license 
 *   notice and a URL through which recipients can access the Corresponding 
 *   Source.
 */

/* global GitHub */

export { pushGitHub };

let pendingPush;

async function pushGitHub(token, userName, repositoryName, branchName, path, content) {
	while (pendingPush) {
		await pendingPush;
	}
	pendingPush = async () => {
		try {
			const api = new GitHub({ token });
			const repository = api.getRepo(userName, repositoryName);
			const ref = await repository.getRef("heads/" + branchName);
			const commitSHA = ref.data.object.sha;
			let commit = await repository.getCommit(commitSHA);
			const tree = await repository.createTree([{ path, content, mode: "100644" }], commit.data.tree.sha);
			commit = await repository.commit(commitSHA, tree.data.sha, "");
			await repository.updateHead("heads/" + branchName, commit.data.sha);
		} finally {
			pendingPush = null;
		}
	};
	await pendingPush();
}