/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as fs from 'fs';
import * as vscode from 'vscode';

export async function directoryExist(directoryPath: string): Promise<boolean> {
	const stats = await getFileStatus(directoryPath);
	return stats ? stats.isDirectory() : false;
}

export async function fileExist(filePath: string): Promise<boolean> {
	const stats = await getFileStatus(filePath);
	return stats ? stats.isFile() : false;
}

async function getFileStatus(path: string): Promise<fs.Stats | undefined> {
	try {
		const stats = await fs.promises.stat(path);
		return stats;
	}
	catch (e) {
		if (e.code === 'ENOENT') {
			return undefined;
		}
		else {
			throw e;
		}
	}
}

/**
 * if the current workspace is untitled, the returned URI of vscode.workspace.workspaceFile will use the `untitled` scheme
 */
export function isCurrentWorkspaceUntitled(): boolean {
	return !!vscode.workspace.workspaceFile && vscode.workspace.workspaceFile.scheme.toLowerCase() === 'untitled';
}

export interface IPackageInfo {
	name: string;
	version: string;
	aiKey: string;
}

export function getPackageInfo(packageJson: any): IPackageInfo | undefined {
	if (packageJson) {
		return {
			name: packageJson.name,
			version: packageJson.version,
			aiKey: packageJson.aiKey
		};
	}

	return undefined;
}