ArchiSteamFarm/ArchiSteamFarm/Utilities.cs

/*
    _                _      _  ____   _                           _____
   / \    _ __  ___ | |__  (_)/ ___| | |_  ___   __ _  _ __ ___  |  ___|__ _  _ __  _ __ ___
  / _ \  | '__|/ __|| '_ \ | |\___ \ | __|/ _ \ / _` || '_ ` _ \ | |_  / _` || '__|| '_ ` _ \
 / ___ \ | |  | (__ | | | || | ___) || |_|  __/| (_| || | | | | ||  _|| (_| || |   | | | | | |
/_/   \_\|_|   \___||_| |_||_||____/  \__|\___| \__,_||_| |_| |_||_|   \__,_||_|   |_| |_| |_|

 Copyright 2015-2017 Łukasz "JustArchi" Domeradzki
 Contact: JustArchi@JustArchi.net

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0
					
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

*/

using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Linq;
using System.Net;
using System.Runtime.CompilerServices;
using System.Text;
using Humanizer;

namespace ArchiSteamFarm {
	internal static class Utilities {
		//private static readonly Random Random = new Random();

		[MethodImpl(MethodImplOptions.AggressiveInlining)]
		[SuppressMessage("ReSharper", "UnusedParameter.Global")]
		internal static void Forget(this object obj) { }

		internal static string GetArgsAsString(this string[] args, byte argsToSkip = 1) {
			if (args.Length >= argsToSkip) {
				return string.Join(" ", args.GetArgs(argsToSkip));
			}

			ASF.ArchiLogger.LogNullError(nameof(args));
			return null;
		}

		internal static string GetCookieValue(this CookieContainer cookieContainer, string url, string name) {
			if (string.IsNullOrEmpty(url) || string.IsNullOrEmpty(name)) {
				ASF.ArchiLogger.LogNullError(nameof(url) + " || " + nameof(name));
				return null;
			}

			Uri uri;

			try {
				uri = new Uri(url);
			} catch (UriFormatException e) {
				ASF.ArchiLogger.LogGenericException(e);
				return null;
			}

			CookieCollection cookies = cookieContainer.GetCookies(uri);
			return cookies.Count != 0 ? (from Cookie cookie in cookies where cookie.Name.Equals(name) select cookie.Value).FirstOrDefault() : null;
		}

		internal static uint GetUnixTime() => (uint) DateTimeOffset.UtcNow.ToUnixTimeSeconds();

		/*
		internal static int RandomNext(int maxWithout) {
			if (maxWithout <= 0) {
				ASF.ArchiLogger.LogNullError(nameof(maxWithout));
				return -1;
			}

			if (maxWithout == 1) {
				return 0;
			}

			lock (Random) {
				return Random.Next(maxWithout);
			}
		}
		*/

		internal static bool IsValidHexadecimalString(string text) {
			if (string.IsNullOrEmpty(text)) {
				ASF.ArchiLogger.LogNullError(nameof(text));
				return false;
			}

			const byte split = 16;
			for (byte i = 0; i < text.Length; i += split) {
				string textPart = string.Join("", text.Skip(i).Take(split));

				if (!ulong.TryParse(textPart, NumberStyles.HexNumber, null, out _)) {
					return false;
				}
			}

			return true;
		}

		internal static IEnumerable<T> ToEnumerable<T>(this T item) {
			yield return item;
		}

		internal static string ToHumanReadable(this TimeSpan timeSpan) {
			// TODO: Remove this awful hack once we get rid of ILRepack in .NET core, Humanize() should always work
			try {
				return timeSpan.Humanize(3);
			} catch (ArgumentException) {
				StringBuilder result = new StringBuilder();

				if (timeSpan.Days > 0) {
					result.Append(timeSpan.Days + " " + (timeSpan.Days > 1 ? "days" : "day") + ", ");
				}

				if (timeSpan.Hours > 0) {
					result.Append(timeSpan.Hours + " " + (timeSpan.Hours > 1 ? "hours" : "hour") + ", ");
				}

				if (timeSpan.Minutes > 0) {
					result.Append(timeSpan.Minutes + " " + (timeSpan.Minutes > 1 ? "minutes" : "minute") + ", ");
				}

				if (timeSpan.Seconds > 0) {
					result.Append(timeSpan.Seconds + " " + (timeSpan.Seconds > 1 ? "seconds" : "second") + ", ");
				}

				if (result.Length == 0) {
					return "0 seconds";
				}

				// Get rid of last comma + space
				result.Length -= 2;

				return result.ToString();
			}
		}

		private static string[] GetArgs(this string[] args, byte argsToSkip = 1) {
			if (args.Length < argsToSkip) {
				ASF.ArchiLogger.LogNullError(nameof(args));
				return null;
			}

			byte argsToCopy = (byte) (args.Length - argsToSkip);

			string[] result = new string[argsToCopy];

			if (argsToCopy > 0) {
				Array.Copy(args, argsToSkip, result, 0, argsToCopy);
			}

			return result;
		}
	}
}