//
// GetUtils.GetRandomNumbers.cs
//
// Author:
//       Kay Stuckenschmidt 
//
// Copyright (c) 2017 responsive-kaysta
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Security.Cryptography;
using InMemoryLoaderBase;

namespace PowerUpGetUtils
{
    /// <summary>
    /// GetUtils
    /// </summary>
    public partial class GetUtils : AbstractComponent
    {
        /// <summary>
        /// Erzeugt echte Zufallszahlen
        /// </summary>
        /// <param name="count">Anzahl der zu erzeugenden Zufallszahlen</param>
        /// <param name="min">Die kleinste zu erzeugende Zahl</param>
        /// <param name="max">Die größte zu erzeugende Zahl</param>
        /// <returns>Gibt ein Array mit den erzeugten Zufallszahlen zurück</returns>
        public byte[] GetRandomNumbers(int count, byte min, byte max)
        {
            // Zufallszahlen erzeugen
            var csp = new RNGCryptoServiceProvider();
            var numbers = new Byte[count];
            csp.GetBytes(numbers);

            // umrechnen
            var divisor = 256F / (max - min + 1);

            if (min > 0 || max < 255)
            {
                for (int i = 0; i < count; i++)
                {
                    numbers[i] = (byte)((numbers[i] / divisor) + min);
                }
            }

            return numbers;
        }
    }
}