using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Security.Cryptography;

//for Iced_Lemon only, do not modify
//TODO: seperate the functionalities in the future
namespace Lemon.GenericLib.Code.Utilities {

    public static class LemonCodeUtilities {

        //strings
        #region StringUtilities
        public static bool CompareTextNonCase(string textA, string textB)
        {
            return textA.ToUpper() == textB.ToUpper();
        }

        public static string TrimLastChar(string text)
        {
            return text.Substring(0, text.Length - 1);
        }
        #endregion


        #region RandomUtilities
        //randoms
        public static float RandomVectorValue(Vector2 vector) { return UnityEngine.Random.Range(vector.x, vector.y); }
        public static int RandomVectorValueInt(Vector2Int vector) { return UnityEngine.Random.Range(vector.x, vector.y + 1); }

        public static int RandomArrayIndex(object[] array) { return UnityEngine.Random.Range(0, array.Length); }
        public static object RandomArrayItem(object[] array) { return array[UnityEngine.Random.Range(0, array.Length)]; }
        public static int RandomListIndex(List<object> list) { return UnityEngine.Random.Range(0, list.Count); }
        public static object RandomListItem(List<object> list) { return list[UnityEngine.Random.Range(0, list.Count)]; }
        public static bool RandomBool() { return UnityEngine.Random.Range(0, 2) > 0; }

        public static void Shuffle<T>(this IList<T> list)
        {
            //RNGCryptoServiceProvider provider = new RNGCryptoServiceProvider();
            //int n = list.Count;
            //while (n > 1)
            //{
            //    byte[] box = new byte[1];
            //    do provider.GetBytes(box);
            //    while (!(box[0] < n * (Byte.MaxValue / n)));
            //    int k = (box[0] % n);
            //    n--;
            //    T value = list[k];
            //    list[k] = list[n];
            //    list[n] = value;
            //}
            System.Random rng = new System.Random();

            int n = list.Count;
            while (n > 1)
            {
                n--;
                int k = rng.Next(n + 1);
                T value = list[k];
                list[k] = list[n];
                list[n] = value;
            }
        }
        #endregion

        public static string PrintList<T>(List<T> list) {
            string str = "[ ";
            foreach (var item in list)
            {
                str += item.ToString() + ", ";
            }
            return str + " ]";
        }
    }


}