using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System;
using System.Text;

namespace UriEscapeUnescapeTest
{
    public class Program
    {
        static void Main(string[] args) => BenchmarkSwitcher.FromTypes(new[] { typeof(Test) }).Run(args);

        [MemoryDiagnoser]
        public class Test
        {
            private string[] escapedStrings = new string[10000];

            [GlobalSetup]
            public void Setup()
            {
                for(var i = 0; i < escapedStrings.Length; i++)
                {
                    escapedStrings[i] = GenenerateRandomEscapedString();
                }
            }

            public static string GenenerateRandomEscapedString()
            {
                StringBuilder sb = new StringBuilder();
                Random r = new Random();
                for (int i = 0; i < 1000; i++)
                {
                    sb.Append("aa");
                    int val = r.Next(0, 3);
                    switch (val)
                    {
                        case 0:
                            sb.Append("%2F%2F");
                            break;
                        case 1:
                            sb.Append("%3A");
                            break;
                        case 2:
                            sb.Append("%21");
                            break;
                        default:
                            break;
                    }
                }
                return sb.ToString();
            }

            [Benchmark]
            public void UnescapeRandomStrings()
            {
                for(var i = 0; i < escapedStrings.Length; i++)
                {
                    Uri.UnescapeDataString(escapedStrings[i]);
                }
            }
        }
    }
}