using System.IO;
using System.IO.Compression;
using System.Net.Sockets;
using System.Net;
using System.Runtime.Serialization.Formatters.Binary;
using System;
using UnityEngine;

namespace Adrenak.UniVoice {
    public class Utils {
        public class Bytes {
            public static byte[] FloatsToBytes(float[] floats) {
                int byteCount = sizeof(float) * floats.Length;
                byte[] byteArray = new byte[byteCount];

                Buffer.BlockCopy(floats, 0, byteArray, 0, byteCount);

                return byteArray;
            }

            public static float[] BytesToFloats(byte[] bytes) {
                int floatCount = bytes.Length / sizeof(float);
                float[] floatArray = new float[floatCount];

                Buffer.BlockCopy(bytes, 0, floatArray, 0, bytes.Length);

                return floatArray;
            }
        }

        public static class Audio {
            static float[] audioF;
            static float sumOfSquares;
            public static float CalculateRMS(byte[] audio) {
                audioF = Bytes.BytesToFloats(audio);

                foreach(var x in audioF)
                    sumOfSquares += x * x;
                return Mathf.Sqrt(sumOfSquares / audioF.Length);
            }
        }

        public static class Network {
            public static string LocalIPv4Address {
                get {
                    using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0)) {
                        socket.Connect("8.8.8.8", 65530);
                        IPEndPoint endPoint = socket.LocalEndPoint as IPEndPoint;
                        return endPoint.Address.ToString();
                    }
                }
            }
        }
    }
}