ElevenLabs

using System;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using UnityEngine;

namespace JasonStorey
{
    public class ElevenLabs
    {
        readonly string _apiKey;

        HttpClient _client;

        const string DEFAULT_KEY = "YOUR_KEY";
        public ElevenLabs() : this(DEFAULT_KEY) { }
        public ElevenLabs(string apiKey)
        {
            _apiKey = apiKey;
            _client = new HttpClient();
            _client.DefaultRequestHeaders.Add("xi-api-key",_apiKey);
            _client.DefaultRequestHeaders.Add("x-api-key",_apiKey);

        }

        string ToMp3FileSave(HttpWebRequest req,string path)
        {
            HttpWebResponse response = (HttpWebResponse)req.GetResponse();
            // Get the stream associated with the response.
            Stream receiveStream = response.GetResponseStream();
            byte[] buffer = new byte[32768];
            using (FileStream fileStream = File.Create(path))
            {
                while (true)
                {
                    int read = receiveStream.Read(buffer, 0, buffer.Length);
                    if (read <= 0)
                        break;
                    fileStream.Write(buffer, 0, read);
                }
            }
            return path;
        }



        public async Task SaveToFile(string message,string path,Action<string> completed)
        {
            HttpResponseMessage result = (HttpResponseMessage)await Say(message,VOICE_AMY);

            var stream = await result.Content.ReadAsStreamAsync();
            byte[] buffer = new byte[32768];
            await using var fileStream = File.Create(path);
            while (true)
            {
                int read = await stream.ReadAsync(buffer, 0, buffer.Length);
                if (read <= 0)
                    break;
                fileStream.Write(buffer, 0, read);
            }
            completed?.Invoke(path);
        }

        public async Task<object> Say(string message, string voice)
        {
            var json = JsonConvert.SerializeObject(TextRequest.Create(message));
            Debug.Log(json);
            var httpContent = new StringContent(json, Encoding.UTF8, "application/json");
            return
                await _client.PostAsync("https://api.elevenlabs.io/v1/text-to-speech/" +
                                        voice, httpContent);

        }

        const string VOICE_AMY = "NUAlGdat74Sbul1N99HF";
    }

    [Serializable]
    public class TextRequest
    {
        public static TextRequest Create(string text) => new() { text = text, voice_settings = new VoiceSettings()};

        public string text;
        public VoiceSettings voice_settings;

    }

    [Serializable]
    public class VoiceSettings
    {
        public float similarity_boost = 0.7f;
        public float stability = 0.7f;
    }
}