using System;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Chtn.CSharp.SDK.Core;
using Chtn.CSharp.SDK.Models.Media;

namespace Chtn.CSharp.SDK.Services
{
    public interface IFileTransferService
    {
        Task<StartNewFileTransferResp> StartNew(string targetUserId, string fileName, long fileSize);
        Task Accept(string transferId);
        Task Decline(string transferId);
        Task SendRtcOffer(string transferId, object offer);
        Task SendRtcAnswer(string transferId, object answer);
        Task SendRtcIce(string transferId, object ice);
    }

    public class FileTransferService : IFileTransferService
    {
        private readonly ApiClient _apiClient;
        private readonly string _userId;
        private readonly object _webSocket;

        public FileTransferService(ApiClient apiClient, string userId, object webSocket)
        {
            _apiClient = apiClient ?? throw new ArgumentNullException(nameof(ApiClient));
            _userId = userId;
            _webSocket = webSocket ?? throw new ArgumentNullException(nameof(webSocket));
        }

        public async Task<StartNewFileTransferResp> StartNew(string targetUserId, string fileName, long fileSize)
        {
            var body = new { userid = _userId, targetId = targetUserId, name = fileName, size = fileSize };
            return await _apiClient.PostAsync<object, StartNewFileTransferResp>("v2/chat/dm/startNewFileTransfer", body);
        }

        public async Task Accept(string transferId)
        {
            var body = new { userid = _userId, transferId = transferId };
            await _apiClient.PostAsync<object, object>("v2/chat/dm/acceptFileTransfer", body);
        }

        public async Task Decline(string transferId)
        {
            var body = new { userid = _userId, transferId = transferId };
            await _apiClient.PostAsync<object, object>("v2/chat/dm/declineFileTransfer", body);
        }

        public async Task SendRtcOffer(string transferId, object offer)
        {
            var body = new { userid = _userId, transferId = transferId, offer = offer };
            await _apiClient.PostAsync<object, object>("v2/chat/dm/sendRtcOfferFileTransfer", body);
        }

        public async Task SendRtcAnswer(string transferId, object answer)
        {
            var body = new { userid = _userId, transferId = transferId, answer = answer };
            await _apiClient.PostAsync<object, object>("v2/chat/dm/sendRtcAnswerFileTransfer", body);
        }

        public async Task SendRtcIce(string transferId, object ice)
        {
            var body = new { userid = _userId, transferId = transferId, ice = ice };
            await _apiClient.PostAsync<object, object>("v2/chat/dm/sendRtcICEFileTransfer", body);
        }
    }
}