using System.IO;
using System.Linq;
using System.Threading.Tasks;
using WingRtmpService.ChannelManagers.Messages;
using WingRtmpService.ChannelManagers.Netease.Helper;
using WingServerCommon.Config;
using WingServerCommon.Config.Parameters;
using WingServerCommon.Log;

namespace WingRtmpService.ChannelManagers.Embedded
{
    class EmbeddedChannelManager : IChannelManager
    {
        private string _url = "";

        public EmbeddedChannelManager()
        {
            _url = EnvironmentConfigs.Rtmp.RTMPPushUrl;
        }

        private string GetPushUrl(string streamName)
        {
            var rtmpPrefix = _url.Replace("http://", "").Replace("https://", "");
            return $"rtmp://{rtmpPrefix.TrimEnd('/')}/{streamName}";
        }

        private string GetPullUrl(string streamName)
        {
            var rtmpPrefix = _url.Replace("http://", "").Replace("https://", "");
            return $"rtmp://{rtmpPrefix.TrimEnd('/')}/{streamName}";
        }

        private string GetHlsPullUrl(string streamName)
        {
            return $"{_url.TrimEnd('/')}/{streamName}/play.m3u8";
        }

        private string GetHttpPullUrl(string streamName)
        {
            return $"{_url.TrimEnd('/')}/{streamName}.flv";
        }

        public ICreateChannelResult CreateChannel(ChannelParameter channel)
        {
            if (channel.Parameter.ContainsKey(ChannelConstant.CreateChannelKey))
            {
                var streamName = channel.Parameter[ChannelConstant.CreateChannelKey];

                var channelInfo = new ChannelInfo
                {
                    Cid = channel.Parameter[ChannelConstant.CreateChannelKey],
                    PushUrl = GetPushUrl(streamName),
                    RtmpPullUrl = GetPullUrl(streamName),
                    HlsPullUrl = GetHlsPullUrl(streamName),
                    HttpPullUrl = GetHttpPullUrl(streamName),
                };
                Logger.WriteLineInfo($"RtmpService EmbeddedChannelManager CreateChannel, streamName:{streamName}");
                return new CreateChannelResult
                {
                    Code = (int)SendResultStatus.Success,
                    ChannelInfo = channelInfo
                };
            }

            Logger.WriteLineError("RtmpService EmbeddedChannelManager CreateChannel failed, Create channel parameter is empty.");
            throw new InvalidDataException();
        }

        public Task<IDeleteChannelResult> DeleteChannelAsync(ChannelParameter channel)
        {
            return Task.FromResult<IDeleteChannelResult>(new DeleteChannelResult { Code = (int)SendResultStatus.Success });
        }
    }
}