using System;
using System.Threading.Tasks;
using TeamAAS.Feeder.Attributes;
using TeamAAS.Feeder.Interfaces;
using TeamAAS.Feeder.UI;
using TeamAAS.Feeder.Enums;
using TeamAAS.Feeder.Models;

namespace TeamAAS.Feeder.Devices
{
    /// <summary>
    /// Afag 品牌供料器骨架：已按插槽规格注册（品牌 + 专属调试页），
    /// 协议收发待开发——命令类方法目前统一抛出"待开发"提示，连接层仅保留 TCP 骨架。
    /// </summary>
    [Feeder("Afag 供料器", FeederBrand.Afag, Description = "待开发", DebugPageType = typeof(AfagFeederDebugPage))]
    public class AfagFeeder : IFeeder
    {
        private readonly object _ioLock = new object();
        private System.Net.Sockets.TcpClient _tcp;
        private volatile bool _manualDisconnect;

        public Guid Id { get; }
        public int FeederNo { get; }
        public string Name { get; }
        public FeederBrand Brand => FeederBrand.Afag;
        public bool IsConnected => _tcp?.Connected ?? false;
        public bool IsBacklightOn { get; private set; }

        public event Action<IFeeder, bool> ConnectionChanged;
        public event Action<IFeeder, string, bool> MessageExchanged;

        private string IP { get; }
        private int Port { get; }

        public AfagFeeder(Guid id, int feederNo, string name, string ip, int port)
        {
            Id = id;
            FeederNo = feederNo;
            Name = name;
            IP = ip;
            Port = port;
        }

        public async Task ConnectAsync()
        {
            _manualDisconnect = false;
            await Task.Run(() =>
            {
                _tcp = new System.Net.Sockets.TcpClient();
                _tcp.Connect(System.Net.IPAddress.Parse(IP), Port);
                ConnectionChanged?.Invoke(this, true);
            });
        }

        public async Task DisconnectAsync()
        {
            _manualDisconnect = true;
            await Task.Run(() =>
            {
                try { _tcp?.Close(); } catch { }
                ConnectionChanged?.Invoke(this, false);
            });
        }

        public void Dispose()
        {
            _manualDisconnect = true;
            try { _tcp?.Close(); } catch { }
        }

        private void EnsureDeveloping()
        {
            if (!IsConnected)
                throw new InvalidOperationException("Afag 供料器未连接");
            throw new NotSupportedException("Afag 供料器协议待开发");
        }

        public Task OpenBacklightAsync() { EnsureDeveloping(); return Task.CompletedTask; }
        public Task CloseBacklightAsync() { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<bool> QueryBacklightAsync() { EnsureDeveloping(); return Task.FromResult(false); }
        public Task<int> RunDirectionAsync(FeederAction action, int? durationMs = null) { EnsureDeveloping(); return Task.FromResult(0); }
        public Task StopAsync() { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<SingleActionParam> GetActionParamAsync(int index) { EnsureDeveloping(); return Task.FromResult(new SingleActionParam()); }
        public Task SetActionParamAsync(int index, SingleActionParam param) { EnsureDeveloping(); return Task.CompletedTask; }
        public Task DownloadAllParamsAsync(FeederInfo info) { EnsureDeveloping(); return Task.CompletedTask; }
        public Task SaveToDeviceAsync() { EnsureDeveloping(); return Task.CompletedTask; }

        public Task<FeederSystemParam> GetSystemParamAsync() { EnsureDeveloping(); return Task.FromResult(new FeederSystemParam()); }
        public Task SetSystemParamAsync(FeederSystemParam param) { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<HopperOutputParam> GetHopperParamAsync(int group) { EnsureDeveloping(); return Task.FromResult(new HopperOutputParam()); }
        public Task SetHopperParamAsync(int group, HopperOutputParam param) { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<int> RunHopperOutputAsync(int id, int? timespan = null) { EnsureDeveloping(); return Task.FromResult(0); }
        public Task StopHopperOutputAsync() { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<int> GetInputTriggerAsync(int index) { EnsureDeveloping(); return Task.FromResult(0); }
        public Task SetInputTriggerAsync(int index, int sequenceId) { EnsureDeveloping(); return Task.CompletedTask; }
        public Task<int> ReadParamAsync(int id) { EnsureDeveloping(); return Task.FromResult(0); }
        public Task WriteParamAsync(int id, int value) { EnsureDeveloping(); return Task.CompletedTask; }
    }
}