using System;
using System.Collections.Generic;
using System.IO.Ports;
using IvfTl.Hardware.Impl;

namespace IvfTl.Hardware.HilTests.Infrastructure
{
    /// <summary>一个有响应的真舱:串口 + 握手返回的舱号。</summary>
    public sealed class ChamberInfo
    {
        public string Port { get; }
        public int HouseSn { get; }
        public ChamberInfo(string port, int houseSn) { Port = port; HouseSn = houseSn; }
    }

    /// <summary>
    /// 全套件构造一次:扫描 COM 口、逐口 Open+握手,收集有响应的真舱。
    /// 探测完即 Close 释放;各测试用时各自重开端口。
    /// 无硬件 / control 正占用串口 → Chambers 为空 → 测试 Skip。
    /// </summary>
    public sealed class HardwareRigFixture : IDisposable
    {
        public IReadOnlyList<ChamberInfo> Chambers { get; }

        public HardwareRigFixture()
        {
            var found = new List<ChamberInfo>();
            string[] ports;
            try { ports = SerialPort.GetPortNames(); } catch { ports = Array.Empty<string>(); }

            foreach (var port in ports)
            {
                if (port == "COM1" || port == "COM2") continue; // 非舱口
                SerialChannelImpl ch = null;
                try
                {
                    ch = new SerialChannelImpl(0, port);
                    if (!ch.Open()) continue;
                    int house = ch.ShakeHandsWait();
                    if (house < 0) continue;
                    found.Add(new ChamberInfo(port, house));
                }
                catch { /* 占口/无响应 → 不计入 */ }
                finally { try { ch?.Close(); } catch { } }
            }
            Chambers = found;
        }

        /// <summary>取第一个有舱室 E方(排气阀/灯光/焦点)的真舱,排除舱11(缓冲瓶/总控)。无则返回 null。</summary>
        public ChamberInfo FirstChamberWithWells()
        {
            foreach (var c in Chambers) if (c.HouseSn != 11) return c;
            return null;
        }

        public void Dispose() { }
    }
}