using IvfTl.ControlHost.Debug;
using IvfTl.ControlHost.Tests.Fakes;
using Newtonsoft.Json.Linq;
using System;
using Xunit;
namespace IvfTl.ControlHost.Tests
{
    public class DebugExecuteTests
    {
        private DateTime _now = new DateTime(2026, 6, 23);
        private (DebugSessionManager mgr, FakeSerial serial, string sid) New()
        {
            var serial = new FakeSerial();
            var gate = new FakeGate(5, serial);
            var mgr = new DebugSessionManager(sn => gate, () => _now, 10000, _ => { });
            string sid = (string)mgr.Acquire(5).Result;
            return (mgr, serial, sid);
        }
        [Fact] public void Execute_ReadTemp_Dispatches()
        {
            var (mgr, serial, sid) = New();
            var r = mgr.Execute(sid, "ReadTemp", null);
            Assert.True(r.Ok);
            Assert.Contains("Temp", serial.Calls);
        }
        [Fact] public void Execute_OpenLed_Dispatches()
        {
            var (mgr, serial, sid) = New();
            Assert.True(mgr.Execute(sid, "OpenLed", null).Ok);
            Assert.Contains("OpenLed", serial.Calls);
        }
        [Fact] public void Execute_Expired_Session_Rejected()
        {
            var (mgr, _, _) = New();
            Assert.Equal("SESSION_EXPIRED", mgr.Execute("ghost", "ReadTemp", null).Code);
        }
        [Fact] public void Execute_Unknown_Op_Rejected()
        {
            var (mgr, _, sid) = New();
            var r = mgr.Execute(sid, "NoSuchOp", null);
            Assert.False(r.Ok);
            Assert.Equal("BAD_OP", r.Code);
        }
        [Fact] public void Vertical_MoveTo_InRange_Dispatches()
        {
            var (mgr, serial, sid) = New();
            var r = mgr.Execute(sid, "VerticalMoveTo", JObject.FromObject(new { pos = 90000 }));
            Assert.True(r.Ok);
            Assert.Contains("VMoveTo(90000)", serial.Calls);
        }
        [Fact] public void Vertical_MoveTo_OutOfRange_Rejected_NotDispatched()
        {
            var (mgr, serial, sid) = New();
            var r = mgr.Execute(sid, "VerticalMoveTo", JObject.FromObject(new { pos = 130000 }));
            Assert.Equal("OUT_OF_RANGE", r.Code);
            Assert.DoesNotContain("VMoveTo(130000)", serial.Calls);
        }
        [Fact] public void Horizontal_Forward_Relative_Clamped()
        {
            var (mgr, serial, sid) = New();
            mgr.Execute(sid, "HorizontalMoveTo", JObject.FromObject(new { pos = 215000 }));
            var r = mgr.Execute(sid, "HorizontalForward", JObject.FromObject(new { value = 10000 }));
            Assert.Equal("OUT_OF_RANGE", r.Code);
        }
        [Fact] public void WriteScanStep_Dispatches()
        {
            var (mgr, serial, sid) = New();
            Assert.True(mgr.Execute(sid, "WriteScanStep", JObject.FromObject(new { value = 300 })).Ok);
            Assert.Contains("WriteScanStep(300)", serial.Calls);
        }
        [Fact] public void Vertical_Forward_From_RealNonZeroPos_OutOfRange_Rejected()
        {
            var (mgr, serial, sid) = New();
            serial.VerPos = 120000;                 // 真机电机已在 120000(未经 MoveTo,跟踪位仍 -1)
            var r = mgr.Execute(sid, "VerticalForward", JObject.FromObject(new { value = 10000 })); // 目标 130000>125000
            Assert.Equal("OUT_OF_RANGE", r.Code);
            Assert.DoesNotContain("VFwd(10000)", serial.Calls);   // 越界绝不下发
        }
        [Fact] public void Vertical_Forward_From_RealPos_InRange_Dispatches_And_TracksRealPos()
        {
            var (mgr, serial, sid) = New();
            serial.VerPos = 90000;
            var r = mgr.Execute(sid, "VerticalForward", JObject.FromObject(new { value = 10000 })); // 目标 100000 OK
            Assert.True(r.Ok);
            Assert.Contains("VFwd(10000)", serial.Calls);
        }
    }
}