using System;
using IvfTl.ControlHost.Debug;
using IvfTl.ControlHost.Tests.Fakes;
using Xunit;
namespace IvfTl.ControlHost.Tests
{
    public class DebugSessionManagerTests
    {
        private DateTime _now = new DateTime(2026, 6, 23, 0, 0, 0);
        private (DebugSessionManager mgr, FakeGate gate) New(bool canAcquire = true)
        {
            var serial = new FakeSerial();
            var gate = new FakeGate(5, serial) { CanAcquire = canAcquire };
            var mgr = new DebugSessionManager(sn => gate, () => _now, ttlMs: 10000, log: _ => { });
            return (mgr, gate);
        }
        [Fact]
        public void Acquire_Returns_SessionId_And_Pauses()
        {
            var (mgr, gate) = New();
            var r = mgr.Acquire(5);
            Assert.True(r.Ok);
            Assert.False(string.IsNullOrEmpty((string)r.Result));
            Assert.True(gate.IsCapturePaused);
        }
        [Fact]
        public void Acquire_Busy_Returns_BUSY()
        {
            var (mgr, _) = New(canAcquire: false);
            var r = mgr.Acquire(5);
            Assert.False(r.Ok);
            Assert.Equal("BUSY", r.Code);
        }
        [Fact]
        public void Release_Disposes_Lease_And_Resumes()
        {
            var (mgr, gate) = New();
            string sid = (string)mgr.Acquire(5).Result;
            var r = mgr.Release(sid);
            Assert.True(r.Ok);
            Assert.True(gate.LastLease.Disposed);
        }
        [Fact]
        public void Release_Unknown_Session_Is_Idempotent_Ok()
        {
            var (mgr, _) = New();
            Assert.True(mgr.Release("not-a-session").Ok);
        }
    }
}