using System;
using IvfTl.ControlHost.Debug;
using IvfTl.ControlHost.Tests.Fakes;
using Xunit;

namespace IvfTl.ControlHost.Tests
{
    /// <summary>
    /// Task7-t3:借用(Acquire)成功时回带培养态(cultivating + embryoCount)。
    /// 纯逻辑、注入式——cultivationOf 委托提供假培养态,不接真实数据源(下个任务才装配)。
    /// </summary>
    public class DebugAcquireCultivationTests
    {
        private static readonly DateTime Now = new DateTime(2026, 6, 24, 0, 0, 0, DateTimeKind.Utc);

        private DebugSessionManager NewMgr(FakeGate gate, Func<int, (bool, int)> cultivationOf)
            => new DebugSessionManager(_ => gate, () => Now, ttlMs: 10000, log: null, cultivationOf: cultivationOf);

        [Fact]
        public void Acquire_CultivatingHouse_ReturnsCultivationState()
        {
            var gate = new FakeGate(6, new FakeSerial());
            var mgr = NewMgr(gate, sn => (true, 3));

            var r = mgr.Acquire(6);

            Assert.True(r.Ok);
            Assert.True(r.Cultivating);
            Assert.Equal(3, r.EmbryoCount);
            // Result 仍是 sid 字符串(operate 端靠 r.Result 取 sessionId,不能破坏)
            Assert.IsType<string>(r.Result);
            Assert.False(string.IsNullOrEmpty((string)r.Result));
        }

        [Fact]
        public void Acquire_EmptyHouse_ReturnsNotCultivating()
        {
            var gate = new FakeGate(6, new FakeSerial());
            var mgr = NewMgr(gate, sn => (false, 0));

            var r = mgr.Acquire(6);

            Assert.True(r.Ok);
            Assert.False(r.Cultivating);
            Assert.Equal(0, r.EmbryoCount);
            Assert.IsType<string>(r.Result);
            Assert.False(string.IsNullOrEmpty((string)r.Result));
        }

        [Fact]
        public void Acquire_NoCultivationProvider_DefaultsFalse()
        {
            var gate = new FakeGate(6, new FakeSerial());
            // cultivationOf 传 null(不提供)——Acquire 不应崩,默认 false/0
            var mgr = NewMgr(gate, null);

            var r = mgr.Acquire(6);

            Assert.True(r.Ok);
            Assert.False(r.Cultivating);
            Assert.Equal(0, r.EmbryoCount);
            Assert.IsType<string>(r.Result);
            Assert.False(string.IsNullOrEmpty((string)r.Result));
        }

        [Fact]
        public void Acquire_CultivationProviderThrows_DoesNotBlockAcquire()
        {
            var gate = new FakeGate(6, new FakeSerial());
            // 业务红线:取培养态炸了也绝不能阻断借用本身(锁死 Acquire 里的 try-catch 兜底语义)
            var mgr = NewMgr(gate, sn => throw new Exception("模拟取培养态失败"));

            var r = mgr.Acquire(6);

            Assert.True(r.Ok);              // 借用仍成功
            Assert.False(r.Cultivating);    // 兜底为默认 false
            Assert.Equal(0, r.EmbryoCount); // 兜底为默认 0
            Assert.IsType<string>(r.Result);
            Assert.False(string.IsNullOrEmpty((string)r.Result));
        }
    }
}