using Admin.NET.Plugin.AiDOP.DataPlatform.Executors;
using Admin.NET.Plugin.AiDOP.Entity.DataPlatform;
using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Options;
using Xunit;

namespace Admin.NET.Plugin.AiDOP.Tests.DataPlatform;

public class MdpOutboundGateTests
{
    [Fact]
    public async Task Disabled_DbExecutor_DoesNotSend()
    {
        var gate = Gate(false);
        var executor = new MdpDbPushExecutor(null!, gate);
        var result = await executor.PushAsync(new MdpSource { SourceType = "DB", SourceCode = "DOPDEMORQ_SQLSERVER" }, new MdpOutbox());

        Assert.True(result.Held);
        Assert.False(result.Success);
        Assert.Equal(1, gate.RefusedCount);
    }

    [Fact]
    public async Task Disabled_ApiExecutor_DoesNotSend()
    {
        var gate = Gate(false);
        var executor = new MdpApiPushExecutor(null!, gate, NullLoggerFactory.Instance);
        var result = await executor.PushAsync(new MdpSource { SourceType = "API", SourceCode = "WMS_API", ApiBaseUrl = "http://127.0.0.1" }, new MdpOutbox());

        Assert.True(result.Held);
        Assert.False(result.Success);
        Assert.Equal(1, gate.RefusedCount);
    }

    [Fact]
    public void Enabled_DoesNotHold()
    {
        var gate = Gate(true);
        Assert.Null(gate.TryHold());
        Assert.Equal(0, gate.RefusedCount);
    }

    [Fact]
    public void Callers_DoNotMutateOutbox_WhenHeld()
    {
        var admin = Read("DataPlatform/MdpOutboxAdminService.cs");
        var pushNow = admin[(admin.IndexOf("push-now", StringComparison.Ordinal))..];
        var heldAt = pushNow.IndexOf("result.Held", StringComparison.Ordinal);
        var updateAt = pushNow.IndexOf("Updateable<MdpOutbox>", StringComparison.Ordinal);
        Assert.True(heldAt >= 0 && updateAt > heldAt, "手工重投必须先判断 Held，再写 outbox");

        var dispatcher = Read("DataPlatform/Executors/MdpTargetPushDispatcher.cs");
        var gateAt = dispatcher.IndexOf("!_gate.IsEnabled", StringComparison.Ordinal);
        var queryAt = dispatcher.IndexOf("Queryable<MdpOutbox>", StringComparison.Ordinal);
        Assert.True(gateAt >= 0 && gateAt < queryAt, "批量推送关闭时不得先取出消息");
        Assert.Contains("result.Held", dispatcher, StringComparison.Ordinal);

        var pick = Read("DataPlatform/Wms/PickBillNbrSyncService.cs");
        var pickGate = pick.IndexOf("_gate.TryHold()", StringComparison.Ordinal);
        var pickSend = pick.IndexOf("GetScopeAsync", StringComparison.Ordinal);
        Assert.True(pickGate >= 0 && pickGate < pickSend, "领料单号同步必须先过闸门再连 165");
    }

    private static MdpOutboundGate Gate(bool enabled) =>
        new(new FixedMonitor(enabled), NullLoggerFactory.Instance);

    private static string Read(string relative)
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir != null)
        {
            var candidate = Path.Combine(dir.FullName, "server", "Plugins", "Admin.NET.Plugin.AiDOP", relative);
            if (File.Exists(candidate)) return File.ReadAllText(candidate);
            dir = dir.Parent;
        }
        throw new FileNotFoundException(relative);
    }

    private sealed class FixedMonitor(bool enabled) : IOptionsMonitor<AidopOutboundOptions>
    {
        public AidopOutboundOptions CurrentValue { get; } = new() { Enabled = enabled };
        public AidopOutboundOptions Get(string? name) => CurrentValue;
        public IDisposable OnChange(Action<AidopOutboundOptions, string?> listener) => new Noop();
        private sealed class Noop : IDisposable { public void Dispose() { } }
    }
}