using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Admin.Components.Pages.Modbus;
using ZB.MOM.WW.OtOpcUa.Driver.Modbus;

namespace ZB.MOM.WW.OtOpcUa.Admin.Tests;

/// <summary>
///     #145 Admin UI: smoke coverage for the ModbusOptionsEditor view model. The Blazor
///     component itself is exercised in browser-runtime tests; this fixture pins the default
///     values the form initialises to so a regression that flips an unedited row to a
///     non-default value gets caught.
/// </summary>
[Trait("Category", "Unit")]
public sealed class ModbusOptionsViewModelTests
{
    [Fact]
    public void Defaults_Match_DriverOption_Defaults()
    {
        var vm = new ModbusOptionsEditor.ModbusOptionsViewModel();
        var driverDefault = new ModbusDriverOptions();

        vm.Host.ShouldBe(driverDefault.Host);
        vm.Port.ShouldBe(driverDefault.Port);
        vm.UnitId.ShouldBe(driverDefault.UnitId);
        vm.Family.ShouldBe(driverDefault.Family);
        vm.MelsecSubFamily.ShouldBe(driverDefault.MelsecSubFamily);

        vm.KeepAliveEnabled.ShouldBe(driverDefault.KeepAlive.Enabled);
        vm.KeepAliveTimeSec.ShouldBe((int)driverDefault.KeepAlive.Time.TotalSeconds);
        vm.KeepAliveIntervalSec.ShouldBe((int)driverDefault.KeepAlive.Interval.TotalSeconds);
        vm.KeepAliveRetryCount.ShouldBe(driverDefault.KeepAlive.RetryCount);

        vm.ReconnectInitialDelayMs.ShouldBe((int)driverDefault.Reconnect.InitialDelay.TotalMilliseconds);
        vm.ReconnectMaxDelayMs.ShouldBe((int)driverDefault.Reconnect.MaxDelay.TotalMilliseconds);
        vm.ReconnectBackoffMultiplier.ShouldBe(driverDefault.Reconnect.BackoffMultiplier);

        vm.MaxRegistersPerRead.ShouldBe(driverDefault.MaxRegistersPerRead);
        vm.MaxRegistersPerWrite.ShouldBe(driverDefault.MaxRegistersPerWrite);
        vm.MaxCoilsPerRead.ShouldBe(driverDefault.MaxCoilsPerRead);
        vm.MaxReadGap.ShouldBe(driverDefault.MaxReadGap);
        vm.UseFC15ForSingleCoilWrites.ShouldBe(driverDefault.UseFC15ForSingleCoilWrites);
        vm.UseFC16ForSingleRegisterWrites.ShouldBe(driverDefault.UseFC16ForSingleRegisterWrites);
        vm.WriteOnChangeOnly.ShouldBe(driverDefault.WriteOnChangeOnly);
    }
}