using ClaudeDo.Ui.Services;
using ClaudeDo.Ui.ViewModels.Modals;

namespace ClaudeDo.Ui.Tests.ViewModels;

public sealed class WorkerConnectionModalViewModelTests
{
    private sealed class FakeWorkerLocator(string? path) : WorkerLocator
    {
        public override string? Find() => path;
    }

    private sealed class FakeInstallerLocator(string? path) : InstallerLocator
    {
        public override string? Find() => path;
    }

    [Fact]
    public void StartWorker_ExeNotFound_ShowsErrorAndKeepsDialogOpen()
    {
        var vm = new WorkerConnectionModalViewModel(new FakeWorkerLocator(null), new FakeInstallerLocator(null));
        var closed = false;
        vm.CloseAction = () => closed = true;

        vm.StartWorkerCommand.Execute(null);

        Assert.False(closed);
        Assert.False(string.IsNullOrEmpty(vm.ErrorText));
    }

    [Fact]
    public void StartWorker_ProcessStartThrows_ShowsErrorAndKeepsDialogOpen()
    {
        var vm = new WorkerConnectionModalViewModel(new FakeWorkerLocator(@"C:\fake\ClaudeDo.Worker.exe"), new FakeInstallerLocator(null))
        {
            ProcessStarter = _ => throw new InvalidOperationException("blocked by AV")
        };
        var closed = false;
        vm.CloseAction = () => closed = true;

        vm.StartWorkerCommand.Execute(null);

        Assert.False(closed);
        Assert.Contains("blocked by AV", vm.ErrorText);
    }

    [Fact]
    public void StartWorker_Success_ClearsErrorAndClosesDialog()
    {
        var vm = new WorkerConnectionModalViewModel(new FakeWorkerLocator(@"C:\fake\ClaudeDo.Worker.exe"), new FakeInstallerLocator(null))
        {
            ProcessStarter = _ => { }
        };
        var closed = false;
        vm.CloseAction = () => closed = true;

        vm.StartWorkerCommand.Execute(null);

        Assert.True(closed);
        Assert.Null(vm.ErrorText);
    }

    [Fact]
    public void RerunInstaller_NotFound_ShowsErrorAndDoesNotThrow()
    {
        var vm = new WorkerConnectionModalViewModel(new FakeWorkerLocator(null), new FakeInstallerLocator(null));

        vm.RerunInstallerCommand.Execute(null);

        Assert.False(string.IsNullOrEmpty(vm.ErrorText));
    }

    [Fact]
    public void RerunInstaller_ProcessStartThrows_ShowsError()
    {
        var vm = new WorkerConnectionModalViewModel(new FakeWorkerLocator(null), new FakeInstallerLocator(@"C:\fake\ClaudeDo.Installer.exe"))
        {
            ProcessStarter = _ => throw new InvalidOperationException("blocked by AV")
        };

        vm.RerunInstallerCommand.Execute(null);

        Assert.Contains("blocked by AV", vm.ErrorText);
    }
}