using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using PRecUpdate.Core;
using AcadApplication = Autodesk.AutoCAD.ApplicationServices.Application;

namespace PRecUpdate.Plant3D2026;

public sealed class EntryPoint : IExtensionApplication
{
    public void Initialize()
    {
        RuntimeMarker.Write("AssemblyInitializeStarted");
        RuntimeMarker.Write("AssemblyInitializeCompleted");
    }

    public void Terminate() => RuntimeMarker.Write("AssemblyTerminateCompleted");

    // Preserves the legacy command name. Apply remains denied unless a future
    // controlled fixture adapter proves the legacy Plant/DataLinks semantics.
    [CommandMethod("P-R-UPD", CommandFlags.Session)]
    public void UpdateCommand() => ReportPlan("P-R-UPD");

    [CommandMethod("P-R-UPD-STATUS", CommandFlags.Session)]
    public void StatusCommand() => ReportPlan("P-R-UPD-STATUS");

    private static void ReportPlan(string command)
    {
        var document = AcadApplication.DocumentManager.MdiActiveDocument;
        var plan = new UpdatePlanBuilder().Build(new UpdateRequest(
            document is not null,
            HasPlantProject(),
            HasPlantProject(),
            new HashSet<UpdateOperation>
            {
                UpdateOperation.ProjectNkr, UpdateOperation.Flanges,
                UpdateOperation.Fasteners, UpdateOperation.ProjectSpec
            },
            UpdateExecutionMode.DryRun,
            ControlledFixturePermit: false));
        document?.Editor.WriteMessage($"\nP_Rec_Update {command}: {(plan.Accepted ? "DryRun planned; no project data changed." : string.Join(", ", plan.Diagnostics))}");
        RuntimeMarker.Write(plan.Accepted ? "CommandRegistrationVerified" : "CommandPreflightRejected");
    }

    private static bool HasPlantProject()
    {
        try { return Autodesk.ProcessPower.PlantInstance.PlantApplication.CurrentProject is not null; }
        catch { return false; }
    }
}