using System;
using System.Collections.Generic;
using System.Linq;
using Autodesk.Revit.DB;
using KGdev.BI3D.Revit.Common;

namespace KGdev.BI3D.Revit.Implementations
{
    internal class DefaultBI3DViewsProvider : IBI3DViewsProvider
    {
        public View3D GetContextView3D(Document document)
        {
            Element element2 = (
                from element in new FilteredElementCollector(document)
                    .WhereElementIsNotElementType()
                    .OfCategory(BuiltInCategory.OST_Views)
                    .OfClass(typeof(View3D))
                where element.Name == "3DBI-Context"
                select element
            ).FirstOrDefault<Element>();
            return element2 as View3D;
        }

        public List<View3D> GetScenes(Document document)
        {
            return new FilteredElementCollector(document)
                .OfCategory(BuiltInCategory.OST_Views)
                .WhereElementIsNotElementType()
                .OfClass(typeof(View3D))
                .Cast<View3D>()
                .Where(
                    delegate(View3D v)
                    {
                        bool flag;
                        try
                        {
                            flag = v.IsPerspective && v.Name.StartsWith("3DBI_");
                        }
                        catch
                        {
                            flag = false;
                        }
                        return flag;
                    }
                )
                .ToList<View3D>();
        }

        public string GetSceneName(View3D view)
        {
            return view.Name.StartsWith("3DBI_") ? view.Name.Substring("3DBI_".Length) : view.Name;
        }

        private const string CONTEXT_VIEW_NAME = "3DBI-Context";

        private const string VIEW_IS_SCENE_PREFIX = "3DBI_";
    }
}