//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="ExpressStepUtil.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. All rights reserved.
//     
//     Permission is hereby granted, free of charge, to any person 
//     obtaining a copy of this software and associated documentation 
//     files (the ¡°Software¡±), to deal in the Software without restriction, 
//     including without limitation the rights to use, copy, modify, merge,
//     publish, distribute, sublicense, and/or sell copies of the Software, 
//     and to permit persons to whom the Software is furnished to do so, 
//     subject to the following conditions:
//     
//     The above copyright notice and 
//     this permission notice shall be included in all copies 
//     or substantial portions of the Software.
//     
//     THE SOFTWARE IS PROVIDED ¡°AS IS¡±, 
//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using CommunityToolkit.HighPerformance.Buffers;

using StgSharp.Model.Step;
using StgSharp.Script;
using StgSharp.Script.Express;

using System;
using System.Collections.Frozen;
using System.Collections.Generic;
using System.Runtime.CompilerServices;

namespace StgSharp.Model.Step
{
    public class ExpressStepUtil : ExpSchema
    {

        public const string AdvancedFaceText = "ADVANCED_FACE";
        public const string Axis2Placement2DText = "AXIS2_PLACEMENT_2D";
        public const string Axis2Placement3DText = "AXIS2_PLACEMENT_3D";
        public const string BSplineCurveWithKnotsText = "B_SPLINE_CURVE_WITH_KNOTS";
        public const string CartesianPointText = "CARTESIAN_POINT";
        public const string CircleText = "CIRCLE";
        public const string CylindricalSurfaceText = "CYLINDRICAL_SURFACE";
        public const string DirectionText = "DIRECTION";
        public const string EdgeCurveText = "EDGE_CURVE";
        public const string EdgeLoopText = "EDGE_LOOP";
        public const string EllipseText = "ELLIPSE";
        public const string FaceBoundText = "FACE_BOUND";
        public const string FaceOuterBoundText = "FACE_OUTER_BOUND";
        public const string LineText = "LINE";
        public const string OrientedEdgeText = "ORIENTED_EDGE";
        public const string PlaneText = "PLANE";
        public const string RepresentationItemText = "REPRESENTATION_ITEM";
        public const string VectorText = "VECTOR";
        public const string VertexPointText = "VERTEX_POINT";

        private static
            HashSet<string> names = [
                AdvancedFaceText,
                Axis2Placement2DText,
                Axis2Placement3DText,
                BSplineCurveWithKnotsText,
                CartesianPointText,
                CircleText,
                CylindricalSurfaceText,
                DirectionText,
                EdgeCurveText,
                EdgeLoopText,
                EllipseText,
                FaceBoundText,
                FaceOuterBoundText,
                LineText,
                OrientedEdgeText,
                PlaneText,
                RepresentationItemText,
                VectorText,
                VertexPointText,
                ];

        private FrozenDictionary<string, ExpEntitySource> entitiesDefine;
        private StringPool _entityNamePool = new StringPool();

        public ExpressStepUtil()
        {
            IEnumerable<KeyValuePair<string, ExpEntitySource>> defineSource = [];
            entitiesDefine = new Dictionary<string, ExpEntitySource>( defineSource )
                .ToFrozenDictionary();
            foreach( string item in names ) {
                _entityNamePool.Add( item );
            }
        }

        internal StepModel Current { get; set; }

        public override void LoadFromSource( ExpSchemaSource source )
        {
            return;
        }

        public override bool TryGetConst( string name, out ExpElementInstance c )
        {
            c = null!;
            return false;
        }

        public override bool TryGetEntity( string name, out ExpEntitySource e )
        {
            return entitiesDefine.TryGetValue( name, out e! );
        }

        public override bool TryGetFunction( string name, out ExpFunctionSource f )
        {
            f = null!;
            return false;
        }

        public override bool TryGetProcedure( string name, out ExpProcedureSource p )
        {
            p = null!;
            return false;
        }

        public override bool TryGetRule( string name, out ExpRuleSource r )
        {
            r = null!;
            return false;
        }

        public override bool TryGetSchemaInclude( string name, out ExpSchema include )
        {
            include = null!;
            return false;
        }

        public override bool TryGetType( string name, out ExpTypeSource t )
        {
            t = null!;
            return false;
        }

    }
}