//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="StepEntityBase.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 Microsoft.CodeAnalysis.CSharp.Syntax;

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

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace StgSharp.Model.Step
{
    public abstract class StepEntityBase : IExpConvertableFrom<StepEntityBase>
    {

        public IEnumerable<int> Dependencies { get; private protected set; }

        public int Id
        {
            get => Label.Id;
            protected set { Label = new StepEntityLabel( value ); }
        }

        public StepEntityLabel Label { get; protected set; }

        public abstract StepItemType ItemType { get; }

        public StepModel Context { get; init; }

        public string Name { get; protected set; }

        protected string ExpEntityTypeName { get; set; }

        public void FromInstance( StepEntityBase entity )
        {
            this.Id = entity.Id;
            this.Label = entity.Label;
            this.ExpEntityTypeName = entity.ExpEntityTypeName;
            this.Name = entity.Name;
        }

        public unsafe string[] GetEntityDescription( int depth )
        {
            List<string> ret = new();
            string thisDescription = $"Entity Id: {Id}, type: {ExpEntityTypeName}";
            if( depth <= 0 ) {
                return [thisDescription];
            }
            switch( Dependencies.Count() )
            {
                case 0:
                    return [thisDescription];
                case 1:
                    ret.Add( thisDescription );
                    int only = Dependencies.First();
                    string[] dep = Context[ only ]!.GetEntityDescription( depth - 1 );
                    ret.Add( $"  ©¸-{dep[0]}" );
                    for( int i = 1; i < dep.Length; i++ ) {
                        ret.Add( $"    {dep[i]}" );
                    }
                    return ret.ToArray();
                default:
                    ret.Add( thisDescription );
                    int first = Dependencies.First();
                    dep = Context[ first ]!.GetEntityDescription( depth - 1 );
                    ret.Add( $"  ©À-{dep[0]}" );
                    int index = 0;
                    for( int i = 1; i < dep.Length; i++ ) {
                        ret.Add( $"  | {dep[i]}" );
                    }
                    foreach( int item in Dependencies )
                    {
                        index++;
                        if( index == 1 || index >= Dependencies.Count() )
                        {
                            continue;
                        }
                        dep = Context[ item ]!.GetEntityDescription( depth - 1 );
                        ret.Add( $"  ©À-{dep[0]}" );
                        for( int i = 1; i < dep.Length; i++ ) {
                            ret.Add( $"  | {dep[i]}" );
                        }
                    }
                    dep = Context[ Dependencies.Last() ].GetEntityDescription( depth - 1 );
                    ret.Add( $"  ©¸-{dep[0]}" );
                    for( int i = 1; i < dep.Length; i++ ) {
                        ret.Add( $"    {dep[i]}" );
                    }
                    return ret.ToArray();
            }
        }

        public bool IsConvertableTo( string entityName )
        {
            return false;
        }

    }
}