using Bright.Serialization;
using Luban.Job.Cfg.Datas;
using Luban.Job.Cfg.Defs;
using System.Collections.Generic;

namespace Luban.Job.Cfg.DataVisitors
{
    class BinaryExportor : IDataActionVisitor<ByteBuf>
    {
        public static BinaryExportor Ins { get; } = new BinaryExportor();

        public void Accept(DBool type, ByteBuf x)
        {
            x.WriteBool(type.Value);
        }

        public void Accept(DByte type, ByteBuf x)
        {
            x.WriteByte(type.Value);
        }

        public void Accept(DShort type, ByteBuf x)
        {
            x.WriteShort(type.Value);
        }

        public void Accept(DFshort type, ByteBuf x)
        {
            x.WriteFshort(type.Value);
        }

        public void Accept(DInt type, ByteBuf x)
        {
            x.WriteInt(type.Value);
        }

        public void Accept(DFint type, ByteBuf x)
        {
            x.WriteFint(type.Value);
        }

        public void Accept(DLong type, ByteBuf x)
        {
            x.WriteLong(type.Value);
        }

        public void Accept(DFlong type, ByteBuf x)
        {
            x.WriteFlong(type.Value);
        }

        public void Accept(DFloat type, ByteBuf x)
        {
            x.WriteFloat(type.Value);
        }

        public void Accept(DDouble type, ByteBuf x)
        {
            x.WriteDouble(type.Value);
        }

        public void Accept(DEnum type, ByteBuf x)
        {
            x.WriteInt(type.Value);
        }

        public void Accept(DString type, ByteBuf x)
        {
            x.WriteString(type.Value);
        }

        public void Accept(DBytes type, ByteBuf x)
        {
            x.WriteBytes(type.Value);
        }

        public void Accept(DText type, ByteBuf x)
        {
            x.WriteString(type.Value);
        }

        public void Accept(DBean type, ByteBuf x)
        {
            var bean = type.Type;
            if (bean.IsAbstractType)
            {
                // null 时特殊处理
                if (type.ImplType == null)
                {
                    x.WriteInt(0);
                    return;
                }
                x.WriteInt(type.ImplType.Id);
            }
            int index = -1;
            foreach (var field in type.Fields)
            {
                ++index;
                var defField = (DefField)type.ImplType.HierarchyFields[index];
                if (!defField.NeedExport)
                {
                    continue;
                }

                if (defField.NeedMarshalBoolPrefix)
                {
                    if (field != null)
                    {
                        x.WriteBool(true);
                        field.Apply(this, x);
                    }
                    else
                    {
                        x.WriteBool(false);
                    }
                }
                else
                {
                    field.Apply(this, x);
                }
            }
        }

        public void WriteList(List<DType> datas, ByteBuf x)
        {
            x.WriteSize(datas.Count);
            foreach (var d in datas)
            {
                d.Apply(this, x);
            }
        }

        public void Accept(DArray type, ByteBuf x)
        {
            WriteList(type.Datas, x);
        }

        public void Accept(DList type, ByteBuf x)
        {
            WriteList(type.Datas, x);
        }

        public void Accept(DSet type, ByteBuf x)
        {
            WriteList(type.Datas, x);
        }

        public void Accept(DMap type, ByteBuf x)
        {
            Dictionary<DType, DType> datas = type.Datas;
            x.WriteSize(datas.Count);
            foreach (var e in datas)
            {
                e.Key.Apply(this, x);
                e.Value.Apply(this, x);
            }
        }

        public void Accept(DVector2 type, ByteBuf x)
        {
            x.WriteVector2(type.Value);
        }

        public void Accept(DVector3 type, ByteBuf x)
        {
            x.WriteVector3(type.Value);
        }

        public void Accept(DVector4 type, ByteBuf x)
        {
            x.WriteVector4(type.Value);
        }

        public void Accept(DDateTime type, ByteBuf x)
        {
            x.WriteInt(type.UnixTime);
        }
    }
}