using System;
using System.IO;

namespace UniGLTF
{
    public abstract class PrimitiveSerializationBase : IValueSerialization
    {
        public bool IsInline
        {
            get { return true; }
        }

        public abstract Type ValueType { get; }

        public void GenerateDeserializer(StreamWriter writer, string callName)
        {
            throw new System.NotImplementedException();
        }

        public abstract string GenerateDeserializerCall(string callName, string argName);
    }

    public class Int8Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(SByte); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetInt8()";
        }
    }

    public class Int16Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Int16); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetInt16()";
        }
    }

    public class Int32Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Int32); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetInt32()";
        }
    }

    public class Int64Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Int64); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetInt64()";
        }
    }

    public class UInt8Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Byte); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetUInt8()";
        }
    }

    public class UInt16Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(UInt16); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetUInt16()";
        }
    }

    public class UInt32Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(UInt32); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetUInt32()";
        }
    }

    public class UInt64Serialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(UInt64); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetUInt64()";
        }
    }

    public class SingleSerialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Single); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetSingle()";
        }
    }

    public class DoubleSerialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Double); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetDouble()";
        }
    }

    public class BooleanSerialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(Boolean); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetBoolean()";
        }
    }

    public class StringSerialization : PrimitiveSerializationBase
    {
        public override Type ValueType
        {
            get { return typeof(String); }
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            return argName + ".GetString()";
        }
    }

    public class EnumIntSerialization : PrimitiveSerializationBase
    {
        Type m_type;
        UniJSON.EnumSerializationType m_serializationType;

        public override Type ValueType
        {
            get { return m_type; }
        }

        public EnumIntSerialization(Type t, UniJSON.EnumSerializationType serializationType)
        {
            m_type = t;
            m_serializationType = serializationType;
        }

        public override string GenerateDeserializerCall(string callName, string argName)
        {
            switch (m_serializationType)
            {
                case UniJSON.EnumSerializationType.AsInt:
                    return string.Format("({0}){1}.GetInt32()", m_type.Name, argName);

                case UniJSON.EnumSerializationType.AsLowerString:
                    // (ProjectionType)Enum.Parse(typeof(ProjectionType), kv.Value.GetString(), true)
                    return $"({m_type.Name})Enum.Parse(typeof({m_type.Name}), {argName}.GetString(), true)";

                default:
                    throw new NotImplementedException();
            }
        }
    }
}