using System;
using System.Collections.Generic;
using System.Text;
using Gaia.FullSerializer.Internal;

namespace Gaia.FullSerializer
{
	public class fsAotCompilationManager
	{
		private struct AotCompilation
		{
			public Type Type;

			public fsMetaProperty[] Members;

			public bool IsConstructorPublic;
		}

		private static Dictionary<Type, string> _computedAotCompilations = new Dictionary<Type, string>();

		private static List<AotCompilation> _uncomputedAotCompilations = new List<AotCompilation>();

		public static Dictionary<Type, string> AvailableAotCompilations
		{
			get
			{
				for (int i = 0; i < _uncomputedAotCompilations.Count; i++)
				{
					AotCompilation aotCompilation = _uncomputedAotCompilations[i];
					_computedAotCompilations[aotCompilation.Type] = GenerateDirectConverterForTypeInCSharp(aotCompilation.Type, aotCompilation.Members, aotCompilation.IsConstructorPublic);
				}
				_uncomputedAotCompilations.Clear();
				return _computedAotCompilations;
			}
		}

		public static bool TryToPerformAotCompilation(Type type, out string aotCompiledClassInCSharp)
		{
			if (fsMetaType.Get(type).EmitAotData())
			{
				aotCompiledClassInCSharp = AvailableAotCompilations[type];
				return true;
			}
			aotCompiledClassInCSharp = null;
			return false;
		}

		public static void AddAotCompilation(Type type, fsMetaProperty[] members, bool isConstructorPublic)
		{
			_uncomputedAotCompilations.Add(new AotCompilation
			{
				Type = type,
				Members = members,
				IsConstructorPublic = isConstructorPublic
			});
		}

		private static string GenerateDirectConverterForTypeInCSharp(Type type, fsMetaProperty[] members, bool isConstructorPublic)
		{
			StringBuilder stringBuilder = new StringBuilder();
			string text = type.CSharpName(includeNamespace: true);
			string text2 = type.CSharpName(includeNamespace: true, ensureSafeDeclarationName: true);
			stringBuilder.AppendLine("using System;");
			stringBuilder.AppendLine("using System.Collections.Generic;");
			stringBuilder.AppendLine();
			stringBuilder.AppendLine("namespace FullSerializer {");
			stringBuilder.AppendLine("    partial class fsConverterRegistrar {");
			stringBuilder.AppendLine("        public static Speedup." + text2 + "_DirectConverter Register_" + text2 + ";");
			stringBuilder.AppendLine("    }");
			stringBuilder.AppendLine("}");
			stringBuilder.AppendLine();
			stringBuilder.AppendLine("namespace FullSerializer.Speedup {");
			stringBuilder.AppendLine("    public class " + text2 + "_DirectConverter : fsDirectConverter<" + text + "> {");
			stringBuilder.AppendLine("        protected override fsResult DoSerialize(" + text + " model, Dictionary<string, fsData> serialized) {");
			stringBuilder.AppendLine("            var result = fsResult.Success;");
			stringBuilder.AppendLine();
			foreach (fsMetaProperty fsMetaProperty2 in members)
			{
				stringBuilder.AppendLine("            result += SerializeMember(serialized, \"" + fsMetaProperty2.JsonName + "\", model." + fsMetaProperty2.MemberName + ");");
			}
			stringBuilder.AppendLine();
			stringBuilder.AppendLine("            return result;");
			stringBuilder.AppendLine("        }");
			stringBuilder.AppendLine();
			stringBuilder.AppendLine("        protected override fsResult DoDeserialize(Dictionary<string, fsData> data, ref " + text + " model) {");
			stringBuilder.AppendLine("            var result = fsResult.Success;");
			stringBuilder.AppendLine();
			for (int j = 0; j < members.Length; j++)
			{
				fsMetaProperty fsMetaProperty3 = members[j];
				stringBuilder.AppendLine("            var t" + j + " = model." + fsMetaProperty3.MemberName + ";");
				stringBuilder.AppendLine("            result += DeserializeMember(data, \"" + fsMetaProperty3.JsonName + "\", out t" + j + ");");
				stringBuilder.AppendLine("            model." + fsMetaProperty3.MemberName + " = t" + j + ";");
				stringBuilder.AppendLine();
			}
			stringBuilder.AppendLine("            return result;");
			stringBuilder.AppendLine("        }");
			stringBuilder.AppendLine();
			stringBuilder.AppendLine("        public override object CreateInstance(fsData data, Type storageType) {");
			if (isConstructorPublic)
			{
				stringBuilder.AppendLine("            return new " + text + "();");
			}
			else
			{
				stringBuilder.AppendLine("            return Activator.CreateInstance(typeof(" + text + "), /*nonPublic:*/true);");
			}
			stringBuilder.AppendLine("        }");
			stringBuilder.AppendLine("    }");
			stringBuilder.AppendLine("}");
			return stringBuilder.ToString();
		}
	}
}