using FlutterCodeGenerator.Helper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace FlutterCodeGenerator.ModelTypes
{
    internal class UserDefinedDerivedModelType : ComplexModelType
    {
        public ModelType BaseType;

        public UserDefinedDerivedModelType(Type type, string name) : base(type, name)
        {
            BaseType = ModelTypeGenerator.Create(type.BaseType, "");
            if (!(BaseType is UserDefinedGenericModelType))
            {
                var properties = type.GetProperties();
                foreach (var property in properties)
                {
                    var child = ModelTypeGenerator.Create(property.PropertyType, property.Name);
                    Children.Add(child);
                }
            }
        }

        public override string GetFlutterTypeName(bool isDefault = true, bool isGenericName = false, bool isSingle = false)
        {
            if (Index > 1)
            {
                return $"{ParameterType.Name}{Index}";
            }
            else
            {
                return $"{ParameterType.Name}";
            }
        }

        public override string GetDartString()
        {
            var dartString = new StringBuilder();
            dartString.AppendLine($"class {GetFlutterTypeName()} extends {BaseType.GetFlutterTypeName()}{{");
            var baseType = BaseType as ComplexModelType;
            foreach (var child in Children)
            {
                if (baseType != null)
                {
                    if (!baseType.Children.Any(x => x.ParameterType == child.ParameterType && x.Name_Upper == child.Name_Upper))
                    {
                        var questionMark = QuestionMarkCheck(child);
                        if (child is ListModelType || child is DictionaryModelType || child is UserDefinedGenericModelType)
                        {
                            dartString.AppendLine($"\t{child.GetFlutterTypeName(false, false)}{questionMark} {child.Name_Lower};");
                        }
                        else
                        {
                            dartString.AppendLine($"\t{child.GetFlutterTypeName()}{questionMark} {child.Name_Lower};");
                        }
                    }
                    else
                    {
                        continue;
                    }
                }
                else
                {
                    var questionMark = QuestionMarkCheck(child);
                    if (child is ListModelType || child is DictionaryModelType || child is UserDefinedGenericModelType)
                    {
                        dartString.AppendLine($"\t{child.GetFlutterTypeName(false, false)}{questionMark} {child.Name_Lower};");
                    }
                    else
                    {
                        dartString.AppendLine($"\t{child.GetFlutterTypeName()}{questionMark} {child.Name_Lower};");
                    }
                }
            }
            dartString.AppendLine();
            if (Children.Count == 0)
            {
                dartString.AppendLine($"\t{GetFlutterTypeName()}(");
                if (baseType != null && !(baseType is UserDefinedGenericModelType))
                {
                    dartString.AppendLine($"\t) : super(");
                    foreach (var child in baseType.Children)
                    {
                        dartString.AppendLine($"\t\t\t{child.Name_Lower}: {child.Name_Lower},");
                    }
                    dartString.AppendLine($"\t\t);");
                }
                else
                {
                    dartString.AppendLine("\t);");
                }
            }
            else
            {
                dartString.AppendLine($"\t{GetFlutterTypeName()}({{");
                foreach (var child in Children)
                {
                    if (baseType != null)
                    {
                        if (baseType.Children.Any(x => x.ParameterType == child.ParameterType && x.Name_Upper == child.Name_Upper))
                        {
                            var questionMark = QuestionMarkCheck(child);
                            if (child.DefaultValue != null)
                            {
                                if (child is ListModelType || child is DictionaryModelType || child is UserDefinedGenericModelType)
                                {
                                    dartString.AppendLine($"\t\t{child.GetFlutterTypeName(false, false)}{questionMark} {child.Name_Lower} = {child.DefaultValue},");
                                }
                                else
                                {
                                    dartString.AppendLine($"\t\t{child.GetFlutterTypeName()}{questionMark} {child.Name_Lower} = {child.DefaultValue},");
                                }
                            }
                            else
                            {
                                if (child is ListModelType || child is DictionaryModelType || child is UserDefinedGenericModelType)
                                {
                                    dartString.AppendLine($"\t\t{child.GetFlutterTypeName(false, false)}{questionMark} {child.Name_Lower},");
                                }
                                else
                                {
                                    dartString.AppendLine($"\t\t{child.GetFlutterTypeName()}{questionMark} {child.Name_Lower},");
                                }
                            }
                        }
                        else
                        {
                            if (child.DefaultValue != null)
                            {
                                dartString.AppendLine($"\t\tthis.{child.Name_Lower} = {child.DefaultValue},");
                            }
                            else
                            {
                                dartString.AppendLine($"\t\tthis.{child.Name_Lower},");
                            }
                        }
                    }
                    else
                    {
                        if (child.DefaultValue != null)
                        {
                            dartString.AppendLine($"\t\tthis.{child.Name_Lower} = {child.DefaultValue},");
                        }
                        else
                        {
                            dartString.AppendLine($"\t\tthis.{child.Name_Lower},");
                        }
                    }
                }
                if (baseType != null)
                {
                    dartString.AppendLine($"\t}}) : super(");
                    foreach (var child in baseType.Children)
                    {
                        dartString.AppendLine($"\t\t\t{child.Name_Lower}: {child.Name_Lower},");
                    }
                    dartString.AppendLine($"\t\t);");
                }
                else
                {
                    dartString.AppendLine("\t});");
                }
            }

            dartString.AppendLine();
            dartString.Append(FromJson(Children));
            dartString.Append(ToJson(Children));
            dartString.AppendLine("}");
            return dartString.ToString();
        }

        protected override string ToJson(List<ModelType> Children)
        {
            var source = new StringBuilder();
            source.AppendLine("\tMap<String, dynamic> toJson() {");
            source.AppendLine("\t\tfinal map = super.toJson();");
            foreach (var child in Children)
            {
                if (BaseType is ComplexModelType complexModelType)
                {
                    if (!complexModelType.Children.Any(x => x.ParameterType == child.ParameterType && x.Name_Upper == child.Name_Upper))
                    {
                        if (child is EnumModelType)
                        {
                            source.AppendLine($"\t\tmap['{child.Name_Upper}'] = {child.Name_Lower}.index;");
                        }
                        else if (child.DefaultValue != null)
                        {
                            source.AppendLine($"\t\tmap['{child.Name_Upper}'] = {child.Name_Lower};");
                        }
                        else if (child is DateTimeModelType)
                        {
                            source.AppendLine($"\t\tif({child.Name_Lower} != null)");
                            source.AppendLine($"\t\t\tmap['{child.Name_Upper}'] = JsonRpcUtils.dateFormat({child.Name_Lower}!);");
                        }
                        else
                        {
                            source.AppendLine($"\t\tif({child.Name_Lower} != null)");
                            source.AppendLine($"\t\t\tmap['{child.Name_Upper}'] = {child.Name_Lower};");
                        }
                    }
                }
            }
            source.AppendLine("\t\treturn map;");
            source.AppendLine("\t}");
            return source.ToString();
        }
    }
}