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

namespace FlutterCodeGenerator
{
    internal class OtherServiceMap : IServiceMap
    {
        private List<Type> _typeList;
        private string _serviceName;
        public List<ComplexModelType> UsedComplexModelTypeList { get; }

        public OtherServiceMap(List<Type> types)
        {
            _typeList = types;
            UsedComplexModelTypeList = new List<ComplexModelType>();
            GenerateDataCache.Instance.SetCurrentServiceMap(this);
            _serviceName = "OtherService";
            foreach (var type in _typeList)
            {
                try
                {
                    var parameterModelType = ModelTypeGenerator.Create(type, type.Name, true);
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"Type is {type.FullName},Error:{ex}");
                    throw;
                }
            }
        }

        public string GetServiceDartString()
        {
            return null;
        }

        public string GetServiceModelDartString()
        {
            var dartString = new StringBuilder();
            var importServiceList = new List<string>();
            var alreadyGeneratedList = GenerateDataCache.Instance.AlreadyGeneratedList;
            foreach (var modelType in UsedComplexModelTypeList)
            {
                if (!alreadyGeneratedList.Any(x => x.Key.ParameterType.Name == modelType.ParameterType.Name && x.Key.ParameterType.Namespace == modelType.ParameterType.Namespace))
                {
                    alreadyGeneratedList.Add(modelType, _serviceName);
                    dartString.AppendLine(modelType.GetDartString());
                }
                else
                {
                    var importService = alreadyGeneratedList.FirstOrDefault(x => x.Key.ParameterType.Name == modelType.ParameterType.Name && x.Key.ParameterType.Namespace == modelType.ParameterType.Namespace).Value;
                    if (importService == null)
                    {
                        throw new Exception("Import Service is null");
                    }
                    if (importService != _serviceName && !importServiceList.Contains(importService))
                    {
                        importServiceList.Add(importService);
                    }
                }
            }
            if (string.IsNullOrWhiteSpace(dartString.ToString()))
            {
                return null;
            }
            var serviceModelDartString = new StringBuilder();
            foreach (var importService in importServiceList)
            {
                serviceModelDartString.AppendLine($"import '{LetterConverterHelper.FirstCharToLower(importService[0..^7])}.m.dart';");
            }
            if (importServiceList.Count > 0)
            {
                serviceModelDartString.AppendLine();
            }

            var dartStringInfo = dartString.ToString();
            if (dartStringInfo.Contains("JsonRpcUtils"))
            {
                serviceModelDartString.AppendLine(CodeGenerator.StringUtils);
                serviceModelDartString.AppendLine();
            }

            if (dartStringInfo.Contains("FJsonConvert"))
            {
                serviceModelDartString.AppendLine(CodeGenerator.StringJsonConvert);
                serviceModelDartString.AppendLine();
            }
            serviceModelDartString.AppendLine(dartStringInfo);
            return serviceModelDartString.ToString();
        }
    }
}