using System.Security.Principal;
using Microsoft.Extensions.Logging;
using Quadarax.Application.QLiberace.Base.Dtos;
using Quadarax.Application.QLiberace.Base.Entities;
using Quadarax.Application.QLiberace.Base.Repositories;
using Quadarax.Application.QLiberace.Common;
using Quadarax.Application.QLiberace.Common.Attributes;
using Quadarax.Application.QLiberace.Common.Settings;
using Quadarax.Foundation.Core.Business;
using Quadarax.Foundation.Core.Data;
using Quadarax.Foundation.Core.Data.Interface;
using Quadarax.Foundation.Core.Data.Interface.Entity.Dto;
using Quadarax.Foundation.Core.Reflection;

namespace Quadarax.Application.QLiberace.Base.Services
{
    internal class SettingsService : AbstractRepositoryService<RepoSetting>
    {
        #region *** Constructor ***
        public SettingsService(RepoSetting repository, IPrincipal currentPrincipal, ILoggerFactory logger) : base(repository, currentPrincipal, logger)
        {
        }
        #endregion

        #region *** Public Operations ***

        public ResultDto CreateSettings<TSettings>(ModuleSetting settings) where TSettings : ModuleSetting
        {
            if (settings == null)
                throw new ArgumentNullException(nameof(settings));

            return TryCatchBlock(() =>
            {
                var attrs = AttributeQuery<ModuleAttribute>.FindAll(typeof(TSettings), true);
                if (attrs.Length == 0)
                    throw new InvalidOperationException(
                        $"ModuleAttribute is not defined on class '{typeof(TSettings).Name}'.");
                if (attrs.Length > 1)
                    throw new InvalidOperationException(
                        "ModuleAttribute is defined on more than one ModuleSetting class.");


                var settingsFlat = settings.GetData();
                foreach (var flat in settingsFlat)
                {
                    var setting = Repository.New();
                    setting.Code = flat.Item1;
                    setting.ModuleCode = attrs[0].ModuleCode;
                    setting.IsEnabled = true;
                    setting.Description = string.Empty;
                    setting.ValueTypeQualified = flat.Item2;
                    setting.Value = flat.Item3?.ToString();
                    Repository.Set(setting);
                }

                Repository.Commit();
                return new ResultPlain();
            });
        }

        public ResultValueDto<TSettings> GetSettings<TSettings>(string moduleCode) where TSettings : ModuleSetting, new()
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));

            return TryCatchBlock(() =>
            {
                if (!Repository.QueryModule(moduleCode, Paging.NoPaging()).Any()) 
                    throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsNotFoundForModuleCode, moduleCode);
                
                var settingDto = default(TSettings);
                if (settingDto == null) throw new ArgumentNullException(nameof(settingDto));

                var settings = Repository.QueryModule(moduleCode,Paging.NoPaging());

                settingDto.SetData(settings.Select(x=>new Tuple<string, string, object?>(x.Code,x.ValueTypeQualified,x.GetTypedValue())));

                return new ResultValueDto<TSettings>(settingDto);
            });

        }

        public ResultValueDto GetSettingsValue<TValue>(string moduleCode, string valueCode)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            if (string.IsNullOrEmpty(valueCode)) throw new ArgumentNullException(nameof(valueCode));

            return TryCatchBlock(() =>
            {
                var settings = GetSettings(moduleCode, valueCode);

                if (settings == null)
                    throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsNotFoundCode, valueCode, moduleCode);

                return new ResultValueDto(settings.GetTypedValue<TValue>());

            });
        }

        public ResultBoolDto ExistsSettings(string moduleCode)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));

            return TryCatchBlock(() =>
            {
                var result = Repository.QueryModule(moduleCode, Paging.NoPaging()).Any();
                return new ResultBoolDto(result);
            });
        }

        public ResultBoolDto ExistsSettingsValue(string moduleCode, string valueCode)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            if (string.IsNullOrEmpty(valueCode)) throw new ArgumentNullException(nameof(valueCode));

            return TryCatchBlock(() =>
            {
                var result = Repository.QueryModule(moduleCode, Paging.NoPaging()).Any(x => x.Code == valueCode);
                return new ResultBoolDto(result);
            });
        }

        public ResultDto AddSettingsValue(string moduleCode, string valueCode, string valueDescription, object value)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            if (string.IsNullOrEmpty(valueCode)) throw new ArgumentNullException(nameof(valueCode));

            return TryCatchBlock(() =>
            {
                var exists = ExistsSettingsValue(moduleCode, valueCode);
                if (!exists.IsSuccess) return (ResultDto)exists;

                if (exists.Value)
                    throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsAlreadyExistsCode, valueCode, moduleCode);

                var settings = Repository.New();

                settings.ModuleCode = moduleCode;
                settings.Code = valueCode;
                settings.Description = valueDescription;
                settings.Value = value?.ToString();
                settings.IsEnabled = true;
                Repository.Commit();
                return new ResultPlain();
            });
        }

        public ResultDto UpdateSettings<TSettings>(ModuleSetting settings) where TSettings : ModuleSetting
        {
            if (settings == null)
                throw new ArgumentNullException(nameof(settings));

            return TryCatchBlock(() =>
            {
                var attrs = AttributeQuery<ModuleAttribute>.FindAll(typeof(TSettings), true);
                if (attrs.Length == 0)
                    throw new InvalidOperationException(
                        $"ModuleAttribute is not defined on class '{typeof(TSettings).Name}'.");
                if (attrs.Length > 1)
                    throw new InvalidOperationException(
                        "ModuleAttribute is defined on more than one ModuleSetting class.");

                var settingsFlat = settings.GetData();
                foreach (var flat in settingsFlat)
                {
                    var setting = GetSettings(attrs[0].ModuleCode, flat.Item1);

                    if (setting == null)
                        throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsNotFoundCode, flat.Item1, attrs[0].ModuleCode);
                    Repository.Set(setting);
                }

                Repository.Commit();
                return new ResultPlain();
            });
        }

        public ResultDto UpdateSettingsValue(string moduleCode, string valueCode, object value)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            if (string.IsNullOrEmpty(valueCode)) throw new ArgumentNullException(nameof(valueCode));

            return TryCatchBlock(() =>
            {
                var exists = ExistsSettingsValue(moduleCode, valueCode);
                if (!exists.IsSuccess) return (ResultDto)exists;

                if (!exists.Value)
                    throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsNotFoundCode, valueCode, moduleCode);

                var settings = Repository.Get(moduleCode, valueCode);
                if (settings==null)
                    throw ExceptionFactory.CreateException(ExceptionLibrary.ExceptionsCodes.SettingsNotFoundCode, valueCode, moduleCode);

                settings.Value = value?.ToString();
                Repository.Commit();
                
                return new ResultPlain();
            });

        }

        public ResultDto AddOrUpdateSettingsValue(string moduleCode, string valueCode, object value)
        {
            return AddOrUpdateSettingsValue(moduleCode, valueCode, value, string.Empty);
        }

        public ResultDto AddOrUpdateSettingsValue(string moduleCode, string valueCode, object value, string valueDescription)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            if (string.IsNullOrEmpty(valueCode)) throw new ArgumentNullException(nameof(valueCode));

            return TryCatchBlock(() =>
            {
                var exists = ExistsSettingsValue(moduleCode, valueCode);
                if (!exists.IsSuccess) return (ResultDto)exists;

                if (exists.Value)
                {
                    return UpdateSettingsValue(moduleCode, valueCode, value);
                }
                else
                {
                    return AddSettingsValue(moduleCode, valueCode, valueDescription, value);
                }
            });
        }

        public ResultSettingsValuesListDto GetSettingsValues(string moduleCode, IPaging paging)
        {
            if (string.IsNullOrEmpty(moduleCode)) throw new ArgumentNullException(nameof(moduleCode));
            return TryCatchBlock(() =>
            {

                var result = Repository.QueryModule(moduleCode, paging)
                    .ToDictionary(x => x.Code, y => y.GetTypedValue<object>());

                return new ResultSettingsValuesListDto(result);
            });
        }
        #endregion

        #region ** Private Operations ***

        private Setting? GetSettings(string moduleCode, string valueCode)
        {
            var settings = Repository.Get(moduleCode, valueCode);

            return settings;
        }

        #endregion
        
    }
}