using System;
using System.Collections.Generic;
using System.Net;
using Kreta.Core.Domain;
using Kreta.Core.Enum;
using Kreta.Resources;

namespace Kreta.Core.Exceptions
{
    public class BlException : Exception
    {
        public HttpStatusCode StatusCode { get; set; }

        public BlExceptionType ExceptionType { get; }

        public BlException(BlExceptionType exceptionType) : base(exceptionType.ToDisplayName() ?? ErrorResource.IsmeretlenHibaTortent)
        {
            ExceptionType = exceptionType;
        }

        public BlException(string message) : base(message)
        {
        }

        public BlException(string message, HttpStatusCode statusCode) : base(message)
        {
            StatusCode = statusCode;
        }

        public BlException(string message, Exception exception) : base(message)
        {
            UnHandledException = exception;
        }

        public BlException(string message, BlExceptionType exceptionType) : base(message)
        {
            ExceptionType = exceptionType;
        }

        public BlException(string message, BlExceptionType exceptionType, Exception exception) : base(message)
        {
            ExceptionType = exceptionType;
            UnHandledException = exception;
        }

        public List<DetailedErrorItem> ErrorList { get; set; } = new List<DetailedErrorItem>();

        //Exception filter miatt raktam bele, ezeket a hibákat külön leloggolja, ha beleforgatjuk a StatusError-ba
        public Exception UnHandledException { get; }

        public bool IsUnHandled => InnerException != null;

        private static readonly Dictionary<BlExceptionType, HttpStatusCode> ResponseStatusCodeLookUpTable
        = new Dictionary<BlExceptionType, HttpStatusCode>
        {
                { BlExceptionType.NemLetezoEntitas, HttpStatusCode.NotFound },
                { BlExceptionType.ModelValidacio, HttpStatusCode.BadRequest },
                { BlExceptionType.NincsJogosultsag, HttpStatusCode.Forbidden },
                { BlExceptionType.TulSokVisszateresiElem, HttpStatusCode.InternalServerError },
                { BlExceptionType.ValtozoErtekeNemLehetNull, HttpStatusCode.InternalServerError },
                { BlExceptionType.None, HttpStatusCode.InternalServerError },
                { BlExceptionType.ListaNemTartalmazElemet, HttpStatusCode.InternalServerError },
                { BlExceptionType.IntezmenyMarTanevetValtott, HttpStatusCode.Conflict },
                { BlExceptionType.IntezmenyAzonositoUtkozes, HttpStatusCode.Conflict },
                { BlExceptionType.AzonositoUtkozes, HttpStatusCode.Conflict },
                { BlExceptionType.ElvartErtekNemTalalhato, HttpStatusCode.InternalServerError },
                { BlExceptionType.ListaTobbMint50ElemetTartalmaz, HttpStatusCode.BadRequest },
                { BlExceptionType.AMuveletNemVegezhetoElTobbszor, HttpStatusCode.BadRequest },
                { BlExceptionType.DuplikaltKulcs, HttpStatusCode.InternalServerError },
                { BlExceptionType.NaploZaras, HttpStatusCode.BadRequest },
                { BlExceptionType.TaskCancelled, HttpStatusCode.BadRequest },
                { BlExceptionType.FunkcioKikapcsolva, HttpStatusCode.BadRequest }
        };

        public HttpStatusCode GetResponseStatusCode()
        {
            return StatusCode == 0 ? ResponseStatusCodeLookUpTable.TryGetValue(ExceptionType, out HttpStatusCode statusCode)
                ? statusCode
                : HttpStatusCode.InternalServerError
                : StatusCode;
        }
    }
}