using System;
using System.Net;
using Kreta.BusinessLogic.Classes.MobileApi.Naplo.V2.Logic;

namespace Kreta.BusinessLogic.Classes.MobileApi.Naplo.V2.Co
{
    public sealed class ResponseWrapperCo<T> where T : class, new()
    {
        public HttpStatusCode StatusCode { get; private set; } = HttpStatusCode.NotFound;
        public DateTime UtolsoSzinkronDatumUtc { get; } = DateTime.UtcNow;
        public string Hash => string.IsNullOrWhiteSpace(DatabaseHash + SourceHash) ? null : DatabaseHash + "." + SourceHash;
        public bool IsHashesOk => IsDatabaseHashOk && IsSourceHashOk;
        public bool IsDatabaseHashOk
            => !string.IsNullOrWhiteSpace(RequestHash) && !string.IsNullOrWhiteSpace(DatabaseHash) && RequestHash.StartsWith(DatabaseHash, StringComparison.CurrentCultureIgnoreCase);
        public bool IsSourceHashOk
            => !string.IsNullOrWhiteSpace(RequestHash) && !string.IsNullOrWhiteSpace(SourceHash) && RequestHash.EndsWith(SourceHash, StringComparison.CurrentCultureIgnoreCase);
        private string RequestHash { get; }
        private string DatabaseHash { get; }
        private string SourceHash { get; set; }
        public T Adatcsomag { get; private set; } = null;

        private ResponseWrapperCo() { }
        public ResponseWrapperCo(string requestHash, string databaseHash = null)
        {
            RequestHash = requestHash;
            DatabaseHash = databaseHash;
        }

        /// <param name="isStrictMode">True: Adatcsomag prop is only assigned if all hash are ok.</param>
        public void FillData(T adatcsomag, bool isStrictMode = false)
        {
            StatusCode = HttpStatusCode.OK;
            SourceHash = HashLogic.CreateSourceHash(adatcsomag);
            if (isStrictMode)
            {
                Fill(IsHashesOk, adatcsomag);
            }
            else
            {
                Fill(IsSourceHashOk, adatcsomag);
            }
        }

        private void Fill(bool isHashOk, T adatcsomag)
        {
            if (isHashOk)
            {
                StatusCode = HttpStatusCode.NotModified;
            }
            else
            {
                Adatcsomag = adatcsomag;
            }
        }
    }
}