using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Newtonsoft.Json.Linq;
using AyaNova.Util;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Models;



namespace AyaNova.Biz
{

    //Only one dashboard view per user and there is always one so no delete method, not create method 
    internal class DashboardViewBiz : BizObject
    {

        internal DashboardViewBiz(AyContext dbcontext, long currentUserId, long userTranslationId, AuthorizationRoles UserRoles)
        {
            ct = dbcontext;
            UserId = currentUserId;
            UserTranslationId = userTranslationId;
            CurrentUserRoles = UserRoles;
            BizType = AyaType.DashboardView;
        }

        internal static DashboardViewBiz GetBiz(AyContext ct, Microsoft.AspNetCore.Http.HttpContext httpContext = null)
        {
            if (httpContext != null)
                return new DashboardViewBiz(ct, UserIdFromContext.Id(httpContext.Items), UserTranslationIdFromContext.Id(httpContext.Items), UserRolesFromContext.Roles(httpContext.Items));
            else
                return new DashboardViewBiz(ct, 1, ServerBootConfig.AYANOVA_DEFAULT_TRANSLATION_ID, AuthorizationRoles.BizAdmin);
        }

 

        ////////////////////////////////////////////////////////////////////////////////////////////////
        //EXISTS 
        internal async Task<bool> ExistsAsync()
        {
            return await ct.DashboardView.AnyAsync(z => z.UserId == UserId);
        }




        ////////////////////////////////////////////////////////////////////////////////////////////////
        /// GET

        //Get one - will create if there isn't one to get
        internal async Task<DashboardView> GetAsync()
        {
            //This is simple so nothing more here, but often will be copying to a different output object or some other ops           
            var ret = await ct.DashboardView.SingleOrDefaultAsync(z => z.UserId == UserId);
            if (ret == null)
            {
                ret = new DashboardView();
                ret.UserId = UserId;
                ct.DashboardView.Add(ret);
                await ct.SaveChangesAsync();
            }
            return ret;
        }





        ////////////////////////////////////////////////////////////////////////////////////////////////
        //UPDATE
        //

        //put
        internal async Task<bool> PutAsync(DashboardView dbObject, string theView)
        {
            //todo: check this, is it correct to not be using the standard PUT methodology
            dbObject.View = theView;
            Validate(dbObject, false);
            if (HasErrors)
                return false;
            await ct.SaveChangesAsync();
            return true;
        }




        ////////////////////////////////////////////////////////////////////////////////////////////////
        //VALIDATION
        //

        //Can save or update?
        private void Validate(DashboardView inObj, bool isNew)
        {
            //Filter json must parse
            //this is all automated normally so not going to do too much parsing here
            //just ensure it's basically there
            if (!string.IsNullOrWhiteSpace(inObj.View))
            {
                try
                {
                    var v = JArray.Parse(inObj.View);

                }
                catch (Newtonsoft.Json.JsonReaderException ex)
                {
                    AddError(ApiErrorCode.VALIDATION_INVALID_VALUE, "DashboardView", "DashboardView is not valid JSON string: " + ex.Message);

                }
            }

            return;
        }



        /////////////////////////////////////////////////////////////////////

    }//eoc


}//eons