using System.Linq;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.JsonPatch;
using EnumsNET;
using AyaNova.Util;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Biz;
using AyaNova.Models;


namespace AyaNova.Biz
{


    //THIS IS USED BY THE ATTACHMENT CONTROLLER
    //IN THEORY WE ONLY NEED TO CHECK FOR ATTACHABLE TYPES, BUT I CAN SEE IT'S POTENTIAL USEFULNESS DOWN THE ROAD FOR OTHER THINGS
    internal static class BizObjectExistsInDatabase
    {

        //THIS IS THE METHOD CALLED BY THE ATTACHMENT CONTROLLER
        internal static bool Exists(AyaTypeId tid)
        {
            return Exists(tid.ObjectType, tid.ObjectId);
        }


        //Returns existance status of object type and id specified in database
        internal static bool Exists(AyaType aytype, long id, AyContext ct = null)
        {
            //new up a context??
            if (ct == null)
            {
                ct = ServiceProviderProvider.DBContext;
            }
            switch (aytype)
            {
                case AyaType.User:
                    return ct.User.Any(m => m.Id == id);
                case AyaType.Widget:
                    return ct.Widget.Any(m => m.Id == id);
                case AyaType.FileAttachment:
                    return ct.FileAttachment.Any(m => m.Id == id);
                case AyaType.DataListFilter:
                    return ct.DataListFilter.Any(m => m.Id == id);
                case AyaType.DataListTemplate:
                    return ct.DataListTemplate.Any(m => m.Id == id);
                case AyaType.FormCustom:
                    return ct.FormCustom.Any(m => m.Id == id);



                default:
                    throw new System.NotSupportedException($"AyaNova.Biz.BizObjectExistsInDatabase::Exists type {aytype.ToString()} is not supported");
            }

        }





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

    }//eoc


}//eons