egtbeamwall/EgtBEAMWALL.DataLayer/Controllers/DbController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EgtBEAMWALL.DataLayer.DatabaseModels;

namespace EgtBEAMWALL.DataLayer.Controllers
{
    public class DbController : IDisposable
    {
        #region Private Fields

        private AdminContext adbCtx;

        #endregion Private Fields

        #region Public Fields

        /// <summary>
        /// Singleton gestione
        /// </summary>
        public static DbController man = new DbController();

        #endregion Public Fields

        #region Public Constructors

        public DbController()
        {
            // Initialize database context for ADMIN
            adbCtx = new AdminContext(DbConfig.ADMIN_CONNECTION_STRING);
        }

        #endregion Public Constructors

        #region Public Methods

        public bool checkCreateUser(string username, string pwd)
        {
            bool answ = false;
            // ricerca utente...
            var foundUser = adbCtx
                .UserList
                .Where(x => x.User == username)
                .ToList();
            if (foundUser != null && foundUser.Count > 0)
            {
                answ = true;
            }
            if (!answ)
            {
                // creo utente
                string sqlCommand = $"ALTER USER '{username}'@'localhost' IDENTIFIED BY '{pwd}'; FLUSH PRIVILEGES;";
                adbCtx.Database.ExecuteSqlCommand(sqlCommand);
            }
            return answ;
        }

        public void Dispose()
        {
            // Clear database context
            adbCtx.Dispose();
        }

        public bool ResetDb()
        {
            bool answ = false;

            try
            {
                adbCtx
                    .Database
                    .SqlQuery<int>("CALL stp_ResetDb()");
                answ = true;

                adbCtx.SaveChanges();
            }
            catch (Exception exc)
            {
                Console.WriteLine($"EXCEPTION on ResetDb: {exc}");
            }

            return answ;
        }

        #endregion Public Methods
    }
}