using NLog;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

/*------------------------------------------------
 * Aggiunto fix come da link seguente:
 * 
 * https://stackoverflow.com/questions/14033193/entity-framework-provider-type-could-not-be-loaded
 * 
 * I solved this by adding an using stament on top of my DBContext class, like so:
 * using SqlProviderServices= System.Data.Entity.SqlServer.SqlProviderServices;
 *
 */
namespace EgwProxy.Icoel.DataLayer.Controllers
{
    /// <summary>
    /// Controller accesso dati DB vari x ICOEL
    /// </summary>
    public class DbController : IDisposable
    {
        #region Private Fields

        private static EntrataDbContext dbEntrataCtx;
        private static ExportDbContext dbExportCtx;
        private static TrackerDbContext dbTrackerCtx;
        private static SyncStateDbContext dbSyncStateCtx;
        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();

        #endregion Private Fields

        #region Public Constructors

        /// <summary>
        /// Avvio dell'oggetto gestione DB con le 3 stringhe di connessione specifiche
        /// </summary>
        /// <param name="connEntrata">Connesisone Db frontiera Entrata Merce</param>
        /// <param name="connTracker">Connessione DB Tracker</param>
        /// <param name="connExport">Connessione DB IcoelExport</param>
        /// <param name="connSyncState">Connessione DB locale di SYNC</param>
        public DbController(string connEntrata, string connTracker, string connExport, string connSyncState)
        {
            dbEntrataCtx = new EntrataDbContext(connEntrata);
            Log.Info("Avviata classe EntrataDbContext");
            dbExportCtx = new ExportDbContext(connExport);
            Log.Info("Avviata classe ExportDbContext");
            dbTrackerCtx = new TrackerDbContext(connTracker);
            Log.Info("Avviata classe dbTrackerCtx");
            dbSyncStateCtx = new SyncStateDbContext(connSyncState);
            Log.Info("Avviata classe dbSyncStateCtx");
        }

        #endregion Public Constructors


        #region Public Methods

        /// <summary>
        /// Dispose classe
        /// </summary>
        public void Dispose()
        {
            // Clear database context
            dbEntrataCtx.Dispose();
            dbExportCtx.Dispose();
            dbTrackerCtx.Dispose();
            dbSyncStateCtx.Dispose();
        }

        /// <summary>
        /// Elenco record Entrata Merce (Frontiera)
        /// </summary>
        /// <param name="minIdx">idx da cui partire a recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.EntrataModel> EntrateGetFromIdx(int minIdx = 0)
        {
            List<DatabaseModels.EntrataModel> dbResult = new List<DatabaseModels.EntrataModel>();
            dbResult = dbEntrataCtx
                .DbSetEntrataMerce
                .Where(x => (x.ID_CHIAVE >= minIdx))
                .OrderBy(x => x.ID_CHIAVE)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Elenco ultimi record Entrata Merce (Frontiera)
        /// </summary>
        /// <param name="numRec">numero records da recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.EntrataModel> EntrateGetLast(int numRec = 100)
        {
            List<DatabaseModels.EntrataModel> dbResult = new List<DatabaseModels.EntrataModel>();
            dbResult = dbEntrataCtx
                .DbSetEntrataMerce
                .OrderByDescending(x => x.ID_CHIAVE)
                .Take(numRec)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Elenco record ProductsTotal (da Icoel Export Products)
        /// </summary>
        /// <param name="minIdx">idx da cui partire a recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.ProductsTotalsModel> ExportProductsGetFromIdx(int minIdx = 0)
        {
            List<DatabaseModels.ProductsTotalsModel> dbResult = new List<DatabaseModels.ProductsTotalsModel>();
            dbResult = dbExportCtx
                .DbSetProductsTotals
                .Where(x => (x.SizerBatchId >= minIdx))
                .OrderBy(x => x.SizerBatchId)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Elenco ultimi record ProductsTotal (da Icoel Export Products)
        /// </summary>
        /// <param name="numRec">numero records da recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.ProductsTotalsModel> ExportProductsGetLast(int numRec = 0)
        {
            List<DatabaseModels.ProductsTotalsModel> dbResult = new List<DatabaseModels.ProductsTotalsModel>();
            dbResult = dbExportCtx
                .DbSetProductsTotals
                .OrderByDescending(x => x.SizerBatchId)
                .ThenByDescending(x => x.Index)
                .Take(numRec)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Esegue una volta la stored di ImportAll (x recupero dati da DB esterni) e poi restitusice in output la tab di SyncState x verificare lo stato
        /// </summary>
        /// <returns></returns>
        public List<DatabaseModels.SyncStateModel> SyncStateDoImportAll()
        {
            List<DatabaseModels.SyncStateModel> dbResult = new List<DatabaseModels.SyncStateModel>();

            dbResult = dbSyncStateCtx
                .Database
                .SqlQuery<DatabaseModels.SyncStateModel>("EXEC stp_ImportAll")
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Esegue una volta la stored di ImportAll (x recupero dati da DB esterni) e poi restitusice in output la tab di SyncState x verificare lo stato
        /// </summary>
        /// <returns></returns>
        public List<DatabaseModels.SyncStateModel> SyncStateDoExportAll()
        {
            List<DatabaseModels.SyncStateModel> dbResult = new List<DatabaseModels.SyncStateModel>();

            dbResult = dbSyncStateCtx
                .Database
                .SqlQuery<DatabaseModels.SyncStateModel>("EXEC stp_ExportAll")
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// recupera la tab di SyncState corrente
        /// </summary>
        /// <returns></returns>
        public List<DatabaseModels.SyncStateModel> SyncStateGetAll()
        {
            List<DatabaseModels.SyncStateModel> dbResult = new List<DatabaseModels.SyncStateModel>();

            dbResult = dbSyncStateCtx
                .DbSetSyncState
                .ToList();

            return dbResult;
        }
        /// <summary>
        /// Elenco record DettConfezioni (da Icoel TrackerLotti)
        /// </summary>
        /// <param name="minIdx">idx da cui partire a recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.DettConfezioniModel> TrackConfezioniGetFromIdx(int minIdx = 0)
        {
            List<DatabaseModels.DettConfezioniModel> dbResult = new List<DatabaseModels.DettConfezioniModel>();
            dbResult = dbTrackerCtx
                .DbSetConfezioni
                .Where(x => (x.Pack_Id >= minIdx))
                .OrderBy(x => x.Pack_Id)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Elenco ultimi record DettaglioConfezioni (da Icoel TrackerLotti)
        /// </summary>
        /// <param name="numRec">numero records da recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.DettConfezioniModel> TrackConfezioniGetLast(int numRec = 0)
        {
            List<DatabaseModels.DettConfezioniModel> dbResult = new List<DatabaseModels.DettConfezioniModel>();
            dbResult = dbTrackerCtx
                .DbSetConfezioni
                .OrderByDescending(x => x.Pack_Id)
                .Take(numRec)
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Elenco dettaglio conferimento x PackId (da Icoel TrackerLotti)
        /// ATTENZIONE: in caso di mancata associazione lotto ingresso con lavorazione corrente la vista restituisce nuovo (possibile lavorare senza lotto ingresso e senza tracking)
        /// </summary>
        /// <param name="packId">idx da cui partire a recuperare</param>
        /// <returns></returns>
        public List<DatabaseModels.DettConferimentoModel> TrackPackConfDetailByIdx(long packId = 0)
        {
            List<DatabaseModels.DettConferimentoModel> dbResult = new List<DatabaseModels.DettConferimentoModel>();
            dbResult = dbTrackerCtx
                .DbSetConferimento
                .Where(x => (x.PackId == packId))
                .OrderBy(x => x.NUMERO_LOTTO)
                .ThenByDescending(x => x.QUANTITA_ENTRATA)
                .ToList();

            return dbResult;
        }

        #endregion Public Methods
    }
}