using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GWMS.Data.DTO;
using Microsoft.Extensions.Configuration;
using NLog;

namespace GWMS.Data.Controllers
{
    public class GWMSController : IDisposable
    {
        #region Private Fields

        private static IConfiguration _configuration;
        private static GWMSContext dbCtx;
        private static NLog.Logger Log = LogManager.GetCurrentClassLogger();

        #endregion Private Fields

        #region Public Constructors

        public GWMSController(IConfiguration configuration)
        {
            _configuration = configuration;
            dbCtx = new GWMSContext(configuration);
            Log.Info("Avviata classe GWMSController");
        }

        #endregion Public Constructors

        #region Public Methods

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

        public List<DatabaseModels.ConfigModel> GetConfig()
        {
            var dbResult = dbCtx
                .DbSetConfig
                .ToList();

            return dbResult;
        }

        public List<DatabaseModels.ItemModel> GetItems()
        {
            var dbResult = dbCtx
                .DbSetItems
                .ToList();

            return dbResult;
        }

        public DatabaseModels.PlantDetailModel GetPlant(int PlantId)
        {
            var dbResult = dbCtx
                .DbSetPlant
                .Where(x => x.PlantId == PlantId)
                .FirstOrDefault();

            return dbResult;
        }

        public List<DatabaseModels.PlantDetailModel> GetPlants()
        {
            var dbResult = dbCtx
                .DbSetPlant
                .ToList();

            return dbResult;
        }

        public List<PlantDTO> GetPlantsDTO()
        {
            var plantList = dbCtx
                .DbSetPlant
                .ToList();

            var dbResult = plantList
                .Select(x => PlantDTO(x.PlantId))
                .ToList();

            return dbResult;
        }

        /// <summary>
        /// Recupero info PLANT modalità DTO
        /// </summary>
        /// <param name="PlantId"></param>
        /// <returns></returns>
        public PlantDTO PlantDTO(int PlantId)
        {
            var currPlant = GetPlant(PlantId);

            // FIXME TODO !!!! è casuale
            Random rnd = new Random();
            int soglia01 = rnd.Next(6000, 7500);
            int soglia02 = rnd.Next(1000, 3000);
            var simLevel = rnd.Next(1, (int)currPlant.LevelMax);
            List<TSData> SimLevelTS = new List<TSData>();
            List<TSData> SimOrderTS = new List<TSData>();
            DateTime adesso = DateTime.Now;
            int lastLevel = simLevel;
            int lastOrder = 0;
            int anticipo = 0;
            for (int i = 200; i > 0; i--)
            {
                anticipo = i * 30;
                lastLevel = lastLevel - rnd.Next(0, 200);
                // se inferiore a soglia 1 --> ordine
                if (lastLevel + lastOrder < soglia01)
                {
                    lastOrder = rnd.Next(10000 - soglia01, 10000 - soglia02);
                    SimOrderTS.Add(new TSData() { DtEvent = adesso.AddMinutes(-anticipo), ValDouble = lastOrder });
                }

                // se inferiore a soglia 2 --> refill
                if (lastLevel < soglia02)
                {
                    lastLevel += lastOrder;
                    lastOrder = 0;
                }
                SimLevelTS.Add(new TSData() { DtEvent = adesso.AddMinutes(-anticipo), ValDouble = lastLevel });
                //SimLevelTS.Add(new TSData() { DtEvent = adesso.AddMinutes(-i), ValDouble = simLevel + i * 20 + rnd.Next(0, 5) });
            }

            PlantDTO answ = new PlantDTO()
            {
                PlantId = PlantId,
                PlantCode = currPlant.PlantCode,
                PlantDesc = currPlant.PlantDesc,
                LevelAct = simLevel,
                LevelMax = currPlant.LevelMax,
                LevelTS = SimLevelTS,
                OrderTS = SimOrderTS
            };
            return answ;
        }

        #endregion Public Methods
    }
}