using AsbCloudApp.Data;
using AsbCloudApp.Services;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.Services.Cache;
using System.Collections.Generic;
using System.Linq;
using System;

namespace AsbCloudInfrastructure.Services
{
    public class WellService : IWellService
    {
        private readonly IAsbCloudDbContext db;
        private readonly ITelemetryTracker telemetryTracker;
        private readonly ICacheTable<Well> cacheWells;

        public WellService(IAsbCloudDbContext db, ITelemetryTracker telemetryTracker, CacheDb cacheDb)
        {
            this.db = db;
            this.telemetryTracker = telemetryTracker;
            cacheWells = cacheDb.GetCachedTable<Well>((AsbCloudDbContext)db);
        }

        public IEnumerable<WellDto> GetTransmittingWells(int idCustomer)
        {
            var wells = new List<Well>();
            IEnumerable<string> activeTelemetriesUids = telemetryTracker.GetTransmittingTelemetryUids();
            if (activeTelemetriesUids.Any())
            {
                wells = db.GetWellsByCustomer(idCustomer)
                    .Where(w => activeTelemetriesUids.Contains(w.Telemetry.RemoteUid))
                    .ToList();
            }
            return wells.Select(w => From(w));
        }

        public IEnumerable<WellDto> GetWellsByCustomer(int idCustomer)
        {
            var wells = db.GetWellsByCustomer(idCustomer).ToList();
            return wells.Select(w => From(w));
        }

        public bool CheckWellOwnership(int idCustomer, int wellId)
         => cacheWells.Contains(w => w.Id == wellId && w.IdCustomer == idCustomer);


        private static WellDto From(Well well)
        {
            var wellDto = new WellDto
            {
                Id = well.Id,
                Caption = well.Caption,
                Cluster = well.Cluster.Caption,
                Deposit = well.Cluster.Deposit.Caption,
            };

            return wellDto;
        }

    }
}