using AsbCloudApp.Comparators;
using AsbCloudApp.Data.SAUB;
using AsbCloudApp.Services;
using AsbCloudDb;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.EfCache;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services.SAUB
{
    public class TelemetryUserService : ITelemetryUserService
    {
        private readonly IAsbCloudDbContext db;
        private readonly ITelemetryService telemetryService;

        public TelemetryUserService(IAsbCloudDbContext db, ITelemetryService telemetryService)
        {
            this.db = db;
            this.telemetryService = telemetryService;
        }

        public async Task UpsertAsync(string uid, IEnumerable<TelemetryUserDto> dtos, CancellationToken token = default)
        {
            if (!dtos.Any())
                return;

            var telemetryId = telemetryService.GetOrCreateTelemetryIdByUid(uid);

            var entities = dtos.Distinct(new TelemetryUserDtoComparer()).Select(dto => new TelemetryUser
            {
                IdUser = dto.Id,
                IdTelemetry = telemetryId,
                Level = dto.Level,
                Name = dto.Name,
                Patronymic = dto.Patronymic,
                Surname = dto.Surname,
            });
            var result = await db.Database.ExecInsertOrUpdateAsync(db.TelemetryUsers, entities, token);
            db.TelemetryUsers.DropCache();
        }
    }
}