using AsbCloudApp.Data.SAUB;
using AsbCloudApp.Services;
using AsbCloudDb;
using AsbCloudDb.Model;
using Microsoft.Extensions.Caching.Memory;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudInfrastructure.Services.SAUB
{

    public class EventService : IEventService
    {
        private readonly IAsbCloudDbContext db;
        private readonly IMemoryCache memoryCache;
        private readonly ITelemetryService telemetryService;

        public EventService(IAsbCloudDbContext db, IMemoryCache memoryCache, ITelemetryService telemetryService)
        {
            this.db = db;
            this.memoryCache = memoryCache;
            this.telemetryService = telemetryService;
        }

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

            var telemetry = telemetryService.GetOrCreateTelemetryByUid(uid);

            var entities = dtos.Select(dto => new TelemetryEvent
            {
                IdEvent = dto.Id,
                IdTelemetry = telemetry.Id,
                IdCategory = dto.IdCategory,
                MessageTemplate = dto.Message
            });
            var result = await db.Database.ExecInsertOrUpdateAsync(db.TelemetryEvents, entities, token);
            memoryCache.DropBasic<TelemetryEvent>();
        }
    }
}