using AsbCloudApp.Services;
using AsbCloudWebApi.SignalR;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudWebApi.Controllers.SAUB
{
    [Route("api/[controller]")]
    [ApiController]
    public abstract class TelemetryInstantDataController<TDto> : ControllerBase
    {
        private readonly ITelemetryService telemetryService;
        private readonly IWellService wellService;
        private readonly IHubContext<TelemetryHub> telemetryHubContext;
        private readonly InstantDataRepository repository;

        protected abstract string SirnalRMethodGetDataName { get; }

        public TelemetryInstantDataController(
            ITelemetryService telemetryService,
            IWellService wellService,
            IHubContext<TelemetryHub> telemetryHubContext,
            InstantDataRepository repository)
        {
            this.telemetryService = telemetryService;
            this.wellService = wellService;
            this.telemetryHubContext = telemetryHubContext;
            this.repository = repository;
        }

        /// <summary>
        /// Принимает данные от панели
        /// </summary>
        /// <param name="uid"></param>
        /// <param name="dto"></param>
        /// <returns></returns>
        [HttpPost]
        [Route("{uid}")]
        [AllowAnonymous]
        public virtual IActionResult PostData(
            string uid,
            [FromBody] TDto dto)
        {
            if (dto is null)
                return BadRequest("Dto shouldn't be null");

            var idTelemetry = telemetryService.GetOrCreateTelemetryIdByUid(uid);

            var typedStore = repository.GetOrAdd(idTelemetry, (id) => new System.Collections.Concurrent.ConcurrentDictionary<Type, object>());
            var typeDto = typeof(TDto);
            typedStore.AddOrUpdate(typeDto, dto, (_, _) => dto);

            var idWell = telemetryService.GetIdWellByTelemetryUid(uid);
            if (idWell is not null)
                _ = Task.Run(async () =>
                {
                    var clients = telemetryHubContext.Clients.Group($"well_{idWell}");
                    await clients.SendAsync(SirnalRMethodGetDataName, dto);
                }, CancellationToken.None);

            return Ok();
        }

        /// <summary>
        /// Выдает данные по скважине
        /// </summary>
        /// <param name="idWell"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpGet("{idWell}")]
        //[Permission]
        public virtual async Task<ActionResult<TDto>> GetDataAsync(
            int idWell,
            CancellationToken token = default)
        {
            int? idCompany = User.GetCompanyId();

            if (idCompany is null)
                return Forbid();

            bool isCompanyOwnsWell = await wellService.IsCompanyInvolvedInWellAsync((int)idCompany,
                idWell, token).ConfigureAwait(false);

            if (!isCompanyOwnsWell)
                return Forbid();

            int? idTelemetry = telemetryService.GetOrDefaultIdTelemetryByIdWell(idWell);
            if (idTelemetry is null)
                return NoContent();

            var typedStore = repository.GetValueOrDefault((int)idTelemetry, null);

            if (typedStore is null)
                return NoContent();

            var typeDto = typeof(TDto);
            var dto = typedStore.GetValueOrDefault(typeDto);

            return Ok(dto);
        }
    }
}