using AsbCloudApp.Data.GTR;
using AsbCloudApp.Repositories;
using AsbCloudApp.Services;
using AsbCloudWebApi.SignalR;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Threading;
using System.Threading.Tasks;
using AsbCloudApp.Exceptions;
using AsbCloudApp.Requests;
using Microsoft.AspNetCore.Http;
using AsbCloudApp.Data;
using System;
using Org.BouncyCastle.Asn1.Ocsp;

namespace AsbCloudWebApi.Controllers.SAUB;


[Route("api/[controller]")]
[ApiController]
public class GtrWitsController : ControllerBase

{
    protected readonly IWellService wellService;
    private readonly ITelemetryService telemetryService;
    private readonly IGtrRepository gtrRepository;
    private readonly IHubContext<TelemetryHub> telemetryHubContext;

    public string SignalRMethodGetDataName { get; protected set; } = "ReceiveData";

    public GtrWitsController(
        ITelemetryService telemetryService,
        IGtrRepository gtrRepository,
        IWellService wellService,
        IHubContext<TelemetryHub> telemetryHubContext)
    {
        this.telemetryService = telemetryService;
        this.gtrRepository = gtrRepository;
        this.wellService = wellService;
        this.telemetryHubContext = telemetryHubContext;
    }

    /// <summary>
    /// Получить значение от ГТИ
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="request"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet]
    [Permission]
    [ProducesResponseType(typeof(IEnumerable<GtrWitsDto>), StatusCodes.Status200OK)]
    public async Task<IActionResult> GetAllAsync([Required] int idWell, [FromQuery] GtrRequest request, CancellationToken token)
    {
        await AssertUserHasAccessToWellAsync(idWell, token);

        var dtos = await gtrRepository.GetAsync(idWell, request, token);

        return Ok(dtos);
    }

    /// <summary>
    /// Возвращает диапазон дат за которые есть телеметрия за период времени
    /// </summary>
    /// <param name="idWell"></param>
    /// <param name="geDate"></param>
    /// <param name="leDate"></param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet("{idWell}/dateRange")]
    [ProducesResponseType(typeof(DatesRangeDto), (int)System.Net.HttpStatusCode.OK)]
    [ProducesResponseType((int)System.Net.HttpStatusCode.NotFound)]
    [ProducesResponseType((int)System.Net.HttpStatusCode.NoContent)]
    public virtual async Task<ActionResult<DatesRangeDto?>> GetRangeAsync(
        [FromRoute] int idWell,
        DateTimeOffset? geDate,
        DateTimeOffset? leDate,
        CancellationToken token)
    {
        await AssertUserHasAccessToWellAsync(idWell, token);

        var range = await gtrRepository.GetRangeAsync(idWell, geDate, leDate, token);

        return Ok(range);
    }

    /// <summary>
    /// Получить загруженные данные ГТИ по скважине
    /// </summary>
    /// <param name="idWell">Id скважины</param>
    /// <param name="request">Параметры запроса</param>
    /// <param name = "token" >Токен завершения задачи</param>
    /// <returns></returns>
    [HttpGet("{idWell}")]
    public async Task<ActionResult<IEnumerable<WitsRecordDto>>> GetDataAsync([Required] int idWell, 
        [FromQuery] GtrRequest request,
        CancellationToken token)
    {
        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();

        var content = await gtrRepository.GetAsync(idWell, request.Begin?.DateTime,
          request.IntervalSec, request.ApproxPointsCount, token).ConfigureAwait(false);

        return Ok(content);
    }

    /// <summary>
    /// получение последних данных ГТИ по ключу record
    /// </summary>
    /// <param name="idWell">id скважины</param>
    /// <param name="idRecord">id record</param>
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpGet("{idWell}/{idRecord}")]
    public async Task<ActionResult<IEnumerable<WitsItemRecordDto>>> GetLastDataByRecordIdAsync(int idWell, int idRecord, CancellationToken token)
    {
        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();

        var content = gtrRepository.GetLastDataByRecordId(idWell, idRecord);

        return Ok(content);
    }

    /// <summary>
    /// Метод для получения WITS записи от панели оператора.
    /// Сохраняет в БД.        
    /// </summary>
    /// <param name="uid">уникальный идентификатор телеметрии</param>
    /// <param name="dtos">WITS запись</param>        
    /// <param name="token"></param>
    /// <returns></returns>
    [HttpPost("{uid}")]
    public async Task<IActionResult> PostDataAsync(
        string uid,
        [FromBody] IEnumerable<WitsRecordDto> dtos,
        CancellationToken token)
    {
        var telemetry = telemetryService.GetOrCreateTelemetryByUid(uid);
        await gtrRepository.SaveDataAsync(telemetry.Id, dtos, token).ConfigureAwait(false);
        var idWell = telemetryService.GetIdWellByTelemetryUid(uid);
        if (idWell is not null && dtos is not null)
            _ = Task.Run(() => telemetryHubContext.Clients.Group($"well_{idWell}_gtr")
                  .SendAsync(SignalRMethodGetDataName, dtos), CancellationToken.None);
        return Ok();
    }
    
    private async Task AssertUserHasAccessToWellAsync(int idWell, CancellationToken token)
    {
        var idUser = User.GetUserId();
        var idCompany = User.GetCompanyId();

        if (!idUser.HasValue)
            throw new ForbidException("Нет доступа к скважине");

        if (!idCompany.HasValue)
            throw new ForbidException("Нет доступа к скважине");

        if (!await wellService.IsCompanyInvolvedInWellAsync(idCompany.Value, idWell, token))
            throw new ForbidException("Нет доступа к скважине");
    }
}