using AsbCloudApp.Data;
using AsbCloudApp.Requests;
using AsbCloudApp.Services;
using AsbCloudWebApi.SignalR;
using AsbCloudWebApi.SignalR.Clients;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudWebApi.Controllers.SAUB;

[ApiController]
[Authorize]
[Route("api/[controller]")]
public abstract class TelemetryDataBaseController<TDto> : ControllerBase
    where TDto : ITelemetryData
{
    protected readonly IWellService wellService;
    private readonly ITelemetryService telemetryService;
    private readonly ITelemetryDataService<TDto> telemetryDataService;
    protected readonly IHubContext<TelemetryHub, ITelemetryHubClient> telemetryHubContext;

    public TelemetryDataBaseController(
        ITelemetryService telemetryService,
        ITelemetryDataService<TDto> telemetryDataService,
        IWellService wellService,
        IHubContext<TelemetryHub, ITelemetryHubClient> telemetryHubContext)
    {
        this.telemetryService = telemetryService;
        this.telemetryDataService = telemetryDataService;
        this.wellService = wellService;
        this.telemetryHubContext = telemetryHubContext;

    }

    protected abstract Task SignalRNotifyAsync(int idWell, IEnumerable<TDto> dtos, CancellationToken token);

    /// <summary>
    /// Принимает данные от разных систем по скважине
    /// </summary>
    /// <param name="uid">Уникальный идентификатор отправителя</param>
    /// <param name="dtos">Данные</param>
    /// <param name="token">Токен для отмены задачи</param>
    /// <returns></returns>
    [HttpPost("{uid}")]
    [AllowAnonymous]
    public virtual async Task<IActionResult> PostDataAsync(string uid, [FromBody] IEnumerable<TDto> dtos,
        CancellationToken token)
    {
        await telemetryDataService.UpdateDataAsync(uid, dtos, token).ConfigureAwait(false);

        var idWell = telemetryService.GetIdWellByTelemetryUid(uid);
        if (idWell is not null && dtos.Any())
            _ = Task.Run(() => SignalRNotifyAsync(idWell.Value, dtos, CancellationToken.None));

        return Ok();
    }

    /// <summary>
    /// Возвращает данные САУБ по скважине.
    /// По умолчанию за последние 10 минут.
    /// </summary>
    /// <param name="idWell">id скважины</param>
    /// <param name="begin">дата начала выборки. По умолчанию: текущее время - intervalSec</param>
    /// <param name="intervalSec">интервал времени даты начала выборки, секунды</param>
    /// <param name="approxPointsCount">желаемое количество точек. Если в выборке точек будет больше, то выборка будет прорежена.</param>
    /// <param name="token">Токен завершения задачи</param>
    /// <returns></returns>
    [HttpGet("{idWell}")]
    [Permission]
    public virtual async Task<ActionResult<IEnumerable<TDto>>> GetDataAsync(int idWell,
        DateTime begin = default,
        int intervalSec = 600,
        int approxPointsCount = 1024,
        //TODO: сделать cancellationToken обязательным 
        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();

        var content = await telemetryDataService.GetByWellAsync(idWell, begin,
            intervalSec, approxPointsCount, token).ConfigureAwait(false);

        return Ok(content);
    }

    /// <summary>
    /// Новая версия. Возвращает данные САУБ по скважине.
    /// По умолчанию за последние 10 минут.
    /// </summary>
    /// <param name="idWell">id скважины</param>
    /// <param name="request"></param>
    /// <param name="token">Токен завершения задачи</param>
    /// <returns></returns>
    [HttpGet("{idWell}/data")]
    [Permission]
    public virtual async Task<ActionResult<IEnumerable<TDto>>> GetData2Async(int idWell,
        [FromQuery]TelemetryDataRequest 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 telemetryDataService.GetByWellAsync(idWell, request, token);

        return Ok(content);
    }

    /// <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,
        [Required] DateTimeOffset geDate,
        DateTimeOffset? leDate,
        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 telemetryDataService.GetRangeAsync(idWell, geDate, leDate, token);

        if (content is null)
            return NoContent();

        return Ok(content);
    }

    /// <summary>
    /// Возвращает диапазон дат сохраненных данных.
    /// </summary>
    /// <param name="idWell">id скважины</param>
    /// <param name="token">Токен завершения задачи</param>
    /// <returns></returns>
    [HttpGet("{idWell}/datesRange")]
    [Permission]
    [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?>> GetDataDatesRangeAsync(int idWell,
        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();
        try
        {
            var dataDatesRange = wellService.GetDatesRange(idWell);
            return Ok(dataDatesRange);
        }
        catch(KeyNotFoundException)
        {
            return NoContent();
        }
    }
}