using AsbCloudApp.Data.ProcessMap;
using AsbCloudApp.Repositories;
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.ComponentModel.DataAnnotations;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;

namespace AsbCloudWebApi.Controllers
{
    /// <summary>
    /// РТК
    /// </summary>
    [ApiController]
    [Route("api/[controller]")]
    [Authorize]
    public class ProcessMapController : CrudWellRelatedController<ProcessMapPlanDto, IProcessMapPlanRepository>
    {
        private readonly ITelemetryService telemetryService;
        private readonly IHubContext<TelemetryHub> telemetryHubContext;
        private readonly IProcessMapReportMakerService processMapReportService;
        private readonly IProcessMapService processMapService;
        private readonly IProcessMapPlanImportService processMapPlanImportService;
        private readonly IUserRepository userRepository;

        private const string SirnalRMethodGetDataName = "UpdateProcessMap";

        public ProcessMapController(
            IWellService wellService,
            IProcessMapPlanRepository repository,
            IProcessMapReportMakerService processMapReportService,
            IProcessMapService processMapService,
            ITelemetryService telemetryService,
            IHubContext<TelemetryHub> telemetryHubContext,
            IProcessMapPlanImportService processMapPlanImportService,
            IUserRepository userRepository)
            : base(wellService, repository)
        {
            this.telemetryService = telemetryService;
            this.telemetryHubContext = telemetryHubContext;
            this.processMapReportService = processMapReportService;
            this.processMapService = processMapService;
            this.processMapPlanImportService = processMapPlanImportService;
            this.userRepository = userRepository;

        }

        /// <summary>
        /// Возвращает все значения для коридоров бурения по uid панели
        /// </summary>
        /// <param name="uid"> uid панели </param>
        /// <param name="updateFrom"> Дата, с которой следует искать новые параметры </param>
        /// <param name="token"> Токен отмены задачи </param>
        /// <returns> Список параметров для коридоров бурения </returns>
        [HttpGet("/api/telemetry/{uid}/drillFlowChart")]
        [Obsolete("use GetByUidAsync(..) instead")]
        [AllowAnonymous]
        [ProducesResponseType(typeof(IEnumerable<ProcessMapPlanDto>), (int)System.Net.HttpStatusCode.OK)]
        [ProducesResponseType(typeof(ValidationProblemDetails), (int)System.Net.HttpStatusCode.BadRequest)]
        public IActionResult GetByTelemetry(string uid, DateTime updateFrom, CancellationToken token)
        {
            var idWell = telemetryService.GetIdWellByTelemetryUid(uid);
            if (idWell is null)
                return this.ValidationBadRequest(nameof(uid), $"Wrong uid {uid}");
            return Ok(Enumerable.Empty<ProcessMapPlanDto>());
        }

        /// <summary>
        /// Возвращает РТК по uid телеметрии
        /// </summary>
        /// <param name="uid"> uid телеметрии </param>
        /// <param name="updateFrom"> Дата, с которой следует искать новые параметры </param>
        /// <param name="token"> Токен отмены задачи </param>
        /// <returns> Список параметров для коридоров бурения </returns>
        [HttpGet("/api/telemetry/{uid}/processMap")]
        [AllowAnonymous]
        [ProducesResponseType(typeof(IEnumerable<ProcessMapPlanDto>), (int)System.Net.HttpStatusCode.OK)]
        [ProducesResponseType(typeof(ValidationProblemDetails), (int)System.Net.HttpStatusCode.BadRequest)]
        public async Task<IActionResult> GetByUidAsync(string uid, DateTime updateFrom, CancellationToken token)
        {
            var idWell = telemetryService.GetIdWellByTelemetryUid(uid);
            if (idWell is null)
                return this.ValidationBadRequest(nameof(uid), $"Wrong uid {uid}");

            var dto = await service.GetAllAsync((int)idWell,
                updateFrom, token);

            return Ok(dto);
        }

        /// <summary>
        /// Выгрузка расширенной РТК
        /// </summary>
        /// <param name="wellId"></param>
        /// /// <param name="token"></param>
        /// <returns></returns>
        [HttpGet("report/{wellId}")]
        [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK, "application/octet-stream")]
        [ProducesResponseType(StatusCodes.Status204NoContent)]
        public async Task<IActionResult> GetReportFileAsync(int wellId, CancellationToken token)
        {
            var stream = await processMapReportService.MakeReportAsync(wellId, token);
            if (stream != null)
            {
                var well = await wellService.GetOrDefaultAsync(wellId, token);
                if (well is null)
                    return NoContent();
                
                var fileName = $"РТК по скважине {well.Caption} куст {well.Cluster}.xlsx";
                return File(stream, "application/octet-stream", fileName);
            }
            
            return NoContent();
        }

        /// <summary>
        /// Выгрузка режимной карты по бурению скважины
        /// </summary>
        /// <param name="wellId"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpGet("report/{wellId}/data")]
        [ProducesResponseType(typeof(IEnumerable<ProcessMapReportDto>), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> GetDrillProcessMap(int wellId, CancellationToken token)
        {
            var data = await processMapService.GetProcessMapReportAsync(wellId, token);
            return Ok(data);
        }

        /// <summary>
        /// Добавить запись плановой РТК
        /// </summary>
        /// <param name="value"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpPost]
        public override async Task<ActionResult<int>> InsertAsync([FromBody] ProcessMapPlanDto value, CancellationToken token)
        {
            if (!await CanUserEditProcessMapAsync(value.IdWell, token))
                return Forbid();
            
            value.IdUser = User.GetUserId() ?? -1;
            var result = await base.InsertAsync(value, token);
            await NotifyUsersBySignalR(value.IdWell, token);
            return result;
        }

        /// <summary>
        /// Редактировать запись по id плановой РТК
        /// </summary>
        /// <param name="value">запись</param>
        /// <param name="token"></param>
        /// <returns>1 - успешно отредактировано, 0 - нет</returns>
        [HttpPut]
        public override async Task<ActionResult<int>> UpdateAsync([FromBody] ProcessMapPlanDto value, CancellationToken token)
        {
            if (!await CanUserEditProcessMapAsync(value.IdWell, token))
                return Forbid();
            
            value.IdUser = User.GetUserId() ?? -1;
            var result = await base.UpdateAsync(value, token);
            await NotifyUsersBySignalR(value.IdWell, token);
            return result;
        }

        /// <summary>
        /// Возвращает шаблон файла импорта плановой РТК
        /// </summary>
        /// <returns>Запрашиваемый файл</returns>
        [HttpGet("template")]
        [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK, "application/octet-stream")]
        public async Task<IActionResult> GetTemplateAsync(CancellationToken cancellationToken)
        {
            var stream = await processMapPlanImportService.GetExcelTemplateStreamAsync(cancellationToken);
            var fileName = "ЕЦП_шаблон_файла_РТК.xlsx";
            return File(stream, "application/octet-stream", fileName);
        }

        /// <summary>
        /// Импортирует плановой РТК из excel (xlsx) файла
        /// </summary>
        /// <param name="idWell">Id скважины</param>
        /// <param name="options">Удалить РТК перед импортом = 1, если файл валидный</param>
        /// <param name="file">Загружаемый файл</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpPost("import/{idWell}/{options}")]
        [ProducesResponseType(typeof(ValidationProblemDetails), (int)System.Net.HttpStatusCode.BadRequest)]
        public async Task<IActionResult> ImportAsync(int idWell,
            int options,
            [Required] IFormFile file,
            CancellationToken cancellationToken)
        {
            int? idUser = User.GetUserId();
            
            if (idUser is null)
                return Forbid();
            
            if (!await CanUserEditProcessMapAsync(idWell, cancellationToken))
                return Forbid();
            
            if (Path.GetExtension(file.FileName).ToLower() != ".xlsx")
                return this.ValidationBadRequest(nameof(file), "Требуется xlsx файл.");
            
            using Stream stream = file.OpenReadStream();

            try
            {
                await processMapPlanImportService.ImportAsync(idWell,
                    idUser.Value,
                    (options & 1) > 0,
                    stream,
                    cancellationToken);
            }
            catch (FileFormatException ex)
            {
                return this.ValidationBadRequest(nameof(file), ex.Message);
            }

            return Ok();
        }

        /// <summary>
        /// Экспорт плановой РТК в excel
        /// </summary>
        /// <param name="idWell">Id скважины</param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        [HttpGet("export/{idWell}")]
        [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK, "application/octet-stream")]
        [ProducesResponseType(StatusCodes.Status204NoContent)]
        public async Task<IActionResult> ExportAsync(int idWell, CancellationToken cancellationToken)
        {
            int? idUser = User.GetUserId();

            if (idUser is null)
                return Forbid();
            
            var well = await wellService.GetOrDefaultAsync(idWell, cancellationToken);

            if (well is null)
                return NoContent();

            var stream = await processMapPlanImportService.ExportAsync(idWell, cancellationToken);
            var fileName = $"РТК-план по скважине {well.Caption} куст {well.Cluster}.xlsx";
            return File(stream, "application/octet-stream", fileName);
        }

        private async Task<bool> CanUserEditProcessMapAsync(int idWell, CancellationToken token)
        {
            var idUser = User.GetUserId();

            if (!idUser.HasValue)
                return false;
            
            var idCompany = User.GetCompanyId();
            if (!idCompany.HasValue || !await wellService.IsCompanyInvolvedInWellAsync(idCompany.Value, idWell, token))
                return false;
            
            var well = await wellService.GetOrDefaultAsync(idWell, token);

            if (well is null)
                return false;
            
            return well.IdState != 2 || userRepository.HasPermission(idUser.Value, "ProcessMap.editCompletedWell");
        }

        private async Task NotifyUsersBySignalR(int idWell, CancellationToken token)
        {
            var dtos = await service.GetAllAsync(idWell, null, token);
            _ = Task.Run(() => telemetryHubContext.Clients.Group($"well_{idWell}")
                  .SendAsync(SirnalRMethodGetDataName, dtos), CancellationToken.None);
        }
    }
}