using AsbCloudApp.Data;
using AsbCloudApp.Services;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace AsbCloudWebApi.Controllers
{
#nullable enable
    /// <summary>
    /// Плановая траектория (загрузка и хранение)
    /// </summary>
    [Route("api/well/{idWell}/plannedTrajectory")]
    [ApiController]
    [Authorize]
    public class PlannedTrajectoryController : ControllerBase
    {
        private readonly IWellService wellService;
        private readonly IPlannedTrajectoryImportService plannedTrajectoryImportService;
        private readonly IPlannedTrajectoryService plannedTrajectoryService;

        public PlannedTrajectoryController(IWellService wellService, IPlannedTrajectoryImportService plannedTrajectoryImportService, IPlannedTrajectoryService plannedTrajectoryService)
        {
            this.plannedTrajectoryImportService = plannedTrajectoryImportService;
            this.wellService = wellService;
            this.plannedTrajectoryService = plannedTrajectoryService;
        }

        /// <summary>
        /// Возвращает шаблон для заполнения строк плановой траектории
        /// </summary>
        /// <returns>Запрашиваемый файл</returns>
        [HttpGet]
        [Route("template")]
        [AllowAnonymous]
        [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK)]
        public IActionResult GetTemplate()
        {
            var stream = plannedTrajectoryImportService.GetTemplateFile();
            var fileName = "ЕЦП_шаблон_файла_плановая_траектория.xlsx";
            return File(stream, "application/octet-stream", fileName);
        }

        /// <summary>
        /// Формируем excel файл с текущими строками плановой траектории
        /// </summary>
        /// <param name="idWell">id скважины</param>
        /// <param name="token"> Токен отмены задачи </param>
        /// <returns>Запрашиваемый файл</returns>
        [HttpGet]
        [Route("export")]
        [Permission]
        [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> ExportAsync([FromRoute] int idWell, CancellationToken token = default)
        {
            if (!await CanUserAccessToWellAsync(idWell,
                token).ConfigureAwait(false))
                return Forbid();
            var stream = await plannedTrajectoryImportService.ExportAsync(idWell, token);
            var fileName = plannedTrajectoryImportService.GetFileName(idWell, token);
            return File(stream, "application/octet-stream", fileName);
        }

        /// <summary>
        /// Импортирует координаты из excel (xlsx) файла
        /// </summary>
        /// <param name="idWell">id скважины</param>
        /// <param name="files">Коллекция из одного файла xlsx</param>
        /// <param name="options">Удалить операции перед импортом = 1, если фал валидный</param>
        /// <param name="token"> Токен отмены задачи </param>
        /// <returns></returns>
        [HttpPost]
        [Permission]
        [Route("import/{options}")]
        public async Task<IActionResult> ImportAsync(int idWell,
            [FromForm] IFormFileCollection files,
            int options = 0,
            CancellationToken token = default)
        {
            int? idCompany = User.GetCompanyId();
            int? idUser = User.GetUserId();
            if (!idUser.HasValue)
                return Forbid();
            if (idCompany is null || idUser is null)
                return Forbid();

            if (!await wellService.IsCompanyInvolvedInWellAsync((int)idCompany,
                idWell, token).ConfigureAwait(false))
                return Forbid();

            if (files.Count < 1)
                return BadRequest("нет файла");

            var file = files[0];
            if (Path.GetExtension(file.FileName).ToLower() != ".xlsx")
                return BadRequest("Требуется xlsx файл.");
            using Stream stream = file.OpenReadStream();

            try
            {
               var result = plannedTrajectoryImportService.ImportAsync(idWell, idUser.Value, stream, token,(options & 1) > 0);
               return Ok(result);
            }
            catch (FileFormatException ex)
            {
                return BadRequest(ex.Message);
            }            
        }

        /// <summary>
        /// Получаем список всех строк координат плановой траектории (для клиента)
        /// </summary>
        /// <param name="idWell">id скважины</param>
        /// <param name="token"> Токен отмены задачи </param>
        /// <returns>Запрашиваемый файл</returns>
        [HttpGet]
        [Route("allRows")]
        [Permission]
        [ProducesResponseType(typeof(IEnumerable<PlannedTrajectoryDto>), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> GetRows([FromRoute] int idWell, CancellationToken token = default)
        {
            int? idCompany = User.GetCompanyId();

            if (idCompany is null)
                return Forbid();

            if (!await wellService.IsCompanyInvolvedInWellAsync((int)idCompany,
                idWell, token).ConfigureAwait(false))
                return Forbid();

            var result = plannedTrajectoryService.GetOrDefaultAsync(idWell,token);
            return Ok(result);
        }

        /// <summary>
        /// Добавить одну новую строчку координат для плановой траектории
        /// </summary>
        /// <param name="idWell"></param>
        /// <param name="row"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpPost]
        [Permission]
        [ProducesResponseType(typeof(PlannedTrajectoryDto), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> AddRowAsync(int idWell, [FromBody] PlannedTrajectoryDto row,
            CancellationToken token = default)
        {
            if (!await CanUserAccessToWellAsync(idWell, token).ConfigureAwait(false))
                return Forbid();
            int? idUser = User.GetUserId();
            if (!idUser.HasValue)
                return Forbid();
            var result = await plannedTrajectoryService.AddAsync(idWell, idUser.Value, row, token)
                    .ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Добавить массив строчек координат для плановой траектории
        /// </summary>
        /// <param name="idWell"></param>
        /// <param name="rows"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpPost]
        [Permission]
        [ProducesResponseType(typeof(PlannedTrajectoryDto), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> AddRowAsync(int idWell, [FromBody] IEnumerable<PlannedTrajectoryDto> rows,
            CancellationToken token = default)
        {
            if (!await CanUserAccessToWellAsync(idWell, token).ConfigureAwait(false))
                return Forbid();
            int? idUser = User.GetUserId();
            if (!idUser.HasValue)
                return Forbid();
            var result = await plannedTrajectoryService.AddRangeAsync(idWell, idUser.Value, rows, token)
                    .ConfigureAwait(false);
            return Ok(result);
        }

        /// <summary>
        /// Изменить выбранную строку с координатами
        /// </summary>
        /// <param name="idWell"></param>
        /// <param name="idRow"></param>
        /// <param name="row"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpPut("{idRow}")]
        [Permission]
        [ProducesResponseType(typeof(PlannedTrajectoryDto), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> UpdateRowAsync(int idWell, int idRow,
            [FromBody] PlannedTrajectoryDto row, CancellationToken token = default)
        {            
            if (!await CanUserAccessToWellAsync(idWell, token).ConfigureAwait(false))
                return Forbid();
            int? idUser = User.GetUserId();
            if (!idUser.HasValue)
                return Forbid();
            var result = await plannedTrajectoryService.UpdateAsync(idWell, idUser.Value, idRow, row, token)
                    .ConfigureAwait(false);
            return Ok(result);            
        }

        /// <summary>
        /// Удалить выбранную строку с координатами
        /// </summary>
        /// <param name="idWell"></param>
        /// <param name="idRow"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpDelete("{idOperation}")]
        [Permission]
        [ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> DeleteRowAsync(int idWell, int idRow, CancellationToken token = default)
        {
            if (!await CanUserAccessToWellAsync(idWell,
                token).ConfigureAwait(false))
                return Forbid();

            var result = await plannedTrajectoryService.DeleteRangeAsync(new int[] { idRow }, token)
                .ConfigureAwait(false);

            return Ok(result);
        }

        private async Task<bool> CanUserAccessToWellAsync(int idWell, CancellationToken token = default)
        {
            int? idCompany = User.GetCompanyId();
            return idCompany is not null && await wellService.IsCompanyInvolvedInWellAsync((int)idCompany,
                idWell, token).ConfigureAwait(false);
        }

    }
}