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

namespace AsbCloudWebApi.Controllers.Subsystems
{        
    /// <summary>
    ///  Наработка подсистем
    /// </summary>
    [Route("api/[controller]")]
    [ApiController]
    [Authorize]
    public class SubsystemOperationTimeController : ControllerBase
    {
        private readonly ISubsystemOperationTimeService subsystemOperationTimeService;        
        private readonly IWellService wellService;
        private readonly ISubsystemService subsystemService;
        public SubsystemOperationTimeController(ISubsystemOperationTimeService subsystemOperationTimeService, IWellService wellService, ISubsystemService subsystemService)
        {
            this.subsystemOperationTimeService = subsystemOperationTimeService;
            this.wellService = wellService;
            this.subsystemService = subsystemService;
        }
        /// <summary>
        /// получить статистику  
        /// </summary>
        [HttpGet("stat")]
        [ProducesResponseType(typeof(IEnumerable<SubsystemStatDto>), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> GetStatAsync([FromQuery] SubsystemOperationTimeRequest request, CancellationToken token = default)
        {
            if (!await UserHasAccesToWellAsync(request.IdWell, token))
                return Forbid();
            if (!await IsValidRequest(request, token))
                return BadRequest("Запрашиваемый диапазон должен заканчиваться за 2 часа до текущего времени(после приведения к UTC).");
            var subsystemResult = await subsystemOperationTimeService.GetStatAsync(request, token);
            return Ok(subsystemResult);
        }

        /// <summary>
        /// получить список подсистем общий. 
        /// </summary>
        [HttpGet("subsystem")]
        [ProducesResponseType(typeof(IEnumerable<SubsystemDto>), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> GetSubsystemAsync([FromQuery] int? idWell, CancellationToken token = default)
        {
            if (idWell.HasValue)            
                if (!await UserHasAccesToWellAsync(idWell.Value, token))
                    return Forbid();            
            var result = await subsystemService.GetSubsystemAsync(idWell, token);                
            return Ok(result);
        }

        /// <summary>
        /// получить доступный диапазон дат наработки подсистемы. 
        /// </summary>
        [HttpGet("rangeDate")]
        [ProducesResponseType(typeof(DatesRangeDto), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> GetDateRangeOperationTimeAsync([FromQuery] SubsystemOperationTimeRequest request, CancellationToken token = default)
        {
            if (!await UserHasAccesToWellAsync(request.IdWell, token))
                return Forbid();                
            var result = await subsystemOperationTimeService.GetDateRangeOperationTimeAsync(request, token);
            return Ok(result);
        }

        /// <summary>
        /// получить список наработок подсистем 
        /// </summary>
        [HttpGet("operationTime")]
        [ProducesResponseType(typeof(IEnumerable<SubsystemOperationTimeDto>), (int)System.Net.HttpStatusCode.OK)]
        
        public async Task<IActionResult> GetOperationTimeAsync(
            [FromQuery] SubsystemOperationTimeRequest request,
            CancellationToken token = default)
        {
            if (!await UserHasAccesToWellAsync(request.IdWell, token))
                return Forbid();
            if (!await IsValidRequest(request, token))
                return BadRequest("Запрашиваемый диапазон должен заканчиваться за 2 часа до текущего времени(после приведения к UTC).");

            var result = await subsystemOperationTimeService.GetOperationTimeAsync(request, token);
            return Ok(result);
        }

        /// <summary>
        /// Удалить наработки.        
        /// </summary>
        /// <param name="request"></param>
        /// <param name="token"></param>
        /// <returns></returns>
        [HttpDelete]
        [Permission]
        [ProducesResponseType(typeof(int), (int)System.Net.HttpStatusCode.OK)]
        public async Task<IActionResult> DeleteAsync(
            [FromQuery] SubsystemOperationTimeRequest request,
            CancellationToken token)
        {
            if (!await UserHasAccesToWellAsync(request.IdWell, token))
                return Forbid();
            if (!await IsValidRequest(request, token))
                return BadRequest("Запрашиваемый диапазон должен заканчиваться за 2 часа до текущего времени(после приведения к UTC).");
            var result = await subsystemOperationTimeService.DeleteAsync(request, token);
            return Ok(result);        
        }

        protected async Task<bool> UserHasAccesToWellAsync(int idWell, CancellationToken token)
        {
            var idCompany = User.GetCompanyId();
            if (idCompany is not null &&
                await wellService.IsCompanyInvolvedInWellAsync((int)idCompany, idWell, token)
                    .ConfigureAwait(false))
                return true;
            return false;
        }
        protected async Task<bool> IsValidRequest(SubsystemOperationTimeRequest request, CancellationToken token)
        {
            var well = await wellService.GetOrDefaultAsync(request.IdWell, token);
            if (well is not null && request.LtDate.HasValue)
            {
                var ltDate = (DateTimeOffset)request.LtDate;
                var utcDateRequest = ltDate.ToRemoteDateTime(well.Timezone.Hours);
                
                if (utcDateRequest.AddHours(2) > DateTime.UtcNow)
                {
                    return false;
                }                
            }
            return true;
        }
    }
}