using System;
using System.Threading.Tasks;
using AutoMapper;
using gehGassi.Core.Interfaces;
using gehGassi.Domain.Common;
using gehGassi.Permissions;
using gehGassi.Web.Auth.Attributes;
using gehGassi.Web.Helper;
using gehGassi.Web.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Localization;

namespace gehGassi.Web.Controllers
{
    /// <summary>
    /// Controller für die Anzeige von Statistiken
    /// </summary>
    [Authorize]
    public class StatisticController : BaseController
    {
        private readonly IMapper _mapper;
        private readonly IStringLocalizer<StatisticController> _localizer;
        private readonly IStatisticService _statisticService;
        private readonly IUserService _userService;

        /// <summary>
        /// Erstellt eine Instanz
        /// </summary>
        /// <param name="mapper">Instanz eines IMapper</param>
        /// <param name="localizer">Instanz eines IStringLocalizer</param>
        /// <param name="statisticService">Instanz eines IStatisticService</param>
        /// <param name="userService"></param>
        public StatisticController(IMapper mapper, IStringLocalizer<StatisticController> localizer, IStatisticService statisticService, IUserService userService)
        {
            _mapper = mapper;
            _localizer = localizer;
            _statisticService = statisticService;
            _userService = userService;
        }

        /// <summary>
        /// Anzeigen der Statistiken für Walks an einem Tag
        /// </summary>
        /// <returns>View</returns>
        [HasPermission(Permission.StatisticsManage)]
        public async Task<IActionResult> WalksPerDay()
        {
            await Task.Delay(1);

            var dateRangeVm = new StatisticDateRangeVm()
            {
                Start = DateTimeOffset.Now,
                End = null, 
                CountryIso = string.Empty
            };

            return View(dateRangeVm);
        }

        /// <summary>
        /// Abrufen der Statistiken der Walks für einen Tag
        /// </summary>
        /// <param name="model">StatisticDateRangeVm</param>
        /// <returns>JSON</returns>
        [HttpPost]
        [HasPermission(Permission.StatisticsManage)]
        public async Task<IActionResult> GetWalksPerDay([FromBody] StatisticDateRangeVm model)
        {
            var result = new StatisticWalkVm();

            var user = await _userService.GetByUsernameAsync(User.Identity.Name);

            var startDate = new DateTime(model.Start.Value.Year, model.Start.Value.Month, model.Start.Value.Day, 0, 0, 0, DateTimeKind.Local);
            var startDateUtc = startDate.ToUniversalTime();

            var start = new DateTimeOffset(startDateUtc.Year, startDateUtc.Month, startDateUtc.Day, startDateUtc.Hour,startDateUtc.Minute,startDateUtc.Second, TimeSpan.Zero);
            var end = start.AddDays(1);

            result.Total = await _statisticService.CountWalksAsync(PaymentStatus.Pending, null, start, end, model.CountryIso);
            result.ToPay = await _statisticService.CountWalkByStatusAsync(WalkStatus.Accepted, PaymentStatus.Pending, PaymentStatus.Pending, start, end, model.CountryIso);
            result.Running = await _statisticService.CountWalkByStatusAsync(WalkStatus.Started ,PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.Completed = await _statisticService.CountWalkByStatusAsync(WalkStatus.Completed, PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.NotCompleted = await _statisticService.CountWalkByStatusAsync(WalkStatus.Accepted, PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.Confirmed = await _statisticService.CountWalkByStatusAsync(WalkStatus.Confirmed, PaymentStatus.Paid, PaymentStatus.Paid, start, end, model.CountryIso);
            result.Complained = await _statisticService.CountWalkByStatusAsync(WalkStatus.Complained, null, null, start, end, model.CountryIso);
            result.ComplainResolved = await _statisticService.CountWalkByStatusAsync(WalkStatus.ComplainResolved, null, null, start, end, model.CountryIso);

            return Json(result);
        }

        /// <summary>
        /// Anzeigen der Statistiken für Walks in einem Zeitraum
        /// </summary>
        /// <returns>View</returns>
        [HasPermission(Permission.StatisticsManage)]
        public async Task<IActionResult> WalksPerTimeange()
        {
            await Task.Delay(1);

            var dateRangeVm = new StatisticDateRangeVm()
            {
                Start = DateTimeOffset.Now,
                End = DateTimeOffset.Now.AddDays(1),
                CountryIso = string.Empty
            };

            return View(dateRangeVm);
        }

        /// <summary>
        /// Abrufen der Statistiken der Walks für einen Zeitraum
        /// </summary>
        /// <param name="model">StatisticDateRangeVm</param>
        /// <returns>JSON</returns>
        [HttpPost]
        [HasPermission(Permission.StatisticsManage)]
        public async Task<IActionResult> GetWalksPerTimeRange([FromBody] StatisticDateRangeVm model)
        {
            var result = new StatisticWalkVm();

            var user = await _userService.GetByUsernameAsync(User.Identity.Name);

            var startDate = new DateTime(model.Start.Value.Year, model.Start.Value.Month, model.Start.Value.Day, 0, 0, 0, DateTimeKind.Local);
            var startDateUtc = startDate.ToUniversalTime();
            var start = new DateTimeOffset(startDateUtc.Year, startDateUtc.Month, startDateUtc.Day, startDateUtc.Hour, startDateUtc.Minute, startDateUtc.Second, TimeSpan.Zero);

            var endDate = new DateTime(model.End.Value.Year, model.End.Value.Month, model.End.Value.Day, 0, 0, 0, DateTimeKind.Local);
            var endDateUtc = endDate.ToUniversalTime();
            var end = new DateTimeOffset(endDateUtc.Year, endDateUtc.Month, endDateUtc.Day, endDateUtc.Hour, endDateUtc.Minute, endDateUtc.Second, TimeSpan.Zero);

            result.Total = await _statisticService.CountWalksAsync(PaymentStatus.Pending, null, start, end, model.CountryIso);
            result.ToPay = await _statisticService.CountWalkByStatusAsync(WalkStatus.Accepted, PaymentStatus.Pending, PaymentStatus.Pending, start, end, model.CountryIso);
            result.Running = await _statisticService.CountWalkByStatusAsync(WalkStatus.Started, PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.Completed = await _statisticService.CountWalkByStatusAsync(WalkStatus.Completed, PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.NotCompleted = await _statisticService.CountWalkByStatusAsync(WalkStatus.Accepted, PaymentStatus.Authorized, null, start, end, model.CountryIso);
            result.Confirmed = await _statisticService.CountWalkByStatusAsync(WalkStatus.Confirmed, PaymentStatus.Paid, PaymentStatus.Paid, start, end, model.CountryIso);
            result.Complained = await _statisticService.CountWalkByStatusAsync(WalkStatus.Complained, null, null, start, end, model.CountryIso);
            result.ComplainResolved = await _statisticService.CountWalkByStatusAsync(WalkStatus.ComplainResolved, null, null, start, end, model.CountryIso);

            return Json(result);
        }
    }
}