using AutoMapper;
using gehGassi.Core.Interfaces;
using gehGassi.Core.Services;
using gehGassi.Permissions;
using gehGassi.Web.Auth.Attributes;
using gehGassi.Web.Auth;
using gehGassi.Web.Hubs;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Localization;
using gehGassi.Common.Data;
using gehGassi.Domain.Common;
using System.Collections.Generic;
using System.Linq;
using gehGassi.Web.Helper;
using gehGassi.Web.Models;
using System.Threading.Tasks;
using System;
using gehGassi.Web.Services;
using System.IO;

namespace gehGassi.Web.Controllers
{
    /// <summary>
    /// Controller für die Verwaltung von Feedback
    /// </summary>
    [Authorize]
    public class FeedbackController : BaseController
    {
        private readonly IMapper _mapper;
        private readonly IStringLocalizer<FeedbackController> _localizer;
        private readonly ILanguageService _languageService;
        private readonly IAppFeedbackService _appFeedbackService;

        /// <summary>
        /// Erstellt eine Instanz
        /// </summary>
        /// <param name="mapper">Instanz eines IMapper</param>
        /// <param name="localizer">Instanz eines IStringLocalizer</param>
        /// <param name="languageService">Instanz eines ILanguageService</param>
        /// <param name="appFeedbackService">Instanz eines IAppFeedbackService</param>
        public FeedbackController(IMapper mapper, IStringLocalizer<FeedbackController> localizer, ILanguageService languageService, IAppFeedbackService appFeedbackService)
        {
            _mapper = mapper;
            _localizer = localizer;
            _languageService = languageService;
            _appFeedbackService = appFeedbackService;
        }

        /// <summary>
        /// Gibt einen View für die Verwaltung von App-Feedback zurück
        /// </summary>
        /// <returns>View</returns>
        [Authorize(Policy = Policies.PowerUserOnly)]
        [HasPermission(Permission.SettingsManage, Permission.SettingsFeedback)]
        public IActionResult Index()
        {
            return View();
        }

        /// <summary>
        /// Gibt eine Liste von Entitäten basierend auf Abfragekriterien zurück
        /// </summary>
        /// <param name="dm">Abfragekriterien</param>
        /// <returns>Liste von gefundenen Entitäten</returns>
        [Authorize(Policy = Policies.PowerUserOnly)]
        [HasPermission(Permission.SettingsManage, Permission.SettingsFeedback)]
        [HttpPost]
        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public IActionResult GetFeedbacks([FromBody] DataManager dm)
        {
            if (dm != null)
            {
                var propList = new List<ComplexProperty>();
                dm.SetComplexProperties(propList);

                if (dm.Where != null)
                {
                    foreach (var whereFilter in dm.Where)
                    {
                        if (whereFilter.predicates == null)
                            continue;
                        foreach (var whereFilterPredicate in whereFilter.predicates)
                        {
                            if (whereFilterPredicate.Field == "feedbackType")
                                whereFilterPredicate.value = (AppFeedbackType)((int)((long)whereFilterPredicate.value));
                            if (whereFilterPredicate.Field == "status")
                                whereFilterPredicate.value = (AppFeedbackStatus)((int)((long)whereFilterPredicate.value));
                        }
                    }
                }
            }

            var resultList = _appFeedbackService.Filter(dm?.SearchValue ?? "");

            //Sortierung
            resultList = dm.ApplySorting(resultList);
            //Filter
            resultList = dm.ApplyFiltering(resultList, out var countFiltered);
            //Paging
            resultList = dm.ApplyPaging(resultList);

            var resultListVm = resultList.ToList().Select(item => _mapper.Map<AppFeedbackListVm>(item)).ToList();

            foreach (var itemVm in resultListVm)
            {
                itemVm.FeedbackTypeText = itemVm.FeedbackType.GetDisplayName(AnnotationsLocalizer);
                itemVm.StatusText = itemVm.Status.GetDisplayName(AnnotationsLocalizer);
                itemVm.AppModeText = itemVm.AppMode.GetDisplayName(AnnotationsLocalizer);
            }

            //FilterPreview?
            if (!dm.RequiresCounts)
                return Json(resultListVm);

            return Json(new { result = resultListVm, count = countFiltered });
        }

        /// <summary>
        /// Details eines Feedbacks
        /// </summary>
        /// <param name="id">Id des Feedbacks</param>
        /// <returns>PartialView</returns>
        [Authorize(Policy = Policies.PowerUserOnly)]
        [HasPermission(Permission.SettingsManage, Permission.SettingsFeedback)]
        [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
        public async Task<IActionResult> Details(long id)
        {
            var item = await _appFeedbackService.GetAsync(id);
            if (item != null)
            {
                var model = _mapper.Map<AppFeedbackVm>(item);

                return PartialView("_Details", model);
            }
            return PartialView("_Error");
        }

        /// <summary>
        /// Details eines Feedbacks
        /// </summary>
        /// <param name="model">Model</param>
        /// <returns>Json</returns>
        [Authorize(Policy = Policies.PowerUserOnly)]
        [HasPermission(Permission.SettingsManage, Permission.SettingsFeedback)]
        [ValidateAntiForgeryToken]
        [HttpPost]
        public async Task<IActionResult> Details(AppFeedbackVm model)
        {
            var result = new ResponseVm { Success = false };

            if (ModelState.IsValid)
            {
                var item = await _appFeedbackService.GetAsync(model.Id);
                item.Status = (AppFeedbackStatus)model.Status;
                await _appFeedbackService.CommitAsync(User.Identity.Name);

                result.Data = item.ToCamelCaseJson();
                result.Success = true;
                result.Html = string.Empty;
                return Json(new { result.Success, result.Html, result.Data });
            }

            result.Html = await PartialView("_Details", model).ToStringAsync(ControllerContext);
            return Json(result);
        }

        /// <summary>
        /// Löschen von Feedback
        /// </summary>
        /// <param name="ids">Liste Id der Entität</param>
        /// <returns>Json</returns>
        [Authorize(Policy = Policies.PowerUserOnly)]
        [HasPermission(Permission.SettingsManage, Permission.SettingsFeedback)]
        [HttpPost]
        public async Task<IActionResult> Delete(List<long> ids)
        {
            var batchErrorHeader = $"<p><strong>{_localizer["Common_BatchDelete_Failed"].Value}</strong></p>";
            var batchResult = new BatchResponseVm(batchErrorHeader) { Success = true };

            foreach (var id in ids)
            {
                var item = await _appFeedbackService.GetAsync(id);
                if (item != null)
                {
                    var usedCount = 0;

                    if (usedCount == 0)
                    {
                        //TODO: Gibt es Resets die notwendig sind?
                        //await _productService.ResetAdvertisementCategoryAsync(item.Id, true);

                        batchResult.BatchResponseList.Add(new BatchResponseItemVm() { Id = item.Id.ToString(), Name = item.Name, Success = true, NotFound = false, ErrorMessage = "" });
                        _appFeedbackService.Remove(item);
                    }
                    else
                    {
                        if (usedCount != 0)
                        {
                            batchResult.Success = false;
                            batchResult.BatchResponseList.Add(new BatchResponseItemVm() { Id = id.ToString(), Name = item.Name, Success = false, NotFound = false, ErrorMessage = string.Format(_localizer["Common_BatchDelete_InUse"], $"<strong>{item.Name}</strong>", $"<strong>{usedCount}</strong>") + "<br/>" });
                        }
                    }
                }
                else
                {
                    batchResult.Success = false;
                    batchResult.BatchResponseList.Add(new BatchResponseItemVm() { Id = id.ToString(), Name = "", Success = false, NotFound = true, ErrorMessage = string.Format(_localizer["Common_BatchDelete_NotFound"], $"<strong>{id}</strong>") + "<br/>" });
                }
            }
            if (batchResult.BatchResponseList.Any(c => c.Success))
                await _appFeedbackService.CommitAsync(User.Identity.Name);
            return Json(batchResult);
        }
    }
}