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NewsController.cs

using Microsoft.AspNetCore.Mvc;
using Nop.Core.Domain.News;
using Nop.Core.Events;
using Nop.Services.Localization;
using Nop.Services.Logging;
using Nop.Services.Messages;
using Nop.Services.News;
using Nop.Services.Security;
using Nop.Services.Seo;
using Nop.Services.Stores;
using Nop.Web.Areas.Admin.Factories;
using Nop.Web.Areas.Admin.Infrastructure.Mapper.Extensions;
using Nop.Web.Areas.Admin.Models.News;
using Nop.Web.Framework.Mvc;
using Nop.Web.Framework.Mvc.Filters;

namespace Nop.Web.Areas.Admin.Controllers;

public partial class NewsController : BaseAdminController
{
    #region Fields

    protected readonly ICustomerActivityService _customerActivityService;
    protected readonly IEventPublisher _eventPublisher;
    protected readonly ILocalizationService _localizationService;
    protected readonly INewsModelFactory _newsModelFactory;
    protected readonly INewsService _newsService;
    protected readonly INotificationService _notificationService;
    protected readonly IPermissionService _permissionService;
    protected readonly IStoreMappingService _storeMappingService;
    protected readonly IStoreService _storeService;
    protected readonly IUrlRecordService _urlRecordService;

    #endregion

    #region Ctor

    public NewsController(ICustomerActivityService customerActivityService,
        IEventPublisher eventPublisher,
        ILocalizationService localizationService,
        INewsModelFactory newsModelFactory,
        INewsService newsService,
        INotificationService notificationService,
        IPermissionService permissionService,
        IStoreMappingService storeMappingService,
        IStoreService storeService,
        IUrlRecordService urlRecordService)
    {
        _customerActivityService = customerActivityService;
        _eventPublisher = eventPublisher;
        _localizationService = localizationService;
        _newsModelFactory = newsModelFactory;
        _newsService = newsService;
        _notificationService = notificationService;
        _permissionService = permissionService;
        _storeMappingService = storeMappingService;
        _storeService = storeService;
        _urlRecordService = urlRecordService;
    }

    #endregion

    #region Utilities

    protected virtual async Task SaveStoreMappingsAsync(NewsItem newsItem, NewsItemModel model)
    {
        newsItem.LimitedToStores = model.SelectedStoreIds.Any();
        await _newsService.UpdateNewsAsync(newsItem);

        var existingStoreMappings = await _storeMappingService.GetStoreMappingsAsync(newsItem);
        var allStores = await _storeService.GetAllStoresAsync();
        foreach (var store in allStores)
        {
            if (model.SelectedStoreIds.Contains(store.Id))
            {
                //new store
                if (!existingStoreMappings.Any(sm => sm.StoreId == store.Id))
                    await _storeMappingService.InsertStoreMappingAsync(newsItem, store.Id);
            }
            else
            {
                //remove store
                var storeMappingToDelete = existingStoreMappings.FirstOrDefault(sm => sm.StoreId == store.Id);
                if (storeMappingToDelete != null)
                    await _storeMappingService.DeleteStoreMappingAsync(storeMappingToDelete);
            }
        }
    }

    #endregion

    #region Methods        

    #region News items

    public virtual IActionResult Index()
    {
        return RedirectToAction("NewsItems");
    }

    public virtual async Task NewsItems(int? filterByNewsItemId)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //prepare model
        var model = await _newsModelFactory.PrepareNewsContentModelAsync(new NewsContentModel(), filterByNewsItemId);

        return View(model);
    }

    [HttpPost]
    public virtual async Task List(NewsItemSearchModel searchModel)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        //prepare model
        var model = await _newsModelFactory.PrepareNewsItemListModelAsync(searchModel);

        return Json(model);
    }

    public virtual async Task NewsItemCreate()
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //prepare model
        var model = await _newsModelFactory.PrepareNewsItemModelAsync(new NewsItemModel(), null);

        return View(model);
    }

    [HttpPost, ParameterBasedOnFormName("save-continue", "continueEditing")]
    public virtual async Task NewsItemCreate(NewsItemModel model, bool continueEditing)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        if (ModelState.IsValid)
        {
            var newsItem = model.ToEntity();
            newsItem.CreatedOnUtc = DateTime.UtcNow;
            await _newsService.InsertNewsAsync(newsItem);

            //activity log
            await _customerActivityService.InsertActivityAsync("AddNewNews",
                string.Format(await _localizationService.GetResourceAsync("ActivityLog.AddNewNews"), newsItem.Id), newsItem);

            //search engine name
            var seName = await _urlRecordService.ValidateSeNameAsync(newsItem, model.SeName, model.Title, true);
            await _urlRecordService.SaveSlugAsync(newsItem, seName, newsItem.LanguageId);

            //Stores
            await SaveStoreMappingsAsync(newsItem, model);

            _notificationService.SuccessNotification(await _localizationService.GetResourceAsync("Admin.ContentManagement.News.NewsItems.Added"));

            if (!continueEditing)
                return RedirectToAction("NewsItems");

            return RedirectToAction("NewsItemEdit", new { id = newsItem.Id });
        }

        //prepare model
        model = await _newsModelFactory.PrepareNewsItemModelAsync(model, null, true);

        //if we got this far, something failed, redisplay form
        return View(model);
    }

    public virtual async Task NewsItemEdit(int id)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //try to get a news item with the specified id
        var newsItem = await _newsService.GetNewsByIdAsync(id);
        if (newsItem == null)
            return RedirectToAction("NewsItems");

        //prepare model
        var model = await _newsModelFactory.PrepareNewsItemModelAsync(null, newsItem);

        return View(model);
    }

    [HttpPost, ParameterBasedOnFormName("save-continue", "continueEditing")]
    public virtual async Task NewsItemEdit(NewsItemModel model, bool continueEditing)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //try to get a news item with the specified id
        var newsItem = await _newsService.GetNewsByIdAsync(model.Id);
        if (newsItem == null)
            return RedirectToAction("NewsItems");

        if (ModelState.IsValid)
        {
            newsItem = model.ToEntity(newsItem);
            await _newsService.UpdateNewsAsync(newsItem);

            //activity log
            await _customerActivityService.InsertActivityAsync("EditNews",
                string.Format(await _localizationService.GetResourceAsync("ActivityLog.EditNews"), newsItem.Id), newsItem);

            //search engine name
            var seName = await _urlRecordService.ValidateSeNameAsync(newsItem, model.SeName, model.Title, true);
            await _urlRecordService.SaveSlugAsync(newsItem, seName, newsItem.LanguageId);

            //stores
            await SaveStoreMappingsAsync(newsItem, model);

            _notificationService.SuccessNotification(await _localizationService.GetResourceAsync("Admin.ContentManagement.News.NewsItems.Updated"));

            if (!continueEditing)
                return RedirectToAction("NewsItems");

            return RedirectToAction("NewsItemEdit", new { id = newsItem.Id });
        }

        //prepare model
        model = await _newsModelFactory.PrepareNewsItemModelAsync(model, newsItem, true);

        //if we got this far, something failed, redisplay form
        return View(model);
    }

    [HttpPost]
    public virtual async Task Delete(int id)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //try to get a news item with the specified id
        var newsItem = await _newsService.GetNewsByIdAsync(id);
        if (newsItem == null)
            return RedirectToAction("NewsItems");

        await _newsService.DeleteNewsAsync(newsItem);

        //activity log
        await _customerActivityService.InsertActivityAsync("DeleteNews",
            string.Format(await _localizationService.GetResourceAsync("ActivityLog.DeleteNews"), newsItem.Id), newsItem);

        _notificationService.SuccessNotification(await _localizationService.GetResourceAsync("Admin.ContentManagement.News.NewsItems.Deleted"));

        return RedirectToAction("NewsItems");
    }

    #endregion

    #region Comments

    public virtual async Task NewsComments(int? filterByNewsItemId)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return AccessDeniedView();

        //try to get a news item with the specified id
        var newsItem = await _newsService.GetNewsByIdAsync(filterByNewsItemId ?? 0);
        if (newsItem == null && filterByNewsItemId.HasValue)
            return RedirectToAction("NewsComments");

        //prepare model
        var model = await _newsModelFactory.PrepareNewsCommentSearchModelAsync(new NewsCommentSearchModel(), newsItem);

        return View(model);
    }

    [HttpPost]
    public virtual async Task Comments(NewsCommentSearchModel searchModel)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        //prepare model
        var model = await _newsModelFactory.PrepareNewsCommentListModelAsync(searchModel, searchModel.NewsItemId);

        return Json(model);
    }

    [HttpPost]
    public virtual async Task CommentUpdate(NewsCommentModel model)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        //try to get a news comment with the specified id
        var comment = await _newsService.GetNewsCommentByIdAsync(model.Id)
            ?? throw new ArgumentException("No comment found with the specified id");

        var previousIsApproved = comment.IsApproved;

        //fill entity from model
        comment = model.ToEntity(comment);

        await _newsService.UpdateNewsCommentAsync(comment);

        //activity log
        await _customerActivityService.InsertActivityAsync("EditNewsComment",
            string.Format(await _localizationService.GetResourceAsync("ActivityLog.EditNewsComment"), comment.Id), comment);

        //raise event (only if it wasn't approved before and is approved now)
        if (!previousIsApproved && comment.IsApproved)
            await _eventPublisher.PublishAsync(new NewsCommentApprovedEvent(comment));

        return new NullJsonResult();
    }

    [HttpPost]
    public virtual async Task CommentDelete(int id)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        //try to get a news comment with the specified id
        var comment = await _newsService.GetNewsCommentByIdAsync(id)
            ?? throw new ArgumentException("No comment found with the specified id", nameof(id));

        await _newsService.DeleteNewsCommentAsync(comment);

        //activity log
        await _customerActivityService.InsertActivityAsync("DeleteNewsComment",
            string.Format(await _localizationService.GetResourceAsync("ActivityLog.DeleteNewsComment"), comment.Id), comment);

        return new NullJsonResult();
    }

    [HttpPost]
    public virtual async Task DeleteSelectedComments(ICollection selectedIds)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        if (selectedIds == null || !selectedIds.Any())
            return NoContent();

        var comments = await _newsService.GetNewsCommentsByIdsAsync(selectedIds.ToArray());

        await _newsService.DeleteNewsCommentsAsync(comments);

        //activity log
        foreach (var newsComment in comments)
        {
            await _customerActivityService.InsertActivityAsync("DeleteNewsComment",
                string.Format(await _localizationService.GetResourceAsync("ActivityLog.DeleteNewsComment"), newsComment.Id), newsComment);
        }

        return Json(new { Result = true });
    }

    [HttpPost]
    public virtual async Task ApproveSelected(ICollection selectedIds)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        if (selectedIds == null || !selectedIds.Any())
            return NoContent();

        //filter not approved comments
        var newsComments = (await _newsService.GetNewsCommentsByIdsAsync(selectedIds.ToArray())).Where(comment => !comment.IsApproved);

        foreach (var newsComment in newsComments)
        {
            newsComment.IsApproved = true;

            await _newsService.UpdateNewsCommentAsync(newsComment);

            //raise event 
            await _eventPublisher.PublishAsync(new NewsCommentApprovedEvent(newsComment));

            //activity log
            await _customerActivityService.InsertActivityAsync("EditNewsComment",
                string.Format(await _localizationService.GetResourceAsync("ActivityLog.EditNewsComment"), newsComment.Id), newsComment);
        }

        return Json(new { Result = true });
    }

    [HttpPost]
    public virtual async Task DisapproveSelected(ICollection selectedIds)
    {
        if (!await _permissionService.AuthorizeAsync(StandardPermissionProvider.ManageNews))
            return await AccessDeniedDataTablesJson();

        if (selectedIds == null || !selectedIds.Any())
            return NoContent();

        //filter approved comments
        var newsComments = (await _newsService.GetNewsCommentsByIdsAsync(selectedIds.ToArray())).Where(comment => comment.IsApproved);

        foreach (var newsComment in newsComments)
        {
            newsComment.IsApproved = false;

            await _newsService.UpdateNewsCommentAsync(newsComment);

            //activity log
            await _customerActivityService.InsertActivityAsync("EditNewsComment",
                string.Format(await _localizationService.GetResourceAsync("ActivityLog.EditNewsComment"), newsComment.Id), newsComment);
        }

        return Json(new { Result = true });
    }

    #endregion

    #endregion
}