src/ZKEACMS.Article/Service/ArticleTypeWidgetService.cs

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/* http://www.zkea.net/ 
 * Copyright (c) ZKEASOFT. All rights reserved. 
 * http://www.zkea.net/licenses */

using System;
using Easy;
using Easy.Extend;
using Microsoft.AspNetCore.Http;
using Microsoft.EntityFrameworkCore;
using ZKEACMS.Article.Models;
using ZKEACMS.Article.ViewModel;
using ZKEACMS.Widget;
using Microsoft.AspNetCore.Mvc;
using System.Linq;
using System.Collections.Concurrent;
using Easy.Cache;

namespace ZKEACMS.Article.Service
{
    public class ArticleTypeWidgetService : WidgetService<ArticleTypeWidget>
    {
        private const string ArticleTypeWidgetRelatedPageUrls = "ArticleTypeWidgetRelatedPageUrls";
        private readonly ConcurrentDictionary<string, object> _allRelatedUrlCache;
        private readonly IArticleTypeService _articleTypeService;
        public ArticleTypeWidgetService(IWidgetBasePartService widgetService,
            IArticleTypeService articleTypeService,
            IApplicationContext applicationContext,
            ICacheManager<ConcurrentDictionary<string, object>> cacheManager,
            CMSDbContext dbContext)
            : base(widgetService, applicationContext, dbContext)
        {
            _articleTypeService = articleTypeService;
            _allRelatedUrlCache = cacheManager.GetOrAdd(ArticleTypeWidgetRelatedPageUrls, new ConcurrentDictionary<string, object>());
        }
        private void DismissRelatedPageUrls()
        {
            _allRelatedUrlCache.TryRemove(ArticleTypeWidgetRelatedPageUrls, out var urls);
        }
        public override void AddWidget(WidgetBase widget)
        {
            base.AddWidget(widget);
            DismissRelatedPageUrls();
        }

        public override void DeleteWidget(string widgetId)
        {
            base.DeleteWidget(widgetId);
            DismissRelatedPageUrls();
        }

        public override object Display(WidgetDisplayContext widgetDisplayContext)
        {
            ArticleTypeWidget currentWidget = widgetDisplayContext.Widget as ArticleTypeWidget;
            var types = _articleTypeService.Get(m => m.ParentID == currentWidget.ArticleTypeID);
            var actionContext = widgetDisplayContext.ActionContext;
            int ac = actionContext.RouteData.GetCategory();
            ArticleType articleType = null;
            if (ac > 0)
            {
                articleType = _articleTypeService.Get(ac);