src/NetCoreBBS/Controllers/TopicController.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using NetCoreBBS.Infrastructure;
using NetCoreBBS.Entities;
using NetCoreBBS.Interfaces;
using NetCoreBBS.ViewModels;

// For more information on enabling MVC for empty projects, visit http://go.microsoft.com/fwlink/?LinkID=397860

namespace NetCoreBBS.Controllers
{
    public class TopicController : Controller
    {
        private ITopicRepository _topic;
        private IRepository<TopicNode> _node;
        private ITopicReplyRepository _reply;
        public TopicController(ITopicRepository topic, IRepository<TopicNode> node, ITopicReplyRepository reply)
        {
            _topic = topic;
            _node = node;
            _reply = reply;
        }
        // GET: /Topic/1
        [Route("/Topic/{id}")]
        public IActionResult Index(int id)
        {
            if (id <= 0) return Redirect("/");
            var topic = _topic.GetById(id);
            if (topic == null) return Redirect("/");
            var replys = _reply.List(r => r.TopicId == id).ToList();
            topic.ViewCount += 1;
            _topic.Edit(topic);
            ViewBag.Replys = replys;
            return View(topic);
        }
        [HttpPost]
        [ValidateAntiForgeryToken]
        [Route("/Topic/{id}")]
        public IActionResult Index([Bind("TopicId,ReplyUserId,ReplyEmail,ReplyContent")]TopicReply reply)
        {
            if (ModelState.IsValid&&!string.IsNullOrEmpty(reply.ReplyContent))
            {
                reply.CreateOn = DateTime.Now;
                _reply.Add(reply);
                var topic = _topic.GetById(reply.TopicId);
                topic.LastReplyUserId = reply.ReplyUserId;
                topic.LastReplyTime = reply.CreateOn;
                topic.ReplyCount += 1;
                _topic.Edit(topic);
            }
            return RedirectToAction("Index", "Topic", new { Id = reply.TopicId });
        }

        [Route("/Topic/Node/{name}")]
        public IActionResult Node(string name)
        {
            if (string.IsNullOrEmpty(name)) return Redirect("/");