Asp.NETPersonnalBlogSystem/BLL/CommentService.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using Asp.NETPersonnalBlogSystem.DAL;
using Asp.NETPersonnalBlogSystem.Models;

namespace Asp.NETPersonnalBlogSystem.BLL
{
    /// <summary>
    /// 评论业务逻辑类
    /// 处理评论相关的业务操作
    /// </summary>
    public class CommentService
    {
        /// <summary>
        /// 获取文章的评论列表
        /// </summary>
        /// <param name="articleId">文章ID</param>
        /// <returns>评论列表</returns>
        public List<Comment> GetCommentsByArticle(int articleId)
        {
            using (var db = new BlogDbContext())
            {
                return db.Comments.Include("User")
                    .Where(c => c.ArticleId == articleId && c.Status == 1)
                    .OrderBy(c => c.CreateTime)
                    .ToList();
            }
        }

        /// <summary>
        /// 获取所有评论列表（分页）
        /// </summary>
        /// <param name="pageIndex">页码</param>
        /// <param name="pageSize">每页数量</param>
        /// <param name="status">评论状态（-1表示所有状态）</param>
        /// <returns>评论列表</returns>
        public List<Comment> GetCommentList(int pageIndex, int pageSize, int status = -1)
        {
            using (var db = new BlogDbContext())
            {
                var query = db.Comments.Include("Article").Include("User").AsQueryable();

                if (status >= 0)
                {
                    query = query.Where(c => c.Status == status);
                }

                return query.OrderByDescending(c => c.CreateTime)
                    .Skip((pageIndex - 1) * pageSize)
                    .Take(pageSize)
                    .ToList();
            }
        }

        /// <summary>
        /// 获取评论总数
        /// </summary>
        /// <param name="status">评论状态（-1表示所有状态）</param>
        /// <returns>评论总数</returns>