first commit

DOAN.Service/Content/ArticlePraiseService.cs

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+using Infrastructure.Attribute;
+using DOAN.Model.Content;
+using DOAN.Service.Content.IService;
+using DOAN.ServiceCore.Services;
+
+namespace DOAN.Service.Content
+{
+    [AppService(ServiceType = typeof(IArticlePraiseService), ServiceLifetime = LifeTime.Transient)]
+    public class ArticlePraiseService : BaseService<ArticlePraise>, IArticlePraiseService
+    {
+        private IArticleService _articleService;
+        private ISysUserMsgService _sysUserMsgService;
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="articleService"></param>
+        /// <param name="userMsgService"></param>
+        public ArticlePraiseService(IArticleService articleService, ISysUserMsgService userMsgService)
+        {
+            _articleService = articleService;
+            _sysUserMsgService = userMsgService;
+        }
+
+        /// <summary>
+        /// 点赞
+        /// </summary>
+        /// <param name="dto"></param>
+        /// <returns></returns>
+        public int Praise(ArticlePraise dto)
+        {
+            int result = 0;
+            var praiseInfo = GetFirst(f => f.UserId == dto.UserId && f.ArticleId == dto.ArticleId);
+            var isPraise = 0;
+            var r = UseTran(() =>
+            {
+                //第一次点赞插入数据
+                if (praiseInfo == null)
+                {
+                    Insertable(dto).ExecuteReturnSnowflakeId();
+                    result = _articleService.PraiseArticle(dto.ArticleId);
+                    isPraise = 1;
+
+                    if (dto.UserId != dto.ToUserId)
+                    {
+                        _sysUserMsgService.AddSysUserMsg(new SysUserMsg()
+                        {
+                            FromUserid = dto.UserId,
+                            UserId = dto.ToUserId,
+                            Content = "赞了你的内容",
+                            MsgType = UserMsgType.PRAISE,
+                            TargetId = dto.ArticleId,
+                        });
+                    }
+                }
+                else
+                {
+                    if (praiseInfo.IsDelete == 0)
+                    {
+                        result = CanclePraise(dto.UserId, dto.ArticleId);
+                        //文章点赞-1
+                        _articleService.CancelPraise(dto.ArticleId);
+                    }
+                    else
+                    {
+                        //文章点赞+1
+                        _articleService.PraiseArticle(dto.ArticleId);
+                        //恢复点赞为未删除状态
+                        PlusPraise(praiseInfo.PId);
+                        isPraise = 1;
+                    }
+                }
+            });
+            return r.IsSuccess && isPraise == 1 ? 1 : 0;
+        }
+
+        /// <summary>
+        /// 取消点赞点赞
+        /// </summary>
+        /// <param name="userid"></param>
+        /// <param name="articleId"></param>
+        /// <returns></returns>
+        public int CanclePraise(long userid, long articleId)
+        {
+            return Deleteable()
+                .Where(f => f.ArticleId == articleId && f.UserId == userid)
+                .IsLogic()
+                .ExecuteCommand(deleteValue: 1);
+        }
+
+        /// <summary>
+        /// 恢复点赞
+        /// </summary>
+        /// <param name="pid"></param>
+        /// <returns></returns>
+        public int PlusPraise(long pid)
+        {
+            return Deleteable()
+                .Where(f => f.PId == pid)
+                .IsLogic()
+                .ExecuteCommand(deleteValue: 0);
+        }
+    }
+}