/// <summary>
/// 获取页面视图模型
/// </summary>
/// <param name="page"></param>
/// <param name="size"></param>
/// <param name="orderBy"></param>
/// <param name="user"></param>
/// <returns></returns>
private async Task <IndexPageViewModel> GetIndexPageViewModelAsync(int page, int size, OrderBy orderBy, UserInfoOutputDto user)
{
IQueryable <PostOutputDto> postList = PostBll.LoadEntitiesNoTracking <PostOutputDto>(p => (p.Status == Status.Pended || user.IsAdmin)); //准备文章的查询
var notices = NoticeBll.LoadPageEntitiesFromL2CacheNoTracking <DateTime, NoticeOutputDto>(1, 5, out int _, n => (n.Status == Status.Display || user.IsAdmin), n => n.ModifyDate, false).ToList(); //加载前5条公告
var cats = await CategoryBll.LoadEntitiesFromL2CacheNoTrackingAsync <string, CategoryOutputDto>(c => c.Status == Status.Available, c => c.Name).ConfigureAwait(true); //加载分类目录
var comments = CommentBll.LoadPageEntitiesFromL2CacheNoTracking <DateTime, CommentOutputDto>(1, 10, out int _, c => c.Status == Status.Pended && c.Post.Status == Status.Pended || user.IsAdmin, c => c.CommentDate, false).ToList(); //加在新评论
var start = DateTime.Today.AddDays(-7);
var hotSearches = await SearchDetailsBll.LoadEntitiesNoTracking(s => s.SearchTime > start, s => s.SearchTime, false).GroupBy(s => s.KeyWords.ToLower()).OrderByDescending(g => g.Count()).Take(10).Select(g => new KeywordsRankOutputDto()
{
KeyWords = g.FirstOrDefault().KeyWords,
SearchCount = g.Count()
}).ToListAsync(); //热词统计
var hot6Post = await(new Random().Next() % 2 == 0 ? postList.OrderByDescending(p => p.ViewCount) : postList.OrderByDescending(p => p.VoteUpCount)).Skip(0).Take(5).Cacheable().ToListAsync(); //热门文章
var topPostWeek = await PostBll.SqlQuery <SimplePostModel>("SELECT [Id],[Title] from Post WHERE Id in (SELECT top 10 PostId FROM [dbo].[PostAccessRecord] where DATEDIFF(week,AccessTime,getdate())<=1 GROUP BY PostId ORDER BY sum(ClickCount) desc)").ToListAsync(); //文章周排行
var topPostMonth = await PostBll.SqlQuery <SimplePostModel>("SELECT [Id],[Title] from Post WHERE Id in (SELECT top 10 PostId FROM [dbo].[PostAccessRecord] where DATEDIFF(month,AccessTime,getdate())<=1 GROUP BY PostId ORDER BY sum(ClickCount) desc)").ToListAsync(); //文章月排行
var topPostYear = await PostBll.SqlQuery <SimplePostModel>("SELECT [Id],[Title] from Post WHERE Id in (SELECT top 10 PostId FROM [dbo].[PostAccessRecord] where DATEDIFF(year,AccessTime,getdate())<=1 GROUP BY PostId ORDER BY sum(ClickCount) desc)").ToListAsync(); //文章年度排行
var tags = new List <string>(); //标签云
var tagdic = new Dictionary <string, int>();
var newdic = new Dictionary <string, int>(); //标签云最终结果
postList.Select(p => p.Label).ToList().ForEach(m =>
{
if (!string.IsNullOrEmpty(m))
{
tags.AddRange(m.Split(',', '，'));
}
});//统计标签
tags.GroupBy(s => s).ForEach(g =>
{
tagdic.Add(g.Key, g.Count());
}); //将标签分组
if (tagdic.Any())
{
int min = tagdic.Values.Min();
tagdic.ForEach(kv =>
{
var fontsize = (int)Math.Floor(kv.Value * 1.0 / (min * 1.0) + 12.0);
newdic.Add(kv.Key, fontsize >= 36 ? 36 : fontsize);
});
}
IList <PostOutputDto> posts;
switch (orderBy)//文章排序
{
case OrderBy.CommentCount:
posts = postList.OrderByDescending(p => p.IsFixedTop).ThenByDescending(p => p.Comment.Count).Skip(size * (page - 1)).Take(size).ToList();
break;
case OrderBy.PostDate:
posts = postList.OrderByDescending(p => p.IsFixedTop).ThenByDescending(p => p.PostDate).Skip(size * (page - 1)).Take(size).ToList();
break;
case OrderBy.ViewCount:
posts = postList.OrderByDescending(p => p.IsFixedTop).ThenByDescending(p => p.ViewCount).Skip(size * (page - 1)).Take(size).ToList();
break;
case OrderBy.VoteCount:
posts = postList.OrderByDescending(p => p.IsFixedTop).ThenByDescending(p => p.VoteUpCount).Skip(size * (page - 1)).Take(size).ToList();
break;
default:
posts = postList.OrderByDescending(p => p.IsFixedTop).ThenByDescending(p => p.ModifyDate).Skip(size * (page - 1)).Take(size).ToList();
break;
}
return(new IndexPageViewModel()
{
Categories = cats.ToList(),
Comments = comments,
HotSearch = hotSearches,
Notices = notices,
Posts = posts,
Tags = newdic,
Top6Post = hot6Post,
TopPostByMonth = topPostMonth,
TopPostByWeek = topPostWeek,
TopPostByYear = topPostYear,
PostsQueryable = postList
});
}