140 lines
4.8 KiB
C#
140 lines
4.8 KiB
C#
using FreeSql;
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using LiveForum.IService.Posts;
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using LiveForum.Model;
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using System;
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using System.Threading.Tasks;
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namespace LiveForum.Service.Posts
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{
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/// <summary>
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/// 发帖/回复时间间隔校验服务实现
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/// </summary>
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public class PostReplyIntervalService : IPostReplyIntervalService
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{
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private readonly IBaseRepository<T_PostReplyIntervals> _intervalsRepository;
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private readonly IBaseRepository<T_Users> _usersRepository;
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private readonly IBaseRepository<T_Posts> _postsRepository;
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private readonly IBaseRepository<T_Comments> _commentsRepository;
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/// <summary>
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/// 默认间隔值（未配置时使用），0 表示不限制
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/// </summary>
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private const int DEFAULT_INTERVAL = 0;
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/// <summary>
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/// 构造函数
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/// </summary>
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public PostReplyIntervalService(
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IBaseRepository<T_PostReplyIntervals> intervalsRepository,
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IBaseRepository<T_Users> usersRepository,
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IBaseRepository<T_Posts> postsRepository,
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IBaseRepository<T_Comments> commentsRepository)
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{
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_intervalsRepository = intervalsRepository;
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_usersRepository = usersRepository;
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_postsRepository = postsRepository;
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_commentsRepository = commentsRepository;
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}
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/// <summary>
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/// 获取用户的发帖间隔配置（秒）
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/// </summary>
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public async Task<int> GetPostIntervalAsync(long userId)
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{
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var user = await _usersRepository.Select
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.Where(x => x.Id == userId)
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.FirstAsync();
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if (user?.CertifiedType == null || user.CertifiedType <= 0)
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return DEFAULT_INTERVAL;
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var config = await _intervalsRepository.Select
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.Where(x => x.CertificationTypeId == user.CertifiedType.Value)
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.FirstAsync();
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return config?.PostInterval ?? DEFAULT_INTERVAL;
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}
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/// <summary>
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/// 获取用户的回复间隔配置（秒）
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/// </summary>
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public async Task<int> GetReplyIntervalAsync(long userId)
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{
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var user = await _usersRepository.Select
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.Where(x => x.Id == userId)
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.FirstAsync();
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if (user?.CertifiedType == null || user.CertifiedType <= 0)
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return DEFAULT_INTERVAL;
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var config = await _intervalsRepository.Select
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.Where(x => x.CertificationTypeId == user.CertifiedType.Value)
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.FirstAsync();
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return config?.ReplyInterval ?? DEFAULT_INTERVAL;
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}
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/// <summary>
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/// 获取用户最近一次成功发帖时间
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/// </summary>
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public async Task<DateTime?> GetLastPostTimeAsync(long userId)
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{
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var lastPost = await _postsRepository.Select
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.Where(x => x.UserId == userId && !x.IsDeleted)
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.OrderByDescending(x => x.CreatedAt)
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.FirstAsync();
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return lastPost?.CreatedAt;
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}
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/// <summary>
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/// 获取用户最近一次成功回复时间
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/// </summary>
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public async Task<DateTime?> GetLastCommentTimeAsync(long userId)
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{
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var lastComment = await _commentsRepository.Select
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.Where(x => x.UserId == userId && !x.IsDeleted)
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.OrderByDescending(x => x.CreatedAt)
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.FirstAsync();
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return lastComment?.CreatedAt;
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}
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/// <summary>
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/// 校验发帖间隔，返回 null 表示通过，否则返回剩余秒数
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/// </summary>
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public async Task<int?> CheckPostIntervalAsync(long userId)
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{
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var interval = await GetPostIntervalAsync(userId);
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if (interval <= 0) return null; // 不限制
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var lastTime = await GetLastPostTimeAsync(userId);
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if (lastTime == null) return null; // 从未发帖
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var elapsed = (DateTime.Now - lastTime.Value).TotalSeconds;
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if (elapsed >= interval) return null; // 已满足间隔
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return (int)Math.Ceiling(interval - elapsed); // 返回剩余秒数
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}
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/// <summary>
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/// 校验回复间隔，返回 null 表示通过，否则返回剩余秒数
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/// </summary>
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public async Task<int?> CheckReplyIntervalAsync(long userId)
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{
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var interval = await GetReplyIntervalAsync(userId);
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if (interval <= 0) return null; // 不限制
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var lastTime = await GetLastCommentTimeAsync(userId);
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if (lastTime == null) return null; // 从未回复
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var elapsed = (DateTime.Now - lastTime.Value).TotalSeconds;
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if (elapsed >= interval) return null; // 已满足间隔
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return (int)Math.Ceiling(interval - elapsed); // 返回剩余秒数
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}
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}
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}
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