freefire
4f3f3a265c
新增模块： - 友链（friendlink）后端处理 + 前端管理页与友链板 - 书库（library）：导入、章节、封面、阅读页、横竖版自适应 AdaptiveCoverSlot - 顶栏导航（header_nav）配置与 MobileTabBar/MobileRailDrawers 移动端抽屉 - 排行榜 service 测试、站点页面测试、时间线发布（timeline_release） 其它改动： - 后端 handlers/services 全量小幅调整 - 前端组件、库函数、URL/品牌/站点 URL 工具更新 - Lightbox 图片、MdEntries 条目卡、coverColor 派生色相等前端能力
401 lines
12 KiB
Go
401 lines
12 KiB
Go
package service
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import (
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"sort"
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"time"
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"github.com/freefire/jiang13-bbs/model"
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"gorm.io/gorm"
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)
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// 榜单周期与统计维度（handler 侧做白名单校验）
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const (
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PeriodWeek = "week"
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PeriodMonth = "month"
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PeriodAll = "all"
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MetricAll = "all" // 综合：总榜=累计积分，周/月=周期内获得积分
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MetricPost = "post" // 发帖最多
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MetricComment = "comment" // 回复最多
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MetricLike = "like" // 获赞最多
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MetricAnswer = "answer" // 最佳答案（回答被采纳）
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)
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// LeaderboardEntry 排行榜单条（领奖台/列表通用）
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type LeaderboardEntry struct {
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Rank int `json:"rank"`
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ID uint `json:"id"`
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Username string `json:"username"`
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Nickname string `json:"nickname"`
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Avatar string `json:"avatar"`
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TotalPoints int `json:"total_points"` // 累计获得积分（经验，定级依据）
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Points int `json:"points"` // 当前积分余额
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Level int `json:"level"` // AfterFind 按 TotalPoints 计算
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PostCount int64 `json:"post_count"`
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CommentCount int64 `json:"comment_count"`
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LikeCount int64 `json:"like_count"` // 其 published 帖获赞之和
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AnswerCount int64 `json:"answer_count"`
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Score int64 `json:"score"` // 排名依据：见 scoreOf
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}
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// LeaderboardResult 榜单响应
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type LeaderboardResult struct {
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Period string `json:"period"` // week | month | all
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Metric string `json:"metric"` // all | post | comment | like | answer
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Entries []LeaderboardEntry `json:"entries"`
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}
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// MyRank 当前用户在指定榜单的排名（含与上一周期的名次对比）
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type MyRank struct {
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Period string `json:"period"`
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Metric string `json:"metric"`
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Rank int `json:"rank"` // 1 起；0 = 未上榜
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Total int `json:"total"` // 上榜总人数
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Score int64 `json:"score"` // 当前得分
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Change int `json:"change"` // 名次变化：正=上升，负=下降，0=持平
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HasChange bool `json:"has_change"`
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}
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// LeaderboardService 用户贡献榜
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type LeaderboardService struct {
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db *gorm.DB
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}
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func NewLeaderboardService(db *gorm.DB) *LeaderboardService {
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return &LeaderboardService{db: db}
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}
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// statsRow 用户内容统计聚合行
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type statsRow struct {
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UserID uint
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PostCount int64
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CommentCount int64
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LikeCount int64
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AnswerCount int64
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}
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// contentStats 聚合发帖/回帖/获赞（posts+comments+post 获赞三臂 UNION ALL 单查询）。
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// from/to 任一非 nil 时各臂加时间窗；SQL 范式与 overview.go 活跃用户聚合一致。
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func (s *LeaderboardService) contentStats(from, to *time.Time) (map[uint]statsRow, error) {
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clause := ""
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var timeArgs []interface{}
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if from != nil {
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clause += " AND created_at >= ?"
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timeArgs = append(timeArgs, *from)
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}
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if to != nil {
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clause += " AND created_at < ?"
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timeArgs = append(timeArgs, *to)
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}
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postArm := "SELECT user_id, 1 AS is_post, 0 AS like_sum FROM posts WHERE status = ?" + clause + " AND deleted_at IS NULL"
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commentArm := "SELECT user_id, 0 AS is_post, 0 AS like_sum FROM comments WHERE status = ?" + clause + " AND deleted_at IS NULL"
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likeArm := "SELECT user_id, 0 AS is_post, like_count AS like_sum FROM posts WHERE status = ?" + clause + " AND deleted_at IS NULL"
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// 占位符顺序与三臂拼接顺序严格对应
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args := []interface{}{}
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for i := 0; i < 3; i++ {
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args = append(args, model.ContentStatusPublished)
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args = append(args, timeArgs...)
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}
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sql := "SELECT a.user_id AS user_id, SUM(a.is_post) AS post_count, SUM(1 - a.is_post) AS comment_count, SUM(a.like_sum) AS like_count" +
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" FROM (" + postArm + " UNION ALL " + commentArm + " UNION ALL " + likeArm + ") AS a" +
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" JOIN users AS u ON u.id = a.user_id WHERE u.banned = ? AND u.deleted_at IS NULL GROUP BY a.user_id"
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args = append(args, false)
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var rows []statsRow
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if err := s.db.Raw(sql, args...).Scan(&rows).Error; err != nil {
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return nil, err
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}
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out := make(map[uint]statsRow, len(rows))
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for _, r := range rows {
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out[r.UserID] = r
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}
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return out, nil
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}
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// earnedPoints 周期内累计获得积分：point_ledgers 正入账合计（排除 bounty_refund，
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// 与 users.total_points 启动回填口径一致），仅统计未封禁用户。
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// 签到、发帖/回复奖励、被推荐、悬赏采纳等均按实际入账分值计入贡献值
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func (s *LeaderboardService) earnedPoints(from, to *time.Time) (map[uint]int64, error) {
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clause := ""
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var timeArgs []interface{}
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if from != nil {
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clause += " AND l.created_at >= ?"
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timeArgs = append(timeArgs, *from)
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}
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if to != nil {
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clause += " AND l.created_at < ?"
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timeArgs = append(timeArgs, *to)
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}
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sql := "SELECT l.user_id AS user_id, SUM(l.delta) AS pts FROM point_ledgers l" +
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" JOIN users AS u ON u.id = l.user_id" +
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" WHERE l.delta > 0 AND l.reason <> ? AND u.banned = ? AND u.deleted_at IS NULL" + clause +
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" GROUP BY l.user_id"
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args := []interface{}{model.PointReasonBountyRefund, false}
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args = append(args, timeArgs...)
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var rows []struct {
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UserID uint
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Pts int64
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}
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if err := s.db.Raw(sql, args...).Scan(&rows).Error; err != nil {
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return nil, err
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}
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out := make(map[uint]int64, len(rows))
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for _, r := range rows {
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out[r.UserID] = r.Pts
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}
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return out, nil
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}
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// answerStats 最佳答案统计：问答/悬赏帖中其评论被采纳（type_meta.accepted_comment_id）的条数，
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// 按帖子发布时间窗计；type_meta 为 JSON 字符串，空值/缺失统一落 0（JOIN 不到即不计）
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func (s *LeaderboardService) answerStats(from, to *time.Time) (map[uint]int64, error) {
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clause := ""
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var timeArgs []interface{}
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if from != nil {
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clause += " AND p.created_at >= ?"
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timeArgs = append(timeArgs, *from)
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}
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if to != nil {
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clause += " AND p.created_at < ?"
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timeArgs = append(timeArgs, *to)
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}
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accepted := "COALESCE(NULLIF(NULLIF(p.type_meta, '')::jsonb ->> 'accepted_comment_id', ''), '0')::bigint"
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sql := "SELECT c.user_id AS user_id, COUNT(*) AS answer_count FROM posts p" +
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" JOIN comments c ON c.id = " + accepted +
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" JOIN users u ON u.id = c.user_id" +
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" WHERE p.post_type IN (?, ?) AND p.status = ? AND p.deleted_at IS NULL" +
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" AND " + accepted + " > 0 AND c.deleted_at IS NULL AND u.banned = ? AND u.deleted_at IS NULL" + clause +
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" GROUP BY c.user_id"
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args := []interface{}{model.PostTypeQuestion, model.PostTypeBounty, model.ContentStatusPublished, false}
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args = append(args, timeArgs...)
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var rows []struct {
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UserID uint
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AnswerCount int64
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}
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if err := s.db.Raw(sql, args...).Scan(&rows).Error; err != nil {
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return nil, err
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}
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out := make(map[uint]int64, len(rows))
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for _, r := range rows {
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out[r.UserID] = r.AnswerCount
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}
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return out, nil
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}
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// statsFor 内容统计 + 最佳答案合并
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func (s *LeaderboardService) statsFor(from, to *time.Time) (map[uint]statsRow, error) {
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stats, err := s.contentStats(from, to)
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if err != nil {
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return nil, err
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}
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answers, err := s.answerStats(from, to)
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if err != nil {
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return nil, err
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}
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for id, n := range answers {
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r := stats[id]
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r.AnswerCount = n
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stats[id] = r
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}
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return stats, nil
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}
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// scoreOf 细分指标 → 排名得分；「全部」维度走积分口径（见 boardBetween / earnedPoints）
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func scoreOf(metric string, st statsRow) int64 {
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switch metric {
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case MetricPost:
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return st.PostCount
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case MetricComment:
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return st.CommentCount
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case MetricLike:
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return st.LikeCount
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case MetricAnswer:
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return st.AnswerCount
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}
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return 0
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}
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// entryFromUser 由用户行构造榜单条目（不含统计）
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func entryFromUser(rank int, u model.User) LeaderboardEntry {
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return LeaderboardEntry{
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Rank: rank,
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ID: u.ID,
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Username: u.Username,
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Nickname: u.Nickname,
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Avatar: u.Avatar,
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TotalPoints: u.TotalPoints,
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Points: u.Points,
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Level: u.Level,
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}
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}
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// periodBounds 周期 → [from, to) 时间窗与上一周期窗口；总榜两值均 nil
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func periodBounds(period string, now time.Time) (from, to, prevFrom, prevTo *time.Time) {
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switch period {
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case PeriodWeek:
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w := startOfWeek(now)
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pw := w.AddDate(0, 0, -7)
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return &w, nil, &pw, &w
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case PeriodMonth:
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m := time.Date(now.Year(), now.Month(), 1, 0, 0, 0, 0, now.Location())
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pm := m.AddDate(0, -1, 0)
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return &m, nil, &pm, &m
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default:
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return nil, nil, nil, nil
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}
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}
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// boardBetween 指定时间窗的全量榜单（未截断，Rank 未编号）。
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// 「全部」维度走积分口径（总榜=total_points，周/月=周期内获得积分，见 earnedPoints），
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// 细分维度走统计聚合口径。
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func (s *LeaderboardService) boardBetween(from, to *time.Time, period, metric string) ([]LeaderboardEntry, error) {
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if metric == MetricAll && from == nil {
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var users []model.User
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if err := s.db.
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Where("banned = ? AND total_points > 0", false).
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Order("total_points DESC, id ASC").
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Find(&users).Error; err != nil {
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return nil, err
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}
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stats, err := s.statsFor(nil, nil)
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if err != nil {
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return nil, err
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}
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entries := make([]LeaderboardEntry, 0, len(users))
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for _, u := range users {
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e := entryFromUser(0, u)
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e.Score = int64(u.TotalPoints)
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if r, ok := stats[u.ID]; ok {
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e.PostCount, e.CommentCount, e.LikeCount, e.AnswerCount =
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r.PostCount, r.CommentCount, r.LikeCount, r.AnswerCount
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}
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entries = append(entries, e)
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}
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return entries, nil
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}
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stats, err := s.statsFor(from, to)
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if err != nil {
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return nil, err
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}
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// 周/月·全部：贡献值=周期内累计获得积分，候选集并入仅签到/获奖无内容的用户
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usePts := metric == MetricAll && from != nil
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pts := map[uint]int64{}
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if usePts {
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if pts, err = s.earnedPoints(from, to); err != nil {
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return nil, err
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}
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}
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cand := make(map[uint]statsRow, len(stats)+len(pts))
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for id, r := range stats {
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cand[id] = r
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}
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for id := range pts {
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if _, ok := cand[id]; !ok {
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cand[id] = statsRow{}
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}
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}
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entries := make([]LeaderboardEntry, 0, len(cand))
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for id, r := range cand {
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score := scoreOf(metric, r)
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if usePts {
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score = pts[id]
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}
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if score <= 0 {
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continue
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}
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entries = append(entries, LeaderboardEntry{ID: id, Score: score, PostCount: r.PostCount,
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CommentCount: r.CommentCount, LikeCount: r.LikeCount, AnswerCount: r.AnswerCount})
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}
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if len(entries) == 0 {
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return entries, nil
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}
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ids := make([]uint, 0, len(entries))
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for _, e := range entries {
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ids = append(ids, e.ID)
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}
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var users []model.User
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if err := s.db.Where("id IN ?", ids).Find(&users).Error; err != nil {
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return nil, err
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}
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info := make(map[uint]model.User, len(users))
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for _, u := range users {
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info[u.ID] = u
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}
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full := make([]LeaderboardEntry, 0, len(entries))
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for _, e := range entries {
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u, ok := info[e.ID]
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if !ok {
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continue
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}
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ne := entryFromUser(0, u)
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ne.PostCount, ne.CommentCount, ne.LikeCount, ne.AnswerCount =
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e.PostCount, e.CommentCount, e.LikeCount, e.AnswerCount
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ne.Score = e.Score
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full = append(full, ne)
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}
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sort.Slice(full, func(i, j int) bool {
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if full[i].Score != full[j].Score {
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return full[i].Score > full[j].Score
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}
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if full[i].TotalPoints != full[j].TotalPoints {
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return full[i].TotalPoints > full[j].TotalPoints
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}
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return full[i].ID < full[j].ID
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})
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return full, nil
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}
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// Board 指定周期×维度的 Top N 榜单
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func (s *LeaderboardService) Board(period, metric string, limit int) (*LeaderboardResult, error) {
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from, to, _, _ := periodBounds(period, time.Now())
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full, err := s.boardBetween(from, to, period, metric)
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if err != nil {
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return nil, err
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}
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if len(full) > limit {
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full = full[:limit]
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}
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for i := range full {
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full[i].Rank = i + 1
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}
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return &LeaderboardResult{Period: period, Metric: metric, Entries: full}, nil
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}
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// MyRank 当前用户在指定榜单的排名；周/月榜带与上一周期的名次对比（正=上升）
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func (s *LeaderboardService) MyRank(period, metric string, userID uint) (*MyRank, error) {
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from, to, prevFrom, prevTo := periodBounds(period, time.Now())
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full, err := s.boardBetween(from, to, period, metric)
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if err != nil {
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return nil, err
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}
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res := &MyRank{Period: period, Metric: metric, Total: len(full)}
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for i, e := range full {
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if e.ID == userID {
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res.Rank = i + 1
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res.Score = e.Score
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break
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}
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}
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if period == PeriodWeek || period == PeriodMonth {
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prev, err := s.boardBetween(prevFrom, prevTo, period, metric)
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if err != nil {
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return nil, err
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}
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var prevRank int
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for i, e := range prev {
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if e.ID == userID {
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prevRank = i + 1
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break
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}
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}
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if res.Rank > 0 && prevRank > 0 {
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res.HasChange = true
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res.Change = prevRank - res.Rank
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}
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}
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return res, nil
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}
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