96 lines
2.8 KiB
Go
96 lines
2.8 KiB
Go
package weekstar
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import (
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"fmt"
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"strings"
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"time"
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"chatapp3-golang/internal/model"
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)
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// referenceTimeForPage 返回页面应参考的周期时间点，未开始取 startAt，已结束取结束前一秒。
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func (s *WeekStarService) referenceTimeForPage(configRow *model.WeekStarActivityConfig, now time.Time) time.Time {
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if configRow == nil {
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return now
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}
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startAt := s.fromStorageWallClock(configRow.StartAt)
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endAt := s.fromStorageWallClock(configRow.EndAt)
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switch {
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case now.Before(startAt):
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return startAt
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case !now.Before(endAt):
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return endAt.Add(-time.Second)
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default:
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return now
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}
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}
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// cycleBounds 返回某个时间所在周的起止边界。
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func (s *WeekStarService) cycleBounds(t time.Time) (time.Time, time.Time) {
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start := s.cycleStart(t)
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return start, start.AddDate(0, 0, 7)
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}
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// cycleStart 计算某个时间所在周的周一 00:00，作为周榜周期起点。
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func (s *WeekStarService) cycleStart(t time.Time) time.Time {
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local := t.In(s.location)
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weekday := int(local.Weekday())
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if weekday == 0 {
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weekday = 7
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}
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startDay := local.AddDate(0, 0, -(weekday - 1))
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return time.Date(startDay.Year(), startDay.Month(), startDay.Day(), 0, 0, 0, 0, s.location)
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}
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// cycleKey 把周期开始时间格式化为稳定的周期标识，例如 20260414。
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func (s *WeekStarService) cycleKey(start time.Time) string {
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return start.In(s.location).Format("20060102")
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}
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// toStorageWallClock 把活动时区时间转换为数据库约定的墙上时间存储格式。
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func (s *WeekStarService) toStorageWallClock(t time.Time) time.Time {
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local := t.In(s.location)
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return time.Date(
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local.Year(),
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local.Month(),
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local.Day(),
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local.Hour(),
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local.Minute(),
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local.Second(),
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local.Nanosecond(),
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s.location,
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)
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}
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// fromStorageWallClock 把数据库里的墙上时间恢复到活动时区，便于业务计算和展示。
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func (s *WeekStarService) fromStorageWallClock(t time.Time) time.Time {
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return time.Date(
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t.Year(),
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t.Month(),
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t.Day(),
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t.Hour(),
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t.Minute(),
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t.Second(),
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t.Nanosecond(),
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s.location,
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)
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}
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// rankRedisKey 返回某个活动某个周期的实时排行 Redis Key。
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func (s *WeekStarService) rankRedisKey(configID int64, cycleKey string) string {
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return fmt.Sprintf("week-star:rank:%d:%s", configID, cycleKey)
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}
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// settleLockKey 返回某个活动某个周期的结算锁 Redis Key。
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func (s *WeekStarService) settleLockKey(configID int64, cycleKey string) string {
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return fmt.Sprintf("week-star:settle-lock:%d:%s", configID, cycleKey)
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}
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// normalizeSysOrigin 兜底系统标识为空时使用默认系统，并统一转成大写。
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func (s *WeekStarService) normalizeSysOrigin(sysOrigin string) string {
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if strings.TrimSpace(sysOrigin) == "" {
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return strings.ToUpper(strings.TrimSpace(s.cfg.WeekStar.DefaultSysOrigin))
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}
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return strings.ToUpper(strings.TrimSpace(sysOrigin))
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}
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