init: web_hgdjc_server

2026-11-07 10:44:09 +08:00
commit 71a4f4e175
713 changed files with 147749 additions and 0 deletions
@@ -0,0 +1,55 @@
+package srv_aicomment
+
+import (
+	"time"
+
+	"videoweb/pub/models/playletmod"
+)
+
+func PlayletPublishedAt(playlet *playletmod.Playlet) time.Time {
+	if playlet == nil {
+		return time.Time{}
+	}
+	if !playlet.OnlineAt.IsZero() {
+		return playlet.OnlineAt
+	}
+	if !playlet.ReviewAt.IsZero() {
+		return playlet.ReviewAt
+	}
+	return playlet.CreatedAt
+}
+
+func ScatteredCommentTime(publishedAt, endAt time.Time, objectID, commentID int64, index, total int) time.Time {
+	if total <= 0 || index < 0 || index >= total || publishedAt.IsZero() || !publishedAt.Before(endAt) {
+		return endAt
+	}
+
+	span := endAt.Sub(publishedAt)
+	segment := span / time.Duration(total)
+	segmentStart := segment * time.Duration(index)
+	segmentEnd := segment * time.Duration(index+1)
+	if index == total-1 {
+		segmentEnd = span
+	}
+	width := segmentEnd - segmentStart
+	if width <= 0 {
+		return publishedAt.Add(segmentStart)
+	}
+
+	seed := scatterSeed(objectID, commentID, int64(index))
+	offset := time.Duration(seed % uint64(width))
+	return publishedAt.Add(segmentStart + offset)
+}
+
+func scatterSeed(values ...int64) uint64 {
+	const (
+		offsetBasis = uint64(1469598103934665603)
+		prime       = uint64(1099511628211)
+	)
+	hash := offsetBasis
+	for _, value := range values {
+		hash ^= uint64(value)
+		hash *= prime
+	}
+	return hash
+}