57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
package service
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import (
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"time"
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"kefu-cloud/server/internal/model"
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"kefu-cloud/server/internal/ws"
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)
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const VisitorOnlineTimeout = 45 * time.Second
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// VisitorIsOnline 根据最近心跳和显式离开时间动态判断访客是否在线。
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func VisitorIsOnline(session *model.Session, now time.Time) bool {
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if session == nil || session.Status == "ended" || session.Status == "archived" {
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return false
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}
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if session.LastSeenAt == nil {
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return false
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}
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if session.VisitorLeftAt != nil && !session.LastSeenAt.After(*session.VisitorLeftAt) {
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return false
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}
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return now.Sub(*session.LastSeenAt) <= VisitorOnlineTimeout
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}
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// UpdateVisitorPresence 处理 visible/hidden/leave 状态，并返回切换前后的在线状态。
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func UpdateVisitorPresence(session *model.Session, state string, now time.Time) (bool, bool, error) {
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wasOnline := VisitorIsOnline(session, now)
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updates := map[string]interface{}{}
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switch state {
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case "hidden", "leave":
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leftAt := now
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updates["visitor_left_at"] = leftAt
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session.VisitorLeftAt = &leftAt
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default:
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updates["last_seen_at"] = now
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updates["visitor_left_at"] = nil
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session.LastSeenAt = &now
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session.VisitorLeftAt = nil
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}
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if err := model.DB.Model(session).Updates(updates).Error; err != nil {
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return wasOnline, false, err
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}
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return wasOnline, VisitorIsOnline(session, now), nil
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}
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func broadcastVisitorPresence(session *model.Session, online bool) {
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payload, err := ws.NewEvent("visitor_presence", session.ID, map[string]interface{}{
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"visitor_online": online,
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"last_seen_at": session.LastSeenAt,
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"visitor_left_at": session.VisitorLeftAt,
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})
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if err == nil {
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ws.DefaultHub.BroadcastToTenantStaff(session.TenantID, payload)
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}
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}
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