Function validatePrivacySetting

handlers.go:7052–7063

validatePrivacySetting reports whether name is a supported privacy setting and value is one of the values WhatsApp accepts for it.

(name, value string)

				// Parse the timestamp and format it properly to remove monotonic clock info
				var formattedTime string
				if parsedTime, err := time.Parse("2006-01-02 15:04:05.999999999 -0700 MST", mapping.LastMessageTime); err == nil {
					formattedTime = parsedTime.Format(time.RFC3339Nano)
				} else if parsedTime, err := time.Parse(time.RFC3339Nano, mapping.LastMessageTime); err == nil {
					formattedTime = parsedTime.Format(time.RFC3339Nano)
				} else {
					// If parsing fails, clean up the monotonic clock part manually
					formattedTime = strings.Split(mapping.LastMessageTime, " m=")[0]
				}

				chatInfo := ChatInfo{
					ChatJID:     mapping.ChatJID,
					LastUpdated: formattedTime,
				}
				result[mapping.UserID] = append(result[mapping.UserID], chatInfo)
			}