discourse/app/models/concerns/topic_tracking_state_publis...

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# frozen_string_literal: true
module TopicTrackingStatePublishable
extend ActiveSupport::Concern
class_methods do
def publish_read_message(
message_type:,
channel_name:,
topic_id:,
user:,
last_read_post_number:,
notification_level: nil
)
highest_post_number =
DB.query_single(
"SELECT #{user.whisperer? ? "highest_staff_post_number" : "highest_post_number"} FROM topics WHERE id = ?",
topic_id,
).first
message = {
message_type: message_type,
topic_id: topic_id,
payload: {
last_read_post_number: last_read_post_number,
notification_level: notification_level,
highest_post_number: highest_post_number,
},
}.as_json
MessageBus.publish(channel_name, message, user_ids: [user.id])
end
end
end