discourse/app/services/group_message.rb
Krzysztof Kotlarek d99735e24d
FEATURE: remove duplicated messages about new advices (#14319)
Discourse is sending regularly message to admins when potential problems are persisted. Most of the time they have exactly the same content. In that case, when there are no replies, the old one should be trashed before a new one is created.
2021-09-15 08:59:25 +10:00

92 lines
2.8 KiB
Ruby

# frozen_string_literal: true
# GroupMessage sends a private message to a group.
# It will also avoid sending the same message repeatedly, which can happen with
# notifications to moderators when spam is detected.
#
# Options:
#
# user: (User) If the message is about a user, pass the user object.
# limit_once_per: (seconds) Limit sending the given type of message once every X seconds.
# The default is 24 hours. Set to false to always send the message.
class GroupMessage
include Rails.application.routes.url_helpers
RECENT_MESSAGE_PERIOD = 3.months
def self.create(group_name, message_type, opts = {})
GroupMessage.new(group_name, message_type, opts).create
end
def initialize(group_name, message_type, opts = {})
@group_name = group_name
@message_type = message_type
@opts = opts
end
def create
unless sent_recently?
post = PostCreator.create(
Discourse.system_user,
target_group_names: [@group_name],
archetype: Archetype.private_message,
subtype: TopicSubtype.system_message,
title: I18n.t("system_messages.#{@message_type}.subject_template", message_params),
raw: I18n.t("system_messages.#{@message_type}.text_body_template", message_params)
)
remember_message_sent
post
else
false
end
end
def delete_previous!
posts = Post
.joins(topic: { topic_allowed_groups: :group })
.where(topic: {
posts_count: 1,
user_id: Discourse.system_user,
archetype: Archetype.private_message,
subtype: TopicSubtype.system_message,
title: I18n.t("system_messages.#{@message_type}.subject_template", message_params),
topic_allowed_groups: {
groups: { name: @group_name }
}
})
.where("posts.created_at > ?", RECENT_MESSAGE_PERIOD.ago)
.where(raw: I18n.t("system_messages.#{@message_type}.text_body_template", message_params).rstrip)
posts.find_each do |post|
PostDestroyer.new(Discourse.system_user, post).destroy
end
end
def message_params
@message_params ||= begin
h = { base_url: Discourse.base_url }.merge(@opts[:message_params] || {})
if @opts[:user]
h.merge!(username: @opts[:user].username,
user_url: user_path(@opts[:user].username))
end
h
end
end
def sent_recently?
return false if @opts[:limit_once_per] == false
Discourse.redis.get(sent_recently_key).present?
end
# default is to send no more than once every 24 hours (24 * 60 * 60 = 86,400 seconds)
def remember_message_sent
Discourse.redis.setex(sent_recently_key, @opts[:limit_once_per].try(:to_i) || 86_400, 1) unless @opts[:limit_once_per] == false
end
def sent_recently_key
"grpmsg:#{@group_name}:#{@message_type}:#{@opts[:user] ? @opts[:user].username : ''}"
end
end