discourse/app/models/topic_converter.rb

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# frozen_string_literal: true
class TopicConverter
attr_reader :topic
def initialize(topic, user)
@topic = topic
@user = user
end
def convert_to_public_topic(category_id = nil)
Topic.transaction do
category_id =
if category_id
category_id
elsif SiteSetting.allow_uncategorized_topics
SiteSetting.uncategorized_category_id
else
Category.where(read_restricted: false)
.where.not(id: SiteSetting.uncategorized_category_id)
.order('id asc')
.pluck_first(:id)
end
PostRevisor.new(@topic.first_post, @topic).revise!(
@user,
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category_id: category_id,
archetype: Archetype.default
)
update_user_stats
update_post_uploads_secure_status
Jobs.enqueue(:topic_action_converter, topic_id: @topic.id)
Jobs.enqueue(:delete_inaccessible_notifications, topic_id: @topic.id)
watch_topic(topic)
end
@topic
end
def convert_to_private_message
Topic.transaction do
@topic.update_category_topic_count_by(-1) if @topic.visible
PostRevisor.new(@topic.first_post, @topic).revise!(
@user,
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category_id: nil,
archetype: Archetype.private_message
)
add_allowed_users
update_post_uploads_secure_status
UserProfile.remove_featured_topic_from_all_profiles(@topic)
Jobs.enqueue(:topic_action_converter, topic_id: @topic.id)
Jobs.enqueue(:delete_inaccessible_notifications, topic_id: @topic.id)
watch_topic(topic)
end
@topic
end
private
def posters
@posters ||= @topic.posts.distinct.pluck(:user_id)
end
def increment_users_post_count
update_users_post_count(:increment)
end
def decrement_users_post_count
update_users_post_count(:decrement)
end
def update_users_post_count(action)
operation = action == :increment ? "+" : "-"
# NOTE that DirectoryItem.refresh will overwrite this by counting UserAction records.
#
# Changes user_stats (post_count) by the number of posts in the topic.
# First post, hidden posts and non-regular posts are ignored.
DB.exec(<<~SQL)
UPDATE user_stats
SET post_count = post_count #{operation} X.count
FROM (
SELECT
us.user_id,
COUNT(*) AS count
FROM user_stats us
INNER JOIN posts ON posts.topic_id = #{@topic.id.to_i} AND posts.user_id = us.user_id
WHERE posts.post_number > 1
AND NOT posts.hidden
AND posts.post_type = #{Post.types[:regular].to_i}
GROUP BY us.user_id
) X
WHERE X.user_id = user_stats.user_id
SQL
end
def update_user_stats
increment_users_post_count
UserStatCountUpdater.increment!(@topic.first_post)
end
def add_allowed_users
decrement_users_post_count
UserStatCountUpdater.decrement!(@topic.first_post)
existing_allowed_users = @topic.topic_allowed_users.pluck(:user_id)
users_to_allow = posters << @user.id
if (users_to_allow | existing_allowed_users).length > SiteSetting.max_allowed_message_recipients
users_to_allow = [@user.id]
end
(users_to_allow - existing_allowed_users).uniq.each do |user_id|
@topic.topic_allowed_users.build(user_id: user_id)
end
@topic.save!
end
def watch_topic(topic)
@topic.notifier.watch_topic!(topic.user_id)
@topic.reload.topic_allowed_users.each do |tau|
next if tau.user_id < 0 || tau.user_id == topic.user_id
topic.notifier.watch!(tau.user_id)
end
end
def update_post_uploads_secure_status
DB.after_commit do
Jobs.enqueue(:update_topic_upload_security, topic_id: @topic.id)
end
end
end