mirror of
https://github.com/discourse/discourse.git
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2a95c5c5d6
The first post isn't moved. It gets copied during a move. Notifications of this special type should still link to the original first post.
389 lines
11 KiB
Ruby
389 lines
11 KiB
Ruby
# frozen_string_literal: true
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class PostMover
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attr_reader :original_topic, :destination_topic, :user, :post_ids
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def self.move_types
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@move_types ||= Enum.new(:new_topic, :existing_topic)
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end
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def initialize(original_topic, user, post_ids, move_to_pm: false)
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@original_topic = original_topic
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@user = user
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@post_ids = post_ids
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@move_to_pm = move_to_pm
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end
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def to_topic(id, participants: nil)
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@move_type = PostMover.move_types[:existing_topic]
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topic = Topic.find_by_id(id)
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if topic.archetype != @original_topic.archetype &&
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[@original_topic.archetype, topic.archetype].include?(Archetype.private_message)
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raise Discourse::InvalidParameters
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end
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Topic.transaction do
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move_posts_to topic
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end
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add_allowed_users(participants) if participants.present? && @move_to_pm
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enqueue_jobs(topic)
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topic
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end
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def to_new_topic(title, category_id = nil, tags = nil)
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@move_type = PostMover.move_types[:new_topic]
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post = Post.find_by(id: post_ids.first)
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raise Discourse::InvalidParameters unless post
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archetype = @move_to_pm ? Archetype.private_message : Archetype.default
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topic = Topic.transaction do
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new_topic = Topic.create!(
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user: post.user,
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title: title,
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category_id: category_id,
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created_at: post.created_at,
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archetype: archetype
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)
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DiscourseTagging.tag_topic_by_names(new_topic, Guardian.new(user), tags)
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move_posts_to new_topic
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watch_new_topic
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new_topic
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end
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enqueue_jobs(topic)
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topic
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end
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private
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def move_posts_to(topic)
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Guardian.new(user).ensure_can_see! topic
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@destination_topic = topic
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moving_all_posts = (@original_topic.posts.pluck(:id).sort == @post_ids.sort)
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create_temp_table
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move_each_post
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notify_users_that_posts_have_moved
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update_statistics
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update_user_actions
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update_last_post_stats
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if moving_all_posts
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@original_topic.update_status('closed', true, @user)
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end
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destination_topic.reload
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destination_topic
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ensure
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drop_temp_table
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end
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def create_temp_table
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DB.exec <<~SQL
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CREATE TEMPORARY TABLE moved_posts (
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old_topic_id INTEGER,
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old_post_id INTEGER,
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old_post_number INTEGER,
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new_topic_id INTEGER,
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new_topic_title VARCHAR,
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new_post_id INTEGER,
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new_post_number INTEGER
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)
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SQL
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end
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def drop_temp_table
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DB.exec("DROP TABLE IF EXISTS moved_posts")
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end
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def move_each_post
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max_post_number = destination_topic.max_post_number + 1
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@post_creator = nil
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@move_map = {}
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@reply_count = {}
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posts.each_with_index do |post, offset|
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unless post.is_first_post?
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@move_map[post.post_number] = offset + max_post_number
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else
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@move_map[post.post_number] = 1
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end
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if post.reply_to_post_number.present?
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@reply_count[post.reply_to_post_number] = (@reply_count[post.reply_to_post_number] || 0) + 1
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end
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end
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posts.each do |post|
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metadata = movement_metadata(post)
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new_post = post.is_first_post? ? create_first_post(post) : move(post)
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store_movement(metadata, new_post)
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if @move_to_pm && !destination_topic.topic_allowed_users.exists?(user_id: post.user_id)
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destination_topic.topic_allowed_users.create!(user_id: post.user_id)
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end
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end
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move_incoming_emails
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move_notifications
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update_reply_counts
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move_first_post_replies
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delete_post_replies
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end
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def create_first_post(post)
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@post_creator = PostCreator.new(
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post.user,
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raw: post.raw,
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topic_id: destination_topic.id,
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acting_user: user,
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cook_method: post.cook_method,
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via_email: post.via_email,
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raw_email: post.raw_email,
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skip_validations: true,
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created_at: post.created_at,
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guardian: Guardian.new(user),
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skip_jobs: true
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)
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new_post = @post_creator.create
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move_email_logs(post, new_post)
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PostAction.copy(post, new_post)
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new_post.update_column(:reply_count, @reply_count[1] || 0)
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new_post.custom_fields = post.custom_fields
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new_post.save_custom_fields
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DiscourseEvent.trigger(:post_moved, new_post, original_topic.id)
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new_post
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end
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def move(post)
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@first_post_number_moved ||= post.post_number
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update = {
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reply_count: @reply_count[post.post_number] || 0,
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post_number: @move_map[post.post_number],
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reply_to_post_number: @move_map[post.reply_to_post_number],
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topic_id: destination_topic.id,
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sort_order: @move_map[post.post_number]
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}
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unless @move_map[post.reply_to_post_number]
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update[:reply_to_user_id] = nil
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end
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post.attributes = update
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post.save(validate: false)
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DiscourseEvent.trigger(:post_moved, post, original_topic.id)
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# Move any links from the post to the new topic
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post.topic_links.update_all(topic_id: destination_topic.id)
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post
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end
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def movement_metadata(post)
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{
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old_topic_id: post.topic_id,
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old_post_id: post.id,
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old_post_number: post.post_number,
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new_topic_id: destination_topic.id,
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new_post_number: @move_map[post.post_number],
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new_topic_title: destination_topic.title
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}
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end
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def store_movement(metadata, new_post)
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metadata[:new_post_id] = new_post.id
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DB.exec(<<~SQL, metadata)
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INSERT INTO moved_posts(old_topic_id, old_post_id, old_post_number, new_topic_id, new_topic_title, new_post_id, new_post_number)
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VALUES (:old_topic_id, :old_post_id, :old_post_number, :new_topic_id, :new_topic_title, :new_post_id, :new_post_number)
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SQL
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end
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def move_incoming_emails
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DB.exec <<~SQL
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UPDATE incoming_emails ie
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SET topic_id = mp.new_topic_id,
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post_id = mp.new_post_id
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FROM moved_posts mp
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WHERE ie.topic_id = mp.old_topic_id AND ie.post_id = mp.old_post_id
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SQL
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end
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def move_email_logs(old_post, new_post)
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EmailLog
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.where(post_id: old_post.id)
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.update_all(post_id: new_post.id)
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end
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def move_notifications
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DB.exec <<~SQL
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UPDATE notifications n
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SET topic_id = mp.new_topic_id,
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post_number = mp.new_post_number,
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data = (data :: JSONB ||
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jsonb_strip_nulls(
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jsonb_build_object(
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'topic_title', CASE WHEN data :: JSONB ->> 'topic_title' IS NULL
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THEN NULL
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ELSE mp.new_topic_title END
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)
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)) :: JSON
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FROM moved_posts mp
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WHERE n.topic_id = mp.old_topic_id AND n.post_number = mp.old_post_number
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AND n.notification_type <> #{Notification.types[:watching_first_post]}
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SQL
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end
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def update_reply_counts
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DB.exec <<~SQL
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UPDATE posts p
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SET reply_count = GREATEST(0, reply_count - x.moved_reply_count)
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FROM (
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SELECT r.post_id, mp.new_topic_id, COUNT(1) AS moved_reply_count
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FROM moved_posts mp
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JOIN post_replies r ON (mp.old_post_id = r.reply_id)
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GROUP BY r.post_id, mp.new_topic_id
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) x
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WHERE x.post_id = p.id AND x.new_topic_id <> p.topic_id
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SQL
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end
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def move_first_post_replies
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DB.exec <<~SQL
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UPDATE post_replies pr
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SET post_id = mp.new_post_id
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FROM moved_posts mp, moved_posts mr
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WHERE mp.old_post_id <> mp.new_post_id AND pr.post_id = mp.old_post_id AND
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EXISTS (SELECT 1 FROM moved_posts mr WHERE mr.new_post_id = pr.reply_id)
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SQL
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end
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def delete_post_replies
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DB.exec <<~SQL
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DELETE
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FROM post_replies pr USING moved_posts mp, posts p, posts r
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WHERE (pr.reply_id = mp.old_post_id OR pr.post_id = mp.old_post_id) AND
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p.id = pr.post_id AND r.id = pr.reply_id AND p.topic_id <> r.topic_id
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SQL
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end
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def update_statistics
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destination_topic.update_statistics
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original_topic.update_statistics
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TopicUser.update_post_action_cache(topic_id: original_topic.id, post_action_type: :bookmark)
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TopicUser.update_post_action_cache(topic_id: destination_topic.id, post_action_type: :bookmark)
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end
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def update_user_actions
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UserAction.synchronize_target_topic_ids(posts.map(&:id))
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end
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def notify_users_that_posts_have_moved
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enqueue_notification_job
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create_moderator_post_in_original_topic
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end
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def enqueue_notification_job
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Jobs.enqueue(
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:notify_moved_posts,
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post_ids: post_ids,
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moved_by_id: user.id
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)
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end
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def create_moderator_post_in_original_topic
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move_type_str = PostMover.move_types[@move_type].to_s
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move_type_str.sub!("topic", "message") if @move_to_pm
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message = I18n.with_locale(SiteSetting.default_locale) do
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I18n.t(
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"move_posts.#{move_type_str}_moderator_post",
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count: posts.length,
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topic_link: posts.first.is_first_post? ?
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"[#{destination_topic.title}](#{destination_topic.relative_url})" :
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"[#{destination_topic.title}](#{posts.first.url})"
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)
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end
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post_type = @move_to_pm ? Post.types[:whisper] : Post.types[:small_action]
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original_topic.add_moderator_post(
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user, message,
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post_type: post_type,
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action_code: "split_topic",
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post_number: @first_post_number_moved
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)
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end
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def posts
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@posts ||= begin
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Post.where(topic: @original_topic, id: post_ids)
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.where.not(post_type: Post.types[:small_action])
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.where.not(raw: '')
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.order(:created_at).tap do |posts|
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raise Discourse::InvalidParameters.new(:post_ids) if posts.empty?
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end
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end
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end
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def update_last_post_stats
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post = destination_topic.ordered_posts.where.not(post_type: Post.types[:whisper]).last
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if post && post_ids.include?(post.id)
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attrs = {}
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attrs[:last_posted_at] = post.created_at
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attrs[:last_post_user_id] = post.user_id
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attrs[:bumped_at] = post.created_at unless post.no_bump
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attrs[:updated_at] = Time.now
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destination_topic.update_columns(attrs)
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end
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end
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def watch_new_topic
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if @destination_topic.archetype == Archetype.private_message
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if @original_topic.archetype == Archetype.private_message
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notification_levels = TopicUser.where(topic_id: @original_topic.id, user_id: posts.pluck(:user_id)).pluck(:user_id, :notification_level).to_h
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else
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notification_levels = posts.pluck(:user_id).uniq.map { |user_id| [user_id, TopicUser.notification_levels[:watching]] }.to_h
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end
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else
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notification_levels = [[@destination_topic.user_id, TopicUser.notification_levels[:watching]]]
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end
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notification_levels.each do |user_id, notification_level|
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TopicUser.change(
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user_id,
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@destination_topic.id,
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notification_level: notification_level,
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notifications_reason_id: TopicUser.notification_reasons[destination_topic.user_id == user_id ? :created_topic : :created_post]
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)
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end
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end
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def add_allowed_users(usernames)
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return unless usernames.present?
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names = usernames.split(',').flatten
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User.where(username: names).find_each do |user|
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destination_topic.topic_allowed_users.build(user_id: user.id) unless destination_topic.topic_allowed_users.where(user_id: user.id).exists?
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end
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destination_topic.save!
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end
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def enqueue_jobs(topic)
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@post_creator.enqueue_jobs if @post_creator
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Jobs.enqueue(
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:delete_inaccessible_notifications,
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topic_id: topic.id
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)
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end
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end
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