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https://github.com/discourse/discourse.git
synced 2024-12-05 11:03:41 +08:00
db15e11cb9
while it is ok to have the check for if the person can delete a topic, for this feature some times you might want some more flexibility. Instead of relying on patching this class and method, it would be better to have a modifier that can be decide if the topic should be deleted after the merge.
716 lines
24 KiB
Ruby
716 lines
24 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, chronological_order: false)
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@move_type = PostMover.move_types[:existing_topic]
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@creating_new_topic = false
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@chronological_order = chronological_order
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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 { move_posts_to topic }
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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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@creating_new_topic = true
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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 =
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Topic.transaction do
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new_topic =
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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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update_topic_excerpt 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 update_topic_excerpt(topic)
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topic.update_excerpt(topic.first_post.excerpt_for_topic)
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end
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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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# when a topic contains some posts after moving posts to another topic we shouldn't close it
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# two types of posts should prevent a topic from closing:
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# 1. regular posts
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# 2. almost all whispers
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# we should only exclude whispers with action_code: 'split_topic'
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# because we use such whispers as a small-action posts when moving posts to the secret message
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# (in this case we don't want everyone to see that posts were moved, that's why we use whispers)
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original_topic_posts_count =
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@original_topic
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.posts
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.where(
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"post_type = ? or (post_type = ? and action_code != 'split_topic')",
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Post.types[:regular],
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Post.types[:whisper],
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)
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.count
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moving_all_posts = original_topic_posts_count == posts.length
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@first_post_number_moved =
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posts.first.is_first_post? ? posts[1]&.post_number : posts.first.post_number
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move_each_post
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handle_moved_references
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create_moderator_post_in_original_topic
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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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update_upload_security_status
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update_bookmarks
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close_topic_and_schedule_deletion if moving_all_posts
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destination_topic.reload
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destination_topic
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end
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def handle_moved_references
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move_incoming_emails
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move_notifications
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update_reply_counts
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update_quotes
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move_first_post_replies
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delete_post_replies
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copy_shifted_post_timings_to_temp
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delete_invalid_post_timings
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copy_shifted_post_timings_from_temp
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move_post_timings
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copy_first_post_timings
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copy_topic_users
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end
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def move_each_post
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if @chronological_order
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move_each_post_chronological
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else
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move_each_post_sequential
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end
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end
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def move_each_post_sequential
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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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@move_map[post.post_number] = offset + max_post_number
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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, new_post_number: @move_map[post.post_number])
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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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end
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def move_each_post_chronological
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destination_posts = destination_topic.ordered_posts.with_deleted
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# drops posts from destination_topic until it finds one that was created after posts.first
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min_created_at = posts.first.created_at
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moved_posts = destination_posts.drop_while { |post| post.created_at <= min_created_at }
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# if no post in destination_topic was created after posts.first it's equal to sequential
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if moved_posts.empty?
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initial_post_number = destination_topic.max_post_number + 1
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else
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initial_post_number = moved_posts.first.post_number
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end
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last_index = 0
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posts.each do |post|
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while last_index < moved_posts.length && moved_posts[last_index].created_at <= post.created_at
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last_index += 1
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end
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moved_posts.insert(last_index, post)
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end
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@post_creator = nil
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@move_map = {}
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@shift_map = {}
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@reply_count = {}
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next_post_number = initial_post_number
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moved_posts.each do |post|
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if post.topic_id == destination_topic.id
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# avoid shifting to a lower post number
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next_post_number = post.post_number if post.post_number > next_post_number
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@shift_map[post.post_number] = next_post_number
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else
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@move_map[post.post_number] = next_post_number
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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) +
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1
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end
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end
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next_post_number += 1
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end
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moved_posts.reverse_each do |post|
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if post.topic_id == destination_topic.id
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metadata = movement_metadata(post, new_post_number: @shift_map[post.post_number])
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new_post = move_same_topic(post)
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else
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metadata = movement_metadata(post, new_post_number: @move_map[post.post_number])
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new_post = post.is_first_post? ? create_first_post(post) : move(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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store_movement(metadata, new_post)
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end
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# change topic owner if there's a new first post
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destination_topic.update_column(:user_id, posts.first.user_id) if initial_post_number == 1
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end
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def create_first_post(post)
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@post_creator =
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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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PostRevision.copy(post, new_post)
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attrs_to_update = {
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reply_count: @reply_count[1] || 0,
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version: post.version,
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public_version: post.public_version,
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}
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if new_post.post_number != @move_map[post.post_number]
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attrs_to_update[:post_number] = @move_map[post.post_number]
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attrs_to_update[:sort_order] = @move_map[post.post_number]
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end
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new_post.update_columns(attrs_to_update)
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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(:first_post_moved, new_post, post)
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DiscourseEvent.trigger(:post_moved, new_post, original_topic.id)
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# we don't want to keep the old topic's OP bookmarked when we are
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# moving it into a new topic
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Bookmark.where(bookmarkable: post).update_all(bookmarkable_id: new_post.id)
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new_post
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end
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def move(post)
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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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baked_version: nil,
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}
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update[:reply_to_user_id] = nil unless @move_map[post.reply_to_post_number]
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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 move_same_topic(post)
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update = {
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post_number: @shift_map[post.post_number],
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sort_order: @shift_map[post.post_number],
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baked_version: nil,
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}
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if @shift_map[post.reply_to_post_number]
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update[:reply_to_post_number] = @shift_map[post.reply_to_post_number]
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end
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post.attributes = update
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post.save(validate: false)
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post
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end
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def movement_metadata(post, new_post_number: nil)
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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: new_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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metadata[:now] = Time.zone.now
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metadata[:created_new_topic] = @creating_new_topic
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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, created_new_topic, created_at, updated_at)
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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, :created_new_topic, :now, :now)
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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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AND mp.old_topic_id <> mp.new_topic_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.where(post_id: old_post.id).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_post_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 update_quotes
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DB.exec <<~SQL
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UPDATE posts p
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SET raw = REPLACE(p.raw,
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', post:' || mp.old_post_number || ', topic:' || mp.old_topic_id,
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', post:' || mp.new_post_number || ', topic:' || mp.new_topic_id),
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baked_version = NULL
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FROM moved_posts mp, quoted_posts qp
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WHERE p.id = qp.post_id AND mp.old_post_id = qp.quoted_post_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
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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_post_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 FROM post_replies pr USING moved_posts mp
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WHERE (SELECT topic_id FROM posts WHERE id = pr.post_id) <>
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(SELECT topic_id FROM posts WHERE id = pr.reply_post_id)
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AND (pr.reply_post_id = mp.old_post_id OR pr.post_id = mp.old_post_id)
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SQL
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end
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def copy_shifted_post_timings_to_temp
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DB.exec("DROP TABLE IF EXISTS temp_post_timings") if Rails.env.test?
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# copy post_timings for shifted posts to a temp table using the new_post_number
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# they'll be copied back after delete_invalid_post_timings makes room for them
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DB.exec <<~SQL
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CREATE TEMPORARY TABLE temp_post_timings ON COMMIT DROP
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AS (
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SELECT pt.topic_id, mp.new_post_number as post_number, pt.user_id, pt.msecs
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FROM post_timings pt
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JOIN moved_posts mp
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ON mp.old_topic_id = pt.topic_id
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AND mp.old_post_number = pt.post_number
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AND mp.old_topic_id = mp.new_topic_id
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)
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SQL
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end
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def copy_shifted_post_timings_from_temp
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DB.exec <<~SQL
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INSERT INTO post_timings (topic_id, user_id, post_number, msecs)
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SELECT topic_id, user_id, post_number, msecs FROM temp_post_timings
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SQL
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end
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def copy_first_post_timings
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DB.exec <<~SQL
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INSERT INTO post_timings (topic_id, user_id, post_number, msecs)
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SELECT mp.new_topic_id, pt.user_id, mp.new_post_number, pt.msecs
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FROM post_timings pt
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JOIN moved_posts mp ON (pt.topic_id = mp.old_topic_id AND pt.post_number = mp.old_post_number)
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WHERE mp.old_post_id <> mp.new_post_id
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ON CONFLICT (topic_id, post_number, user_id) DO UPDATE
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SET msecs = GREATEST(post_timings.msecs, excluded.msecs)
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SQL
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end
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def delete_invalid_post_timings
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DB.exec <<~SQL
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DELETE
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FROM post_timings pt
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USING moved_posts mp
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WHERE pt.topic_id = mp.new_topic_id
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AND pt.post_number = mp.new_post_number
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SQL
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end
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def move_post_timings
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DB.exec <<~SQL
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UPDATE post_timings pt
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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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FROM moved_posts mp
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WHERE pt.topic_id = mp.old_topic_id
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AND pt.post_number = mp.old_post_number
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AND mp.old_post_id = mp.new_post_id
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AND mp.old_topic_id <> mp.new_topic_id
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SQL
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end
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def copy_topic_users
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params = {
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old_topic_id: original_topic.id,
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new_topic_id: destination_topic.id,
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old_highest_post_number: destination_topic.highest_post_number,
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old_highest_staff_post_number: destination_topic.highest_staff_post_number,
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}
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DB.exec(<<~SQL, params)
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INSERT INTO topic_users(user_id, topic_id, posted, last_read_post_number,
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last_emailed_post_number, first_visited_at, last_visited_at, notification_level,
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notifications_changed_at, notifications_reason_id)
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SELECT tu.user_id,
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:new_topic_id AS topic_id,
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EXISTS(
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SELECT 1
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FROM posts p
|
|
WHERE p.topic_id = :new_topic_id
|
|
AND p.user_id = tu.user_id
|
|
LIMIT 1
|
|
) AS posted,
|
|
(
|
|
SELECT MAX(lr.new_post_number)
|
|
FROM moved_posts lr
|
|
WHERE lr.old_topic_id = tu.topic_id
|
|
AND lr.old_post_number <= tu.last_read_post_number
|
|
AND lr.old_topic_id <> lr.new_topic_id
|
|
) AS last_read_post_number,
|
|
(
|
|
SELECT MAX(le.new_post_number)
|
|
FROM moved_posts le
|
|
WHERE le.old_topic_id = tu.topic_id
|
|
AND le.old_post_number <= tu.last_emailed_post_number
|
|
AND le.old_topic_id <> le.new_topic_id
|
|
) AS last_emailed_post_number,
|
|
GREATEST(tu.first_visited_at, t.created_at) AS first_visited_at,
|
|
GREATEST(tu.last_visited_at, t.created_at) AS last_visited_at,
|
|
tu.notification_level,
|
|
tu.notifications_changed_at,
|
|
tu.notifications_reason_id
|
|
FROM topic_users tu
|
|
JOIN topics t ON (t.id = :new_topic_id)
|
|
WHERE tu.topic_id = :old_topic_id
|
|
AND GREATEST(
|
|
tu.last_read_post_number,
|
|
tu.last_emailed_post_number
|
|
) >= (SELECT MIN(mp.old_post_number) FROM moved_posts mp WHERE mp.old_topic_id <> mp.new_topic_id)
|
|
ON CONFLICT (topic_id, user_id) DO UPDATE
|
|
SET posted = excluded.posted,
|
|
last_read_post_number = CASE
|
|
WHEN topic_users.last_read_post_number = :old_highest_staff_post_number OR (
|
|
:old_highest_post_number < :old_highest_staff_post_number
|
|
AND topic_users.last_read_post_number = :old_highest_post_number
|
|
AND NOT EXISTS(SELECT 1
|
|
FROM users u
|
|
WHERE u.id = topic_users.user_id
|
|
AND (admin OR moderator))
|
|
) THEN
|
|
GREATEST(topic_users.last_read_post_number,
|
|
excluded.last_read_post_number)
|
|
ELSE topic_users.last_read_post_number END,
|
|
last_emailed_post_number = CASE
|
|
WHEN topic_users.last_emailed_post_number = :old_highest_staff_post_number OR (
|
|
:old_highest_post_number < :old_highest_staff_post_number
|
|
AND topic_users.last_emailed_post_number = :old_highest_post_number
|
|
AND NOT EXISTS(SELECT 1
|
|
FROM users u
|
|
WHERE u.id = topic_users.user_id
|
|
AND (admin OR moderator))
|
|
) THEN
|
|
GREATEST(topic_users.last_emailed_post_number,
|
|
excluded.last_emailed_post_number)
|
|
ELSE topic_users.last_emailed_post_number END,
|
|
first_visited_at = LEAST(topic_users.first_visited_at, excluded.first_visited_at),
|
|
last_visited_at = GREATEST(topic_users.last_visited_at, excluded.last_visited_at)
|
|
SQL
|
|
end
|
|
|
|
def update_statistics
|
|
destination_topic.update_statistics
|
|
original_topic.update_statistics
|
|
TopicUser.update_post_action_cache(
|
|
topic_id: [original_topic.id, destination_topic.id],
|
|
post_id: @post_ids,
|
|
)
|
|
end
|
|
|
|
def update_user_actions
|
|
UserAction.synchronize_target_topic_ids(posts.map(&:id))
|
|
end
|
|
|
|
def create_moderator_post_in_original_topic
|
|
move_type_str = PostMover.move_types[@move_type].to_s
|
|
move_type_str.sub!("topic", "message") if @move_to_pm
|
|
|
|
message =
|
|
I18n.with_locale(SiteSetting.default_locale) do
|
|
I18n.t(
|
|
"move_posts.#{move_type_str}_moderator_post",
|
|
count: posts.length,
|
|
topic_link:
|
|
(
|
|
if posts.first.is_first_post?
|
|
"[#{destination_topic.title}](#{destination_topic.relative_url})"
|
|
else
|
|
"[#{destination_topic.title}](#{posts.first.relative_url})"
|
|
end
|
|
),
|
|
)
|
|
end
|
|
|
|
post_type = @move_to_pm ? Post.types[:whisper] : Post.types[:small_action]
|
|
original_topic.add_moderator_post(
|
|
user,
|
|
message,
|
|
post_type: post_type,
|
|
action_code: "split_topic",
|
|
post_number: @first_post_number_moved,
|
|
)
|
|
end
|
|
|
|
def posts
|
|
@posts ||=
|
|
begin
|
|
Post
|
|
.where(topic: @original_topic, id: post_ids)
|
|
.where.not(post_type: Post.types[:small_action])
|
|
.where.not(raw: "")
|
|
.order(:created_at)
|
|
.tap { |posts| raise Discourse::InvalidParameters.new(:post_ids) if posts.empty? }
|
|
end
|
|
end
|
|
|
|
def update_last_post_stats
|
|
post = destination_topic.ordered_posts.where.not(post_type: Post.types[:whisper]).last
|
|
if post && post_ids.include?(post.id)
|
|
attrs = {}
|
|
attrs[:last_posted_at] = post.created_at
|
|
attrs[:last_post_user_id] = post.user_id
|
|
attrs[:bumped_at] = Time.now
|
|
attrs[:updated_at] = Time.now
|
|
destination_topic.update_columns(attrs)
|
|
end
|
|
end
|
|
|
|
def update_upload_security_status
|
|
DB.after_commit { Jobs.enqueue(:update_topic_upload_security, topic_id: @destination_topic.id) }
|
|
end
|
|
|
|
def update_bookmarks
|
|
DB.after_commit do
|
|
Jobs.enqueue(:sync_topic_user_bookmarked, topic_id: @original_topic.id)
|
|
Jobs.enqueue(:sync_topic_user_bookmarked, topic_id: @destination_topic.id)
|
|
end
|
|
end
|
|
|
|
def watch_new_topic
|
|
if @destination_topic.archetype == Archetype.private_message
|
|
if @original_topic.archetype == Archetype.private_message
|
|
notification_levels =
|
|
TopicUser
|
|
.where(topic_id: @original_topic.id, user_id: posts.pluck(:user_id))
|
|
.pluck(:user_id, :notification_level)
|
|
.to_h
|
|
else
|
|
notification_levels =
|
|
posts
|
|
.pluck(:user_id)
|
|
.uniq
|
|
.map { |user_id| [user_id, TopicUser.notification_levels[:watching]] }
|
|
.to_h
|
|
end
|
|
else
|
|
notification_levels = [[@destination_topic.user_id, TopicUser.notification_levels[:watching]]]
|
|
end
|
|
|
|
notification_levels.each do |user_id, notification_level|
|
|
TopicUser.change(
|
|
user_id,
|
|
@destination_topic.id,
|
|
notification_level: notification_level,
|
|
notifications_reason_id:
|
|
TopicUser.notification_reasons[
|
|
destination_topic.user_id == user_id ? :created_topic : :created_post
|
|
],
|
|
)
|
|
end
|
|
end
|
|
|
|
def add_allowed_users(usernames)
|
|
return if usernames.blank?
|
|
|
|
names = usernames.split(",").flatten
|
|
User
|
|
.where(username: names)
|
|
.find_each do |user|
|
|
unless destination_topic.topic_allowed_users.where(user_id: user.id).exists?
|
|
destination_topic.topic_allowed_users.build(user_id: user.id)
|
|
end
|
|
end
|
|
destination_topic.save!
|
|
end
|
|
|
|
def enqueue_jobs(topic)
|
|
@post_creator.enqueue_jobs if @post_creator
|
|
|
|
Jobs.enqueue(:notify_moved_posts, post_ids: post_ids, moved_by_id: user.id)
|
|
|
|
Jobs.enqueue(:delete_inaccessible_notifications, topic_id: topic.id)
|
|
end
|
|
|
|
def close_topic_and_schedule_deletion
|
|
@original_topic.update_status("closed", true, @user)
|
|
|
|
days_to_deleting = SiteSetting.delete_merged_stub_topics_after_days
|
|
if days_to_deleting == 0
|
|
is_allowed_to_delete_after_merge =
|
|
DiscoursePluginRegistry.apply_modifier(
|
|
:is_allowed_to_delete_after_merge,
|
|
Guardian.new(@user).can_delete?(@original_topic),
|
|
@original_topic,
|
|
@user,
|
|
)
|
|
if is_allowed_to_delete_after_merge
|
|
first_post = @original_topic.ordered_posts.first
|
|
|
|
PostDestroyer.new(
|
|
@user,
|
|
first_post,
|
|
context: I18n.t("topic_statuses.auto_deleted_by_merge"),
|
|
).destroy
|
|
|
|
@original_topic.trash!(Discourse.system_user)
|
|
end
|
|
elsif days_to_deleting > 0
|
|
@original_topic.set_or_create_timer(
|
|
TopicTimer.types[:delete],
|
|
days_to_deleting * 24,
|
|
by_user: @user,
|
|
)
|
|
end
|
|
end
|
|
end
|