96 lines
3.0 KiB
Ruby
96 lines
3.0 KiB
Ruby
# frozen_string_literal: true
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class QuotedPost < ActiveRecord::Base
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belongs_to :post
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belongs_to :quoted_post, class_name: 'Post'
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# NOTE we already have a path that does this for topic links,
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# however topic links exclude quotes and links within a topic
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# we are double parsing this fragment, this may be worth optimising later
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def self.extract_from(post)
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doc = Nokogiri::HTML5.fragment(post.cooked)
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uniq = {}
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doc.css("aside.quote[data-topic]").each do |a|
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topic_id = a['data-topic'].to_i
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post_number = a['data-post'].to_i
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next if topic_id == 0 || post_number == 0
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next if uniq[[topic_id, post_number]]
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next if post.topic_id == topic_id && post.post_number == post_number
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uniq[[topic_id, post_number]] = true
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end
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if uniq.length == 0
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DB.exec("DELETE FROM quoted_posts WHERE post_id = :post_id", post_id: post.id)
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else
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args = {
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post_id: post.id,
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topic_ids: uniq.keys.map(&:first),
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post_numbers: uniq.keys.map(&:second)
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}
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DB.exec(<<~SQL, args)
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INSERT INTO quoted_posts (post_id, quoted_post_id, created_at, updated_at)
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SELECT :post_id, p.id, current_timestamp, current_timestamp
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FROM posts p
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JOIN (
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SELECT
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unnest(ARRAY[:topic_ids]) topic_id,
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unnest(ARRAY[:post_numbers]) post_number
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) X ON X.topic_id = p.topic_id AND X.post_number = p.post_number
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LEFT JOIN quoted_posts q on q.post_id = :post_id AND q.quoted_post_id = p.id
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WHERE q.id IS NULL
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SQL
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DB.exec(<<~SQL, args)
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DELETE FROM quoted_posts
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WHERE post_id = :post_id
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AND id IN (
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SELECT q1.id FROM quoted_posts q1
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LEFT JOIN posts p1 ON p1.id = q1.quoted_post_id
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LEFT JOIN (
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SELECT
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unnest(ARRAY[:topic_ids]) topic_id,
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unnest(ARRAY[:post_numbers]) post_number
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) X on X.topic_id = p1.topic_id AND X.post_number = p1.post_number
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WHERE q1.post_id = :post_id AND X.topic_id IS NULL
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)
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SQL
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end
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# simplest place to add this code
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reply_quoted = false
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if post.reply_to_post_number
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reply_post_id = Post.where(topic_id: post.topic_id, post_number: post.reply_to_post_number).pluck_first(:id)
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reply_quoted = reply_post_id.present? && QuotedPost.where(post_id: post.id, quoted_post_id: reply_post_id).count > 0
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end
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if reply_quoted != post.reply_quoted
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post.update_columns(reply_quoted: reply_quoted)
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end
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end
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end
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# == Schema Information
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#
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# Table name: quoted_posts
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#
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# id :integer not null, primary key
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# post_id :integer not null
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# quoted_post_id :integer not null
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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# Indexes
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#
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# index_quoted_posts_on_post_id_and_quoted_post_id (post_id,quoted_post_id) UNIQUE
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# index_quoted_posts_on_quoted_post_id_and_post_id (quoted_post_id,post_id) UNIQUE
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#
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