1040 lines
29 KiB
Ruby
1040 lines
29 KiB
Ruby
# typed: false
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class Story < ApplicationRecord
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belongs_to :user
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belongs_to :domain, optional: true
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belongs_to :merged_into_story,
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class_name: "Story",
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foreign_key: "merged_story_id",
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inverse_of: :merged_stories,
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optional: true
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has_many :merged_stories,
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class_name: "Story",
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foreign_key: "merged_story_id",
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inverse_of: :merged_into_story,
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dependent: :nullify
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has_many :taggings,
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autosave: true,
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dependent: :destroy
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has_many :suggested_taggings, dependent: :destroy
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has_many :suggested_titles, dependent: :destroy
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has_many :suggested_tagging_times,
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-> { group(:tag_id).select("count(*) as times, tag_id").order("times desc") },
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class_name: "SuggestedTagging",
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inverse_of: :story
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has_many :suggested_title_times,
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-> { group(:title).select("count(*) as times, title").order("times desc") },
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class_name: "SuggestedTitle",
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inverse_of: :story
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has_many :comments,
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inverse_of: :story,
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dependent: :destroy
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has_many :tags, -> { order("tags.is_media desc, tags.tag") }, through: :taggings
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has_many :votes, -> { where(comment_id: nil) }, inverse_of: :story
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has_many :voters, -> { where("votes.comment_id" => nil) },
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through: :votes,
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source: :user
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has_many :hidings, class_name: "HiddenStory", inverse_of: :story, dependent: :destroy
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has_many :savings, class_name: "SavedStory", inverse_of: :story, dependent: :destroy
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has_one :story_text, foreign_key: :id, dependent: :destroy, inverse_of: :story
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scope :base, ->(user) { includes(:tags).not_deleted(user).unmerged.mod_preload?(user) }
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scope :for_presentation, -> {
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includes(:domain, :user, taggings: :tag)
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}
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scope :mod_preload?, ->(user) {
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user.try(:is_moderator?) ? preload(:suggested_taggings, :suggested_titles) : all
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}
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scope :deleted, -> { where(is_deleted: true) }
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scope :not_deleted, ->(user) {
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user.try(:is_moderator?) ? all : where("is_deleted = false or stories.user_id = ?", user.try(:id).to_i)
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}
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scope :unmerged, -> { where(merged_story_id: nil) }
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scope :positive_ranked, -> { where("score >= 0") }
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scope :low_scoring, ->(max = 5) { where("score < ?", max) }
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scope :front_page, -> { hottest.limit(StoriesPaginator::STORIES_PER_PAGE) }
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scope :hottest, ->(user = nil, exclude_tags = nil) {
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base(user).not_hidden_by(user)
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.filter_tags(exclude_tags || [])
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.positive_ranked
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.order("hotness")
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}
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scope :recent, ->(user = nil, exclude_tags = nil) {
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base(user).not_hidden_by(user)
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.filter_tags(exclude_tags || [])
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.low_scoring
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.where("created_at >= ?", 10.days.ago)
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.where.not(id: front_page.ids)
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.order("stories.created_at DESC")
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}
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scope :filter_tags, ->(tags) {
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tags.empty? ? all : where(
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Story.arel_table[:id].not_in(
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Tagging.where(tag_id: tags).select(:story_id).arel
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)
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)
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}
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scope :filter_tags_for, ->(user) {
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user.nil? ? all : where(
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Story.arel_table[:id].not_in(
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Tagging.joins(tag: :tag_filters)
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.where(tag_filters: {user_id: user})
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.select(:story_id).arel
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)
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)
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}
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scope :hidden_by, ->(user) {
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user.nil? ? none : joins(:hidings).merge(HiddenStory.by(user))
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}
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scope :not_hidden_by, ->(user) {
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user.nil? ? all : where.not(
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HiddenStory.select("TRUE")
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.where(Arel.sql("hidden_stories.story_id = stories.id"))
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.by(user)
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.arel
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.exists
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)
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}
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scope :saved_by, ->(user) {
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user.nil? ? none : joins(:savings).merge(SavedStory.by(user))
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}
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scope :to_tweet, -> {
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hottest(nil, Tag.where(tag: "meta").ids)
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.where(twitter_id: nil)
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.where("score >= 2")
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.where("created_at >= ?", 2.days.ago)
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.limit(10)
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}
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validates :title, length: {in: 3..150}
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validates :description, length: {maximum: (64 * 1024)}
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validates :url, length: {maximum: 250, allow_nil: true}
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validates :short_id, presence: true, length: {maximum: 6}
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validates :markeddown_description, length: {maximum: 16_777_215, allow_nil: true}
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validates :twitter_id, length: {maximum: 20, allow_nil: true}
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validates_each :merged_story_id do |record, _attr, value|
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if value.to_i == record.id
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record.errors.add(:merge_story_short_id, "id cannot be itself.")
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end
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end
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COMMENTABLE_DAYS = 90
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FLAGGABLE_DAYS = 14
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# the lowest a score can go
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FLAGGABLE_MIN_SCORE = -5
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# after this many minutes old, a story cannot be edited
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MAX_EDIT_MINS = (60 * 6)
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# days a story is considered recent, for resubmitting
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RECENT_DAYS = 30
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# users needed to make similar suggestions go live
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SUGGESTION_QUORUM = 2
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# let a hot story linger for this many seconds
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HOTNESS_WINDOW = 60 * 60 * 22
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# drop these words from titles when making URLs
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TITLE_DROP_WORDS = ["", "a", "an", "and", "but", "in", "of", "or", "that", "the", "to"].freeze
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# URI.parse is not very lenient, so we can't use it
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URL_RE = /\A(?<protocol>https?):\/\/(?<domain>(?:[^\.\/]+\.)+[a-z\-]+)(?<port>:\d+)?(?:\/|\z)/i
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# Dingbats, emoji, and other graphics https://www.unicode.org/charts/
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GRAPHICS_RE = /[\u{0000}-\u{001F}\u{2190}\u{2192}-\u{27BF}\u{1F000}-\u{1F9FF}]/
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attr_accessor :current_vote, :editing_from_suggestions, :editor, :fetching_ip,
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:is_hidden_by_cur_user, :latest_comment_id,
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:is_saved_by_cur_user, :moderation_reason, :previewing,
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:seen_previous
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attr_writer :fetched_response
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before_validation :assign_short_id_and_score, on: :create
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before_save :log_moderation
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before_save :fix_bogus_chars
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before_create :assign_initial_hotness
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after_create :mark_submitter, :record_initial_upvote
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after_save :update_cached_columns, :update_story_text
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validate do
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if url.present?
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already_posted_recently?
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check_not_tracking_domain
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check_not_new_domain_from_new_user
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errors.add(:url, "is not valid") unless url.match(URL_RE)
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elsif description.to_s.strip == ""
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errors.add(:description, "must contain text if no URL posted")
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end
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if title.starts_with?("Ask") && tags_a.include?("ask")
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errors.add(:title, " starting 'Ask #{Rails.application.name}' or similar is redundant " \
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"with the ask tag.")
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end
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if title.match(GRAPHICS_RE)
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errors.add(:title, " may not contain graphic codepoints")
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end
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if !errors.any? && url.blank?
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self.user_is_author = true
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end
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check_tags
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end
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def accepting_comments?
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!is_gone? &&
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!previewing &&
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(new_record? || created_at.after?(COMMENTABLE_DAYS.days.ago))
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end
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def already_posted_recently?
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return false unless url.present? && new_record?
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if most_recent_similar&.is_recent?
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errors.add(:url, "has already been submitted within the past #{RECENT_DAYS} days")
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true
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elsif most_recent_similar && user&.is_new?
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errors.add(:url, "cannot be resubmitted by new users")
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true
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else
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false
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end
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end
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def check_not_new_domain_from_new_user
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return unless url.present? && new_record? && domain
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if user&.is_new? && domain.stories.not_deleted(nil).count == 0
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ModNote.tattle_on_story_domain!(self, "new user with new")
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errors.add :url, <<-EXPLANATION
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is an unseen domain from a new user. We restrict this to discourage
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self-promotion and give you time to learn about topicality. Skirting
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this with a URL shortener or tweet or something will probably earn a ban.
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EXPLANATION
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end
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end
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def check_not_tracking_domain
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return unless url.present? && new_record? && domain
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if domain.banned?
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ModNote.tattle_on_story_domain!(self, "banned")
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errors.add(:url, "is from banned domain #{domain.domain}: #{domain.banned_reason}")
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end
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end
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# current_vote is the vote loaded for the currently-viewing user
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def current_flagged?
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current_vote.try(:[], :vote) == -1
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end
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def current_upvoted?
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current_vote.try(:[], :vote) == 1
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end
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# all stories with similar urls
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def self.find_similar_by_url(url)
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# if a previous submission was moderated, return it to block it from being
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# submitted again
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Story.where(normalized_url: Utils.normalize_url(url))
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.where("is_deleted = ? OR is_moderated = ?", false, true)
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end
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# doesn't include deleted/moderated/merged stories
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def similar_stories
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return Story.none if url.blank?
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@_similar_stories ||= Story.find_similar_by_url(url).order("id DESC")
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# do not include this story itself or any story merged into it
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if id?
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@_similar_stories = @_similar_stories.where.not(id: id)
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.where("merged_story_id is null or merged_story_id != ?", id)
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end
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# do not include the story this one is merged into
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if merged_story_id?
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@_similar_stories = @_similar_stories.where.not(id: merged_story_id)
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end
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@_similar_stories
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end
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def public_similar_stories(user)
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@_public_similar_stories ||= similar_stories.base(user)
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end
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def most_recent_similar
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similar_stories.first
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end
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def self.recalculate_all_hotnesses!
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# do the front page first, since find_each can't take an order
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Story.order("id DESC").limit(100).each(&:update_cached_columns)
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Story.find_each(&:update_cached_columns)
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true
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end
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def archiveorg_url
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# This will redirect to the latest version they have
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"https://web.archive.org/web/3/#{CGI.escape(url)}"
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end
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def archivetoday_url
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"https://archive.today/#{CGI.escape(url)}"
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end
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def ghost_url
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"https://ghostarchive.org/search?term=#{CGI.escape(url)}"
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end
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def as_json(options = {})
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h = [
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:short_id,
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:short_id_url,
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:created_at,
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:title,
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:url,
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:score,
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:score,
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:flags,
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{comment_count: :comments_count},
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{description: :markeddown_description},
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{description_plain: :description},
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:comments_url,
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{submitter_user: :user},
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:user_is_author,
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{tags: tags.map(&:tag).sort}
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]
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if options && options[:with_comments]
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h.push(comments: options[:with_comments])
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end
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js = {}
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h.each do |k|
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if k.is_a?(Symbol)
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js[k] = send(k)
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elsif k.is_a?(Hash)
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js[k.keys.first] = if k.values.first.is_a?(Symbol)
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send(k.values.first)
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else
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k.values.first
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end
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end
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end
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js
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end
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def assign_initial_hotness
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self.hotness = calculated_hotness
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end
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def assign_short_id_and_score
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self.short_id = ShortId.new(self.class).generate
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self.score ||= 1 # tests are allowed to fake out the score
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end
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def calculated_hotness
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# take each tag's hotness modifier into effect, and give a slight bump to
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# stories submitted by the author
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base = tags.sum(:hotness_mod) + ((user_is_author? && url.present?) ? 0.25 : 0.0)
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# give a story's comment votes some weight, ignoring submitter's comments
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sum_expression = (base < 0) ? "comments.flags * -0.5" : "comments.score + 1"
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cpoints = merged_comments.where.not(user_id: user_id).sum(sum_expression).to_f * 0.5
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# mix in any stories this one cannibalized
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cpoints += merged_stories.map(&:score).inject(&:+).to_f
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# if a story has many comments but few votes, it's probably a bad story, so
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# cap the comment points at the number of upvotes
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upvotes = self.score + flags
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if cpoints > upvotes
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cpoints = upvotes
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end
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# don't immediately kill stories at 0 by bumping up score by one
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order = Math.log([(score + 1).abs + cpoints, 1].max, 10)
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sign = if score > 0
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1
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elsif score < 0
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-1
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else
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0
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end
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-((order * sign) + base +
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((created_at || Time.current).to_f / HOTNESS_WINDOW)).round(7)
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end
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def can_be_seen_by_user?(user)
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!is_gone? || (user && (user.is_moderator? || user.id == user_id))
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end
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def can_have_images?
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# doesn't test self.editor so a user can't trick a mod into editing a
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# story to enable an image
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user.try(:is_moderator?)
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end
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def can_have_suggestions_from_user?(user)
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if !user || (user.id == user_id) || !user.can_offer_suggestions?
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return false
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end
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return false if is_moderated?
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tags.each { |t| return false if t.privileged? }
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true
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end
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# this has to happen just before save rather than in tags_a= because we need
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# to have a valid user_id; remember it fills .taggings, not .tags
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def check_tags
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u = editor || user
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if u&.is_new? &&
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(unpermitted = taggings.filter { |t| !t.tag.permit_by_new_users? }).any?
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tags = unpermitted.map { |t| t.tag.tag }.to_sentence
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errors.add :base, <<-EXPLANATION
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New users can't submit stories with the tag(s) #{tags}
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because they're for meta discussion or prone to off-topic stories.
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If a tag is appropriate for the story, leaving it off to skirt this
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restriction can earn a ban.
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EXPLANATION
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ModNote.tattle_on_new_user_tagging!(self)
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return
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end
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taggings.each do |t|
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if !t.tag.valid_for?(u)
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raise "#{u.username} does not have permission to use privileged tag #{t.tag.tag}"
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elsif !t.tag.active? && t.new_record? && !t.marked_for_destruction?
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# stories can have inactive tags as long as they existed before
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raise "#{u.username} cannot add inactive tag #{t.tag.tag}"
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end
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end
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if taggings.reject { |t| t.marked_for_destruction? || t.tag.is_media? }.empty?
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errors.add(:base, "Must have at least one non-media (PDF, video) " \
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"tag. If no tags apply to your content, it probably doesn't " \
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"belong here.")
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end
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end
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def comments_path
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"#{short_id_path}/#{title_as_url}"
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end
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def comments_url
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"#{short_id_url}/#{title_as_url}"
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end
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def description=(desc)
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self[:description] = desc.to_s.rstrip
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self.markeddown_description = generated_markeddown_description
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end
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def description_or_story_text(chars = 0)
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s = if description.present?
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markeddown_description.gsub(/<[^>]*>/, "")
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else
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story_text&.body
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end
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if chars > 0 && s.to_s.length > chars
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# remove last truncated word
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s = s.to_s[0, chars].gsub(/ [^ ]*\z/, "")
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end
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HTMLEntities.new.decode(s.to_s)
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end
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def domain_search_url
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"/search?order=newest&q=domain:#{domain}"
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end
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def fix_bogus_chars
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# this is needlessly complicated to work around character encoding issues
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# that arise when doing just self.title.to_s.gsub(160.chr, "")
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self.title = title.to_s.chars.map { |chr|
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if chr.ord == 160
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" "
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else
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chr
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end
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}.join("")
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true
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end
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def generated_markeddown_description
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Markdowner.to_html(description, allow_images: can_have_images?)
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end
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# TODO: race condition: if two votes arrive at the same time, the second one
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# won't take the first's score change into effect for calculated_hotness
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def update_score_and_recalculate!(score_delta, flag_delta)
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self.score += score_delta
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self.flags += flag_delta
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Story.connection.execute <<~SQL
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UPDATE stories SET
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score = (select coalesce(sum(vote), 0) from votes where story_id = stories.id and comment_id is null),
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flags = (select count(*) from votes where story_id = stories.id and comment_id is null and vote = -1),
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hotness = #{calculated_hotness}
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WHERE id = #{id.to_i}
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SQL
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end
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def has_suggestions?
|
|
suggested_taggings.any? || suggested_titles.any?
|
|
end
|
|
|
|
def hider_count
|
|
@hider_count ||= HiddenStory.where(story_id: id).count
|
|
end
|
|
|
|
def is_flaggable?
|
|
if created_at && self.score > FLAGGABLE_MIN_SCORE
|
|
Time.current - created_at <= FLAGGABLE_DAYS.days
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def is_editable_by_user?(user)
|
|
if user&.is_moderator?
|
|
true
|
|
elsif user && user.id == user_id
|
|
if is_moderated?
|
|
false
|
|
else
|
|
(Time.current.to_i - created_at.to_i < (60 * MAX_EDIT_MINS))
|
|
end
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def is_gone?
|
|
is_deleted? || (user.is_banned? && score < 0)
|
|
end
|
|
|
|
def is_hidden_by_user?(user)
|
|
!!HiddenStory.find_by(user_id: user.id, story_id: id)
|
|
end
|
|
|
|
def is_recent?
|
|
created_at >= RECENT_DAYS.days.ago
|
|
end
|
|
|
|
def is_saved_by_user?(user)
|
|
!!SavedStory.find_by(user_id: user.id, story_id: id)
|
|
end
|
|
|
|
def is_unavailable
|
|
!unavailable_at.nil?
|
|
end
|
|
|
|
def is_unavailable=(what)
|
|
self.unavailable_at = ((what.to_i == 1 && !is_unavailable) ? Time.current : nil)
|
|
end
|
|
|
|
def is_undeletable_by_user?(user)
|
|
if user&.is_moderator?
|
|
true
|
|
elsif user && user.id == user_id && !is_moderated?
|
|
true
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def log_moderation
|
|
if new_record? ||
|
|
(!editing_from_suggestions && (!editor || editor.id == user_id))
|
|
return
|
|
end
|
|
|
|
all_changes = changes.merge(tagging_changes)
|
|
all_changes.delete("normalized_url")
|
|
all_changes.delete("unavailable_at")
|
|
|
|
if !all_changes.any?
|
|
return
|
|
end
|
|
|
|
m = Moderation.new
|
|
if editing_from_suggestions
|
|
m.is_from_suggestions = true
|
|
else
|
|
m.moderator_user_id = editor.try(:id)
|
|
end
|
|
m.story_id = id
|
|
|
|
m.action = all_changes.map { |k, v|
|
|
if k == "is_deleted" && is_deleted?
|
|
"deleted story"
|
|
elsif k == "is_deleted" && !is_deleted?
|
|
"undeleted story"
|
|
elsif k == "merged_story_id"
|
|
if v[1]
|
|
"merged into #{merged_into_story.short_id} " \
|
|
"(#{merged_into_story.title})"
|
|
else
|
|
"unmerged from another story"
|
|
end
|
|
else
|
|
"changed #{k} from #{v[0].inspect} to #{v[1].inspect}"
|
|
end
|
|
}.join(", ")
|
|
|
|
m.reason = moderation_reason
|
|
m.save!
|
|
|
|
self.is_moderated = true
|
|
end
|
|
|
|
def mailing_list_message_id
|
|
"story.#{short_id}.#{created_at.to_i}@#{Rails.application.domain}"
|
|
end
|
|
|
|
def mark_submitter
|
|
Keystore.increment_value_for("user:#{user_id}:stories_submitted")
|
|
end
|
|
|
|
# unordered, use Comment.thread_sorted_comments for presenting threads
|
|
def merged_comments
|
|
return Comment.none unless id # unsaved Stories have no comments
|
|
|
|
Comment.joins(:story)
|
|
.where(story: {merged_story_id: id})
|
|
.or(Comment.where(story_id: id))
|
|
end
|
|
|
|
def merge_story_short_id=(sid)
|
|
self.merged_story_id = sid.present? ? Story.where(short_id: sid).pick(:id) : nil
|
|
end
|
|
|
|
def merge_story_short_id
|
|
merged_story_id ? merged_into_story.try(:short_id) : nil
|
|
end
|
|
|
|
def record_initial_upvote
|
|
Vote.vote_thusly_on_story_or_comment_for_user_because(1, id, nil, user_id, nil, false)
|
|
end
|
|
|
|
def short_id_path
|
|
Rails.application.routes.url_helpers.root_path + "s/#{short_id}"
|
|
end
|
|
|
|
def short_id_url
|
|
Rails.application.root_url + "s/#{short_id}"
|
|
end
|
|
|
|
def show_score_to_user?(u)
|
|
u&.is_moderator? || !current_flagged?
|
|
end
|
|
|
|
def tagging_changes
|
|
old_tags_a = taggings.reject(&:new_record?).map { |tg| tg.tag.tag }.join(" ")
|
|
new_tags_a = taggings.reject(&:marked_for_destruction?).map { |tg| tg.tag.tag }.join(" ")
|
|
|
|
if old_tags_a == new_tags_a
|
|
{}
|
|
else
|
|
{"tags" => [old_tags_a, new_tags_a]}
|
|
end
|
|
end
|
|
|
|
def tags_a
|
|
@_tags_a ||= taggings.reject(&:marked_for_destruction?).map { |t| t.tag.tag }
|
|
end
|
|
|
|
def tags_a=(new_tag_names_a)
|
|
taggings.each do |tagging|
|
|
if !new_tag_names_a.include?(tagging.tag.tag)
|
|
tagging.mark_for_destruction
|
|
end
|
|
end
|
|
|
|
new_tag_names_a.uniq.each do |tag_name|
|
|
if tag_name.to_s != "" && !tags.exists?(tag: tag_name)
|
|
if (t = Tag.active.find_by(tag: tag_name))
|
|
# we can't lookup whether the user is allowed to use this tag yet
|
|
# because we aren't assured to have a user_id by now; we'll do it in
|
|
# the validation with check_tags
|
|
taggings.build(tag_id: t.id)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def save_suggested_tags_a_for_user!(new_tag_names_a, user)
|
|
st = suggested_taggings.where(user_id: user.id)
|
|
|
|
st.each do |tagging|
|
|
if !new_tag_names_a.include?(tagging.tag.tag)
|
|
tagging.destroy!
|
|
end
|
|
end
|
|
|
|
st.reload
|
|
|
|
new_tag_names_a.each do |tag_name|
|
|
# XXX: AR bug? st.exists?(:tag => tag_name) does not work
|
|
if tag_name.to_s != "" && !st.map { |x| x.tag.tag }.include?(tag_name)
|
|
if (t = Tag.active.find_by(tag: tag_name)) &&
|
|
t.valid_for?(user)
|
|
tg = suggested_taggings.build
|
|
tg.user_id = user.id
|
|
tg.tag_id = t.id
|
|
tg.save!
|
|
|
|
st.reload
|
|
else
|
|
next
|
|
end
|
|
end
|
|
end
|
|
|
|
# if enough users voted on the same set of replacement tags, do it
|
|
tag_votes = {}
|
|
suggested_taggings.group_by(&:user_id).each do |_u, stg|
|
|
stg.each do |s|
|
|
tag_votes[s.tag.tag] ||= 0
|
|
tag_votes[s.tag.tag] += 1
|
|
end
|
|
end
|
|
|
|
final_tags = []
|
|
tag_votes.each do |k, v|
|
|
if v >= SUGGESTION_QUORUM
|
|
final_tags.push k
|
|
end
|
|
end
|
|
|
|
if final_tags.any? && (final_tags.sort != tags_a.sort)
|
|
Rails.logger.info "[s#{id}] promoting suggested tags " \
|
|
"#{final_tags.inspect} instead of #{tags_a.inspect}"
|
|
self.editor = nil
|
|
self.editing_from_suggestions = true
|
|
self.moderation_reason = "Automatically changed from user suggestions"
|
|
self.tags_a = final_tags.sort
|
|
if !save
|
|
Rails.logger.error "[s#{id}] failed auto promoting: " <<
|
|
errors.inspect
|
|
end
|
|
end
|
|
end
|
|
|
|
def save_suggested_title_for_user!(title, user)
|
|
st = suggested_titles.find_by(user_id: user.id)
|
|
if !st
|
|
st = suggested_titles.build
|
|
st.user_id = user.id
|
|
end
|
|
st.title = title
|
|
st.save!
|
|
|
|
# if enough users voted on the same exact title, save it
|
|
title_votes = {}
|
|
suggested_titles.each do |s|
|
|
title_votes[s.title] ||= 0
|
|
title_votes[s.title] += 1
|
|
end
|
|
|
|
title_votes.sort_by { |_k, v| v }.reverse_each do |kv|
|
|
if kv[1] >= SUGGESTION_QUORUM
|
|
Rails.logger.info "[s#{id}] promoting suggested title " \
|
|
"#{kv[0].inspect} instead of #{self.title.inspect}"
|
|
self.editor = nil
|
|
self.editing_from_suggestions = true
|
|
self.moderation_reason = "Automatically changed from user suggestions"
|
|
self.title = kv[0]
|
|
if !save
|
|
Rails.logger.error "[s#{id}] failed auto promoting: " <<
|
|
errors.inspect
|
|
end
|
|
|
|
break
|
|
end
|
|
end
|
|
end
|
|
|
|
def title=(t)
|
|
# change unicode whitespace characters into real spaces
|
|
self[:title] = t.to_s.strip.gsub(/[\.,;:!]*$/, "")
|
|
end
|
|
|
|
def title_as_url
|
|
max_len = 35
|
|
wl = 0
|
|
words = []
|
|
|
|
title
|
|
.parameterize
|
|
.gsub(/[^a-z0-9]/, "_")
|
|
.split("_")
|
|
.reject { |z| TITLE_DROP_WORDS.include?(z) }
|
|
.each do |w|
|
|
if wl + w.length <= max_len
|
|
words.push w
|
|
wl += w.length
|
|
else
|
|
if wl == 0
|
|
words.push w[0, max_len]
|
|
end
|
|
break
|
|
end
|
|
end
|
|
|
|
if words.empty?
|
|
words.push "_"
|
|
end
|
|
|
|
words.join("_").gsub("_-_", "-")
|
|
end
|
|
|
|
def to_param
|
|
short_id
|
|
end
|
|
|
|
def update_availability
|
|
if is_unavailable && !unavailable_at
|
|
self.unavailable_at = Time.current
|
|
elsif unavailable_at && !is_unavailable
|
|
self.unavailable_at = nil
|
|
end
|
|
end
|
|
|
|
def update_cached_columns
|
|
update_column :comments_count, merged_comments.active.count
|
|
merged_into_story&.update_cached_columns
|
|
|
|
update_column :hotness, calculated_hotness
|
|
end
|
|
|
|
def update_story_text
|
|
return unless saved_change_to_attribute?(:title) || saved_change_to_attribute?(:description)
|
|
|
|
# story_text created by cron job, so ignore missing story_text
|
|
story_text.try(:update!, title: title, description: description)
|
|
end
|
|
|
|
# disincentivize content marketers by not appearing to be a source of
|
|
# significant traffic, but do show referrer a few times so authors can find
|
|
# their way back
|
|
def send_referrer?
|
|
created_at && created_at <= 1.hour && merged_story_id.nil?
|
|
end
|
|
|
|
def set_domain(match)
|
|
name = match ? match[:domain].sub(/^www\d*\./, "") : nil
|
|
self.domain = name ? Domain.where(domain: name).first_or_initialize : nil
|
|
end
|
|
|
|
def url=(u)
|
|
super(u.try(:strip)) or return if u.blank?
|
|
|
|
if (match = u.match(URL_RE))
|
|
# remove well-known port for http and https if present
|
|
@url_port = match[:port]
|
|
if match[:protocol] == "http" && match[:port] == ":80" ||
|
|
match[:protocol] == "https" && match[:port] == ":443"
|
|
u = u[0...match.begin(3)] + u[match.end(3)..]
|
|
@url_port = nil
|
|
end
|
|
end
|
|
set_domain(match)
|
|
|
|
# strip out tracking query params
|
|
if (match = u.match(/\A([^\?]+)\?(.+)\z/))
|
|
params = match[2].split(/[&\?]/)
|
|
# utm_ is google and many others; sk is medium
|
|
params.reject! { |p|
|
|
p.match(/^utm_(source|medium|campaign|term|content|referrer)=|^sk=|^gclid=|^fbclid=/x)
|
|
}
|
|
u = match[1] << (params.any? ? "?" << params.join("&") : "")
|
|
end
|
|
|
|
self.normalized_url = Utils.normalize_url(u)
|
|
super(u)
|
|
end
|
|
|
|
def url_is_editable_by_user?(user)
|
|
if new_record?
|
|
true
|
|
else
|
|
user&.is_moderator?
|
|
end
|
|
end
|
|
|
|
def url_or_comments_path
|
|
url.presence || comments_path
|
|
end
|
|
|
|
def url_or_comments_url
|
|
url.presence || comments_url
|
|
end
|
|
|
|
def vote_summary_for(user)
|
|
r_counts = {}
|
|
r_whos = {}
|
|
votes.includes((user && user.is_moderator?) ? :user : nil).find_each do |v|
|
|
next if v.vote == 0
|
|
r_counts[v.reason.to_s] ||= 0
|
|
r_counts[v.reason.to_s] += v.vote
|
|
if user&.is_moderator?
|
|
r_whos[v.reason.to_s] ||= []
|
|
r_whos[v.reason.to_s].push v.user.username
|
|
end
|
|
end
|
|
|
|
r_counts.keys.sort.map { |k|
|
|
if k == ""
|
|
"+#{r_counts[k]}"
|
|
else
|
|
"#{r_counts[k]} " +
|
|
(Vote::ALL_STORY_REASONS[k] || k) +
|
|
((user && user.is_moderator?) ? " (#{r_whos[k].join(", ")})" : "")
|
|
end
|
|
}.join(", ")
|
|
end
|
|
|
|
def fetched_attributes_html
|
|
converted = @fetched_response.body.force_encoding("utf-8")
|
|
parsed = Nokogiri::HTML(converted.to_s)
|
|
|
|
# parse best title from html tags
|
|
# try <meta property="og:title"> first, it probably won't have the site
|
|
# name
|
|
title = ""
|
|
begin
|
|
title = parsed.at_css("meta[property='og:title']")
|
|
.attributes["content"].text
|
|
rescue
|
|
end
|
|
|
|
# then try <meta name="title">
|
|
if title.to_s == ""
|
|
begin
|
|
title = parsed.at_css("meta[name='title']").attributes["content"].text
|
|
rescue
|
|
end
|
|
end
|
|
|
|
# then try plain old <title>
|
|
if title.to_s == ""
|
|
title = parsed.at_css("title").try(:text).to_s
|
|
end
|
|
|
|
# see if the site name is available, so we can strip it out in case it was
|
|
# present in the fetched title
|
|
begin
|
|
site_name = parsed.at_css("meta[property='og:site_name']")
|
|
.attributes["content"].text
|
|
|
|
if site_name.present? &&
|
|
site_name.length < title.length &&
|
|
title[-site_name.length, site_name.length] == site_name
|
|
title = title[0, title.length - site_name.length]
|
|
|
|
# remove title/site name separator
|
|
if / [ \-\|\u2013] $/.match?(title)
|
|
title = title[0, title.length - 3]
|
|
end
|
|
end
|
|
rescue
|
|
end
|
|
|
|
@fetched_attributes[:title] = title
|
|
|
|
# strip off common GitHub site + repo owner
|
|
@fetched_attributes[:title].sub!(/GitHub - [a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}\//i, "")
|
|
|
|
# attempt to get the canonical url if it can be parsed,
|
|
# if it is not the domain root path, and if it
|
|
# responds to GET with a 200-level code
|
|
begin
|
|
cu = canonical_target(parsed)
|
|
@fetched_attributes[:url] = cu if valid_canonical_uri?(cu)
|
|
rescue
|
|
end
|
|
|
|
@fetched_attributes
|
|
end
|
|
|
|
def fetched_attributes_pdf
|
|
return @fetched_attributes = {} if @fetched_response.body.length >= 5.megabytes
|
|
|
|
# pdf-reader only accepts a stream or filename
|
|
pdf_stream = StringIO.new(@fetched_response.body)
|
|
pdf = PDF::Reader.new(pdf_stream)
|
|
|
|
title = pdf.info[:Title]
|
|
|
|
@fetched_attributes[:title] = title
|
|
@fetched_attributes
|
|
end
|
|
|
|
def fetched_attributes
|
|
return @fetched_attributes if @fetched_attributes
|
|
|
|
@fetched_attributes = {
|
|
url: url,
|
|
title: ""
|
|
}
|
|
|
|
# security: do not connect to arbitrary user-submitted ports
|
|
return @fetched_attributes if @url_port
|
|
|
|
begin
|
|
# if we haven't had a test inject a response into us
|
|
if !@fetched_response
|
|
s = Sponge.new
|
|
s.timeout = 3
|
|
# User submitted URLs may have an incorrect https certificate, but we
|
|
# don't want to fail the retrieval for this. Security risk is minimal.
|
|
s.ssl_verify = false
|
|
headers = {
|
|
"User-agent" => "#{Rails.application.domain} for #{fetching_ip}",
|
|
"Referer" => Rails.application.domain
|
|
}
|
|
res = s.fetch(url, :get, nil, nil, headers, 3)
|
|
@fetched_response = res
|
|
end
|
|
|
|
case @fetched_response["content-type"]
|
|
when /pdf/
|
|
fetched_attributes_pdf
|
|
else
|
|
fetched_attributes_html
|
|
end
|
|
rescue
|
|
@fetched_attributes
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def valid_canonical_uri?(url)
|
|
ucu = URI.parse(url)
|
|
new_page = ucu &&
|
|
ucu.scheme.present? &&
|
|
ucu.host.present? &&
|
|
ucu.path != "/"
|
|
|
|
return false unless new_page
|
|
|
|
res = Sponge.new.fetch(url)
|
|
|
|
res.code.to_s =~ /\A2.*\Z/
|
|
end
|
|
|
|
def canonical_target(parsed)
|
|
parsed.at_css("link[rel='canonical']").attributes["href"].text
|
|
end
|
|
end
|