1110 lines
32 KiB
Ruby
1110 lines
32 KiB
Ruby
class Story < ApplicationRecord
|
|
belongs_to :user
|
|
belongs_to :domain, optional: true
|
|
belongs_to :merged_into_story,
|
|
:class_name => "Story",
|
|
:foreign_key => "merged_story_id",
|
|
:inverse_of => :merged_stories,
|
|
:optional => true
|
|
has_many :merged_stories,
|
|
:class_name => "Story",
|
|
:foreign_key => "merged_story_id",
|
|
:inverse_of => :merged_into_story,
|
|
:dependent => :nullify
|
|
has_many :taggings,
|
|
:autosave => true,
|
|
:dependent => :destroy
|
|
has_many :suggested_taggings, :dependent => :destroy
|
|
has_many :suggested_titles, :dependent => :destroy
|
|
has_many :suggested_tagging_times,
|
|
-> { group(:tag_id).select("count(*) as times, tag_id").order('times desc') },
|
|
:class_name => 'SuggestedTagging',
|
|
:inverse_of => :story
|
|
has_many :suggested_title_times,
|
|
-> { group(:title).select("count(*) as times, title").order('times desc') },
|
|
:class_name => 'SuggestedTitle',
|
|
:inverse_of => :story
|
|
has_many :comments,
|
|
:inverse_of => :story,
|
|
:dependent => :destroy
|
|
has_many :tags, -> { order('tags.is_media desc, tags.tag') }, :through => :taggings
|
|
has_many :votes, -> { where(:comment_id => nil) }, :inverse_of => :story
|
|
has_many :voters, -> { where('votes.comment_id' => nil) },
|
|
:through => :votes,
|
|
:source => :user
|
|
has_many :hidings, :class_name => 'HiddenStory', :inverse_of => :story, :dependent => :destroy
|
|
has_many :savings, :class_name => 'SavedStory', :inverse_of => :story, :dependent => :destroy
|
|
has_one :story_text, foreign_key: :id, dependent: :destroy, inverse_of: :story
|
|
|
|
scope :base, ->(user) {
|
|
q = includes(:tags).unmerged
|
|
user && user.is_moderator? ? q.preload(:suggested_taggings, :suggested_titles) : q.not_deleted
|
|
}
|
|
scope :deleted, -> { where(is_deleted: true) }
|
|
scope :not_deleted, -> { where(is_deleted: false) }
|
|
scope :unmerged, -> { where(:merged_story_id => nil) }
|
|
scope :positive_ranked, -> { where("score >= 0") }
|
|
scope :low_scoring, ->(max = 5) { where("score < ?", max) }
|
|
scope :front_page, -> { hottest.limit(StoriesPaginator::STORIES_PER_PAGE) }
|
|
scope :hottest, ->(user = nil, exclude_tags = nil) {
|
|
base(user).not_hidden_by(user)
|
|
.filter_tags(exclude_tags || [])
|
|
.positive_ranked
|
|
.order('hotness')
|
|
}
|
|
scope :recent, ->(user = nil, exclude_tags = nil) {
|
|
base(user).not_hidden_by(user)
|
|
.filter_tags(exclude_tags || [])
|
|
.low_scoring
|
|
.where("created_at >= ?", 10.days.ago)
|
|
.where.not(id: front_page.ids)
|
|
.order("stories.created_at DESC")
|
|
}
|
|
scope :filter_tags, ->(tags) {
|
|
tags.empty? ? all : where(
|
|
Story.arel_table[:id].not_in(
|
|
Tagging.where(tag_id: tags).select(:story_id).arel
|
|
)
|
|
)
|
|
}
|
|
scope :filter_tags_for, ->(user) {
|
|
user.nil? ? all : where(
|
|
Story.arel_table[:id].not_in(
|
|
Tagging.joins(tag: :tag_filters)
|
|
.where(tag_filters: { user_id: user })
|
|
.select(:story_id).arel
|
|
)
|
|
)
|
|
}
|
|
scope :hidden_by, ->(user) {
|
|
user.nil? ? none : joins(:hidings).merge(HiddenStory.by(user))
|
|
}
|
|
scope :not_hidden_by, ->(user) {
|
|
user.nil? ? all : where.not(
|
|
HiddenStory.select('TRUE')
|
|
.where(Arel.sql('hidden_stories.story_id = stories.id'))
|
|
.by(user)
|
|
.arel
|
|
.exists
|
|
)
|
|
}
|
|
scope :saved_by, ->(user) {
|
|
user.nil? ? none : joins(:savings).merge(SavedStory.by(user))
|
|
}
|
|
scope :to_tweet, -> {
|
|
hottest(nil, Tag.where(tag: 'meta').pluck(:id))
|
|
.where(twitter_id: nil)
|
|
.where("score >= 2")
|
|
.where("created_at >= ?", 2.days.ago)
|
|
.limit(10)
|
|
}
|
|
|
|
validates :title, length: { :in => 3..150 }
|
|
validates :description, length: { :maximum => (64 * 1024) }
|
|
validates :url, length: { :maximum => 250, :allow_nil => true }
|
|
validates :short_id, presence: true, length: { :maximum => 6 }
|
|
validates :markeddown_description, length: { :maximum => 16_777_215, :allow_nil => true }
|
|
validates :twitter_id, length: { :maximum => 20, :allow_nil => true }
|
|
|
|
validates_each :merged_story_id do |record, _attr, value|
|
|
if value.to_i == record.id
|
|
record.errors.add(:merge_story_short_id, "id cannot be itself.")
|
|
end
|
|
end
|
|
|
|
COMMENTABLE_DAYS = 90
|
|
FLAGGABLE_DAYS = 14
|
|
|
|
# the lowest a score can go
|
|
FLAGGABLE_MIN_SCORE = -5
|
|
|
|
# after this many minutes old, a story cannot be edited
|
|
MAX_EDIT_MINS = (60 * 6)
|
|
|
|
# days a story is considered recent, for resubmitting
|
|
RECENT_DAYS = 30
|
|
|
|
# users needed to make similar suggestions go live
|
|
SUGGESTION_QUORUM = 2
|
|
|
|
# let a hot story linger for this many seconds
|
|
HOTNESS_WINDOW = 60 * 60 * 22
|
|
|
|
# drop these words from titles when making URLs
|
|
TITLE_DROP_WORDS = ["", "a", "an", "and", "but", "in", "of", "or", "that", "the", "to"].freeze
|
|
|
|
# URI.parse is not very lenient, so we can't use it
|
|
URL_RE = /\A(?<protocol>https?):\/\/(?<domain>([^\.\/]+\.)+[a-z\-]+)(?<port>:\d+)?(\/|\z)/i.freeze
|
|
|
|
# Dingbats, emoji, and other graphics https://www.unicode.org/charts/
|
|
GRAPHICS_RE = /[\u{0000}-\u{001F}\u{2190}\u{2192}-\u{27BF}\u{1F000}-\u{1F9FF}]/.freeze
|
|
|
|
attr_accessor :editing_from_suggestions, :editor, :fetching_ip,
|
|
:is_hidden_by_cur_user, :latest_comment_id,
|
|
:is_saved_by_cur_user, :moderation_reason, :previewing,
|
|
:seen_previous, :vote
|
|
attr_writer :fetched_response
|
|
|
|
before_validation :assign_short_id_and_score, :on => :create
|
|
before_create :assign_initial_hotness
|
|
before_save :log_moderation
|
|
before_save :fix_bogus_chars
|
|
after_create :mark_submitter, :record_initial_upvote
|
|
after_save :update_merged_into_story_comments, :recalculate_hotness!
|
|
|
|
validate do
|
|
if self.url.present?
|
|
already_posted_recently?
|
|
check_not_tracking_domain
|
|
check_not_new_domain_from_new_user
|
|
errors.add(:url, "is not valid") unless url.match(URL_RE)
|
|
elsif self.description.to_s.strip == ""
|
|
errors.add(:description, "must contain text if no URL posted")
|
|
end
|
|
|
|
if self.title.starts_with?("Ask") && self.tags_a.include?('ask')
|
|
errors.add(:title, " starting 'Ask #{Rails.application.name}' or similar is redundant " <<
|
|
"with the ask tag.")
|
|
end
|
|
if self.title.match(GRAPHICS_RE)
|
|
errors.add(:title, " may not contain graphic codepoints")
|
|
end
|
|
|
|
if !errors.any? && self.url.blank?
|
|
self.user_is_author = true
|
|
end
|
|
|
|
check_tags
|
|
end
|
|
|
|
def accepting_comments?
|
|
!self.is_gone? &&
|
|
!self.previewing &&
|
|
(self.new_record? || self.created_at.after?(COMMENTABLE_DAYS.days.ago))
|
|
end
|
|
|
|
def already_posted_recently?
|
|
return false unless self.url.present? && self.new_record?
|
|
|
|
if most_recent_similar && most_recent_similar.is_recent?
|
|
errors.add(:url, "has already been submitted within the past #{RECENT_DAYS} days")
|
|
true
|
|
elsif most_recent_similar && self.user && self.user.is_new?
|
|
errors.add(:url, "cannot be resubmitted by new users")
|
|
true
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def check_not_new_domain_from_new_user
|
|
return unless self.url.present? && self.new_record? && self.domain
|
|
|
|
if self.user && self.user.is_new? && self.domain.stories.not_deleted.count == 0
|
|
ModNote.tattle_on_story_domain!(self, "new user with new")
|
|
errors.add :url, <<-EXPLANATION
|
|
is an unseen domain from a new user. We restrict this to discourage
|
|
self-promotion and give you time to learn about topicality. Skirting
|
|
this with a URL shortener or tweet or something will probably earn a ban.
|
|
EXPLANATION
|
|
end
|
|
end
|
|
|
|
def check_not_tracking_domain
|
|
return unless self.url.present? && self.new_record? && self.domain
|
|
|
|
if self.domain.banned?
|
|
ModNote.tattle_on_story_domain!(self, "banned")
|
|
errors.add(:url, "is from banned domain #{self.domain.domain}: #{self.domain.banned_reason}")
|
|
end
|
|
end
|
|
|
|
# all stories with similar urls
|
|
def self.find_similar_by_url(url)
|
|
url = url.to_s.gsub('[', '\\[')
|
|
url = url.to_s.gsub(']', '\\]')
|
|
urls = [url.to_s.gsub(/(#.*)/, "")]
|
|
urls2 = [url.to_s.gsub(/(#.*)/, "")]
|
|
urls_with_trailing_pound = []
|
|
|
|
# arxiv html page and its pdf link based off the [arxiv identifier](https://arxiv.org/help/arxiv_identifier)
|
|
if /^https?:\/\/(www\d*\.)?arxiv.org/i.match(url)
|
|
urls.each do |u|
|
|
urls2.push u.gsub(/(arxiv.org\/)abs(\/\d{4}.\d{4,5})/i, '\1pdf\2')
|
|
urls2.push u.gsub(/(arxiv.org\/)abs(\/\d{4}.\d{4,5})/i, '\1pdf\2.pdf')
|
|
urls2.push u.gsub(/(arxiv.org\/)pdf(\/\d{4}.\d{4,5})(.pdf)?/i, '\1abs\2')
|
|
end
|
|
urls = urls2.uniq
|
|
end
|
|
|
|
# www.youtube.com
|
|
# m.youtube.com
|
|
# youtube.com redirects to www.youtube.com
|
|
# youtu.be redirects to www.youtube.com
|
|
# www.m.youtube.com doesn't work
|
|
# www.youtu.be doesn't exist
|
|
# m.youtu.be doesn't exist
|
|
if /^https?:\/\/((?:www\d*|m)\.)?(youtube\.com|youtu\.be)/i.match(url)
|
|
urls.each do |u|
|
|
id = /^https?:\/\/(?:(?:m|www)\.)?(?:youtube\.com\/watch\?v=|youtu\.be\/)([A-z0-9\-_]+)/i
|
|
.match(u)[1]
|
|
|
|
urls2.push "https://www.youtube.com/watch?v=#{id}"
|
|
# In theory, youtube redirects https://youtube.com to https://www.youtube.com
|
|
# let's check it just in case
|
|
urls2.push "https://youtube.com/watch?v=#{id}"
|
|
urls2.push "https://youtu.be/#{id}"
|
|
urls2.push "https://m.youtube.com/watch?v=#{id}"
|
|
end
|
|
urls = urls2.uniq
|
|
end
|
|
|
|
# https
|
|
urls.each do |u|
|
|
urls2.push u.gsub(/^http:\/\//i, "https://")
|
|
urls2.push u.gsub(/^https:\/\//i, "http://")
|
|
end
|
|
urls = urls2.uniq
|
|
|
|
# trailing slash or index.html
|
|
urls.each do |u|
|
|
u_without_slash = u.gsub(/\/+\z/, "")
|
|
urls2.push u_without_slash
|
|
urls2.push u_without_slash + "/"
|
|
urls2.push u_without_slash + "/index.htm"
|
|
urls2.push u_without_slash + "/index.html"
|
|
urls2.push u.gsub(/\/index.html?\z/, "")
|
|
end
|
|
urls = urls2.uniq
|
|
|
|
# www prefix
|
|
urls.each do |u|
|
|
urls2.push u.gsub(/^(https?:\/\/)www\d*\./i) {|_| $1 }
|
|
urls2.push u.gsub(/^(https?:\/\/)/i) {|_| "#{$1}www." }
|
|
end
|
|
urls = urls2.uniq
|
|
|
|
# trailing pound
|
|
urls.each do |u|
|
|
urls_with_trailing_pound.push u + "#"
|
|
end
|
|
|
|
# if a previous submission was moderated, return it to block it from being
|
|
# submitted again
|
|
Story
|
|
.where(:url => urls)
|
|
.or(Story.where("url RLIKE ?", urls_with_trailing_pound.join(".|")))
|
|
.where("is_deleted = ? OR is_moderated = ?", false, true)
|
|
end
|
|
|
|
# doesn't include deleted/moderated/merged stories
|
|
def similar_stories
|
|
return [] unless self.url.present?
|
|
|
|
@_similar_stories ||= Story.find_similar_by_url(self.url).order("id DESC")
|
|
# do not include this story itself or any story merged into it
|
|
if self.id?
|
|
@_similar_stories = @_similar_stories.where.not(id: self.id)
|
|
.where('merged_story_id is null or merged_story_id != ?', self.id)
|
|
end
|
|
# do not include the story this one is merged into
|
|
if self.merged_story_id?
|
|
@_similar_stories = @_similar_stories.where('id != ?', self.merged_story_id)
|
|
end
|
|
@_similar_stories
|
|
end
|
|
|
|
def public_similar_stories(user)
|
|
@_public_similar_stories ||= similar_stories.empty? ? [] : similar_stories.base(user)
|
|
end
|
|
|
|
def most_recent_similar
|
|
similar_stories.first
|
|
end
|
|
|
|
def self.recalculate_all_hotnesses!
|
|
# do the front page first, since find_each can't take an order
|
|
Story.order("id DESC").limit(100).each(&:recalculate_hotness!)
|
|
Story.find_each(&:recalculate_hotness!)
|
|
true
|
|
end
|
|
|
|
def archiveorg_url
|
|
# This will redirect to the latest version they have
|
|
"https://web.archive.org/web/3/#{CGI.escape(self.url)}"
|
|
end
|
|
|
|
def archivetoday_url
|
|
"https://archive.today/#{CGI.escape(self.url)}"
|
|
end
|
|
|
|
def ghost_url
|
|
"https://ghostarchive.org/search?term=#{CGI.escape(self.url)}"
|
|
end
|
|
|
|
def as_json(options = {})
|
|
h = [
|
|
:short_id,
|
|
:short_id_url,
|
|
:created_at,
|
|
:title,
|
|
:url,
|
|
:score,
|
|
:score,
|
|
:flags,
|
|
{ :comment_count => :comments_count },
|
|
{ :description => :markeddown_description },
|
|
{ :description_plain => :description },
|
|
:comments_url,
|
|
{ :submitter_user => :user },
|
|
{ :tags => self.tags.map(&:tag).sort },
|
|
]
|
|
|
|
if options && options[:with_comments]
|
|
h.push(:comments => options[:with_comments])
|
|
end
|
|
|
|
js = {}
|
|
h.each do |k|
|
|
if k.is_a?(Symbol)
|
|
js[k] = self.send(k)
|
|
elsif k.is_a?(Hash)
|
|
if k.values.first.is_a?(Symbol)
|
|
js[k.keys.first] = self.send(k.values.first)
|
|
else
|
|
js[k.keys.first] = k.values.first
|
|
end
|
|
end
|
|
end
|
|
|
|
js
|
|
end
|
|
|
|
def assign_initial_hotness
|
|
self.hotness = self.calculated_hotness
|
|
end
|
|
|
|
def assign_short_id_and_score
|
|
self.short_id = ShortId.new(self.class).generate
|
|
self.score ||= 1 # tests are allowed to fake out the score
|
|
end
|
|
|
|
def calculated_hotness
|
|
# take each tag's hotness modifier into effect, and give a slight bump to
|
|
# stories submitted by the author
|
|
base = self.tags.sum(:hotness_mod) + (self.user_is_author? && self.url.present? ? 0.25 : 0.0)
|
|
|
|
# give a story's comment votes some weight, ignoring submitter's comments
|
|
sum_expression = base < 0 ? "flags * -0.5" : "score + 1"
|
|
cpoints = self.merged_comments.where.not(user_id: self.user_id).sum(sum_expression).to_f * 0.5
|
|
|
|
# mix in any stories this one cannibalized
|
|
cpoints += self.merged_stories.map(&:score).inject(&:+).to_f
|
|
|
|
# if a story has many comments but few votes, it's probably a bad story, so
|
|
# cap the comment points at the number of upvotes
|
|
upvotes = self.score + self.flags
|
|
if cpoints > upvotes
|
|
cpoints = upvotes
|
|
end
|
|
|
|
# don't immediately kill stories at 0 by bumping up score by one
|
|
order = Math.log([(score + 1).abs + cpoints, 1].max, 10)
|
|
if score > 0
|
|
sign = 1
|
|
elsif score < 0
|
|
sign = -1
|
|
else
|
|
sign = 0
|
|
end
|
|
|
|
return -((order * sign) + base +
|
|
((self.created_at || Time.current).to_f / HOTNESS_WINDOW)).round(7)
|
|
end
|
|
|
|
def can_be_seen_by_user?(user)
|
|
!is_gone? || (user && (user.is_moderator? || user.id == self.user_id))
|
|
end
|
|
|
|
def can_have_images?
|
|
# doesn't test self.editor so a user can't trick a mod into editing a
|
|
# story to enable an image
|
|
self.user.try(:is_moderator?)
|
|
end
|
|
|
|
def can_have_suggestions_from_user?(user)
|
|
if !user || (user.id == self.user_id) || !user.can_offer_suggestions?
|
|
return false
|
|
end
|
|
return false if self.is_moderated?
|
|
|
|
self.tags.each {|t| return false if t.privileged? }
|
|
return true
|
|
end
|
|
|
|
# this has to happen just before save rather than in tags_a= because we need
|
|
# to have a valid user_id; remember it fills .taggings, not .tags
|
|
def check_tags
|
|
u = self.editor || self.user
|
|
|
|
if u && u.is_new? &&
|
|
(unpermitted = self.taggings.filter {|t| !t.tag.permit_by_new_users? }).any?
|
|
tags = unpermitted.map {|t| t.tag.tag }.to_sentence
|
|
errors.add :base, <<-EXPLANATION
|
|
New users can't submit stories with the tag(s) #{tags}
|
|
because they're for meta discussion or prone to off-topic stories.
|
|
If a tag is appropriate for the story, leaving it off to skirt this
|
|
restriction can earn a ban.
|
|
EXPLANATION
|
|
ModNote.tattle_on_new_user_tagging!(self)
|
|
return
|
|
end
|
|
|
|
self.taggings.each do |t|
|
|
if !t.tag.valid_for?(u)
|
|
raise "#{u.username} does not have permission to use privileged tag #{t.tag.tag}"
|
|
elsif !t.tag.active? && t.new_record? && !t.marked_for_destruction?
|
|
# stories can have inactive tags as long as they existed before
|
|
raise "#{u.username} cannot add inactive tag #{t.tag.tag}"
|
|
end
|
|
end
|
|
|
|
if self.taggings.reject {|t| t.marked_for_destruction? || t.tag.is_media? }.empty?
|
|
errors.add(:base, "Must have at least one non-media (PDF, video) " <<
|
|
"tag. If no tags apply to your content, it probably doesn't " <<
|
|
"belong here.")
|
|
end
|
|
end
|
|
|
|
def comments_path
|
|
"#{short_id_path}/#{self.title_as_url}"
|
|
end
|
|
|
|
def comments_url
|
|
"#{short_id_url}/#{self.title_as_url}"
|
|
end
|
|
|
|
def description=(desc)
|
|
self[:description] = desc.to_s.rstrip
|
|
self.markeddown_description = self.generated_markeddown_description
|
|
end
|
|
|
|
def description_or_story_text(chars = 0)
|
|
s = if self.description.present?
|
|
self.markeddown_description.gsub(/<[^>]*>/, "")
|
|
else
|
|
self.story_text && self.story_text.body
|
|
end
|
|
|
|
if chars > 0 && s.to_s.length > chars
|
|
# remove last truncated word
|
|
s = s.to_s[0, chars].gsub(/ [^ ]*\z/, "")
|
|
end
|
|
|
|
HTMLEntities.new.decode(s.to_s)
|
|
end
|
|
|
|
def domain_search_url
|
|
"/search?order=newest&q=domain:#{self.domain}"
|
|
end
|
|
|
|
def fix_bogus_chars
|
|
# this is needlessly complicated to work around character encoding issues
|
|
# that arise when doing just self.title.to_s.gsub(160.chr, "")
|
|
self.title = self.title.to_s.split("").map {|chr|
|
|
if chr.ord == 160
|
|
" "
|
|
else
|
|
chr
|
|
end
|
|
}.join("")
|
|
|
|
true
|
|
end
|
|
|
|
def generated_markeddown_description
|
|
Markdowner.to_html(self.description, allow_images: self.can_have_images?)
|
|
end
|
|
|
|
# TODO: race condition: if two votes arrive at the same time, the second one
|
|
# won't take the first's score change into effect for calculated_hotness
|
|
def update_score_and_recalculate!(score_delta, flag_delta)
|
|
self.score += score_delta
|
|
self.flags += flag_delta
|
|
Story.connection.execute <<~SQL
|
|
UPDATE stories SET
|
|
score = (select coalesce(sum(vote), 0) from votes where story_id = stories.id and comment_id is null),
|
|
flags = (select count(*) from votes where story_id = stories.id and comment_id is null and vote = -1),
|
|
hotness = #{self.calculated_hotness}
|
|
WHERE id = #{self.id.to_i}
|
|
SQL
|
|
end
|
|
|
|
def has_suggestions?
|
|
self.suggested_taggings.any? || self.suggested_titles.any?
|
|
end
|
|
|
|
def hider_count
|
|
@hider_count ||= HiddenStory.where(:story_id => self.id).count
|
|
end
|
|
|
|
def html_class_for_user
|
|
c = []
|
|
if !self.user.is_active?
|
|
c.push "inactive_user"
|
|
elsif self.user.is_new?
|
|
c.push "new_user"
|
|
elsif self.user_is_author?
|
|
c.push "user_is_author"
|
|
end
|
|
|
|
c.join("")
|
|
end
|
|
|
|
def is_flaggable?
|
|
if self.created_at && self.score > FLAGGABLE_MIN_SCORE
|
|
Time.current - self.created_at <= FLAGGABLE_DAYS.days
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def is_editable_by_user?(user)
|
|
if user && user.is_moderator?
|
|
return true
|
|
elsif user && user.id == self.user_id
|
|
if self.is_moderated?
|
|
return false
|
|
else
|
|
return (Time.current.to_i - self.created_at.to_i < (60 * MAX_EDIT_MINS))
|
|
end
|
|
else
|
|
return false
|
|
end
|
|
end
|
|
|
|
def is_gone?
|
|
is_deleted? || (self.user.is_banned? && score < 0)
|
|
end
|
|
|
|
def is_hidden_by_user?(user)
|
|
!!HiddenStory.find_by(:user_id => user.id, :story_id => self.id)
|
|
end
|
|
|
|
def is_recent?
|
|
self.created_at >= RECENT_DAYS.days.ago
|
|
end
|
|
|
|
def is_saved_by_user?(user)
|
|
!!SavedStory.find_by(:user_id => user.id, :story_id => self.id)
|
|
end
|
|
|
|
def is_unavailable
|
|
self.unavailable_at != nil
|
|
end
|
|
|
|
def is_unavailable=(what)
|
|
self.unavailable_at = (what.to_i == 1 && !self.is_unavailable ? Time.current : nil)
|
|
end
|
|
|
|
def is_undeletable_by_user?(user)
|
|
if user && user.is_moderator?
|
|
return true
|
|
elsif user && user.id == self.user_id && !self.is_moderated?
|
|
return true
|
|
else
|
|
return false
|
|
end
|
|
end
|
|
|
|
def log_moderation
|
|
if self.new_record? ||
|
|
(!self.editing_from_suggestions && (!self.editor || self.editor.id == self.user_id))
|
|
return
|
|
end
|
|
|
|
all_changes = self.changes.merge(self.tagging_changes)
|
|
all_changes.delete("unavailable_at")
|
|
|
|
if !all_changes.any?
|
|
return
|
|
end
|
|
|
|
m = Moderation.new
|
|
if self.editing_from_suggestions
|
|
m.is_from_suggestions = true
|
|
else
|
|
m.moderator_user_id = self.editor.try(:id)
|
|
end
|
|
m.story_id = self.id
|
|
|
|
m.action = all_changes.map {|k, v|
|
|
if k == "is_deleted" && self.is_deleted?
|
|
"deleted story"
|
|
elsif k == "is_deleted" && !self.is_deleted?
|
|
"undeleted story"
|
|
elsif k == "merged_story_id"
|
|
if v[1]
|
|
"merged into #{self.merged_into_story.short_id} " <<
|
|
"(#{self.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 = self.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:#{self.user_id}:stories_submitted")
|
|
end
|
|
|
|
def merged_comments
|
|
# TODO: make this a normal has_many?
|
|
Comment.where(story_id: Story.select(:id).where(merged_story_id: self.id)
|
|
.where('merged_story_id is not null') + [self.id])
|
|
end
|
|
|
|
def merge_story_short_id=(sid)
|
|
self.merged_story_id = sid.present? ? Story.where(:short_id => sid).pluck(:id).first : nil
|
|
end
|
|
|
|
def merge_story_short_id
|
|
self.merged_story_id ? self.merged_into_story.try(:short_id) : nil
|
|
end
|
|
|
|
def recalculate_hotness!
|
|
update_column :hotness, calculated_hotness
|
|
end
|
|
|
|
def record_initial_upvote
|
|
Vote.vote_thusly_on_story_or_comment_for_user_because(1, self.id, nil, self.user_id, nil, false)
|
|
end
|
|
|
|
def short_id_path
|
|
Rails.application.routes.url_helpers.root_path + "s/#{self.short_id}"
|
|
end
|
|
|
|
def short_id_url
|
|
Rails.application.root_url + "s/#{self.short_id}"
|
|
end
|
|
|
|
def show_score_to_user?(u)
|
|
return true if u && u.is_moderator?
|
|
# cast nil to 0, only show score if user hasn't flagged
|
|
(!vote || vote[:vote].to_i >= 0)
|
|
end
|
|
|
|
def tagging_changes
|
|
old_tags_a = self.taggings.reject(&:new_record?).map {|tg| tg.tag.tag }.join(" ")
|
|
new_tags_a = self.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 ||= self.taggings.reject(&:marked_for_destruction?).map {|t| t.tag.tag }
|
|
end
|
|
|
|
def tags_a=(new_tag_names_a)
|
|
self.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 != "" && !self.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
|
|
self.taggings.build(tag_id: t.id)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
def save_suggested_tags_a_for_user!(new_tag_names_a, user)
|
|
st = self.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 = self.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 = {}
|
|
self.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 != self.tags_a.sort)
|
|
Rails.logger.info "[s#{self.id}] promoting suggested tags " <<
|
|
"#{final_tags.inspect} instead of #{self.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 !self.save
|
|
Rails.logger.error "[s#{self.id}] failed auto promoting: " <<
|
|
self.errors.inspect
|
|
end
|
|
end
|
|
end
|
|
|
|
def save_suggested_title_for_user!(title, user)
|
|
st = self.suggested_titles.find_by(:user_id => user.id)
|
|
if !st
|
|
st = self.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 = {}
|
|
self.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#{self.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 !self.save
|
|
Rails.logger.error "[s#{self.id}] failed auto promoting: " <<
|
|
self.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 = []
|
|
|
|
self.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
|
|
self.short_id
|
|
end
|
|
|
|
def update_availability
|
|
if self.is_unavailable && !self.unavailable_at
|
|
self.unavailable_at = Time.current
|
|
elsif self.unavailable_at && !self.is_unavailable
|
|
self.unavailable_at = nil
|
|
end
|
|
end
|
|
|
|
def update_comments_count!
|
|
comments = self.merged_comments.arrange_for_user(nil)
|
|
|
|
# calculate count after removing deleted comments and threads
|
|
self.update_column :comments_count, (comments.count {|c| !c.is_gone? })
|
|
self.update_merged_into_story_comments
|
|
self.recalculate_hotness!
|
|
end
|
|
|
|
def update_merged_into_story_comments
|
|
if self.merged_into_story
|
|
self.merged_into_story.update_comments_count!
|
|
end
|
|
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?
|
|
self.created_at && self.created_at <= 1.hour && self.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)..-1]
|
|
@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
|
|
|
|
super(u)
|
|
end
|
|
|
|
def url_is_editable_by_user?(user)
|
|
if self.new_record?
|
|
true
|
|
elsif user && user.is_moderator?
|
|
true
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def url_or_comments_path
|
|
self.url.presence || self.comments_path
|
|
end
|
|
|
|
def url_or_comments_url
|
|
self.url.presence || self.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 && 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 title.match(/ [ \-\|\u2013] $/)
|
|
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 => self.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/
|
|
return fetched_attributes_pdf
|
|
else
|
|
return fetched_attributes_html
|
|
end
|
|
rescue
|
|
return @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
|