You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
4.1 KiB
142 lines
4.1 KiB
# frozen_string_literal: true
|
|
|
|
class Trends::Statuses < Trends::Base
|
|
PREFIX = 'trending_statuses'
|
|
|
|
self.default_options = {
|
|
threshold: 5,
|
|
review_threshold: 3,
|
|
score_halflife: 2.hours.freeze,
|
|
}
|
|
|
|
class Query < Trends::Query
|
|
def filtered_for!(account)
|
|
@account = account
|
|
self
|
|
end
|
|
|
|
def filtered_for(account)
|
|
clone.filtered_for!(account)
|
|
end
|
|
|
|
private
|
|
|
|
def apply_scopes(scope)
|
|
scope.includes(:account)
|
|
end
|
|
|
|
def perform_queries
|
|
return super if @account.nil?
|
|
|
|
statuses = super
|
|
account_ids = statuses.map(&:account_id)
|
|
account_domains = statuses.map(&:account_domain)
|
|
|
|
preloaded_relations = {
|
|
blocking: Account.blocking_map(account_ids, @account.id),
|
|
blocked_by: Account.blocked_by_map(account_ids, @account.id),
|
|
muting: Account.muting_map(account_ids, @account.id),
|
|
following: Account.following_map(account_ids, @account.id),
|
|
domain_blocking_by_domain: Account.domain_blocking_map_by_domain(account_domains, @account.id),
|
|
}
|
|
|
|
statuses.reject { |status| StatusFilter.new(status, @account, preloaded_relations).filtered? }
|
|
end
|
|
end
|
|
|
|
def register(status, at_time = Time.now.utc)
|
|
add(status.proper, status.account_id, at_time) if eligible?(status)
|
|
end
|
|
|
|
def add(status, _account_id, at_time = Time.now.utc)
|
|
# We rely on the total reblogs and favourites count, so we
|
|
# don't record which account did the what and when here
|
|
|
|
record_used_id(status.id, at_time)
|
|
end
|
|
|
|
def query
|
|
Query.new(key_prefix, klass)
|
|
end
|
|
|
|
def refresh(at_time = Time.now.utc)
|
|
statuses = Status.where(id: (recently_used_ids(at_time) + currently_trending_ids(false, -1)).uniq).includes(:account, :media_attachments)
|
|
calculate_scores(statuses, at_time)
|
|
trim_older_items
|
|
end
|
|
|
|
def request_review
|
|
statuses = Status.where(id: currently_trending_ids(false, -1)).includes(:account)
|
|
|
|
statuses.filter_map do |status|
|
|
next unless would_be_trending?(status.id) && !status.trendable? && status.requires_review_notification?
|
|
|
|
status.account.touch(:requested_review_at)
|
|
status
|
|
end
|
|
end
|
|
|
|
protected
|
|
|
|
def key_prefix
|
|
PREFIX
|
|
end
|
|
|
|
def klass
|
|
Status
|
|
end
|
|
|
|
private
|
|
|
|
def eligible?(status)
|
|
original_status = status.proper
|
|
|
|
original_status.public_visibility? &&
|
|
original_status.account.discoverable? && !original_status.account.silenced? &&
|
|
original_status.spoiler_text.blank? && !original_status.sensitive? && !original_status.reply?
|
|
end
|
|
|
|
def calculate_scores(statuses, at_time)
|
|
redis.pipelined do
|
|
statuses.each do |status|
|
|
expected = 1.0
|
|
observed = (status.reblogs_count + status.favourites_count).to_f
|
|
|
|
score = begin
|
|
if expected > observed || observed < options[:threshold]
|
|
0
|
|
else
|
|
((observed - expected)**2) / expected
|
|
end
|
|
end
|
|
|
|
decaying_score = score * (0.5**((at_time.to_f - status.created_at.to_f) / options[:score_halflife].to_f))
|
|
|
|
add_to_and_remove_from_subsets(status.id, decaying_score, {
|
|
all: true,
|
|
allowed: status.trendable? && status.account.discoverable?,
|
|
})
|
|
|
|
next unless valid_locale?(status.language)
|
|
|
|
add_to_and_remove_from_subsets(status.id, decaying_score, {
|
|
"all:#{status.language}" => true,
|
|
"allowed:#{status.language}" => status.trendable? && status.account.discoverable?,
|
|
})
|
|
end
|
|
|
|
# Clean up localized sets by calculating the intersection with the main
|
|
# set. We do this instead of just deleting the localized sets to avoid
|
|
# having moments where the API returns empty results
|
|
|
|
Trends.available_locales.each do |locale|
|
|
redis.zinterstore("#{key_prefix}:all:#{locale}", ["#{key_prefix}:all:#{locale}", "#{key_prefix}:all"], aggregate: 'max')
|
|
redis.zinterstore("#{key_prefix}:allowed:#{locale}", ["#{key_prefix}:allowed:#{locale}", "#{key_prefix}:all"], aggregate: 'max')
|
|
end
|
|
end
|
|
end
|
|
|
|
def would_be_trending?(id)
|
|
score(id) > score_at_rank(options[:review_threshold] - 1)
|
|
end
|
|
end
|