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.
130 lines
4.4 KiB
130 lines
4.4 KiB
# frozen_string_literal: true
|
|
|
|
require 'singleton'
|
|
|
|
class FeedManager
|
|
include Singleton
|
|
|
|
MAX_ITEMS = 800
|
|
|
|
def key(type, id)
|
|
"feed:#{type}:#{id}"
|
|
end
|
|
|
|
def filter?(timeline_type, status, receiver)
|
|
if timeline_type == :home
|
|
filter_from_home?(status, receiver)
|
|
elsif timeline_type == :mentions
|
|
filter_from_mentions?(status, receiver)
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def push(timeline_type, account, status)
|
|
timeline_key = key(timeline_type, account.id)
|
|
|
|
if status.reblog?
|
|
# If the original status is within 40 statuses from top, do not re-insert it into the feed
|
|
rank = redis.zrevrank(timeline_key, status.reblog_of_id)
|
|
return if !rank.nil? && rank < 40
|
|
redis.zadd(timeline_key, status.id, status.reblog_of_id)
|
|
else
|
|
redis.zadd(timeline_key, status.id, status.id)
|
|
trim(timeline_type, account.id)
|
|
end
|
|
|
|
broadcast(account.id, event: 'update', payload: inline_render(account, 'api/v1/statuses/show', status))
|
|
end
|
|
|
|
def broadcast(timeline_id, options = {})
|
|
options[:queued_at] = (Time.now.to_f * 1000.0).to_i
|
|
ActionCable.server.broadcast("timeline:#{timeline_id}", options)
|
|
end
|
|
|
|
def trim(type, account_id)
|
|
return unless redis.zcard(key(type, account_id)) > FeedManager::MAX_ITEMS
|
|
last = redis.zrevrange(key(type, account_id), FeedManager::MAX_ITEMS - 1, FeedManager::MAX_ITEMS - 1)
|
|
redis.zremrangebyscore(key(type, account_id), '-inf', "(#{last.last}")
|
|
end
|
|
|
|
def merge_into_timeline(from_account, into_account)
|
|
timeline_key = key(:home, into_account.id)
|
|
|
|
from_account.statuses.limit(MAX_ITEMS).each do |status|
|
|
next if filter?(:home, status, into_account)
|
|
redis.zadd(timeline_key, status.id, status.id)
|
|
end
|
|
|
|
trim(:home, into_account.id)
|
|
end
|
|
|
|
def unmerge_from_timeline(from_account, into_account)
|
|
timeline_key = key(:home, into_account.id)
|
|
|
|
from_account.statuses.select('id').find_each do |status|
|
|
redis.zrem(timeline_key, status.id)
|
|
redis.zremrangebyscore(timeline_key, status.id, status.id)
|
|
end
|
|
end
|
|
|
|
def inline_render(target_account, template, object)
|
|
rabl_scope = Class.new do
|
|
include RoutingHelper
|
|
|
|
def initialize(account)
|
|
@account = account
|
|
end
|
|
|
|
def current_user
|
|
@account.try(:user)
|
|
end
|
|
|
|
def current_account
|
|
@account
|
|
end
|
|
end
|
|
|
|
Rabl::Renderer.new(template, object, view_path: 'app/views', format: :json, scope: rabl_scope.new(target_account)).render
|
|
end
|
|
|
|
private
|
|
|
|
def redis
|
|
Redis.current
|
|
end
|
|
|
|
def filter_from_home?(status, receiver)
|
|
return true if receiver.muting?(status.account)
|
|
|
|
should_filter = false
|
|
|
|
if status.reply? && status.in_reply_to_id.nil?
|
|
should_filter = true
|
|
elsif status.reply? && !status.in_reply_to_account_id.nil? # Filter out if it's a reply
|
|
should_filter = !receiver.following?(status.in_reply_to_account) # and I'm not following the person it's a reply to
|
|
should_filter &&= !(receiver.id == status.in_reply_to_account_id) # and it's not a reply to me
|
|
should_filter &&= !(status.account_id == status.in_reply_to_account_id) # and it's not a self-reply
|
|
elsif status.reblog? # Filter out a reblog
|
|
should_filter = receiver.blocking?(status.reblog.account) # if I'm blocking the reblogged person
|
|
should_filter ||= receiver.muting?(status.reblog.account) # or muting that person
|
|
end
|
|
|
|
should_filter ||= receiver.blocking?(status.mentions.map(&:account_id)) # or if it mentions someone I blocked
|
|
|
|
should_filter
|
|
end
|
|
|
|
def filter_from_mentions?(status, receiver)
|
|
should_filter = receiver.id == status.account_id # Filter if I'm mentioning myself
|
|
should_filter ||= receiver.blocking?(status.account) # or it's from someone I blocked
|
|
should_filter ||= receiver.blocking?(status.mentions.includes(:account).map(&:account)) # or if it mentions someone I blocked
|
|
should_filter ||= (status.account.silenced? && !receiver.following?(status.account)) # of if the account is silenced and I'm not following them
|
|
|
|
if status.reply? && !status.in_reply_to_account_id.nil? # or it's a reply
|
|
should_filter ||= receiver.blocking?(status.in_reply_to_account) # to a user I blocked
|
|
end
|
|
|
|
should_filter
|
|
end
|
|
end
|
|
|