212 lines
7.7 KiB
Ruby
212 lines
7.7 KiB
Ruby
# frozen_string_literal: true
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require 'singleton'
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class FeedManager
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include Singleton
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# include Redisable
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MAX_ITEMS = 150
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# Must be <= MAX_ITEMS or the tracking sets will grow forever
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REBLOG_FALLOFF = 40
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def key(type, id, subtype = nil)
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return "feed:#{type}:#{id}" unless subtype
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"feed:#{type}:#{id}:#{subtype}"
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end
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# status or chatMessage
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def filter?(timeline_type, status, receiver_id)
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if timeline_type == :home
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filter_from_home?(status, receiver_id)
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elsif timeline_type == :chat_message
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filter_from_chat_messages?(status, receiver_id)
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elsif timeline_type == :mentions
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filter_from_mentions?(status, receiver_id)
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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 push_to_home(account, status)
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true
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# return false unless add_to_feed(:home, account.id, status, account.user&.aggregates_reblogs?)
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# trim(:home, account.id)
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# PushUpdateWorker.perform_async(account.id, status.id, "timeline:#{account.id}") if push_update_required?("timeline:#{account.id}")
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true
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end
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def unpush_from_home(account, status)
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true
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# return false unless remove_from_feed(:home, account.id, status)
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# redis.publish("timeline:#{account.id}", Oj.dump(event: :delete, payload: status.id.to_s))
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# true
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end
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def unpush_from_list(list, status)
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# return false unless remove_from_feed(:list, list.id, status)
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# redis.publish("timeline:list:#{list.id}", Oj.dump(event: :delete, payload: status.id.to_s))
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# true
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end
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def trim(type, account_id)
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end
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def merge_into_timeline(from_account, into_account)
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end
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def unmerge_from_timeline(from_account, into_account)
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end
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def clear_from_timeline(account, target_account)
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end
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def populate_feed(account)
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end
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private
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def push_update_required?(timeline_id)
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end
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def blocks_or_mutes?(receiver_id, account_ids, context)
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Block.where(account_id: receiver_id, target_account_id: account_ids).any? ||
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(context == :home ? Mute.where(account_id: receiver_id, target_account_id: account_ids).any? : Mute.where(account_id: receiver_id, target_account_id: account_ids, hide_notifications: true).any?)
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end
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def chat_blocks?(receiver_id, account_ids)
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ChatBlock.where(account_id: receiver_id, target_account_id: account_ids).any?
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end
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def filter_from_home?(status, receiver_id)
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return false if receiver_id == status.account_id
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return true if status.reply? && (status.in_reply_to_id.nil? || status.in_reply_to_account_id.nil?)
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return true if phrase_filtered?(status, receiver_id, :home)
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check_for_blocks = status.active_mentions.pluck(:account_id)
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check_for_blocks.concat([status.account_id])
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if status.reblog?
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check_for_blocks.concat([status.reblog.account_id])
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check_for_blocks.concat(status.reblog.active_mentions.pluck(:account_id))
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end
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return true if blocks_or_mutes?(receiver_id, check_for_blocks, :home)
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if status.reply? && !status.in_reply_to_account_id.nil? # Filter out if it's a reply
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should_filter = !Follow.where(account_id: receiver_id, target_account_id: status.in_reply_to_account_id).exists? # and I'm not following the person it's a reply to
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should_filter &&= receiver_id != status.in_reply_to_account_id # and it's not a reply to me
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should_filter &&= status.account_id != status.in_reply_to_account_id # and it's not a self-reply
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return should_filter
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elsif status.reblog? # Filter out a reblog
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should_filter ||= Block.where(account_id: status.reblog.account_id, target_account_id: receiver_id).exists? # or if the author of the reblogged status is blocking me
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return should_filter
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end
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return false if status.group_id
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false
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end
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def filter_from_chat_messages?(chat_message, receiver_id)
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return false if receiver_id == chat_message.from_account_id
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return true if phrase_filtered_from_chat_message?(chat_message, receiver_id, :thread)
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check_for_blocks = [chat_message.from_account_id]
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return true if blocks_or_mutes?(receiver_id, check_for_blocks, :home)
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return true if chat_blocks?(receiver_id, check_for_blocks)
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false
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end
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def filter_from_mentions?(status, receiver_id)
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return true if receiver_id == status.account_id
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return true if phrase_filtered?(status, receiver_id, :notifications)
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# This filter is called from NotifyService, but already after the sender of
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# the notification has been checked for mute/block. Therefore, it's not
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# necessary to check the author of the gab for mute/block again
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check_for_blocks = status.active_mentions.pluck(:account_id)
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check_for_blocks.concat([status.in_reply_to_account]) if status.reply? && !status.in_reply_to_account_id.nil?
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should_filter = blocks_or_mutes?(receiver_id, check_for_blocks, :mentions) # Filter if it's from someone I blocked, in reply to someone I blocked, or mentioning someone I blocked (or muted)
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should_filter ||= (status.account.silenced? && !Follow.where(account_id: receiver_id, target_account_id: status.account_id).exists?) # of if the account is silenced and I'm not following them
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should_filter
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end
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def phrase_filtered?(status, receiver_id, context)
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active_filters = Rails.cache.fetch("filters:#{receiver_id}") { CustomFilter.where(account_id: receiver_id).active_irreversible.to_a }.to_a
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active_filters.select! { |filter| filter.context.include?(context.to_s) && !filter.expired? }
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active_filters.map! do |filter|
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if filter.whole_word
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sb = filter.phrase =~ /\A[[:word:]]/ ? '\b' : ''
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eb = filter.phrase =~ /[[:word:]]\z/ ? '\b' : ''
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/(?mix:#{sb}#{Regexp.escape(filter.phrase)}#{eb})/
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else
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/#{Regexp.escape(filter.phrase)}/i
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end
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end
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return false if active_filters.empty?
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combined_regex = active_filters.reduce { |memo, obj| Regexp.union(memo, obj) }
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status = status.reblog if status.reblog?
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!combined_regex.match(Formatter.instance.plaintext(status)).nil? ||
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(status.spoiler_text.present? && !combined_regex.match(status.spoiler_text).nil?)
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end
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def phrase_filtered_from_chat_message?(chat_message, receiver_id, context)
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active_filters = Rails.cache.fetch("filters:#{receiver_id}") { CustomFilter.where(account_id: receiver_id).active_irreversible.to_a }.to_a
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active_filters.select! { |filter| filter.context.include?(context.to_s) && !filter.expired? }
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active_filters.map! do |filter|
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if filter.whole_word
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sb = filter.phrase =~ /\A[[:word:]]/ ? '\b' : ''
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eb = filter.phrase =~ /[[:word:]]\z/ ? '\b' : ''
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/(?mix:#{sb}#{Regexp.escape(filter.phrase)}#{eb})/
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else
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/#{Regexp.escape(filter.phrase)}/i
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end
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end
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return false if active_filters.empty?
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combined_regex = active_filters.reduce { |memo, obj| Regexp.union(memo, obj) }
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!combined_regex.match(chat_message.text).nil?
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end
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# Adds a status to an account's feed, returning true if a status was
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# added, and false if it was not added to the feed. Note that this is
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# an internal helper: callers must call trim or push updates if
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# either action is appropriate.
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def add_to_feed(timeline_type, account_id, status, aggregate_reblogs = true)
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true
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end
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# Removes an individual status from a feed, correctly handling cases
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# with reblogs, and returning true if a status was removed. As with
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# `add_to_feed`, this does not trigger push updates, so callers must
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# do so if appropriate.
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def remove_from_feed(timeline_type, account_id, status)
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end
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end
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