cb4ef24ac9
It is reasonable to expect someone to enter #foo to mute hashtag #foo. However, tags are recorded on statuses without the preceding #. To adjust for this, we build a separate tag matcher and use Tag::HASHTAG_RE to extract a hashtag from the hashtag syntax.
100 lines
2.3 KiB
Ruby
100 lines
2.3 KiB
Ruby
# frozen_string_literal: true
|
|
# == Schema Information
|
|
#
|
|
# Table name: glitch_keyword_mutes
|
|
#
|
|
# id :integer not null, primary key
|
|
# account_id :integer not null
|
|
# keyword :string not null
|
|
# whole_word :boolean default(TRUE), not null
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
#
|
|
|
|
class Glitch::KeywordMute < ApplicationRecord
|
|
belongs_to :account, required: true
|
|
|
|
validates_presence_of :keyword
|
|
|
|
after_commit :invalidate_cached_matchers
|
|
|
|
def self.text_matcher_for(account_id)
|
|
TextMatcher.new(account_id)
|
|
end
|
|
|
|
def self.tag_matcher_for(account_id)
|
|
TagMatcher.new(account_id)
|
|
end
|
|
|
|
private
|
|
|
|
def invalidate_cached_matchers
|
|
Rails.cache.delete(TextMatcher.cache_key(account_id))
|
|
Rails.cache.delete(TagMatcher.cache_key(account_id))
|
|
end
|
|
|
|
class RegexpMatcher
|
|
attr_reader :account_id
|
|
attr_reader :regex
|
|
|
|
def initialize(account_id)
|
|
@account_id = account_id
|
|
regex_text = Rails.cache.fetch(self.class.cache_key(account_id)) { make_regex_text }
|
|
@regex = /#{regex_text}/
|
|
end
|
|
|
|
protected
|
|
|
|
def keywords
|
|
Glitch::KeywordMute.where(account_id: account_id).pluck(:whole_word, :keyword)
|
|
end
|
|
|
|
def boundary_regex_for_keyword(keyword)
|
|
sb = keyword =~ /\A[[:word:]]/ ? '\b' : ''
|
|
eb = keyword =~ /[[:word:]]\Z/ ? '\b' : ''
|
|
|
|
/(?mix:#{sb}#{Regexp.escape(keyword)}#{eb})/
|
|
end
|
|
end
|
|
|
|
class TextMatcher < RegexpMatcher
|
|
def self.cache_key(account_id)
|
|
format('keyword_mutes:regex:%s', account_id)
|
|
end
|
|
|
|
def =~(str)
|
|
regex =~ str
|
|
end
|
|
|
|
private
|
|
|
|
def make_regex_text
|
|
kws = keywords.map! do |whole_word, keyword|
|
|
whole_word ? boundary_regex_for_keyword(keyword) : keyword
|
|
end
|
|
|
|
Regexp.union(kws).source
|
|
end
|
|
end
|
|
|
|
class TagMatcher < RegexpMatcher
|
|
def self.cache_key(account_id)
|
|
format('keyword_mutes:tag:%s', account_id)
|
|
end
|
|
|
|
def =~(tags)
|
|
tags.pluck(:name).detect { |n| regex =~ n }
|
|
end
|
|
|
|
private
|
|
|
|
def make_regex_text
|
|
kws = keywords.map! do |whole_word, keyword|
|
|
term = (Tag::HASHTAG_RE =~ keyword) ? $1 : keyword
|
|
whole_word ? boundary_regex_for_keyword(term) : term
|
|
end
|
|
|
|
Regexp.union(kws).source
|
|
end
|
|
end
|
|
end
|