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47 lines
1.1 KiB
47 lines
1.1 KiB
# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: keyword_mutes
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#
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# id :integer not null, primary key
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# account_id :integer not null
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# keyword :string not null
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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class KeywordMute < ApplicationRecord
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belongs_to :account, required: true
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validates_presence_of :keyword
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after_commit :invalidate_cached_matcher
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def self.matcher_for(account_id)
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Rails.cache.fetch("keyword_mutes:matcher:#{account_id}") { Matcher.new(account_id) }
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end
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private
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def invalidate_cached_matcher
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Rails.cache.delete("keyword_mutes:matcher:#{account_id}")
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end
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class Matcher
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attr_reader :regex
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def initialize(account_id)
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re = [].tap do |arr|
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KeywordMute.where(account_id: account_id).select(:keyword, :id).find_each do |m|
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arr << Regexp.escape(m.keyword.strip)
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end
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end.join('|')
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@regex = /\b(?:#{re})\b/i unless re.empty?
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end
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def =~(str)
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regex ? regex =~ str : false
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end
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end
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end
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