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# frozen_string_literal: true
# == Schema Information
#
# Table name: domain_blocks
#
# id :bigint(8) not null, primary key
# domain :string default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# severity :integer default("silence")
# reject_media :boolean default(FALSE), not null
# reject_reports :boolean default(FALSE), not null
# private_comment :text
# public_comment :text
# obfuscate :boolean default(FALSE), not null
#
class DomainBlock < ApplicationRecord
include Paginable
include DomainNormalizable
include DomainMaterializable
enum severity: [:silence, :suspend, :noop]
validates :domain, presence: true, uniqueness: true, domain: true
has_many :accounts, foreign_key: :domain, primary_key: :domain
delegate :count, to: :accounts, prefix: true
scope :matches_domain, ->(value) { where(arel_table[:domain].matches("%#{value}%")) }
scope :with_user_facing_limitations, -> { where(severity: [:silence, :suspend]) }
scope :with_limitations, -> { where(severity: [:silence, :suspend]).or(where(reject_media: true)) }
scope :by_severity, -> { order(Arel.sql('(CASE severity WHEN 0 THEN 1 WHEN 1 THEN 2 WHEN 2 THEN 0 END), domain')) }
def to_log_human_identifier
domain
end
def policies
if suspend?
[:suspend]
else
[severity.to_sym, reject_media? ? :reject_media : nil, reject_reports? ? :reject_reports : nil].reject { |policy| policy == :noop || policy.nil? }
end
end
class << self
def suspend?(domain)
!!rule_for(domain)&.suspend?
end
def silence?(domain)
!!rule_for(domain)&.silence?
end
def reject_media?(domain)
!!rule_for(domain)&.reject_media?
end
def reject_reports?(domain)
!!rule_for(domain)&.reject_reports?
end
alias blocked? suspend?
def rule_for(domain)
return if domain.blank?
uri = Addressable::URI.new.tap { |u| u.host = domain.strip.gsub(/[\/]/, '') }
segments = uri.normalized_host.split('.')
variants = segments.map.with_index { |_, i| segments[i..-1].join('.') }
where(domain: variants).order(Arel.sql('char_length(domain) desc')).first
rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
nil
end
end
def stricter_than?(other_block)
return true if suspend?
return false if other_block.suspend? && (silence? || noop?)
return false if other_block.silence? && noop?
(reject_media || !other_block.reject_media) && (reject_reports || !other_block.reject_reports)
end
def affected_accounts_count
scope = suspend? ? accounts.where(suspended_at: created_at) : accounts.where(silenced_at: created_at)
scope.count
end
def public_domain
return domain unless obfuscate?
length = domain.size
visible_ratio = length / 4
domain.chars.map.with_index do |chr, i|
if i > visible_ratio && i < length - visible_ratio && chr != '.'
'*'
else
chr
end
end.join
end
def domain_digest
Digest::SHA256.hexdigest(domain)
end
end
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