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# frozen_string_literal: true
# == Schema Information
#
# Table name: tags
#
# id :bigint(8) not null, primary key
# name :string default(""), not null
# created_at :datetime not null
# updated_at :datetime not null
# score :integer
#
class Tag < ApplicationRecord
has_and_belongs_to_many :statuses
has_and_belongs_to_many :accounts
has_and_belongs_to_many :sample_accounts, -> { searchable.discoverable.popular.limit(3) }, class_name: 'Account'
has_many :featured_tags, dependent: :destroy, inverse_of: :tag
has_one :account_tag_stat, dependent: :destroy
HASHTAG_NAME_RE = '([[:word:]_][[:word:]_·]*[[:alpha:]_·][[:word:]_·]*[[:word:]_])|([[:word:]_]*[[:alpha:]][[:word:]_]*)'
HASHTAG_RE = /(?:^|[^\/\)\w])#(#{HASHTAG_NAME_RE})/i
validates :name, presence: true, format: { with: /\A(#{HASHTAG_NAME_RE})\z/i }
scope :discoverable, -> { joins(:account_tag_stat).where(AccountTagStat.arel_table[:accounts_count].gt(0)).where(account_tag_stats: { hidden: false }).order(Arel.sql('account_tag_stats.accounts_count desc')) }
scope :hidden, -> { where(account_tag_stats: { hidden: true }) }
scope :most_used, ->(account) { joins(:statuses).where(statuses: { account: account }).group(:id).order(Arel.sql('count(*) desc')) }
delegate :accounts_count,
:accounts_count=,
:increment_count!,
:decrement_count!,
:hidden?,
to: :account_tag_stat
after_save :save_account_tag_stat
def account_tag_stat
super || build_account_tag_stat
end
def cached_sample_accounts
Rails.cache.fetch("#{cache_key}/sample_accounts", expires_in: 12.hours) { sample_accounts }
end
def to_param
name
end
def history
days = []
7.times do |i|
day = i.days.ago.beginning_of_day.to_i
days << {
day: day.to_s,
uses: Redis.current.get("activity:tags:#{id}:#{day}") || '0',
accounts: Redis.current.pfcount("activity:tags:#{id}:#{day}:accounts").to_s,
}
end
days
end
class << self
def find_or_create_by_names(name_or_names)
Array(name_or_names).map(&method(:normalize)).uniq { |str| str.mb_chars.downcase.to_s }.map do |normalized_name|
tag = matching_name(normalized_name).first || create(name: normalized_name)
yield tag if block_given?
tag
end
end
def search_for(term, limit = 5, offset = 0)
normalized_term = normalize(term.strip).mb_chars.downcase.to_s
pattern = sanitize_sql_like(normalized_term) + '%'
Tag.where(arel_table[:name].lower.matches(pattern))
.where(arel_table[:score].gt(0).or(arel_table[:name].lower.eq(normalized_term)))
.order(Arel.sql('length(name) ASC, score DESC, name ASC'))
.limit(limit)
.offset(offset)
end
def find_normalized(name)
matching_name(name).first
end
def find_normalized!(name)
find_normalized(name) || raise(ActiveRecord::RecordNotFound)
end
def matching_name(name_or_names)
names = Array(name_or_names).map { |name| normalize(name).mb_chars.downcase.to_s }
if names.size == 1
where(arel_table[:name].lower.eq(names.first))
else
where(arel_table[:name].lower.in(names))
end
end
private
def normalize(str)
str.gsub(/\A#/, '')
end
end
private
def save_account_tag_stat
return unless account_tag_stat&.changed?
account_tag_stat.save
end
end
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