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# frozen_string_literal: true
class Admin::Metrics::Measure::NewUsersMeasure < Admin::Metrics::Measure::BaseMeasure
def key
'new_users'
end
protected
def perform_total_query
User.where(created_at: time_period).count
end
def perform_previous_total_query
User.where(created_at: previous_time_period).count
end
def perform_data_query
sql = <<-SQL.squish
SELECT axis.*, (
WITH new_users AS (
SELECT users.id
FROM users
WHERE date_trunc('day', users.created_at)::date = axis.period
)
SELECT count(*) FROM new_users
) AS value
FROM (
SELECT generate_series(date_trunc('day', $1::timestamp)::date, date_trunc('day', $2::timestamp)::date, interval '1 day') AS period
) AS axis
SQL
rows = ActiveRecord::Base.connection.select_all(sql, nil, [[nil, @start_at], [nil, @end_at]])
rows.map { |row| { date: row['period'], value: row['value'].to_s } }
end
end
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