# frozen_string_literal: true

class AnnualReport
  include DatabaseHelper

  SOURCES = [
    AnnualReport::Archetype,
    AnnualReport::TopStatuses,
    AnnualReport::TimeSeries,
    AnnualReport::TopHashtags,
  ].freeze

  SCHEMA = 2

  def self.table_name_prefix
    'annual_report_'
  end

  def self.current_campaign
    return unless Mastodon::Feature.wrapstodon_enabled?

    datetime = Time.now.utc
    datetime.year if datetime.month == 12 && (10..31).cover?(datetime.day)
  end

  def initialize(account, year)
    @account = account
    @year = year
  end

  def eligible?
    with_read_replica do
      SOURCES.all? { |klass| klass.new(@account, @year).eligible? }
    end
  end

  def generate
    return if GeneratedAnnualReport.exists?(account: @account, year: @year)

    GeneratedAnnualReport.create(
      account: @account,
      year: @year,
      schema_version: SCHEMA,
      data: data,
      share_key: SecureRandom.hex(8)
    )
  end

  private

  def data
    with_read_replica do
      SOURCES.each_with_object({}) { |klass, hsh| hsh.merge!(klass.new(@account, @year).generate) }
    end
  end
end