# frozen_string_literal: true

namespace :decidim do
  desc "Install migrations from Decidim to the app."
  task upgrade: [:choose_target_plugins, :"railties:install:migrations"]

  desc "Setup environment so that only decidim migrations are installed."
  task :choose_target_plugins do
    ENV["FROM"] = %w(
      decidim
      decidim_accountability
      decidim_admin
      decidim_assemblies
      decidim_blogs
      decidim_budgets
      decidim_comments
      decidim_consultations
      decidim_debates
      decidim_initiatives
      decidim_meetings
      decidim_pages
      decidim_participatory_processes
      decidim_proposals
      decidim_sortitions
      decidim_surveys
      decidim_system
      decidim_verifications
    ).join(",")
  end

  # RightToBeForgotten ------
  #
  # Load a single CSV file with user_ids list, and deletes all
  #   User records that exists and are not deleted in DB
  #
  # cmd: $ RAILS_ENV=<environment> bundle exec rails decidim:right_to_be_forgotten [FILE_PATH=<relative path to CSV file>]
  #
  # CSV file must be located within project root path
  #
  desc "Deletes User records by ID using a CSV file"
  task right_to_be_forgotten: :environment do
    log = ActiveSupport::Logger.new(Rails.root.join("log", "right_to_be_forgotten.log"))
    begin
      path = ENV["FILE_PATH"].presence || "tmp/forgotten_users.csv" # Good file
      file_path = Rails.root.join(path)
      csv_data = CSV.read(file_path, headers: false)
      users_count = csv_data.size
      puts "RightToBeForgotten: ------------------- #{Time.current}"
      log.info "RightToBeForgotten: ------------------- #{Time.current}"
      csv_data.each.with_index(1) do |row, index|
        # Each row, first element must be ID, others are useless
        user_id = row.first.presence || ""
        next unless user_id =~ /^\d+$/ # ID must be numeric only

        if (user = Decidim::User.find_by(id: user_id))
          if user.deleted?
            puts " #{index}/#{users_count} - [#{user_id}] User already deleted"
            log.info " #{index}/#{users_count} - [#{user_id}] User already deleted"
          else
            puts " #{index}/#{users_count} !! [#{user_id}] DELETING USER"
            log.info " #{index}/#{users_count} !! [#{user_id}] DELETING USER"
            Decidim::DestroyAccount.call(user, Decidim::DeleteAccountForm.from_params({})) # Delete user!
          end
        else
          puts " #{index}/#{users_count} - [#{user_id}] User not found"
          log.info " #{index}/#{users_count} - [#{user_id}] User not found"
        end
      end
    rescue CSV::MalformedCSVError
      puts " ERROR: [Malformed CSV] #{path}"
      log.info " ERROR: [Malformed CSV] #{path}"
    rescue Errno::ENOENT
      puts " ERROR: [File not found] #{path}"
      log.info " ERROR: [File not found] #{path}"
    rescue StandardError => e
      puts " ERROR: [Unexpected error] #{e.message}"
      log.info " ERROR: [Unexpected error] #{e.message}"
    ensure
      puts "RightToBeForgotten: Log file created at log/right_to_be_forgotten.log"
      puts "RightToBeForgotten: --------------- END #{Time.current}"
      log.info "RightToBeForgotten: --------------- END #{Time.current}"
    end
  end
end