# frozen_string_literal: true

# Realiza el deploy de un sitio
class DeployJob < ApplicationJob
  class DeployException < StandardError; end
  class DeployTimedOutException < DeployException; end
  class DeployAlreadyRunningException < DeployException; end

  discard_on ActiveRecord::RecordNotFound

  # Lanzar lo antes posible
  self.priority = 10

  def handle_error(error)
    case error
    when DeployAlreadyRunningException then retry_in 1.minute
    when DeployTimedOutException then expire
    else super
    end
  end

  # rubocop:disable Metrics/MethodLength
  def perform(site, notify: true, time: Time.now, output: false)
    @output = output

    ActiveRecord::Base.connection_pool.with_connection do
      @site = Site.find(site)

      # Si ya hay una tarea corriendo, aplazar esta.  Si estuvo
      # esperando más de 10 minutos, recuperar el estado anterior.
      #
      # Como el trabajo actual se aplaza al siguiente, arrastrar la
      # hora original para poder ir haciendo timeouts.
      if @site.building?
        notify = false

        if 10.minutes.ago >= time
          raise DeployTimedOutException,
                "#{@site.name} la tarea estuvo más de 10 minutos esperando, volviendo al estado original"
        else
          raise DeployAlreadyRunningException
        end
      end

      @deployed = {}
      @site.update status: 'building'
      @site.deployment_list.each do |d|
        begin
          raise DeployException, 'Una dependencia falló' if failed_dependencies? d

          status = d.deploy(output: @output)
          seconds = d.build_stats.last.try(:seconds) || 0
          size = d.size
          urls = d.urls.map do |url|
            URI.parse url
          rescue URI::Error
            nil
          end.compact

          unless d == @site.deployment_list.last && !status
            raise DeployException, 'Falló la compilación'
          end
        rescue StandardError => e
          status = false
          seconds ||= 0
          size ||= 0
          # XXX: Hace que se vea la tabla
          urls ||= [nil]

          notify_exception e, d
        end

        @deployed[d.type.underscore.to_sym] = {
          status: status,
          seconds: seconds,
          size: size,
          urls: urls
        }
      end

      return unless @output

      puts (Terminal::Table.new do |t|
        t << (%w[type] + @deployed.values.first.keys)
        t.add_separator
        @deployed.each do |type, row|
          t << ([type.to_s] + row.values)
        end
      end)
    ensure
      if @site.present?
        @site.update status: 'waiting'

        notify_usuaries if notify

        puts "\a" if @output
      end
    end
  end
  # rubocop:enable Metrics/MethodLength

  private

  # Detecta si un método de publicación tiene dependencias fallidas
  #
  # @param :deploy [Deploy]
  # @return [Boolean]
  def failed_dependencies?(deploy)
    failed_dependencies(deploy).present?
  end

  # Obtiene las dependencias fallidas de un deploy
  #
  # @param :deploy [Deploy]
  # @return [Array]
  def failed_dependencies(deploy)
    deploy.class::DEPENDENCIES & (@deployed.reject do |_, v|
      v[:status]
    end.keys)
  end

  # @param :exception [StandardError]
  # @param :deploy [Deploy]
  def notify_exception(exception, deploy = nil)
    data = {
      site: @site.id,
      deploy: deploy&.type,
      log: deploy&.build_stats&.last&.log,
      failed_dependencies: (failed_dependencies(deploy) if deploy)
    }

    ExceptionNotifier.notify_exception(exception, data: data)
  end

  def notify_usuaries
    @site.roles.where(rol: 'usuarie', temporal: false).pluck(:usuarie_id).each do |usuarie|
      DeployMailer.with(usuarie: usuarie, site: @site.id)
                  .deployed(@deployed)
                  .deliver_now
    end
  end
end