module ExpireHostsNotifications

# File lib/expire_hosts_notifications.rb, line 4
def admin_email
  [(Setting[:host_expiry_email_recipients] || Setting[:administrator])]
end

# File lib/expire_hosts_notifications.rb, line 12
def catch_delivery_errors(message, hosts = [])
  yield
rescue => error
  message = "#{message} for Hosts #{hosts.map(&:name).to_sentence}"
  Foreman::Logging.exception(message, error)
end

# File lib/expire_hosts_notifications.rb, line 8
def days_to_delete_after_expired
  Setting[:days_to_delete_after_host_expiration].to_i
end

# File lib/expire_hosts_notifications.rb, line 20
def delete_expired_hosts
  deletable_hosts     = Host.expired_past_grace_period
  failed_delete_hosts = []
  deleted_hosts       = []
  deletable_hosts.each do |deletable_host|
    Rails.logger.info "Deleting expired host #{deletable_host}"
    deletable_host.audit_comment = _('Destroyed since it got expired on %s') % deletable_host.expired_on
    if deletable_host # .destroy
      deleted_hosts << deletable_host
    else
      failed_delete_hosts << deletable_host
    end
  end
  unless deleted_hosts.empty?
    ExpireHostsNotifications.hosts_by_user(deleted_hosts).each do |user_id, hosts_hash|
      catch_delivery_errors(_('Failed to deliver deleted hosts notification'), deleted_hosts) do
        ExpireHostsMailer.deleted_hosts_notification(hosts_hash['email'], hosts_hash['hosts']).deliver
      end
    end
  end
  return if failed_delete_hosts.empty?
  catch_delivery_errors(_('Failed to deliver deleted hosts notification failed status'), failed_delete_hosts) do
    ExpireHostsMailer.failed_to_delete_hosts_notification(self.admin_email, failed_delete_hosts).deliver
  end
end

# File lib/expire_hosts_notifications.rb, line 78
def deliver_expiry_warning_notification(num = 1) # notify1_days_before_expiry
  return unless [1, 2].include?(num)
  days_before_expiry = Setting["notify#{num}_days_before_host_expiry"].to_i
  expiry_date        = (Date.today + days_before_expiry)
  notifiable_hosts   = Host.with_expire_date(expiry_date)
  unless notifiable_hosts.empty?
    hosts_by_user(notifiable_hosts).each do |user_id, hosts_hash|
      catch_delivery_errors(_('Failed to deliver expiring hosts notification'), notifiable_hosts) do
        ExpireHostsMailer.expiry_warning_notification(hosts_hash['email'], expiry_date, hosts_hash['hosts']).deliver
      end
    end
  end
end

# File lib/expire_hosts_notifications.rb, line 92
def hosts_by_user(hosts)
  emails     = self.admin_email
  hosts_hash = {}
  hosts.each do |host|
    if host.owner_type == 'User'
      unless hosts_hash.key?(host.owner_id.to_s)
        email_recipients = emails + [host.owner.mail]
        hosts_hash[host.owner_id.to_s] = { 'id' => host.owner_id, 'name' => host.owner.name, 'email' => email_recipients, 'hosts' => [] }
      end
      hosts_hash[host.owner_id.to_s]['hosts'] << host
    elsif host.owner_type == 'Usergroup'
      host.owner.users.each do |owner|
        unless hosts_hash.key?(owner.id.to_s)
          email_recipients = emails + [owner.mail]
          hosts_hash[owner.id.to_s] = { 'id' => owner.id, 'name' => owner.name, 'email' => email_recipients, 'hosts' => [] }
        end
        hosts_hash[owner.id.to_s]['hosts'] << host
      end
    else
      email = (!emails.empty? ? emails : [Setting[:administrator]])
      unless hosts_hash.key?(owner.id.to_s)
        hosts_hash['admin'] = { 'id' => nil, 'name' => 'Admin', 'email' => email, 'hosts' => [] }
      end
      hosts_hash['admin']['hosts'] << host
    end
  end
  hosts_hash
end

# File lib/expire_hosts_notifications.rb, line 46
def stop_expired_hosts
  stoppable_hosts   = Host.expired
  failed_stop_hosts = []
  stopped_hosts     = []
  stoppable_hosts.each do |stoppable_host|
    next unless stoppable_host.supports_power_and_running?
    Rails.logger.info "Powering down expired host in grace period #{stoppable_host}"
    host_status = begin
      stoppable_host.power.stop
    rescue
      false
    end
    if host_status
      stopped_hosts << stoppable_host
    else
      failed_stop_hosts << stoppable_host
    end
  end
  unless stopped_hosts.empty?
    delete_date = (Date.today + self.days_to_delete_after_expired.to_i)
    hosts_by_user(stopped_hosts).each do |user_id, hosts_hash|
      catch_delivery_errors(_('Failed to deliver stopped hosts notification'), stopped_hosts) do
        ExpireHostsMailer.stopped_hosts_notification(hosts_hash['email'], delete_date, hosts_hash['hosts']).deliver
      end
    end
  end
  return if failed_stop_hosts.empty?
  catch_delivery_errors(_('Failed to deliver stopped hosts notification failed status'), failed_stop_hosts) do
    ExpireHostsMailer.failed_to_stop_hosts_notification(self.admin_email, failed_stop_hosts).deliver
  end
end