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#     http://www.apache.org/licenses/LICENSE-2.0
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module Shell
  module Commands
    class DropAll < Command
      def help
        return <<-EOF
Drop all of the tables matching the given regex:

hbase> drop_all 't.*'
hbase> drop_all 'ns:t.*'
hbase> drop_all 'ns:.*'
EOF
      end

      def command(regex)
        list = admin.list(regex)
        count = list.size
        list.each do |table|
          formatter.row([ table ])
        end
        puts "\nDrop the above #{count} tables (y/n)?" unless count == 0
        answer = 'n'
        answer = gets.chomp unless count == 0
        puts "No tables matched the regex #{regex.to_s}" if count == 0
        return unless answer =~ /y.*/i
        failed = admin.drop_all(regex)
        puts "#{count - failed.size} tables successfully dropped"
        puts "#{failed.size} tables not dropped due to an exception: #{failed.join ','}" unless failed.size == 0
      end
    end
  end
end
