class Requirements

# File lib/requirements.rb, line 10
def valid?
  config_files && packages
end

# File lib/requirements.rb, line 16
def config_files
  CONFIG_FILES.each do |config_file|
    file = "debian/#{ config_file }"
    unless File.exist?(file)
      puts "There are no such file #{ file }"
      return false
    end
  end
end

# File lib/requirements.rb, line 26
def packages
  # Читаем control и ставим зависимости Build-Depends:
  depends,not_installed = [], []
  lines = File.readlines('debian/control')
  lines.each do |line|
    if line.start_with?('Build-Depends:')
      depends = (line.sub('Build-Depends:', '').gsub(/\(.*\)/, '').split(','))
    end
  end
  depends.each do |package|
    command = "dpkg-query -l #{ package.strip } 2>&1 |awk 'END { if($1==\"ii\") exit 0; else exit 1; }'"
    unless SystemGateway.perform_with_exit_code(command)
      not_installed.push(package)
    end
  end
  if not_installed.any?
    puts "Installing packages...."
    not_installed.each do |package|
      command = "apt-get install -y -q #{ package }"
      unless SystemGateway.perform_with_exit_code(command)
        puts "Error occurred during install package: #{ package }"
        return false
      end
    end
  end

  true
end