class MysqlConn

# File lib/mysqlconn.rb, line 19
def initialize(mode)
  @mode = mode
  @verbose = false
end

# File lib/mysqlconn.rb, line 24
def mode_command
  case mode
    when :MYSQL
      "mysql"
    when :MYSQLDUMP
      "mysqldump"
    else
      raise "Unknown mode: #{mode}"
  end
end

# File lib/mysqlconn.rb, line 35
def mode_default_args(args)
  case mode
    when :MYSQL
      "--prompt=\"\\u@#{db_key} [\\d]> \" " <<
      if config['config'] && config['config']['default_arg'] && config['config']['default_arg']['mysql']
        config['config']['default_arg']['mysql']
      else
        ""
      end

    when :MYSQLDUMP
      if config['config'] && config['config']['default_arg'] && config['config']['default_arg']['mysqldump']
        config['config']['default_arg']['mysqldump']
      else
        ""
      end
    else
      raise "Unknown mode: #{mode}"
  end
end

# File lib/mysqlconn.rb, line 56
def run(args)

  @db_key = args.shift || raise('no db key provided. Usage mysqlconn db_key [mysql opts]*')

  @config = begin
    File.open(CONFIG_LOCATION, 'r') do |f|
      YAML.load(f)
    end
  rescue Errno::ENOENT => e
    raise("No config found. Please follow instructions for creating #{CONFIG_LOCATION}")
  end
  raise("Config file is world readable. Exiting...") if File.stat(CONFIG_LOCATION).world_readable?

  if db_key == '-v'
    @verbose = true
    @db_key = args.shift
  end
  if db_key == '-l'
    filter = /.*#{args.shift||'.*'}.*/
    config.keys.each do |k|
      if k != 'config' && filter =~ k
        puts k
      end
    end
    exit(0)
  end
  if db_key == '-c'
    @db_key = args.shift || raise('no db key provided. Usage for configuration: mysqlconn -c db_key')
    db = config[db_key] || raise("No #{db_key} found")
    puts JSON.pretty_generate(config[db_key])
    exit(0)
  end


  db = config[db_key] || raise("No #{db_key} found")

  db['host'] || raise("No #{db_key}.host found")

  command = ""

  command << "MYSQL_PWD=#{db['password']} " if db['password']

  command << "#{mode_command} -h #{db['host']} #{mode_default_args(args)}"

  command << " -P #{db['port']}" if db['port']
  command << " -u #{db['user']}" if db['user']
  if db['database'] && mode == :MYSQL
    case mode
      when :MYSQL
        command << " -D #{db['database']}"
      when :MYSQLDUMP
        command << " #{db['database']}"
    end
  end
  unless args.empty?
    command << " "
    command << args.map{|s| "'#{s}'"}.join(' ')
  end

  STDERR.puts command if verbose
  exec(command)

end