#/bin/bin/env python
"""blah blah blah"""
from __future__ import print_function

def listCatalogDir(self, directoryLFN, printOutput=False):
  """lists the contents of a directory in the DFC
  example usage: dirac.listCatalogDir("/lz/data/test", printOutput=True)
  param directoryLFN: LFN(s) of the directory to be listed
  type directoryLFN: string or list in LFN format
  param printOutput: prints output in a more human readable form
  type printOutput: Boolean"""
  ret = self._checkFileArgument(directoryLFN, 'LFN')
  if not ret['OK']:
    return ret
  fc = FileCatalog()
  res = fc.listDirectory(directoryLFN)
  if not res['OK']:
    self.log.warn(res['Message'])
    return res
  # treat a string as array with a single entry
  if isinstance(directoryLFN, str):
    directoryLFN = [directoryLFN]
  if not res['Value']['Successful']:
    self.log.warn("listCatalogDir failed for all LFNs (%s). Giving up." %directoryLFN)
    return res
  # now deal with the case where *some* of the LFNs are OK
  if res['Value']['Failed']:
    self.log.warn("listCatalogDir failed for: %s" %(res['Value']['Failed']))
    # do not return, we still want to process the good ones
  if printOutput:
    for directory in directoryLFN:
      if directory in res['Value']['Successful']:
        print("Listing content of: %s" %directory)
        subdirs = res['Value']['Successful'][directory]['SubDirs']
        files = res['Value']['Successful'][directory]['Files']
        print("Subdirectories:")
        print('\n'.join("{}".format(k, v) for k, v in subdirs.items()))
        print("Files:")
        print('\n'.join("{}".format(k, v) for k, v in files.items()))
  # do I let the user decide ?
  # del (res['Value']['Failed'])
  return res