#!/usr/bin/python3
"""
Subversion pre-commit hook which currently checks that the card-index
information is consistent and correctly given.
"""
#Author: Alain Hebert, Ecole Polytechnique, 2006.

import os, sys, pysvn

def main(repos, txn):
  # Recover the transaction data:
  print("pre-commit: repos=",repos)
  t = pysvn.Transaction( repos, txn )
  all_props = t.revproplist()
  message = t.revproplist()['svn:log']
  #
  # Validate the commit message:
  if message[:5] != 'issue':
    sys.stderr.write ("Please begin your commit message with 'issue' characters. message=%s...\n"% \
    message[:15])
    sys.exit(1)
  try:
    cardIndexNumber =  int(message[5:11])
  except:
    sys.stderr.write ("Please begin your commit message with 'issue' characters followed" \
    +" by a six-digit index. message=%s...\n"%message[:15])
    sys.exit(1)
  fileName = message[:11]
  #
  # List of card-index
  client = pysvn.Client()
  myls = client.ls('file://'+repos+'/'+'/issues/')
  maxIssue = -1
  for k in range(len(myls)):
    maxIssue=max(maxIssue, int(myls[k]['name'].split('/')[-1][5:]))
  if int(fileName[5:]) > maxIssue+1:
    sys.stderr.write ("The six-digit index (%d) must be <= %d. message=%s...\n"% \
    (int(fileName[5:]), maxIssue+1, message[:15]))
    sys.exit(1)
  sys.exit(0)

if __name__ == '__main__':
  if len(sys.argv) < 3:
    sys.stderr.write("Usage: %s repos txn\n" % (sys.argv[0]))
  else:
    main(sys.argv[1], sys.argv[2])