#!/usr/bin/env python
"""Simple svn commit wrapper which emails a given list of people.

Usage:

  ipsvnc [args]

This is equivalent to doing

  svn commit [args]

If the commit operation is successful (the script asks for confirmation), a
hardwired list of maintainers is informed of the commit.

This is a poor-man's substitute for a proper svn post-commit hook with an
ipython-svn email list, which we're waiting to get soon.  It should be removed
once that facility is in place.

This only works on a unix box which can send mail by itself."""

import os
import commands
import sys
import time

# Package maintainers to be alerted
maintainers = ['fperez@colorado.edu', 'rkern@ucsd.edu', 'antont@an.org',
               'tsanko@gmail.com']

#maintainers = ['fperez@colorado.edu']  # dbg

# Assemble command line back, before passing it to svn
svnargs = []
for arg in sys.argv[1:]:
    if ' ' in arg:
        svnargs.append('"%s"' % arg)
    else:
        svnargs.append(arg)
svnargs = ' '.join(svnargs)

#print 'SVN args: <%s>' % svnargs; sys.exit()  # dbg

# perform commit
os.system('svn commit %s' % svnargs)
svntime = time.asctime()
svnstatus = commands.getoutput('svn log -r COMMITTED')

# Confirm with user (trying to get the status from the svn commit blocks
# silently, I don't care to debug it)
ans = raw_input('If commit was succesful, proceed with email notification? [Y/n]')
if ans.lower().startswith('n'):
    print "Exiting now..."
    sys.exit(1)
else:
    print "OK.  Emailing maintainers..."

# Send emails
subject = "[IPython SVN] New commit performed by %s" % os.getlogin()
body = """\
Commit performed at: %s

SVN arguments used: %s

Current SVN status after last commit:
%s""" % (svntime,svnargs,svnstatus)

for maint in maintainers:
    print "Emailing",maint
    os.system('echo "%s" | mail -s "%s" %s' % (body, subject,maint))