#!/usr/bin/python
#
# Copyright 2007, Canonical
#
# GPL 3
#
#

import re
import os
import sys
import string
import subprocess

USAGE = 'Usage: revuput <location> <debuild options>'

def find_fixed_launchpad_bug(changesfile):
    changes = open(changesfile).readlines()
    for line in changes:
	if line.startswith("Launchpad-Bugs-Fixed"):
	    return line.split(":")[1].split()
    return []


def call_dput(location, changes):
    return os.system("dput %s %s" % (location, changes)) == 0


def lookup_dput_host(host):
    (dummy, output, dummy) = os.popen3("dput -H | grep ^%s" % host)
    text = output.read()
    if text:
	return text.split()[2]
    return ""


def call_debuild(options):
    return os.system("debuild -S -k%s %s" % \
	(os.getenv("DEBEMAIL"), \
	 string.join(options, " "))) == 0

def get_name_and_version():
    changelogfile = "debian/changelog"
    if not os.path.exists(changelogfile):
	print >> sys.stderr, "%s not found." % changelogfile
	sys.exit(1)
    
    head = open(changelogfile).readline()
    return re.findall(r'^(.*)\ \((.*)\).*', head)


def assemble_bug_comment_text(host, sourcepackage, version):
    return """A new version of %s was uploaded to fix this bug.

To review the current version, please run

  dget -x http://%s/%s_%s.dsc
""" % (sourcepackage, host, sourcepackage, version)


def file_bug_report(package, text):
    to = "new@bugs.launchpad.net"
    mailtext = """ affects distros/ubuntu/%s
 status confirmed
 subscribe %s"""
	      
    mail_process = subprocess.Popen(["mail", "-s", subject, to], 
				    stdin=subprocess.PIPE,
				    stdout=subprocess.PIPE)
    mail_process.communicate(report)


def main():
    location = ""
    options = []

    if len(sys.argv)<2:
	print >> sys.stderr, USAGE
	sys.exit(1)

    location = sys.argv[1]
    if len(sys.argv) > 2:
	options = sys.argv[2:]

    if not call_debuild(options):
	sys.exit(1)
    
    (sourcepackage, version) = get_name_and_version()[0]
    changesfile = "../%s_%s_source.changes" % (sourcepackage, version)
    if not os.path.exists(os.path.expanduser(changesfile)):
	print >>  sys.stderr, "%s does not exist." % \
	    os.path.expanduser(changesfile)
	sys.exit(1)

    fixed_lp_bugs = find_fixed_launchpad_bug(changesfile)
    host = lookup_dput_host(location) 

    print assemble_bug_comment_text(host, sourcepackage, version)
    if not call_dput(location, changesfile):
	sys.exit(1)

    
if __name__ == '__main__':
	main()