#!/usr/bin/env python

"""
Dirty script for building package for PPA
by WangLu
2011.01.13

modified for pdf2htmlEX
2012.08.28
"""


import os
import sys
import re
import time

package='pdf2htmlex'
SUPPORTED_DIST=('precise', 'quantal', 'raring')
dist_pattern=re.compile('|'.join(['\\) '+i for i in SUPPORTED_DIST]))

print 'Generating version...'

try:
    rev = open('.git/refs/heads/master').read()[:5]
except:
    print 'Cannot get revision number'
    sys.exit(-1)

today_timestr = time.strftime('%Y%m%d%H%M')
projectdir=os.getcwd()
try:
    version = re.findall(r'set\(PDF2HTMLEX_VERSION\s*"([^"]*)"\)', open('CMakeLists.txt').read())[0]
except:
    print 'Cannot get package name and version number'
    sys.exit(-1)

deb_version = version+'-1~git'+today_timestr+'r'+rev
full_deb_version = deb_version+'-0ubuntu1'

#check if we need to update debian/changelog
with open('debian/changelog') as f:
    if re.findall(r'\(([^)]+)\)', f.readline())[0] == full_deb_version:
        print
        print 'No need to update debian/changelog, skipping'
    else:
        print
        print 'Writing debian/changelog'
        if os.system('dch -v "%s"' % (full_deb_version,)) != 0:
            print 'Failed when updating debian/changelog'
            sys.exit(-1)

    f.seek(0)
    #check dist mark of changelog
    changelog = f.read()
    m = dist_pattern.search(changelog)
    if m is None or m.pos >= changelog.find('\n'):
        print 'Cannot locate the dist name in the first line of changelog'
        sys.exit(-1)

print
print 'Preparing build ...'
# handling files
if os.system('(rm CMakeCache.txt || true) && cmake . && make dist') != 0:
    print 'Failed in creating tarball'
    sys.exit(-1)

orig_tar_filename = package+'-'+version+'.tar.bz2'
if os.system('test -e %s && cp %s ../build-area' % (orig_tar_filename, orig_tar_filename)) != 0:
    print 'Cannot copy tarball file to build area'
    sys.exit(-1)

deb_orig_tar_filename = package+'_'+deb_version+'.orig.tar.bz2'

try:
    os.chdir('../build-area')
except:
    print 'Cannot find ../build-area'
    sys.exit(-1)

# remove old dir
os.system('rm -rf %s' % (package+'-'+version,))

if os.system('mv %s %s && tar -xvf %s' % (orig_tar_filename, deb_orig_tar_filename, deb_orig_tar_filename)) != 0:
    print 'Cannot extract tarball'
    sys.exit(-1)

try:
    os.chdir(package+'-'+version)
except:
    print 'Cannot enter project dir'
    sys.exit(-1)

os.system('cp -r %s/debian .' % (projectdir,))

for cur_dist in SUPPORTED_DIST:
    print
    print 'Building for ' + cur_dist + ' ...'
    # substitute distribution name 
    with open('debian/changelog', 'w') as f:
        f.write(dist_pattern.sub('~%s1) %s' % (cur_dist, cur_dist), changelog, 1))

    # building
    if os.system('debuild -S -sa') != 0:
        print 'Failed in debuild'
        sys.exit(-1)

    """
    print
    sys.stdout.write('Everything seems to be good so far, upload?(y/n)')
    sys.stdout.flush()
    ans = raw_input().lower()
    while ans not in ['y', 'n']:
        sys.stdout.write('I don\'t understand, enter \'y\' or \'n\':')
        ans = raw_input().lower()

    if ans == 'n':
        print 'Skipped.'
        sys.exit(0)
    """

    print 'Uploading'   
    if os.system('dput ppa:coolwanglu/%s ../%s' % (package, package+'_'+full_deb_version+'~'+cur_dist+'1_source.changes')) != 0:
        print 'Failed in uploading by dput'
        sys.exit(-1)

print 'Build area not cleaned.'
print 'All done. Cool!'