#!/usr/bin/env python
import hashlib
import subprocess
import sys

# Run command line and get output
def output(cmdline):
	p = subprocess.Popen(cmdline, shell=True, stdout=subprocess.PIPE)
	retval = p.communicate()[0]
	p.wait()
	return retval

# Read template page
template = file('download.html.in', 'r').read()

# Build replacement strings
version = output('cd ../master && git tag | tail -1').strip()
data = output('cd ../master && git show %s:youtube-dl' % version)
url = 'https://github.com/rg3/youtube-dl/raw/%s/youtube-dl' % version
md5sum = hashlib.md5(data).hexdigest()
sha1sum = hashlib.sha1(data).hexdigest()
sha256sum = hashlib.sha256(data).hexdigest()
template = template.replace('@PROGRAM_VERSION@', version)
template = template.replace('@PROGRAM_URL@', url)
template = template.replace('@PROGRAM_MD5SUM@', md5sum)
template = template.replace('@PROGRAM_SHA1SUM@', sha1sum)
template = template.replace('@PROGRAM_SHA256SUM@', sha256sum)
file('download.html', 'w').write(template)