#!/usr/bin/env python

""" mkpydeps 0.2

** mkpydeps has been replaced by homebrew-pypi-poet
   https://github.com/tdsmith/homebrew-pypi-poet
   https://pypi.python.org/pypi/homebrew-pypi-poet

Invoked like "mkpydeps foo" for some package foo **which is presently
installed in sys.path**, determines which packages foo and its dependents
depend on, downloads them from pypi and computes their checksums, and
spits out Homebrew resource stanzas.

`pip install tl.eggdeps` first, please.
"""

import os, sys, json, urllib2
from hashlib import sha1
import tl.eggdeps.graph

graph = tl.eggdeps.graph.Graph()
graph.from_specifications([sys.argv[1]])
deps = set(graph.keys()) - set([sys.argv[1]])

for dep in deps:
    f = urllib2.urlopen("http://pypi.python.org/pypi/{}/json".format(dep))
    j = json.load(f)
    f.close()
    print '  resource "{}" do'.format(dep)
    for i in j['urls']:
        if i['packagetype'] == 'sdist':
            url = i['url']
            print '    url "{}"'.format(url)
            f = urllib2.urlopen(url)
            checksum = sha1(f.read()).hexdigest()
            print '    sha1 "{}"'.format(checksum)
            break
    print '  end'
    print

print "===\n"
print '    ENV.prepend_create_path "PYTHONPATH", libexec/"vendor/lib/python2.7/site-packages"'
print '    %w[' + ' '.join(deps) + '].each do |r|'
print '      resource(r).stage do'
print '        system "python", *Language::Python.setup_install_args(libexec/"vendor")'
print '      end'
print '    end'