#!/usr/bin/env python

import hashlib
import os
import sys
import tarfile

import boto
from boto.s3.key import Key
from boto.exception import S3ResponseError

root = os.path.join(os.path.dirname(__file__), '..')
with open(os.path.join(root, 'cpanfile.snapshot')) as cpanfile:
    hash = hashlib.md5(cpanfile.read()).hexdigest()
wanted_filename = 'fixmystreet-local-%s.tgz' % hash

conn = boto.connect_s3()
bucket = conn.get_bucket('fixmystreet-bundle-cache')

k = Key(bucket)
k.key = wanted_filename
try:
    k.get_contents_to_filename(wanted_filename)
    if tarfile.is_tarfile(wanted_filename):
        tfile = tarfile.open(wanted_filename)
        tfile.extractall()
        sys.exit(0)
except S3ResponseError:
    os.remove(wanted_filename)

print "No cached copy found, running carton install..."
os.system('cpanm -q Carton')
os.system('carton install --deployment')