#!/usr/bin/env python

# Updates static files for production.

from __future__ import absolute_import

import os
import subprocess
import optparse
import sys

# We need settings so we can figure out where the prod-static directory is.
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.settings'
from django.conf import settings

parser = optparse.OptionParser()
parser.add_option('--prev-deploy', nargs=1, metavar='DIR',
                  help='A previous deploy from which to reuse files if possible')
(options, args) = parser.parse_args()
prev_deploy = options.prev_deploy

os.chdir(settings.DEPLOY_ROOT)

# Redirect child processes' output to a log file (most recent run only).
fp = open('update-prod-static.log', 'w')

# Compile Handlebars templates and minify JavaScripts.
subprocess.check_call(['python', 'tools/minify-js']
                      + (['--prev-deploy', prev_deploy] if prev_deploy else []),
                      stdout=fp, stderr=fp)

# Collect the files that we're going to serve.
subprocess.check_call(['python', './manage.py', 'collectstatic', '--noinput'],
                      stdout=fp, stderr=fp)

# Move the source maps out of the serve/ directory and into their
# proper place.
subprocess.check_call(['rm', '-rf', 'prod-static/source-map'],
                      stdout=fp, stderr=fp)
subprocess.check_call(['mkdir', '-p', 'prod-static'],  # Needed if DEPLOYED
                      stdout=fp, stderr=fp)
subprocess.check_call(['mv', os.path.join(settings.STATIC_ROOT, 'source-map'),
                             'prod-static/source-map'],
                      stdout=fp, stderr=fp)

fp.close()