#!/opt/deis/controller/venv/bin/python
import os
import sys
import json

if __name__ == '__main__':
    # prepare pythonpath and django settings
    base_path = os.path.abspath(os.path.join(__file__, '..', '..'))
    sys.path.insert(0, base_path)
    os.environ['DJANGO_SETTINGS_MODULE'] = 'deis.settings'
    from api import models
    # deserialize build
    inp = sys.stdin.read()
    build = json.loads(inp)
    # pull username out of ssh key
    ssh_key = build.pop('ssh_key')
    username = ssh_key.split('_')[0]
    from django.contrib.auth.models import User
    u=User.objects.get(username=username)
    build['owner'] = u
    # lookup formation
    formation_id = build.pop('formation')
    formation = models.Formation.objects.get(
        owner=u, id=formation_id)
    build['formation'] = formation
    # create the new build
    b = models.Build.objects.create(**build)
    # send release signal
    models.release_signal.send(sender=b,
        build=b, formation=formation, user=u)
    # pull the formation again with the new release
    formation = models.Formation.objects.get(
        owner=u, id=formation_id)
    # calculate the formation and converge it
    databag = formation.calculate()
    formation.converge(databag)
    # return a json dump of the databag
    sys.stdout.write(json.dumps(databag))
    sys.stdout.flush()
    sys.exit(0)