from .. import db, socketio
from ..decorators import background
from ..models import Job


@background
def delete_job(job_id, *args, **kwargs):
    with kwargs['app'].app_context():
        job = Job.query.get(job_id)
        if job is None:
            raise Exception('Job {} not found'.format(job_id))
        event = 'user_{}_patch'.format(job.user_id)
        jsonpatch = [{'op': 'remove', 'path': '/jobs/{}'.format(job.id)}]
        room = 'user_{}'.format(job.user_id)
        job.delete()
        db.session.commit()
        socketio.emit(event, jsonpatch, room=room)


@background
def restart_job(job_id, *args, **kwargs):
    with kwargs['app'].app_context():
        job = Job.query.get(job_id)
        if job is None:
            raise Exception('Job {} not found'.format(job_id))
        try:
            job.restart()
        except Exception:
            pass
        else:
            db.session.commit()
            event = 'user_{}_patch'.format(job.user_id)
            jsonpatch = [{'op': 'replace', 'path': '/jobs/{}/end_date'.format(job.id), 'value': job.end_date.timestamp()},  # noqa
                         {'op': 'replace', 'path': '/jobs/{}/status'.format(job.id), 'value': job.status}]  # noqa
            room = 'user_{}'.format(job.user_id)
            socketio.emit(event, jsonpatch, room=room)