from time import sleep
from .. import db, logger
from ..decorators import background
from ..models import Job
import os
import shutil


@background
def delete_job(job_id, *args, **kwargs):
    app = kwargs['app']
    with app.app_context():
        job = Job.query.get(job_id)
        if job is None:
            return
        if job.status not in ['complete', 'failed']:
            job.status = 'canceling'
            db.session.commit()
            while job.status != 'canceled':
                # In case the daemon handled a job in any way
                if job.status != 'canceling':
                    job.status = 'canceling'
                    db.session.commit()
                sleep(1)
                db.session.refresh(job)
        path = os.path.join(app.config['NOPAQUE_STORAGE'], str(job.user_id),
                            'jobs', str(job.id))
        shutil.rmtree(path, ignore_errors=True)
        job.delete()


@background
def restart_job(job_id, *args, **kwargs):
    app = kwargs['app']
    with app.app_context():
        job = Job.query.get(job_id)
        if job is None:
            logger.warning('Job not found')
            return
        if job.status != 'failed':
            logger.warning('Job not failed')
            return
        logger.warning('Restarted')
        job_dir = os.path.join(app.config['NOPAQUE_STORAGE'],
                               str(job.user_id),
                               'jobs',
                               str(job.id))
        shutil.rmtree(os.path.join(job_dir, 'output'), ignore_errors=True)
        shutil.rmtree(os.path.join(job_dir, 'pyflow.data'), ignore_errors=True)
        job.restart()