from app.decorators import admin_required
from app.models import Job, JobInput, JobResult, JobStatus
from flask import (
    abort,
    flash,
    redirect,
    render_template,
    send_from_directory,
    url_for
)
from flask_login import current_user, login_required
from . import bp
from . import tasks
import os


@bp.route('/<hashid:job_id>')
@login_required
def job(job_id):
    job = Job.query.get_or_404(job_id)
    if not (job.user == current_user or current_user.is_administrator()):
        abort(403)
    return render_template(
        'jobs/job.html.j2',
        job=job,
        title='Job'
    )


@bp.route('/<hashid:job_id>/delete')
@login_required
def delete_job(job_id):
    job = Job.query.get_or_404(job_id)
    if not (job.user == current_user or current_user.is_administrator()):
        abort(403)
    tasks.delete_job(job_id)
    flash(f'Job "{job.title}" marked for deletion', 'job')
    return redirect(url_for('main.dashboard'))


@bp.route('/<hashid:job_id>/inputs/<hashid:job_input_id>/download')
@login_required
def download_job_input(job_id, job_input_id):
    job_input = JobInput.query.filter(
        JobInput.job_id == job_id,
        JobInput.id == job_input_id
    ).first_or_404()
    if not (
        job_input.job.user == current_user
        or current_user.is_administrator()
    ):
        abort(403)
    return send_from_directory(
        as_attachment=True,
        attachment_filename=job_input.filename,
        directory=os.path.dirname(job_input.path),
        filename=os.path.basename(job_input.path)
    )


@bp.route('/<hashid:job_id>/restart')
@login_required
@admin_required
def restart(job_id):
    job = Job.query.get_or_404(job_id)
    if job.status not in [JobStatus.COMPLETED, JobStatus.FAILED]:
        flash(
            f'Can\'t restart job "{job.title}": Status is not "Completed/Failed"',  # noqa
            category='error'
        )
    else:
        tasks.restart_job(job_id)
        flash(f'Job "{job.title}" marked to get restarted', category='job')
    return redirect(url_for('.job', job_id=job_id))


@bp.route('/<hashid:job_id>/results/<hashid:job_result_id>/download')
@login_required
def download_job_result(job_id, job_result_id):
    job_result = JobResult.query.filter(
        JobResult.job_id == job_id,
        JobResult.id == job_result_id
    ).first_or_404()
    if not (
        job_result.job.user == current_user
        or current_user.is_administrator()
    ):
        abort(403)
    return send_from_directory(
        as_attachment=True,
        attachment_filename=job_result.filename,
        directory=os.path.dirname(job_result.path),
        filename=os.path.basename(job_result.path)
    )