#
# BitBake Toaster Implementation
#
# Copyright (C) 2014        Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

from django.views.decorators.cache import cache_control
from django.core.urlresolvers import reverse
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.http import HttpResponseBadRequest, HttpResponse
from django.utils import timezone
from django.utils.html import escape
from datetime import timedelta
from django.utils import formats
from toastergui.templatetags.projecttags import json as jsonfilter
import json
import os
import tempfile
import subprocess
import toastermain
from django.views.decorators.csrf import csrf_exempt


@csrf_exempt
def eventfile(request):
    """ Receives a file by POST, and runs toaster-eventreply on this file """
    if request.method != "POST":
        return HttpResponseBadRequest("This API only accepts POST requests. Post a file with:\n\ncurl -F eventlog=@bitbake_eventlog.json %s\n" % request.build_absolute_uri(reverse('eventfile')), content_type="text/plain;utf8")

    # write temporary file
    (handle, abstemppath) = tempfile.mkstemp(dir="/tmp/")
    with os.fdopen(handle, "w") as tmpfile:
        for chunk in request.FILES['eventlog'].chunks():
            tmpfile.write(chunk)
    tmpfile.close()

    # compute the path to "bitbake/bin/toaster-eventreplay"
    from os.path import dirname as DN
    import_script = os.path.join(DN(DN(DN(DN(os.path.abspath(__file__))))), "bin/toaster-eventreplay")
    if not os.path.exists(import_script):
        raise Exception("script missing %s" % import_script)
    scriptenv = os.environ.copy()
    scriptenv["DATABASE_URL"] = toastermain.settings.getDATABASE_URL()

    # run the data loading process and return the results
    importer = subprocess.Popen([import_script, abstemppath], stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=scriptenv)
    (out, err) = importer.communicate()
    if importer.returncode == 0:
        os.remove(abstemppath)
    return HttpResponse("== Retval %d\n== STDOUT\n%s\n\n== STDERR\n%s" % (importer.returncode, out, err), content_type="text/plain;utf8")