# Copyright (c) 2012 - Rackspace Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

import datetime
import os
import sys

try:
    import ujson as json
except ImportError:
    try:
        import simplejson as json
    except ImportError:
        import json

POSSIBLE_TOPDIR = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
                                                os.pardir, os.pardir))
if os.path.exists(os.path.join(POSSIBLE_TOPDIR, 'stacktach')):
    sys.path.insert(0, POSSIBLE_TOPDIR)

from stacktach import models
from stacktach import views

if __name__ != '__main__':
    sys.exit(1)

REBUILD_START = 'compute.instance.rebuild.start'
REBUILD_END = 'compute.instance.rebuild.end'


def add_past_usage(raws):

    count = raws.count()
    processed = 0
    print "%s events to be processed" % count
    last_update = datetime.datetime.utcnow()
    for raw in raws:
        json_dict = json.loads(raw.json)
        views.aggregate_usage(raw, json_dict[1])
        processed += 1
        if processed % 50 == 0:
            next_update = last_update + datetime.timedelta(seconds=30)
            if datetime.datetime.utcnow() > next_update:
                m = (processed, count - processed,
                     (float(processed) / count)*100)
                print "%s processed, %s to go, %.2f percent done" % m
                last_update = datetime.datetime.utcnow()
    print "completed processing %s events" % count


start_raws = models.RawData.objects.filter(event=REBUILD_START)
add_past_usage(start_raws)
end_raws = models.RawData.objects.filter(event=REBUILD_END)
add_past_usage(end_raws)