import os
import copy
import json
import pytz
import webapp2
import datetime
import bson.objectid
import webapp2_extras.routes

from . import core
from . import jobs
from handlers import listhandler
from handlers import userhandler
from handlers import grouphandler
from handlers import containerhandler
from handlers import collectionshandler

#regexes used in routing table:
routing_regexes = {
    'group_id_re': '[0-9a-z][0-9a-z.@_-]{0,30}[0-9a-z]',
    'cid_re': '[0-9a-f]{24}',
    'site_re': '[0-9a-z]{0,24}',
    'user_id_re': '[0-9a-z.@_-]*',
    'cont_name_re': 'projects|sessions|acquisitions|collections',
    'tag_re': '[^/]{3,24}',
    'filename_re': '[^/]{3,60}',
    'note_id_re': '[0-9a-f]{24}'
}

def _format(route):
    return route.format(**routing_regexes)

routes = [
    webapp2.Route(
        r'/api',
        core.Core
    ),
    webapp2_extras.routes.PathPrefixRoute(r'/api', [
        webapp2.Route(
            r'/download',
            core.Core, handler_method='download', methods=['GET', 'POST'], name='download'
        ),
        webapp2.Route(
            r'/reaper',
            core.Core, handler_method='reaper', methods=['POST']
        ),
        webapp2.Route(
            r'/sites',
            core.Core, handler_method='sites', methods=['GET']
        )
    ]),
    webapp2.Route(
        r'/api/users',
        userhandler.UserHandler, handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        r'/api/users',
        userhandler.UserHandler, methods=['POST']
    ),
    webapp2_extras.routes.PathPrefixRoute(r'/api/users', [
        webapp2.Route(
            r'/self',
            userhandler.UserHandler, handler_method='self', methods=['GET']
        ),
        webapp2.Route(
            r'/roles',
            userhandler.UserHandler, handler_method='roles', methods=['GET']
        ),
        webapp2.Route(
            _format(r'/<_id:{user_id_re}>'),
            userhandler.UserHandler, name='user'
        ),
        webapp2.Route(
            _format(r'/<uid:{user_id_re}>/groups'),
            grouphandler.GroupHandler, handler_method='get_all', methods=['GET'], name='groups'
        ),
    ]),
    webapp2.Route(
        r'/api/jobs',
        jobs.Jobs
    ),
    webapp2_extras.routes.PathPrefixRoute(r'/api/jobs', [
        webapp2.Route(
            r'/next',
            jobs.Jobs, handler_method='next', methods=['GET']
        ),
        webapp2.Route(
            r'/count',
            jobs.Jobs, handler_method='count', methods=['GET']
        ),
        webapp2.Route(
            r'/addTestJob',
            jobs.Jobs, handler_method='addTestJob', methods=['GET']
        ),
        webapp2.Route(
            r'/<:[^/]+>',
            jobs.Job,  name='job'
        ),
    ]),
    webapp2.Route(
        r'/api/groups',
        grouphandler.GroupHandler, handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        r'/api/groups',
        grouphandler.GroupHandler, methods=['POST']
    ),
    webapp2.Route(
        _format(r'/api/groups/<_id:{group_id_re}>'),
        grouphandler.GroupHandler, name='group'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:groups>/<cid:{group_id_re}>/<list_name:roles>'),
        listhandler.ListHandler, name='group'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:groups>/<cid:{group_id_re}>/<list_name:roles>/<site:{site_re}>/<_id:{user_id_re}>'),
        listhandler.ListHandler, name='group', methods=['GET', 'PUT', 'DELETE']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:tags>'),
        listhandler.ListHandler, methods=['POST'], name='tags_post'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:tags>/<value:{tag_re}>'),
        listhandler.ListHandler, name='tags'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:files>'),
        listhandler.FileListHandler, name='files_post', methods=['POST']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:files>/<filename:{filename_re}>'),
        listhandler.FileListHandler, name='files'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:collections|projects>/<cid:{cid_re}>/<list_name:permissions>'),
        listhandler.PermissionsListHandler, name='perms_post', methods=['POST']
    ),
    webapp2.Route(
        _format(
            r'/api/<cont_name:collections|projects>/<cid:{cid_re}>' +
            r'/<list_name:permissions>/<site:{site_re}>/<_id:{user_id_re}>'
        ),
        listhandler.PermissionsListHandler, name='perms'
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:notes>'),
        listhandler.NotesListHandler, name='notes_post', methods=['POST']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>/<list_name:notes>/<_id:{note_id_re}>'),
        listhandler.NotesListHandler, name='notes'
    ),

    webapp2.Route(
        r'/api/collections/curators',
        collectionshandler.CollectionsHandler, handler_method='curators', methods=['GET']
    ),
    webapp2.Route(
        r'/api/<cont_name:collections>',
        collectionshandler.CollectionsHandler, name='colls', handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        r'/api/<cont_name:collections>',
        collectionshandler.CollectionsHandler, methods=['POST']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:collections>/<cid:{cid_re}>'),
        collectionshandler.CollectionsHandler, name='coll_details', methods=['GET', 'PUT', 'DELETE']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:collections>/<cid:{cid_re}>/sessions'),
        collectionshandler.CollectionsHandler, name='coll_ses', handler_method='get_sessions', methods=['GET']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:collections>/<cid:{cid_re}>/acquisitions'),
        collectionshandler.CollectionsHandler, name='coll_acq', handler_method='get_acquisitions', methods=['GET']
    ),

    webapp2.Route(
        _format(r'/api/users/<uid:{user_id_re}>/<cont_name:{cont_name_re}>'),
        containerhandler.ContainerHandler, name='user_conts', handler_method='get_all_for_user', methods=['GET']
    ),
    webapp2.Route(
        r'/api/projects/groups',
        containerhandler.ContainerHandler, handler_method='get_groups_with_project', methods=['GET']
    ),
    webapp2.Route(
        _format(r'/api/<par_cont_name:groups>/<par_id:{group_id_re}>/<cont_name:projects>'),
        containerhandler.ContainerHandler, name='cont_sublist', handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        _format(r'/api/<par_cont_name:{cont_name_re}>/<par_id:{cid_re}>/<cont_name:{cont_name_re}>'),
        containerhandler.ContainerHandler, name='cont_sublist', handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>'),
        containerhandler.ContainerHandler, name='cont_list', handler_method='get_all', methods=['GET']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>'),
        containerhandler.ContainerHandler, methods=['POST']
    ),
    webapp2.Route(
        _format(r'/api/<cont_name:{cont_name_re}>/<cid:{cid_re}>'),
        containerhandler.ContainerHandler, name='cont_details', methods=['GET','PUT','DELETE']
    ),
]


def custom_json_serializer(obj):
    if isinstance(obj, bson.objectid.ObjectId):
        return str(obj)
    elif isinstance(obj, datetime.datetime):
        return pytz.timezone('UTC').localize(obj).isoformat()
    raise TypeError(repr(obj) + " is not JSON serializable")


def dispatcher(router, request, response):
    rv = router.default_dispatcher(request, response)
    if rv is not None:
        response.write(json.dumps(rv, default=custom_json_serializer))
        response.headers['Content-Type'] = 'application/json; charset=utf-8'


try:
    import newrelic.agent
    app = newrelic.agent.WSGIApplicationWrapper(webapp2.WSGIApplication(routes))
except ImportError:
    app = webapp2.WSGIApplication(routes)

app.router.set_dispatcher(dispatcher)