/
models.py
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/
models.py
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import datetime
import uuid
from bson import ObjectId
from dateutil import parser
import bcrypt
import rfc3339
from db import get_token, create_new_token, find_one, object_save, list_all
from utils import json_response
def get_user_by_token(collection, token):
user_id = get_token(token)
if user_id is None:
return None
user = find_one(collection, user_id)
if user is None:
return None
return User(**user)
class User:
def __init__(self, **kwargs):
self._id = kwargs.get('_id')
self.login = kwargs.get('login')
self.password_hash = kwargs.get('password_hash')
self.name = kwargs.get('name')
self.e_tag = kwargs.get('e_tag', str(uuid.uuid4()))
if 'password' in kwargs:
self.password_hash = bcrypt.hashpw(kwargs.get('password').encode('utf-8'), bcrypt.gensalt())
def get_id(self):
return self._id
def password_match(self, password):
return bcrypt.hashpw(password, self.password_hash) == self.password_hash
def validate(self):
for field in [self.login, self.password_hash, self.name]:
if field is None:
return False
return True
def authenticate(self, password):
if not bcrypt.checkpw(password.encode('utf-8'), self.password_hash):
return json_response({"message": "Invalid login or password"}, 403)
token = get_token(self._id)
if token is None:
token = create_new_token(self._id)
return json_response({"token": token}, 200)
def create(self, collection):
if find_one(collection, self.login, 'login') is not None:
return json_response({"message": "User already exists"}, 409)
return object_save(collection, self.to_dict(), "users")
def update(self, collection, old_login):
user = find_one(collection, old_login, 'login')
if user is None:
return json_response({"message": "User doesn't exist"}, 404)
user = User(**user)
if user.e_tag != self.e_tag:
return json_response({"message": "ETag header is invalid"}, 400)
if self.login != user.login:
return json_response({"message": "You cannot change user login"}, 400)
self._id = user._id
return object_save(collection, self.to_dict())
def to_dict(self):
return {k: v for k, v in self.__dict__.items() if v is not None}
class Room:
def __init__(self, **kwargs):
self._id = kwargs.get('_id')
self.name = kwargs.get('name')
self.description = kwargs.get('description')
self.place = kwargs.get('place')
self.e_tag = kwargs.get('e_tag', str(uuid.uuid4()))
def get_id(self):
return self._id
def validate(self):
for field in [self.name, self.place]:
if field is None:
return False
return True
def create(self, collection):
return object_save(collection, self.to_dict(), "rooms")
def update(self, collection, old_id):
old_room = find_one(collection, old_id)
if old_room is None:
return json_response({"message": "Room doesn't exist"}, 404)
old_room = Room(**old_room)
if old_room.e_tag != self.e_tag:
return json_response({"message": "ETag header is invalid"}, 400)
self._id = old_room._id
return object_save(collection, self.to_dict())
def to_dict(self):
return {k: v for k, v in self.__dict__.items() if v is not None}
def available(self, meetings_collection, start, end, meeting_id=None):
filter_query = {
"$or": [
{
"start_time": {"$lt": start}, "end_time": {"$gt": start}
},
{
"start_time": {"$lt": end}, "end_time": {"$gt": end}
}
], "room_id": ObjectId(self._id)
}
if meeting_id is not None:
filter_query["_id"] = {"$ne": meeting_id}
if not meetings_collection.find_one(filter_query):
return True
return False
class Meeting:
def __init__(self, **kwargs):
self._id = kwargs.get('_id')
self.name = kwargs.get('name')
self.description = kwargs.get('description')
self.start_time = kwargs.get('start_time')
self.end_time = kwargs.get('end_time')
self.room_id = kwargs.get('room_id')
self.user_id = kwargs.get('user_id')
self.e_tag = kwargs.get('e_tag', str(uuid.uuid4()))
if self.start_time is not None:
self.start_time = rfc3339.rfc3339(parser.parse(self.start_time), utc=True)
if self.end_time is not None:
self.end_time = rfc3339.rfc3339(parser.parse(self.end_time), utc=True)
def validate(self):
for field in [self.name, self.start_time, self.end_time]:
if field is None:
return False
return True
def update(self, collection, meeting_id, rooms_collection, user):
self.user_id = str(user.get_id())
self._id = meeting_id
old_meeting = find_one(collection, meeting_id)
if old_meeting is None:
return json_response({"message": "Meeting doesn't exist"}, 404)
old_meeting = Meeting(**old_meeting)
if old_meeting.e_tag != self.e_tag:
return json_response({"message": "ETag header is invalid"}, 400)
self._id = old_meeting._id
if self.room_id is None:
self.room_id = old_meeting.room_id
if self.room_id is not None:
room_data = find_one(rooms_collection, self.room_id)
if room_data is None:
return json_response({"message": "Room doesn't exist"}, 400)
room_data = Room(**room_data)
if not room_data.available(collection, self.start_time, self.end_time, str(self._id)):
return json_response({"message": "Room is not available for the specified time"}, 400)
else:
selected_room = None
data = rooms_collection.find({})
for x in data:
x_room = Room(**x)
if x_room.available(collection, self.start_time, self.end_time):
selected_room = x_room
break
if selected_room is None:
return json_response({"message": "There is no free room for the specified time"}, 400)
self.room_id = str(selected_room.get_id())
return object_save(collection, self.to_dict())
def to_dict(self):
return {k: v for k, v in self.__dict__.items() if v is not None}
class LoginData:
def __init__(self, **kwargs):
self.login = kwargs.get('login')
self.password = kwargs.get('password')
def validate(self):
if self.login is None or self.password is None:
return False
return True
def login_response(self, users_collection):
user = find_one(users_collection, self.login, 'login')
if user is None:
return json_response({"message": "User do not exist"}, 404)
user = User(**user)
return user.authenticate(self.password)
def to_dict(self):
return {k: v for k, v in self.__dict__.items() if v is not None}
def list_meetings(collection, filters, args):
if 'show_old' not in args:
filters['start_time'] = {"$gt": rfc3339.rfc3339(datetime.datetime.now())}
else:
args.pop('show_old')
filters['_temp'] = {"$exists": False}
return list_all(collection, filters, args)