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models.py
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models.py
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from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin, AnonymousUserMixin
from app import login_manager
from app import db
from flask import current_app
from itsdangerous import TimedJSONWebSignatureSerializer as Serializer
from datetime import datetime
class Item(object):
# name = ""
# category = None
# place = ""
# lat = 0
# lng = 0
# when = "" #datetime
# who = ""
# detail = ""
# status = ""
def __init__(self, name, category, place, lat, lng, when, who, detail):
self.name = name
self.category = category
self.place = place
self.lat, self.lng = lat, lng
self.when = when
self.who = who
self.detail = detail
self.status = ""
self.now = datetime.now()
def from_dict(self, data):
if data is not None:
self.name = data['name']
self.category = data['category']
self.place = data['place']
self.lat = data['lat']
self.lng = data['lng']
self.when = data['when']
self.who = data['who']
self.detail = data['detail']
self.status = data['status']
self.now = data['now']
def to_dict(self):
return vars(self)
def fin_stat(self):
self.status = "returned"
def set_stat(self, status):
self.status = status
class FoundedItem(Item):
# ownership= False
def __init__(self, name, category, place, lat, lng, when, who, detail, ownership=False):
super().__init__(name, category, place, lat, lng, when, who, detail)
self.ownership = ownership
self.set_stat('founded')
class LostedItem(Item):
def __init__(self, name, category, place, lat, lng, when, who, detail):
super().__init__(name, category, place, lat, lng, when, who, detail)
self.set_stat('losted')
class User(UserMixin, object):
id = ""
username = "peter"
role = None # 20191112
password_hash = ""
confirmed = False
member_since = ""
last_seen = ""
membergrade = 0
point = 0
def __init__(self, email, username, password):
self.id = email
self.username = username
self.password = password
###
# 20191112
collection = db.get_collection('roles')
if self.id == current_app.config['ADMIN']:
self.role = Role('Administrator', 0xff)
else:
result = collection.find_one({'default': True})
self.role = Role(result['name'], result['permission'], result['default'])
###
@property
def password(self):
raise AttributeError('password is not a readable attribute')
@password.setter
def password(self, password):
self.password_hash = generate_password_hash(password)
def verify_password(self, password):
return check_password_hash(self.password_hash, password)
@login_manager.user_loader
def load_user(user_id):
collection = db.get_collection('users')
results = collection.find_one({'id': user_id})
if results is not None:
user = User(results['id'], "", "") # 20191112
user.from_dict(results)
return user
else:
return None
##### 20191108
def generate_confirmation_token(self, expiration=3600):
s = Serializer(current_app.config['SECRET_KEY'], expiration)
return s.dumps({'confirm': self.id}).decode('utf-8')
def confirm(self, token):
s = Serializer(current_app.config['SECRET_KEY'])
try:
data = s.loads(token.encode('utf-8'))
except:
return False
if data.get('confirm') != self.id:
return False
self.confirmed = True
collection = db.get_collection('users')
results = collection.update_one({'id': self.id}, {'$set': {'confirmed': self.confirmed}})
return True
#####
###
# 20191112
def can(self, permissions):
return self.role is not None and (self.role.permission & permissions) == permissions
def is_administrator(self):
return self.can(Permission.ADMINISTATOR)
###
###
# 20191122
def ping(self):
self.last_seen = datetime.utcnow()
collection = db.get_collection('users')
results = collection.update_one({'id': self.id}, {'$set': {'last_seen': self.last_seen}})
# 20191028
def to_dict(self):
dict_user = {
'id': self.id,
'username': self.username,
### 20191112
'role_id': self.role.name,
'role_permission': self.role.permission,
####
'password_hash': self.password_hash,
'confirmed': self.confirmed,
### 20191122
'member_since': self.member_since,
'last_seen': self.last_seen
}
return dict_user
def from_dict(self, data):
if data is not None:
self.id = data['id']
self.username = data['username']
### 20191112
self.role = Role(data['role_id'], data['role_permission'])
###
self.password_hash = data['password_hash']
self.confirmed = data['confirmed']
### 20191122
self.member_since = data.get('member_since')
self.last_seen = data.get('last_seen')
###
# 20191112
class AnonymousUser(AnonymousUserMixin):
def can(self, permissions):
return False
@staticmethod
def is_administrator():
return False
class Role(object):
name = ""
permission = 0
default = False
def __init__(self, name, permission, default=False):
Role.name = name
Role.permission = permission
Role.default = default
@staticmethod
def insert_roles():
roles = {
'User': (Permission.FOLLOW |
Permission.COMMENT |
Permission.WRITE_ARTICLES, True),
'Moderator': (Permission.FOLLOW |
Permission.COMMENT |
Permission.WRITE_ARTICLES |
Permission.MODERATE_COMMENTS, False),
'Administrator': (0xff, False)
}
collection = db.get_collection('roles')
for k, v in roles.items():
result = collection.find_one({'name': k})
role = Role(k, v[0], v[1])
if result is not None:
collection.update_one({'name': k}, {'$set': role.to_dict()})
else:
collection.insert_one(role.to_dict())
def to_dict(self):
dict_role = {
'name': self.name,
'permission': self.permission,
'default': self.default
}
return dict_role
def from_dict(self, data):
if data is not None:
self.name = data['name']
self.permission = data['permission']
self.default = data['default']
class Permission:
FOLLOW = 0x01
COMMENT = 0x02
WRITE_ARTICLES = 0x04
MODERATE_COMMENTS = 0x08
ADMINISTATOR = 0x80
###
Role.insert_roles()