220 lines
8.3 KiB
Python
220 lines
8.3 KiB
Python
import logging
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import config
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import json
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import math
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from config import ldap_manager, etcd_client
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from helper import resolve_product
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class ValidationException(Exception):
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"""Validation Error"""
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class Field:
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def __init__(self, _name, _type, _value=None, validators=None, disable_validation=False):
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self.validation_disabled = disable_validation
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self.name = _name
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self.value = _value
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self.type = _type
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self.validators = validators or []
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def is_valid(self):
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if not self.validation_disabled:
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if not isinstance(self.value, self.type):
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try:
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self.value = self.type(self.value)
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except Exception:
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raise ValidationException("Incorrect Type for '{}' field".format(self.name))
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for validator in self.validators:
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validator()
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def __repr__(self):
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return self.name
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class BaseSchema:
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def __init__(self):
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self.objects = {}
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def validation(self):
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# custom validation is optional
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return True
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def get_fields(self):
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return [getattr(self, field) for field in dir(self) if isinstance(getattr(self, field), Field)]
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def is_valid(self):
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for field in self.get_fields():
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field.is_valid()
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self.validation()
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def get_cleaned_values(self):
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field_kv_dict = {
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field.name: field.value
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for field in self.get_fields()
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}
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cleaned_values = field_kv_dict
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cleaned_values.update(self.objects)
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return cleaned_values
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def add_schema(self, schema, data, under_field_name=None):
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s = schema(data)
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s.is_valid()
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base = self
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if under_field_name:
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# Create a field in self
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setattr(self, under_field_name, Field(under_field_name, dict, _value={}, disable_validation=True))
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base = getattr(self, under_field_name)
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for field in s.get_fields():
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if under_field_name:
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getattr(base, 'value')[field.name] = field.value
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else:
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setattr(base, field.name, field)
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self.objects.update(s.objects)
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@staticmethod
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def get(dictionary: dict, key: str, return_default=False, default=None):
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if dictionary is None:
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raise ValidationException('No data provided at all.')
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try:
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value = dictionary[key]
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except KeyError:
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if return_default:
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return {'_value': default, 'disable_validation': True}
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raise ValidationException("Missing data for '{}' field.".format(key))
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else:
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return {'_value': value, 'disable_validation': False}
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class AddProductSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.add_schema(UserCredentialSchema, data)
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self.specs = Field('specs', dict, **self.get(data, 'specs'))
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self.update = Field('update', bool, **self.get(data, 'update', return_default=True, default=False))
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def validation(self):
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user = self.objects['user']
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user = json.loads(user.entry_to_json())
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uid, ou, *dc = user['dn'].replace('ou=', '').replace('dc=', '').replace('uid=', '').split(',')
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if ou != config.config.get('ldap', 'internal_user_ou', fallback='users'):
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raise ValidationException('You do not have access to create product.')
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product = resolve_product(self.specs.value['usable-id'], etcd_client)
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if product:
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self.objects['product'] = product
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class AddressSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.line1 = Field('line1', str, **self.get(data, 'line1'))
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self.line2 = Field('line2', str, **self.get(data, 'line2', return_default=True))
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self.city = Field('city', str, **self.get(data, 'city'))
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self.country = Field('country', str, **self.get(data, 'country'))
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self.state = Field('state', str, **self.get(data, 'state', return_default=True))
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self.postal_code = Field('postal_code', str, **self.get(data, 'postal_code', return_default=True))
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class UserRegisterPaymentSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.add_schema(UserCredentialSchema, data)
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self.add_schema(AddressSchema, data, under_field_name='address')
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self.card_number = Field('card_number', str, **self.get(data, 'card_number'))
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self.cvc = Field('cvc', str, **self.get(data, 'cvc'))
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self.expiry_year = Field('expiry_year', int, **self.get(data, 'expiry_year'))
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self.expiry_month = Field('expiry_month', int, **self.get(data, 'expiry_month'))
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self.card_holder_name = Field('card_holder_name', str, **self.get(data, 'card_holder_name'))
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class UserCredentialSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.username = Field('username', str, **self.get(data, 'username'))
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self.password = Field('password', str, **self.get(data, 'password'))
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def validation(self):
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try:
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entry = ldap_manager.is_password_valid(self.username.value, self.password.value, query_key='uid')
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except ValueError:
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raise ValidationException('No user with \'{}\' username found. You can create account at '
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'https://account.ungleich.ch'.format(self.username.value))
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except Exception:
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raise ValidationException('Invalid username/password.')
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else:
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self.objects['user'] = entry
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class ProductOrderSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.product_id = Field(
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'product_id', str, **self.get(data, 'product_id'), validators=[self.product_id_validation]
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)
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self.pay_consent = Field('pay', bool, **self.get(data, 'pay', return_default=True, default=False))
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self.add_schema(UserCredentialSchema, data)
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def product_id_validation(self):
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product = resolve_product(self.product_id.value, etcd_client)
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if product:
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product['quantity'] = float(product['quantity'])
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self.product_id.value = product['uuid']
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self.objects['product'] = product
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logging.debug('Got product {}'.format(product))
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if not product['active']:
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raise ValidationException('Product is not active at the moment.')
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if product['quantity'] <= 0:
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raise ValidationException('Out of stock.')
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else:
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raise ValidationException('No such product exists.')
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def validation(self):
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username = self.objects['user'].uid
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customer_previous_orders = etcd_client.get_prefix('/v1/user/{}'.format(username), value_in_json=True)
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customer_previous_orders = [o.value for o in customer_previous_orders]
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membership = next(filter(lambda o: o['product'] == 'membership', customer_previous_orders), None)
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if membership is None and self.objects['product']['usable-id'] != 'membership':
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raise ValidationException('Please buy membership first to use this facility')
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max_quantity_user_can_order = float(self.objects['product'].get('max_per_user', math.inf))
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previous_order_of_same_product = [
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o for o in customer_previous_orders if o['product'] == self.objects['product']['usable-id']
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]
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if len(previous_order_of_same_product) >= max_quantity_user_can_order:
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raise ValidationException(
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'You cannot buy {} more than {} times'.format(
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self.objects['product']['name'], int(max_quantity_user_can_order)
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)
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)
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class OrderListSchema(BaseSchema):
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def __init__(self, data):
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super().__init__()
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self.add_schema(UserCredentialSchema, data)
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def make_return_message(err, status_code=200):
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logging.debug('message: {}'.format(str(err)))
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return {'message': str(err)}, status_code
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def create_schema(specification, data):
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fields = {}
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for feature_name, feature_detail in specification['features'].items():
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if not feature_detail['constant']:
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fields[feature_name] = Field(
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feature_name, eval(feature_detail['unit']['type']), **BaseSchema.get(data, feature_name)
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)
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return type('{}Schema'.format(specification['name']), (BaseSchema,), fields)
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