from flask import g from ereuse_devicehub.db import db from ereuse_devicehub.inventory.models import Transfer from ereuse_devicehub.resources.action.models import ( Confirm, ConfirmDocument, ConfirmRevokeDocument, Revoke, RevokeDocument, Trade, ) from ereuse_devicehub.resources.lot.views import delete_from_trade from ereuse_devicehub.resources.user.models import User from ereuse_devicehub.teal.marshmallow import ValidationError class TradeView: """Handler for manager the trade action register from post request_post = { 'type': 'Trade', 'devices': [device_id], 'documents': [document_id], 'userFrom': user2.email, 'userTo': user.email, 'price': 10, 'date': "2020-12-01T02:00:00+00:00", 'lot': lot['id'], 'confirm': True, } """ def __init__(self, data, resource_def, schema): self.schema = schema self.data = resource_def.schema.load(data) self.data.pop('user_to_email', '') self.data.pop('user_from_email', '') self.create_phantom_account() self.trade = Trade(**self.data) db.session.add(self.trade) self.create_confirmations() self.create_automatic_trade() self.create_transfer() def post(self): db.session().final_flush() ret = self.schema.jsonify(self.trade) ret.status_code = 201 db.session.commit() return ret def create_confirmations(self) -> None: """Do the first confirmation for the user than do the action""" # if the confirmation is mandatory, do automatic confirmation only for # owner of the lot if self.trade.confirm: if self.trade.devices: confirm_devs = Confirm( user=g.user, action=self.trade, devices=self.trade.devices ) db.session.add(confirm_devs) if self.trade.documents: confirm_docs = ConfirmDocument( user=g.user, action=self.trade, documents=self.trade.documents ) db.session.add(confirm_docs) return # check than the user than want to do the action is one of the users # involved in the action if g.user not in [self.trade.user_from, self.trade.user_to]: txt = "You do not participate in this trading" raise ValidationError(txt) confirm_from = Confirm( user=self.trade.user_from, action=self.trade, devices=self.trade.devices ) confirm_to = Confirm( user=self.trade.user_to, action=self.trade, devices=self.trade.devices ) db.session.add(confirm_from) db.session.add(confirm_to) def create_phantom_account(self) -> None: """ If exist both users not to do nothing If exist from but not to: search if exist in the DB if exist use it else create new one The same if exist to but not from """ user_from = self.data.get('user_from') user_to = self.data.get('user_to') code = self.data.get('code') if user_from and user_to: return if self.data['confirm']: return if user_from and not user_to: assert g.user == user_from email = "{}_{}@dhub.com".format(str(user_from.id), code) users = User.query.filter_by(email=email) if users.first(): user = users.first() self.data['user_to'] = user return user = User(email=email, password='', active=False, phantom=True) db.session.add(user) self.data['user_to'] = user if not user_from and user_to: email = "{}_{}@dhub.com".format(str(user_to.id), code) users = User.query.filter_by(email=email) if users.first(): user = users.first() self.data['user_from'] = user return user = User(email=email, password='', active=False, phantom=True) db.session.add(user) self.data['user_from'] = user def create_transfer(self): code = self.trade.code confirm = self.trade.confirm lot = self.trade.lot user_from = None user_to = None if not self.trade.user_from.phantom: user_from = self.trade.user_from if not self.trade.user_to.phantom: user_to = self.trade.user_to if (user_from and user_to) or not code or confirm: return self.transfer = Transfer( code=code, user_from=user_from, user_to=user_to, lot=lot ) db.session.add(self.transfer) def create_automatic_trade(self) -> None: # not do nothing if it's neccesary confirmation explicity if self.trade.confirm: return # Change the owner for every devices for dev in self.trade.devices: dev.change_owner(self.trade.user_to) class ConfirmMixin: """ Very Important: ============== All of this Views than inherit of this class is executed for users than is not owner of the Trade action. The owner of Trade action executed this actions of confirm and revoke from the lot """ Model = None def __init__(self, data, resource_def, schema): self.schema = schema a = resource_def.schema.load(data) self.validate(a) if not a['devices']: raise ValidationError('Devices not exist.') self.model = self.Model(**a) def post(self): db.session().final_flush() ret = self.schema.jsonify(self.model) ret.status_code = 201 db.session.commit() return ret class ConfirmView(ConfirmMixin): """Handler for manager the Confirmation register from post request_confirm = { 'type': 'Confirm', 'action': trade.id, 'devices': [device_id] } """ Model = Confirm def validate(self, data): """If there are one device than have one confirmation, then remove the list this device of the list of devices of this action """ real_devices = [] trade = data['action'] lot = trade.lot for dev in data['devices']: if dev.trading(lot, simple=True) not in [ 'NeedConfirmation', 'NeedConfirmRevoke', ]: raise ValidationError('Some devices not possible confirm.') # Change the owner for every devices for dev in data['devices']: if dev.trading(lot) == 'NeedConfirmation': user_to = data['action'].user_to dev.change_owner(user_to) class RevokeView(ConfirmMixin): """Handler for manager the Revoke register from post request_revoke = { 'type': 'Revoke', 'action': trade.id, 'devices': [device_id], } """ Model = Revoke def __init__(self, data, resource_def, schema): self.schema = schema a = resource_def.schema.load(data) self.validate(a) def validate(self, data): """All devices need to have the status of DoubleConfirmation.""" devices = data['devices'] if not devices: raise ValidationError('Devices not exist.') lot = data['action'].lot self.model = delete_from_trade(lot, devices) class ConfirmDocumentMixin: """ Very Important: ============== All of this Views than inherit of this class is executed for users than is not owner of the Trade action. The owner of Trade action executed this actions of confirm and revoke from the lot """ Model = None def __init__(self, data, resource_def, schema): self.schema = schema a = resource_def.schema.load(data) self.validate(a) if not a['documents']: raise ValidationError('Documents not exist.') self.model = self.Model(**a) def post(self): db.session().final_flush() ret = self.schema.jsonify(self.model) ret.status_code = 201 db.session.commit() return ret class ConfirmDocumentView(ConfirmDocumentMixin): """Handler for manager the Confirmation register from post request_confirm = { 'type': 'Confirm', 'action': trade.id, 'documents': [document_id], } """ Model = ConfirmDocument def validate(self, data): """If there are one device than have one confirmation, then remove the list this device of the list of devices of this action """ for doc in data['documents']: ac = doc.trading if not doc.trading in ['Confirm', 'Need Confirmation']: txt = 'Some of documents do not have enough to confirm for to do a Doble Confirmation' ValidationError(txt) ### End check ### class RevokeDocumentView(ConfirmDocumentMixin): """Handler for manager the Revoke register from post request_revoke = { 'type': 'Revoke', 'action': trade.id, 'documents': [document_id], } """ Model = RevokeDocument def validate(self, data): """All devices need to have the status of DoubleConfirmation.""" ### check ### if not data['documents']: raise ValidationError('Documents not exist.') for doc in data['documents']: if not doc.trading in ['Document Confirmed', 'Confirm']: txt = ( 'Some of documents do not have enough to confirm for to do a revoke' ) ValidationError(txt) ### End check ### class ConfirmRevokeDocumentView(ConfirmDocumentMixin): """Handler for manager the Confirmation register from post request_confirm_revoke = { 'type': 'ConfirmRevoke', 'action': action_revoke.id, 'documents': [document_id], } """ Model = ConfirmRevokeDocument def validate(self, data): """All devices need to have the status of revoke.""" if not data['action'].type == 'RevokeDocument': txt = 'Error: this action is not a revoke action' ValidationError(txt) for doc in data['documents']: if not doc.trading == 'Revoke': txt = 'Some of documents do not have revoke to confirm' ValidationError(txt)