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# This file is part of Email-Reminder.
#
# Copyright (C) 2020 by Francois Marier
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import sys
import xml.parsers.expat
from xml.dom.minidom import getDOMImplementation # nosec
from defusedxml import minidom
from EmailReminder.Anniversary import AnniversaryModel
from EmailReminder.Birthday import BirthdayModel
from EmailReminder.Monthly import MonthlyModel
from EmailReminder.Utils import readXMLValue, writeXMLValue
from EmailReminder.Weekly import WeeklyModel
from EmailReminder.Yearly import YearlyModel
class EventList:
SUPPORTED_TYPES = ('birthday', 'anniversary', 'yearly', 'monthly',
'weekly')
def __init__(self, simulate, verbose):
self.stores = {}
self.filename = None
self.document = None
self.user = None
self.simulate = simulate
self.verbose = verbose
def _createDocument(self):
self.document = getDOMImplementation().createDocument(
None, 'email-reminder_user', None)
def getUser(self):
user = {}
if not self.user:
return user
for field in ('first_name', 'last_name', 'email'):
user[field] = readXMLValue(self.user, field)
return user
def setUser(self, user):
for field in ('first_name', 'last_name', 'email'):
if field in user:
writeXMLValue(self.document, self.user, field, user[field])
def load(self, filename):
self.filename = filename
if self.verbose:
print(f"Loading events from {self.filename}")
try:
with open(self.filename, encoding='utf-8') as fh:
try:
self.document = minidom.parseString(fh.read())
except xml.parsers.expat.ExpatError as err:
if err.code == 3: # no elements
self._createDocument()
else:
print(f"Error: '{filename}' is not a valid "
f"configuration file ({err})", file=sys.stderr)
return False
except FileNotFoundError:
self._createDocument()
users = self.document.getElementsByTagName('email-reminder_user')
self.user = users.item(0)
events = self.user.getElementsByTagName('events')
if events:
events = events.item(0)
else:
events = self.document.createElement('events')
self.document.documentElement.appendChild(events)
for event in events.getElementsByTagName('event'):
for eventType in self.SUPPORTED_TYPES:
if event.getAttribute('type') == eventType:
self.model(eventType).addEvent(event)
break
return True
def save(self):
if not self.document:
return
if self.simulate:
return
if self.verbose:
print(f"Writing events to {self.filename}")
with open(self.filename, mode='w', encoding='utf-8') as fh:
fh.write(self.document.toxml()) # TODO: use toprettyxml()?
def model(self, eventType):
if eventType not in self.stores:
if eventType == 'anniversary':
self.stores[eventType] = AnniversaryModel(self.document)
elif eventType == 'birthday':
self.stores[eventType] = BirthdayModel(self.document)
elif eventType == 'yearly':
self.stores[eventType] = YearlyModel(self.document)
elif eventType == 'monthly':
self.stores[eventType] = MonthlyModel(self.document)
elif eventType == 'weekly':
self.stores[eventType] = WeeklyModel(self.document)
return self.stores[eventType]
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