Eos/eos/base/election.py

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# Eos - Verifiable elections
# Copyright © 2017 RunasSudo (Yingtong Li)
#
# 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 <http://www.gnu.org/licenses/>.
from eos.core.objects import *
from eos.base.workflow import *
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class Answer(EmbeddedObject):
pass
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class EncryptedAnswer(EmbeddedObject):
pass
class NullEncryptedAnswer(EncryptedAnswer):
answer = EmbeddedObjectField()
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def decrypt(self):
return self.answer
class Ballot(EmbeddedObject):
#_id = UUIDField()
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encrypted_answers = EmbeddedObjectListField()
election_id = UUIDField()
election_hash = StringField()
class Vote(EmbeddedObject):
ballot = EmbeddedObjectField()
cast_at = DateTimeField()
class Voter(EmbeddedObject):
_id = UUIDField()
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name = StringField()
votes = EmbeddedObjectListField()
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class EmailVoter(Voter):
email = StringField()
class Question(EmbeddedObject):
prompt = StringField()
class Result(EmbeddedObject):
pass
class ApprovalQuestion(Question):
choices = ListField(StringField())
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min_choices = IntField()
max_choices = IntField()
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def pretty_answer(self, answer):
return ', '.join([self.choices[choice] for choice in answer.choices])
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class ApprovalAnswer(Answer):
choices = ListField(IntField())
class RawResult(Result):
answers = EmbeddedObjectListField()
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def count(self):
combined = []
for answer in self.answers:
index = next((i for i, val in enumerate(combined) if val[0] == answer), None)
if index is None:
combined.append([answer, 1])
else:
combined[index][1] += 1
combined.sort(key=lambda x: x[1], reverse=True)
return combined
class Election(TopLevelObject):
_id = UUIDField()
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workflow = EmbeddedObjectField(Workflow) # Once saved, we don't care what kind of workflow it is
name = StringField()
voters = EmbeddedObjectListField(is_hashed=False)
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questions = EmbeddedObjectListField()
results = EmbeddedObjectListField(is_hashed=False)