73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
# Eos - Verifiable elections
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# Copyright © 2017 RunasSudo (Yingtong Li)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from eos.core.objects import *
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from eos.base.workflow import *
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class Answer(EmbeddedObject):
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pass
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class EncryptedAnswer(EmbeddedObject):
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pass
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class NullEncryptedAnswer(EncryptedAnswer):
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answer = EmbeddedObjectField()
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def decrypt(self):
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return self.answer
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class Ballot(EmbeddedObject):
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_id = UUIDField()
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encrypted_answers = EmbeddedObjectListField()
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class Voter(EmbeddedObject):
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_id = UUIDField()
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ballots = EmbeddedObjectListField()
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class Question(EmbeddedObject):
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prompt = StringField()
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class Result(EmbeddedObject):
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pass
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class ApprovalQuestion(Question):
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choices = ListField(StringField())
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def compute_result(self):
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result = ApprovalResult(choices=([0] * len(self.choices)))
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for voter in self.recurse_parents(Election).voters:
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for ballot in voter.ballots:
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# TODO: Separate decryption phase
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encrypted_answer = ballot.encrypted_answers[self._instance[1]] # _instance[1] is the question number
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answer = encrypted_answer.decrypt()
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for choice in answer.choices:
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result.choices[choice] += 1
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return result
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class ApprovalAnswer(Answer):
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choices = ListField(IntField())
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class ApprovalResult(Result):
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choices = ListField(IntField())
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class Election(TopLevelObject):
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_id = UUIDField()
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workflow = EmbeddedObjectField(Workflow) # Once saved, we don't care what kind of workflow it is
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name = StringField()
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voters = EmbeddedObjectListField(hashed=False)
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questions = EmbeddedObjectListField()
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results = EmbeddedObjectListField(hashed=False)
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