zcash-grant-system/backend/grant/proposal/models.py

500 lines
16 KiB
Python

import datetime
from typing import List
from sqlalchemy import func, or_
from functools import reduce
from grant.comment.models import Comment
from grant.extensions import ma, db
from grant.utils.misc import dt_to_unix, make_url
from grant.utils.exceptions import ValidationException
from grant.utils.requests import blockchain_get
from grant.email.send import send_email
# Proposal states
DRAFT = 'DRAFT'
PENDING = 'PENDING'
APPROVED = 'APPROVED'
REJECTED = 'REJECTED'
LIVE = 'LIVE'
DELETED = 'DELETED'
STATUSES = [DRAFT, PENDING, APPROVED, REJECTED, LIVE, DELETED]
# Funding stages
FUNDING_REQUIRED = 'FUNDING_REQUIRED'
COMPLETED = 'COMPLETED'
PROPOSAL_STAGES = [FUNDING_REQUIRED, COMPLETED]
# Proposal categories
DAPP = "DAPP"
DEV_TOOL = "DEV_TOOL"
CORE_DEV = "CORE_DEV"
COMMUNITY = "COMMUNITY"
DOCUMENTATION = "DOCUMENTATION"
ACCESSIBILITY = "ACCESSIBILITY"
CATEGORIES = [DAPP, DEV_TOOL, CORE_DEV, COMMUNITY, DOCUMENTATION, ACCESSIBILITY]
# Contribution states
# PENDING = 'PENDING'
CONFIRMED = 'CONFIRMED'
proposal_team = db.Table(
'proposal_team', db.Model.metadata,
db.Column('user_id', db.Integer, db.ForeignKey('user.id')),
db.Column('proposal_id', db.Integer, db.ForeignKey('proposal.id'))
)
class ProposalTeamInvite(db.Model):
__tablename__ = "proposal_team_invite"
id = db.Column(db.Integer(), primary_key=True)
date_created = db.Column(db.DateTime)
proposal_id = db.Column(db.Integer, db.ForeignKey("proposal.id"), nullable=False)
address = db.Column(db.String(255), nullable=False)
accepted = db.Column(db.Boolean)
def __init__(self, proposal_id: int, address: str, accepted: bool = None):
self.proposal_id = proposal_id
self.address = address
self.accepted = accepted
self.date_created = datetime.datetime.now()
@staticmethod
def get_pending_for_user(user):
return ProposalTeamInvite.query.filter(
ProposalTeamInvite.accepted == None,
(func.lower(user.email_address) == func.lower(ProposalTeamInvite.address))
).all()
class ProposalUpdate(db.Model):
__tablename__ = "proposal_update"
id = db.Column(db.Integer(), primary_key=True)
date_created = db.Column(db.DateTime)
proposal_id = db.Column(db.Integer, db.ForeignKey("proposal.id"), nullable=False)
title = db.Column(db.String(255), nullable=False)
content = db.Column(db.Text, nullable=False)
def __init__(self, proposal_id: int, title: str, content: str):
self.proposal_id = proposal_id
self.title = title
self.content = content
self.date_created = datetime.datetime.now()
class ProposalContribution(db.Model):
__tablename__ = "proposal_contribution"
id = db.Column(db.Integer(), primary_key=True)
date_created = db.Column(db.DateTime, nullable=False)
proposal_id = db.Column(db.Integer, db.ForeignKey("proposal.id"), nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey("user.id"), nullable=True)
status = db.Column(db.String(255), nullable=False)
amount = db.Column(db.String(255), nullable=False)
tx_id = db.Column(db.String(255))
user = db.relationship("User")
def __init__(
self,
proposal_id: int,
user_id: int,
amount: str
):
self.proposal_id = proposal_id
self.user_id = user_id
self.amount = amount
self.date_created = datetime.datetime.now()
self.status = PENDING
@staticmethod
def get_existing_contribution(user_id: int, proposal_id: int, amount: str):
return ProposalContribution.query.filter_by(
user_id=user_id,
proposal_id=proposal_id,
amount=amount,
status=PENDING,
).first()
@staticmethod
def get_by_userid(user_id):
return ProposalContribution.query \
.filter(ProposalContribution.user_id == user_id) \
.filter(ProposalContribution.status != DELETED) \
.order_by(ProposalContribution.date_created.desc()) \
.all()
def confirm(self, tx_id: str, amount: str):
self.status = CONFIRMED
self.tx_id = tx_id
self.amount = amount
class Proposal(db.Model):
__tablename__ = "proposal"
id = db.Column(db.Integer(), primary_key=True)
date_created = db.Column(db.DateTime)
# Content info
status = db.Column(db.String(255), nullable=False)
title = db.Column(db.String(255), nullable=False)
brief = db.Column(db.String(255), nullable=False)
stage = db.Column(db.String(255), nullable=False)
content = db.Column(db.Text, nullable=False)
category = db.Column(db.String(255), nullable=False)
date_approved = db.Column(db.DateTime)
date_published = db.Column(db.DateTime)
reject_reason = db.Column(db.String(255))
# Payment info
target = db.Column(db.String(255), nullable=False)
payout_address = db.Column(db.String(255), nullable=False)
deadline_duration = db.Column(db.Integer(), nullable=False)
# Relations
team = db.relationship("User", secondary=proposal_team)
comments = db.relationship(Comment, backref="proposal", lazy=True, cascade="all, delete-orphan")
updates = db.relationship(ProposalUpdate, backref="proposal", lazy=True, cascade="all, delete-orphan")
contributions = db.relationship(ProposalContribution, backref="proposal", lazy=True, cascade="all, delete-orphan")
milestones = db.relationship("Milestone", backref="proposal", lazy=True, cascade="all, delete-orphan")
invites = db.relationship(ProposalTeamInvite, backref="proposal", lazy=True, cascade="all, delete-orphan")
def __init__(
self,
status: str = 'DRAFT',
title: str = '',
brief: str = '',
content: str = '',
stage: str = '',
target: str = '0',
payout_address: str = '',
deadline_duration: int = 5184000, # 60 days
category: str = ''
):
self.date_created = datetime.datetime.now()
self.status = status
self.title = title
self.brief = brief
self.content = content
self.category = category
self.target = target
self.payout_address = payout_address
self.deadline_duration = deadline_duration
self.stage = stage
@staticmethod
def validate(proposal):
title = proposal.get('title')
stage = proposal.get('stage')
category = proposal.get('category')
if title and len(title) > 60:
raise ValidationException("Proposal title cannot be longer than 60 characters")
if stage and stage not in PROPOSAL_STAGES:
raise ValidationException("Proposal stage {} not in {}".format(stage, PROPOSAL_STAGES))
if category and category not in CATEGORIES:
raise ValidationException("Category {} not in {}".format(category, CATEGORIES))
def validate_publishable(self):
# Require certain fields
# TODO: I'm an idiot, make this a loop.
if not self.title:
raise ValidationException("Proposal must have a title")
if not self.content:
raise ValidationException("Proposal must have content")
if not self.brief:
raise ValidationException("Proposal must have a brief")
if not self.category:
raise ValidationException("Proposal must have a category")
if not self.target:
raise ValidationException("Proposal must have a target amount")
if not self.payout_address:
raise ValidationException("Proposal must have a payout address")
# Then run through regular validation
Proposal.validate(vars(self))
@staticmethod
def create(**kwargs):
Proposal.validate(kwargs)
return Proposal(
**kwargs
)
@staticmethod
def get_by_user(user, statuses=[LIVE]):
status_filter = or_(Proposal.status == v for v in statuses)
return Proposal.query \
.join(proposal_team) \
.filter(proposal_team.c.user_id == user.id) \
.filter(status_filter) \
.all()
@staticmethod
def get_by_user_contribution(user):
return Proposal.query \
.join(ProposalContribution) \
.filter(ProposalContribution.user_id == user.id) \
.order_by(ProposalContribution.date_created.desc()) \
.all()
def update(
self,
title: str = '',
brief: str = '',
category: str = '',
content: str = '',
target: str = '0',
payout_address: str = '',
deadline_duration: int = 5184000 # 60 days
):
self.title = title
self.brief = brief
self.category = category
self.content = content
self.target = target
self.payout_address = payout_address
self.deadline_duration = deadline_duration
Proposal.validate(vars(self))
def submit_for_approval(self):
self.validate_publishable()
allowed_statuses = [DRAFT, REJECTED]
# specific validation
if self.status not in allowed_statuses:
raise ValidationException(f"Proposal status must be {DRAFT} or {REJECTED} to submit for approval")
self.status = PENDING
def approve_pending(self, is_approve, reject_reason=None):
self.validate_publishable()
# specific validation
if not self.status == PENDING:
raise ValidationException(f"Proposal status must be {PENDING} to approve or reject")
if is_approve:
self.status = APPROVED
self.date_approved = datetime.datetime.now()
for t in self.team:
send_email(t.email_address, 'proposal_approved', {
'user': t,
'proposal': self,
'proposal_url': make_url(f'/proposals/{self.id}'),
'admin_note': 'Congratulations! Your proposal has been approved.'
})
else:
if not reject_reason:
raise ValidationException("Please provide a reason for rejecting the proposal")
self.status = REJECTED
self.reject_reason = reject_reason
for t in self.team:
send_email(t.email_address, 'proposal_rejected', {
'user': t,
'proposal': self,
'proposal_url': make_url(f'/proposals/{self.id}'),
'admin_note': reject_reason
})
def publish(self):
self.validate_publishable()
# specific validation
if not self.status == APPROVED:
raise ValidationException(f"Proposal status must be {APPROVED}")
self.date_published = datetime.datetime.now()
self.status = LIVE
def get_amount_funded(self):
contributions = ProposalContribution.query \
.filter_by(proposal_id=self.id, status=CONFIRMED) \
.all()
funded = reduce(lambda prev, c: prev + float(c.amount), contributions, 0)
return str(funded)
class ProposalSchema(ma.Schema):
class Meta:
model = Proposal
# Fields to expose
fields = (
"stage",
"status",
"date_created",
"date_approved",
"date_published",
"reject_reason",
"title",
"brief",
"proposal_id",
"target",
"funded",
"content",
"comments",
"updates",
"milestones",
"category",
"team",
"payout_address",
"deadline_duration",
"invites"
)
date_created = ma.Method("get_date_created")
date_approved = ma.Method("get_date_approved")
date_published = ma.Method("get_date_published")
proposal_id = ma.Method("get_proposal_id")
funded = ma.Method("get_funded")
comments = ma.Nested("CommentSchema", many=True)
updates = ma.Nested("ProposalUpdateSchema", many=True)
team = ma.Nested("UserSchema", many=True)
milestones = ma.Nested("MilestoneSchema", many=True)
invites = ma.Nested("ProposalTeamInviteSchema", many=True)
def get_proposal_id(self, obj):
return obj.id
def get_date_created(self, obj):
return dt_to_unix(obj.date_created)
def get_date_approved(self, obj):
return dt_to_unix(obj.date_approved) if obj.date_approved else None
def get_date_published(self, obj):
return dt_to_unix(obj.date_published) if obj.date_published else None
def get_funded(self, obj):
return obj.get_amount_funded()
proposal_schema = ProposalSchema()
proposals_schema = ProposalSchema(many=True)
user_fields = [
"proposal_id",
"status",
"title",
"brief",
"target",
"funded",
"date_created",
"date_approved",
"date_published",
"reject_reason",
"team",
]
user_proposal_schema = ProposalSchema(only=user_fields)
user_proposals_schema = ProposalSchema(many=True, only=user_fields)
class ProposalUpdateSchema(ma.Schema):
class Meta:
model = ProposalUpdate
# Fields to expose
fields = (
"update_id",
"date_created",
"proposal_id",
"title",
"content"
)
date_created = ma.Method("get_date_created")
proposal_id = ma.Method("get_proposal_id")
update_id = ma.Method("get_update_id")
def get_update_id(self, obj):
return obj.id
def get_proposal_id(self, obj):
return obj.proposal_id
def get_date_created(self, obj):
return dt_to_unix(obj.date_created)
proposal_update_schema = ProposalUpdateSchema()
proposals_update_schema = ProposalUpdateSchema(many=True)
class ProposalTeamInviteSchema(ma.Schema):
class Meta:
model = ProposalTeamInvite
fields = (
"id",
"date_created",
"address",
"accepted"
)
date_created = ma.Method("get_date_created")
def get_date_created(self, obj):
return dt_to_unix(obj.date_created)
proposal_team_invite_schema = ProposalTeamInviteSchema()
proposal_team_invites_schema = ProposalTeamInviteSchema(many=True)
# TODO: Find a way to extend ProposalTeamInviteSchema instead of redefining
class InviteWithProposalSchema(ma.Schema):
class Meta:
model = ProposalTeamInvite
fields = (
"id",
"date_created",
"address",
"accepted",
"proposal"
)
date_created = ma.Method("get_date_created")
proposal = ma.Nested("ProposalSchema")
def get_date_created(self, obj):
return dt_to_unix(obj.date_created)
invite_with_proposal_schema = InviteWithProposalSchema()
invites_with_proposal_schema = InviteWithProposalSchema(many=True)
class ProposalContributionSchema(ma.Schema):
class Meta:
model = ProposalContribution
# Fields to expose
fields = (
"id",
"proposal",
"user",
"status",
"tx_id",
"amount",
"date_created",
"addresses",
)
proposal = ma.Nested("ProposalSchema")
user = ma.Nested("UserSchema", exclude=["email_address"])
date_created = ma.Method("get_date_created")
addresses = ma.Method("get_addresses")
def get_date_created(self, obj):
return dt_to_unix(obj.date_created)
def get_addresses(self, obj):
return blockchain_get('/contribution/addresses', {'contributionId': obj.id})
proposal_contribution_schema = ProposalContributionSchema()
proposal_contributions_schema = ProposalContributionSchema(many=True)
user_proposal_contribution_schema = ProposalContributionSchema(exclude=['user', 'addresses'])
user_proposal_contributions_schema = ProposalContributionSchema(many=True, exclude=['user', 'addresses'])
proposal_proposal_contribution_schema = ProposalContributionSchema(exclude=['proposal', 'addresses'])
proposal_proposal_contributions_schema = ProposalContributionSchema(many=True, exclude=['proposal', 'addresses'])