96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
"""Module containing account related models."""
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# vim: set tw=80 ts=4 sw=4 sts=4:
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from . import db
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from .operations import Operation
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# pylint: disable=no-member,invalid-name,too-few-public-methods,no-self-use
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class Account(db.Model):
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"""Model class to handle accounts."""
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id = db.Column(db.Integer, primary_key=True)
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name = db.Column(db.String(200), nullable=False)
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authorized_overdraft = db.Column(db.Integer, nullable=True, default=0)
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def __init__(self, name, authorized_overdraft):
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self.name = name
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self.authorized_overdraft = authorized_overdraft
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@classmethod
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def query(cls):
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"""Return a query for this class method."""
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return db.session.query(
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cls
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).order_by(
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cls.name
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)
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def solds(self):
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"""Return the balances of this account."""
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return self.balances()
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def balances(self):
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"""Return the balances of this account."""
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return db.session.query(
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db.func.sum(Operation.value).label("future"),
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db.func.sum(
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db.case(
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[(Operation.pointed,
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Operation.value)],
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else_=0
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)
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).label("pointed"),
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db.func.sum(
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db.case(
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[(Operation.operation_date <= db.func.current_date(),
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Operation.value)],
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else_=0
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)
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).label("current"),
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).filter(
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Operation.account_id == self.id
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).one()
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def balance(self, begin, end):
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"""Return the flow for a specific time period."""
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return self.flow(begin, end)
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def flow(self, begin, end):
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"""Return the flow for a specific time period."""
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query = db.session.query(
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db.func.sum(
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db.case(
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[(db.func.sign(Operation.value) == -1, Operation.value)],
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else_=0
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)
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).label("expenses"),
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db.func.sum(
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db.case(
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[(db.func.sign(Operation.value) == 1, Operation.value)],
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else_=0
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)
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).label("revenues"),
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db.func.sum(Operation.value).label("balance")
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).filter(
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Operation.account_id == self.id,
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)
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if begin:
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query = query.filter(Operation.operation_date >= str(begin))
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if end:
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query = query.filter(Operation.operation_date <= str(end))
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return query.one()
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@db.validates('authorized_overdraft')
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def validate_authorized_overdraft(self, key, authorized_overdraft):
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"""Validator for authorized_overdraft : must be negative."""
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del key
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assert authorized_overdraft <= 0
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return authorized_overdraft
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