435 lines
16 KiB
Python
435 lines
16 KiB
Python
# Copyright 2018 Creu Blanca
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# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
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import logging
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from odoo import _, api, fields, models
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from odoo.exceptions import UserError
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_logger = logging.getLogger(__name__)
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try:
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import numpy_financial
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except (ImportError, IOError) as err:
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_logger.error(err)
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class AccountLoanLine(models.Model):
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_name = "account.loan.line"
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_description = "Annuity"
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_order = "sequence asc"
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name = fields.Char(compute="_compute_name")
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loan_id = fields.Many2one(
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"account.loan", required=True, readonly=True, ondelete="cascade",
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)
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is_leasing = fields.Boolean(related="loan_id.is_leasing", readonly=True,)
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loan_type = fields.Selection(
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[
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("fixed-annuity", "Fixed Annuity"),
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("fixed-principal", "Fixed Principal"),
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("interest", "Only interest"),
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],
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related="loan_id.loan_type",
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readonly=True,
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)
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loan_state = fields.Selection(
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[
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("draft", "Draft"),
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("posted", "Posted"),
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("cancelled", "Cancelled"),
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("closed", "Closed"),
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],
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related="loan_id.state",
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readonly=True,
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store=True,
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)
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sequence = fields.Integer(required=True, readonly=True)
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date = fields.Date(
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required=True, readonly=True, help="Date when the payment will be accounted",
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)
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long_term_loan_account_id = fields.Many2one(
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"account.account", readony=True, related="loan_id.long_term_loan_account_id",
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)
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currency_id = fields.Many2one("res.currency", related="loan_id.currency_id",)
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rate = fields.Float(required=True, readonly=True, digits=(8, 6),)
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pending_principal_amount = fields.Monetary(
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currency_field="currency_id",
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readonly=True,
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help="Pending amount of the loan before the payment",
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)
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long_term_pending_principal_amount = fields.Monetary(
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currency_field="currency_id",
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readonly=True,
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help="Pending amount of the loan before the payment that will not be "
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"payed in, at least, 12 months",
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)
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payment_amount = fields.Monetary(
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currency_field="currency_id",
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readonly=True,
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help="Total amount that will be payed (Annuity)",
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)
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interests_amount = fields.Monetary(
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currency_field="currency_id",
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readonly=True,
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help="Amount of the payment that will be assigned to interests",
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)
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principal_amount = fields.Monetary(
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currency_field="currency_id",
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compute="_compute_amounts",
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help="Amount of the payment that will reduce the pending loan amount",
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)
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long_term_principal_amount = fields.Monetary(
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currency_field="currency_id",
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readonly=True,
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help="Amount that will reduce the pending loan amount on long term",
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)
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final_pending_principal_amount = fields.Monetary(
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currency_field="currency_id",
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compute="_compute_amounts",
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help="Pending amount of the loan after the payment",
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)
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move_ids = fields.One2many("account.move", inverse_name="loan_line_id",)
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has_moves = fields.Boolean(compute="_compute_has_moves")
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has_invoices = fields.Boolean(compute="_compute_has_invoices")
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_sql_constraints = [
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(
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"sequence_loan",
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"unique(loan_id, sequence)",
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"Sequence must be unique in a loan",
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)
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]
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@api.depends("move_ids")
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def _compute_has_moves(self):
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for record in self:
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record.has_moves = bool(record.move_ids)
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@api.depends("move_ids")
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def _compute_has_invoices(self):
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for record in self:
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record.has_invoices = bool(record.move_ids)
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@api.depends("loan_id.name", "sequence")
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def _compute_name(self):
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for record in self:
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record.name = "%s-%d" % (record.loan_id.name, record.sequence)
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@api.depends("payment_amount", "interests_amount", "pending_principal_amount")
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def _compute_amounts(self):
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for rec in self:
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rec.final_pending_principal_amount = (
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rec.pending_principal_amount - rec.payment_amount + rec.interests_amount
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)
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rec.principal_amount = rec.payment_amount - rec.interests_amount
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def compute_amount(self):
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"""
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Computes the payment amount
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:return: Amount to be payed on the annuity
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"""
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if self.sequence == self.loan_id.periods:
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return (
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self.pending_principal_amount
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+ self.interests_amount
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- self.loan_id.residual_amount
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)
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if self.loan_type == "fixed-principal" and self.loan_id.round_on_end:
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return self.loan_id.fixed_amount + self.interests_amount
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if self.loan_type == "fixed-principal":
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return (self.pending_principal_amount - self.loan_id.residual_amount) / (
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self.loan_id.periods - self.sequence + 1
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) + self.interests_amount
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if self.loan_type == "interest":
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return self.interests_amount
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if self.loan_type == "fixed-annuity" and self.loan_id.round_on_end:
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return self.loan_id.fixed_amount
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if self.loan_type == "fixed-annuity":
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return self.currency_id.round(
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-numpy_financial.pmt(
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self.loan_id.loan_rate() / 100,
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self.loan_id.periods - self.sequence + 1,
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self.pending_principal_amount,
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-self.loan_id.residual_amount,
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)
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)
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if self.loan_type == "fixed-annuity-begin" and self.loan_id.round_on_end:
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return self.loan_id.fixed_amount
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if self.loan_type == "fixed-annuity-begin":
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return self.currency_id.round(
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-numpy_financial.pmt(
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self.loan_id.loan_rate() / 100,
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self.loan_id.periods - self.sequence + 1,
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self.pending_principal_amount,
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-self.loan_id.residual_amount,
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when="begin",
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)
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)
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def check_amount(self):
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"""Recompute amounts if the annuity has not been processed"""
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if self.move_ids:
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raise UserError(
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_("Amount cannot be recomputed if moves or invoices exists " "already")
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)
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if (
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self.sequence == self.loan_id.periods
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and self.loan_id.round_on_end
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and self.loan_type in ["fixed-annuity", "fixed-annuity-begin"]
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):
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self.interests_amount = self.currency_id.round(
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self.loan_id.fixed_amount
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- self.pending_principal_amount
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+ self.loan_id.residual_amount
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)
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self.payment_amount = self.currency_id.round(self.compute_amount())
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elif not self.loan_id.round_on_end:
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self.interests_amount = self.currency_id.round(self.compute_interest())
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self.payment_amount = self.currency_id.round(self.compute_amount())
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else:
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self.interests_amount = self.compute_interest()
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self.payment_amount = self.compute_amount()
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def compute_interest(self):
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if self.loan_type == "fixed-annuity-begin":
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return -numpy_financial.ipmt(
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self.loan_id.loan_rate() / 100,
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2,
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self.loan_id.periods - self.sequence + 1,
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self.pending_principal_amount,
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-self.loan_id.residual_amount,
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when="begin",
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)
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return self.pending_principal_amount * self.loan_id.loan_rate() / 100
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def check_move_amount(self):
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"""
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Changes the amounts of the annuity once the move is posted
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:return:
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"""
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self.ensure_one()
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interests_moves = self.move_ids.mapped("line_ids").filtered(
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lambda r: r.account_id == self.loan_id.interest_expenses_account_id
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)
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short_term_moves = self.move_ids.mapped("line_ids").filtered(
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lambda r: r.account_id == self.loan_id.short_term_loan_account_id
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)
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long_term_moves = self.move_ids.mapped("line_ids").filtered(
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lambda r: r.account_id == self.loan_id.long_term_loan_account_id
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)
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self.interests_amount = sum(interests_moves.mapped("debit")) - sum(
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interests_moves.mapped("credit")
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)
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self.long_term_principal_amount = sum(long_term_moves.mapped("debit")) - sum(
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long_term_moves.mapped("credit")
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)
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self.payment_amount = (
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sum(short_term_moves.mapped("debit"))
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- sum(short_term_moves.mapped("credit"))
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+ self.long_term_principal_amount
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+ self.interests_amount
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)
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def move_vals(self):
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return {
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"loan_line_id": self.id,
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"loan_id": self.loan_id.id,
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"date": self.date,
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"ref": self.name,
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"journal_id": self.loan_id.journal_id.id,
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"line_ids": [(0, 0, vals) for vals in self.move_line_vals()],
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}
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def move_line_vals(self):
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vals = []
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partner = self.loan_id.partner_id.with_context(
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force_company=self.loan_id.company_id.id
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)
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vals.append(
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{
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"account_id": partner.property_account_payable_id.id,
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"partner_id": partner.id,
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"credit": self.payment_amount,
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"debit": 0,
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}
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)
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vals.append(
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{
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"account_id": self.loan_id.interest_expenses_account_id.id,
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"credit": 0,
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"debit": self.interests_amount,
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}
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)
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vals.append(
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{
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"account_id": self.loan_id.short_term_loan_account_id.id,
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"credit": 0,
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"debit": self.payment_amount - self.interests_amount,
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}
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)
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if self.long_term_loan_account_id and self.long_term_principal_amount:
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vals.append(
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{
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"account_id": self.loan_id.short_term_loan_account_id.id,
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"credit": self.long_term_principal_amount,
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"debit": 0,
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}
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)
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vals.append(
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{
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"account_id": self.long_term_loan_account_id.id,
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"credit": 0,
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"debit": self.long_term_principal_amount,
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}
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)
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return vals
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def invoice_vals(self):
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return {
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"loan_line_id": self.id,
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"loan_id": self.loan_id.id,
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"type": "in_invoice",
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"partner_id": self.loan_id.partner_id.id,
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"invoice_date": self.date,
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"journal_id": self.loan_id.journal_id.id,
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"company_id": self.loan_id.company_id.id,
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"invoice_line_ids": [(0, 0, vals) for vals in self.invoice_line_vals()],
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}
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def invoice_line_vals(self):
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vals = list()
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vals.append(
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{
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"product_id": self.loan_id.product_id.id,
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"name": self.loan_id.product_id.name,
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"quantity": 1,
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"price_unit": self.principal_amount,
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"account_id": self.loan_id.short_term_loan_account_id.id,
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}
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)
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vals.append(
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{
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"product_id": self.loan_id.interests_product_id.id,
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"name": self.loan_id.interests_product_id.name,
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"quantity": 1,
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"price_unit": self.interests_amount,
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"account_id": self.loan_id.interest_expenses_account_id.id,
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}
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)
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return vals
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def generate_move(self):
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"""
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Computes and post the moves of loans
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:return: list of account.move generated
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"""
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res = []
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for record in self:
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if not record.move_ids:
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if record.loan_id.line_ids.filtered(
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lambda r: r.date < record.date and not r.move_ids
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):
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raise UserError(_("Some moves must be created first"))
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move = self.env["account.move"].create(record.move_vals())
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move.post()
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res.append(move.id)
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return res
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def generate_invoice(self):
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"""
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Computes invoices of leases
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:return: list of account.move generated
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"""
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res = []
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for record in self:
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if not record.move_ids:
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if record.loan_id.line_ids.filtered(
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lambda r: r.date < record.date and not r.move_ids
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):
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raise UserError(_("Some invoices must be created first"))
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invoice = self.env["account.move"].create(record.invoice_vals())
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res.append(invoice.id)
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for line in invoice.invoice_line_ids:
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line.tax_ids = line._get_computed_taxes()
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invoice.with_context(
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check_move_validity=False
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)._recompute_dynamic_lines(recompute_all_taxes=True)
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invoice._check_balanced()
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if (
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record.long_term_loan_account_id
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and record.long_term_principal_amount != 0
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):
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invoice.write({"line_ids": record._get_long_term_move_line_vals()})
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if record.loan_id.post_invoice:
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invoice.post()
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return res
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def _get_long_term_move_line_vals(self):
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return [
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(
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0,
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0,
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{
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"account_id": self.loan_id.short_term_loan_account_id.id,
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"credit": self.long_term_principal_amount,
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"debit": 0,
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"exclude_from_invoice_tab": True,
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},
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),
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(
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0,
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0,
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{
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"account_id": self.long_term_loan_account_id.id,
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"credit": 0,
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"debit": self.long_term_principal_amount,
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"exclude_from_invoice_tab": True,
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},
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),
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]
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def view_account_values(self):
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"""Shows the invoice if it is a leasing or the move if it is a loan"""
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self.ensure_one()
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if self.is_leasing:
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return self.view_account_invoices()
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return self.view_account_moves()
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def view_process_values(self):
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"""Computes the annuity and returns the result"""
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self.ensure_one()
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if self.is_leasing:
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self.generate_invoice()
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else:
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self.generate_move()
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return self.view_account_values()
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def view_account_moves(self):
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self.ensure_one()
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action = self.env.ref("account.action_move_line_form")
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result = action.read()[0]
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result["context"] = {
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"default_loan_line_id": self.id,
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"default_loan_id": self.loan_id.id,
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}
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result["domain"] = [("loan_line_id", "=", self.id)]
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if len(self.move_ids) == 1:
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res = self.env.ref("account.move.form", False)
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result["views"] = [(res and res.id or False, "form")]
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result["res_id"] = self.move_ids.id
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return result
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def view_account_invoices(self):
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self.ensure_one()
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action = self.env.ref("account.action_move_out_invoice_type")
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result = action.read()[0]
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result["context"] = {
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"default_loan_line_id": self.id,
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"default_loan_id": self.loan_id.id,
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}
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result["domain"] = [("loan_line_id", "=", self.id), ("type", "=", "in_invoice")]
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if len(self.move_ids) == 1:
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res = self.env.ref("account.view_move_form", False)
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result["views"] = [(res and res.id or False, "form")]
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result["res_id"] = self.move_ids.id
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return result
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