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account-financial-tools/account_loan/wizards/account_loan_pay_amount.py

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# Copyright 2018 Creu Blanca
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
from odoo import _, api, fields, models
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from odoo.exceptions import UserError
class AccountLoan(models.TransientModel):
_name = "account.loan.pay.amount"
_description = "Loan pay amount"
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loan_id = fields.Many2one(
"account.loan",
required=True,
readonly=True,
)
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currency_id = fields.Many2one(
"res.currency", related="loan_id.currency_id", readonly=True
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)
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cancel_loan = fields.Boolean(
default=False,
)
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date = fields.Date(required=True, default=fields.Date.today())
amount = fields.Monetary(
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currency_field="currency_id",
string="Amount to reduce from Principal",
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)
fees = fields.Monetary(currency_field="currency_id", string="Bank fees")
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@api.onchange("cancel_loan")
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def _onchange_cancel_loan(self):
if self.cancel_loan:
self.amount = max(
self.loan_id.line_ids.filtered(lambda r: not r.move_ids).mapped(
"pending_principal_amount"
)
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)
def new_line_vals(self, sequence):
return {
"loan_id": self.loan_id.id,
"sequence": sequence,
"payment_amount": self.amount + self.fees,
"rate": 0,
"interests_amount": self.fees,
"date": self.date,
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}
def run(self):
self.ensure_one()
if self.loan_id.is_leasing:
if self.loan_id.line_ids.filtered(
lambda r: r.date <= self.date and not r.move_ids
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):
raise UserError(_("Some invoices are not created"))
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if self.loan_id.line_ids.filtered(
lambda r: r.date > self.date and r.move_ids
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):
raise UserError(_("Some future invoices already exists"))
else:
if self.loan_id.line_ids.filtered(
lambda r: r.date < self.date and not r.move_ids
):
raise UserError(_("Some moves are not created"))
if self.loan_id.line_ids.filtered(
lambda r: r.date > self.date and r.move_ids
):
raise UserError(_("Some future moves already exists"))
lines = self.loan_id.line_ids.filtered(lambda r: r.date > self.date).sorted(
"sequence", reverse=True
)
sequence = min(lines.mapped("sequence"))
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for line in lines:
line.sequence += 1
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line.flush_recordset()
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old_line = lines.filtered(lambda r: r.sequence == sequence + 1)
pending = old_line.pending_principal_amount
if self.loan_id.currency_id.compare_amounts(self.amount, pending) == 1:
raise UserError(_("Amount cannot be bigger than debt"))
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if self.loan_id.currency_id.compare_amounts(self.amount, 0) <= 0:
raise UserError(_("Amount cannot be less than zero"))
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self.loan_id.periods += 1
self.loan_id.fixed_periods = self.loan_id.periods - sequence
self.loan_id.fixed_loan_amount = pending - self.amount
new_line = self.env["account.loan.line"].create(self.new_line_vals(sequence))
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new_line.long_term_pending_principal_amount = (
old_line.long_term_pending_principal_amount
)
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amount = self.loan_id.loan_amount
for line in self.loan_id.line_ids.sorted("sequence"):
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if line.move_ids:
amount = line.final_pending_principal_amount
else:
line.pending_principal_amount = amount
if line.sequence != sequence:
line.rate = self.loan_id.rate_period
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line._check_amount()
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amount -= line.payment_amount - line.interests_amount
if self.loan_id.long_term_loan_account_id:
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self.loan_id._check_long_term_principal_amount()
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if self.loan_id.currency_id.compare_amounts(pending, self.amount) == 0:
self.loan_id.write({"state": "cancelled"})
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return new_line.view_process_values()