# Part of Odoo. See LICENSE file for full copyright and licensing details.

from odoo import _, api, fields, models
from odoo.exceptions import UserError


class AccountLoanPost(models.TransientModel):
    _name = "account.loan.post"
    _description = "Loan post"

    @api.model
    def _default_journal_id(self):
        loan_id = self.env.context.get("default_loan_id")
        if loan_id:
            return self.env["account.loan"].browse(loan_id).journal_id.id

    @api.model
    def _default_account_id(self):
        loan_id = self.env.context.get("default_loan_id")
        if loan_id:
            loan = self.env["account.loan"].browse(loan_id)
            if loan.is_leasing:
                return loan.leased_asset_account_id.id
            else:
                return loan.partner_id.with_company(
                    loan.company_id
                ).property_account_receivable_id.id

    loan_id = fields.Many2one(
        "account.loan",
        required=True,
        readonly=True,
    )
    journal_id = fields.Many2one(
        "account.journal", required=True, default=lambda r: r._default_journal_id()
    )
    account_id = fields.Many2one(
        "account.account", required=True, default=lambda r: r._default_account_id()
    )

    def move_line_vals(self):
        res = list()
        partner = self.loan_id.partner_id.with_company(self.loan_id.company_id)
        line = self.loan_id.line_ids.filtered(lambda r: r.sequence == 1)
        res.append(
            {
                "account_id": self.account_id.id,
                "partner_id": partner.id,
                "credit": 0,
                "debit": line.pending_principal_amount,
            }
        )
        if line.pending_principal_amount - line.long_term_pending_principal_amount > 0:
            res.append(
                {
                    "account_id": self.loan_id.short_term_loan_account_id.id,
                    "credit": (
                        line.pending_principal_amount
                        - line.long_term_pending_principal_amount
                    ),
                    "debit": 0,
                }
            )
        if (
            line.long_term_pending_principal_amount > 0
            and self.loan_id.long_term_loan_account_id
        ):
            res.append(
                {
                    "account_id": self.loan_id.long_term_loan_account_id.id,
                    "credit": line.long_term_pending_principal_amount,
                    "debit": 0,
                }
            )

        return res

    def move_vals(self):
        return {
            "loan_id": self.loan_id.id,
            "date": self.loan_id.start_date,
            "ref": self.loan_id.name,
            "journal_id": self.journal_id.id,
            "line_ids": [(0, 0, vals) for vals in self.move_line_vals()],
        }

    def run(self):
        self.ensure_one()
        if self.loan_id.state != "draft":
            raise UserError(_("Only loans in draft state can be posted"))
        self.loan_id.post()
        move = self.env["account.move"].create(self.move_vals())
        move.action_post()