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


class DepositDeductionWizard(models.TransientModel):
    _name = 'deposit.deduction.wizard'
    _description = 'Security Deposit Deduction'

    order_id = fields.Many2one(
        'sale.order',
        string="Rental Order",
        required=True,
        readonly=True,
    )
    deposit_total = fields.Float(
        string="Deposit Amount",
        readonly=True,
    )
    deduction_amount = fields.Float(
        string="Deduction Amount",
        required=True,
        help="Amount to deduct from the security deposit for damages.",
    )
    reason = fields.Text(
        string="Reason for Deduction",
        required=True,
    )
    remaining_preview = fields.Float(
        string="Remaining to Refund",
        compute='_compute_remaining_preview',
    )
    overage_preview = fields.Float(
        string="Additional Invoice Amount",
        compute='_compute_remaining_preview',
        help="Amount exceeding the deposit that will be invoiced to the customer.",
    )

    @api.depends('deposit_total', 'deduction_amount')
    def _compute_remaining_preview(self):
        for wizard in self:
            diff = wizard.deposit_total - wizard.deduction_amount
            if diff >= 0:
                wizard.remaining_preview = diff
                wizard.overage_preview = 0.0
            else:
                wizard.remaining_preview = 0.0
                wizard.overage_preview = abs(diff)

    def action_confirm_deduction(self):
        self.ensure_one()
        if self.deduction_amount <= 0:
            raise UserError(_("Deduction amount must be greater than zero."))

        order = self.order_id
        order._deduct_security_deposit(self.deduction_amount)
        order.message_post(body=_(
            "Security deposit deduction of %s processed.\nReason: %s",
            self.env['ir.qweb.field.monetary'].value_to_html(
                self.deduction_amount,
                {'display_currency': order.currency_id},
            ),
            self.reason,
        ))
        return {'type': 'ir.actions.act_window_close'}