# -*- coding: utf-8 -*-
from odoo import models, fields, api
from odoo.exceptions import ValidationError

class StockPickingBatch(models.Model):
    _inherit = 'stock.picking.batch'

    zero_quantity_default = fields.Boolean(
        string='Quantités à zéro par défaut',
        default=True,
        help='Initialiser les quantités à zéro lors de la création du batch'
    )
    invoice_ids = fields.Many2many(
        'account.move',
        string='Factures associées',
        compute='_compute_invoice_ids',
        store=True
    )
    invoice_count = fields.Integer(
        string='Nombre de factures',
        compute='_compute_invoice_count',
        store=True,
        compute_sudo=True
    )

    def _prepare_move_line_vals(self, **kwargs):
        vals = super()._prepare_move_line_vals(**kwargs)
        if self.zero_quantity_default:
            vals['quantity'] = 0.0
        return vals

    @api.depends('picking_ids.move_ids.purchase_line_id.order_id.invoice_ids')
    def _compute_invoice_ids(self):
        for batch in self:
            purchase_orders = batch.picking_ids.move_ids.purchase_line_id.order_id
            batch.invoice_ids = purchase_orders.invoice_ids

    @api.depends('invoice_ids')
    def _compute_invoice_count(self):
        for batch in self:
            batch.invoice_count = len(batch.invoice_ids)

    def action_view_invoices(self):
        self.ensure_one()
        action = self.env['ir.actions.act_window']._for_xml_id(
            'account.action_move_in_invoice_type'
        )
        if self.invoice_count == 1:
            action['views'] = [(False, 'form')]
            action['res_id'] = self.invoice_ids.id
        else:
            action['domain'] = [('id', 'in', self.invoice_ids.ids)]
        return action

    @api.constrains('picking_ids')
    def _check_purchase_orders(self):
        for batch in self:
            partners = batch.picking_ids.purchase_id.partner_id
            if len(partners) > 1:
                raise ValidationError(
                    'Tous les bons de commande du batch doivent provenir du même fournisseur.'
                )