"""Reverse linkage from account.move back to source documents."""

from odoo import _, fields, models


class AccountMove(models.Model):
    _inherit = 'account.move'

    source_document_ids = fields.One2many(
        'documents.document',
        'move_id',
        string='Source Documents',
        readonly=True,
        help="Documents in the Documents app that were used to create this move.",
    )
    source_document_count = fields.Integer(
        string='Source Document Count',
        compute='_compute_source_document_count',
    )

    def _compute_source_document_count(self):
        for m in self:
            m.source_document_count = len(m.source_document_ids)

    def action_open_source_documents(self):
        self.ensure_one()
        return {
            'type': 'ir.actions.act_window',
            'name': _('Source Documents'),
            'res_model': 'documents.document',
            'view_mode': 'kanban,list',
            'domain': [('move_id', '=', self.id)],
        }