"""Inherit account.move.line to link to fusion.asset records.

Lets us trace assets back to their source invoice line.
"""

from odoo import fields, models


class AccountMoveLine(models.Model):
    _inherit = "account.move.line"

    fusion_asset_id = fields.Many2one(
        'fusion.asset', string='Created Asset',
        copy=False, ondelete='set null',
        help="Fusion asset record created from this invoice line.",
    )

    fusion_asset_count = fields.Integer(compute='_compute_fusion_asset_count')

    def _compute_fusion_asset_count(self):
        for line in self:
            line.fusion_asset_count = 1 if line.fusion_asset_id else 0

    def action_open_fusion_asset(self):
        self.ensure_one()
        if not self.fusion_asset_id:
            return
        return {
            'type': 'ir.actions.act_window',
            'res_model': 'fusion.asset',
            'res_id': self.fusion_asset_id.id,
            'view_mode': 'form',
            'target': 'current',
        }