from odoo import fields, models


class IfcDocumentRevision(models.Model):
    _name = 'grt.ifc.document.revision'
    _description = 'IFC Document Revision'
    _order = 'revision_number desc, id desc'

    project_id = fields.Many2one(
        'grt.ifc.project',
        string='IFC Document',
        required=True,
        ondelete='cascade',
        index=True,
    )
    revision_number = fields.Integer(string='Revision', required=True, default=1, index=True)
    revision_label = fields.Char(string='Revision Label', compute='_compute_revision_label', store=True)
    revision_date = fields.Datetime(string='Revision Date', default=fields.Datetime.now, required=True)
    revised_by_id = fields.Many2one(
        'res.users',
        string='Revised By',
        default=lambda self: self.env.user,
        required=True,
        index=True,
    )
    revision_note = fields.Text(string='Revision Notes')
    file_data = fields.Binary(string='IFC File Snapshot', attachment=True)
    file_name = fields.Char(string='File Name')
    is_current = fields.Boolean(string='Current Revision', default=False, index=True)

    def _compute_revision_label(self):
        for record in self:
            record.revision_label = 'R%02d' % (record.revision_number or 0)