from odoo.exceptions import UserError
from odoo.tests.common import TransactionCase, tagged


@tagged('post_install', '-at_install')
class TestSafetyGuard(TransactionCase):
    """Verify the safety guard blocks Enterprise uninstall when migration hasn't run."""

    def test_uninstall_not_blocked_when_migration_completed(self):
        """If the per-module migration flag is set, uninstall is allowed.

        Skip if account_accountant isn't installed -- otherwise the guard's
        `if not installed: continue` short-circuit would make this test pass
        vacuously without exercising the flag-check branch.
        """
        Module = self.env['ir.module.module'].sudo()
        if not Module.search_count([
            ('name', '=', 'account_accountant'),
            ('state', '=', 'installed'),
        ]):
            self.skipTest("account_accountant not installed in this DB")
        self.env['ir.config_parameter'].sudo().set_param(
            'fusion_accounting.migration.account_accountant.completed', 'True'
        )
        guard = Module._fusion_check_uninstall_guard(['account_accountant'])
        self.assertTrue(guard, "Guard should pass when migration flag is set")

    def test_uninstall_blocked_when_migration_pending(self):
        """If account_accountant is installed and migration not run, raise."""
        self.env['ir.config_parameter'].sudo().set_param(
            'fusion_accounting.migration.account_accountant.completed', 'False'
        )
        Module = self.env['ir.module.module'].sudo()
        installed = Module.search_count([
            ('name', '=', 'account_accountant'),
            ('state', '=', 'installed'),
        ])
        if not installed:
            self.skipTest("account_accountant not installed in this DB")
        with self.assertRaises(UserError) as ctx:
            Module._fusion_check_uninstall_guard(['account_accountant'])
        self.assertIn('migration', str(ctx.exception).lower())