import json
from pathlib import Path
import sys
from types import SimpleNamespace
import unittest
from unittest.mock import patch
import urllib.error

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / 'scripts'))
import migrate_nextcloud_backup_account as migration


class BackupAccountTests(unittest.TestCase):
    def test_requests_refuse_other_provider_origins(self):
        with patch.object(migration.urllib.request, 'build_opener') as opener:
            with self.assertRaises(migration.LaneError):
                migration.request('https://different.invalid/remote.php/dav', auth=('Backup','fixture'))
            opener.assert_not_called()

    def test_http_failure_exposes_only_status_not_credential_body(self):
        with patch.object(migration.urllib.request, 'build_opener') as opener:
            opener.return_value.open.side_effect = urllib.error.HTTPError('https://fixture.invalid/fixture-secret',403,'fixture-secret',{},None)
            self.assertEqual(migration.request(migration.HOST+'/probe'),(403,b''))

    def test_wrong_quota_rejects_before_cutover(self):
        body=b'<d:multistatus xmlns:d="DAV:"><d:quota-available-bytes>50</d:quota-available-bytes><d:quota-used-bytes>2</d:quota-used-bytes></d:multistatus>'
        with patch.object(migration,'request',return_value=(207,body)):
            with self.assertRaisesRegex(migration.LaneError,'quota_contract_mismatch'):
                migration.quota(('Backup','fixture'))

    def test_expected_version_mismatch_stops_before_provider_mutation(self):
        responses=[{'data':{'policies':['platform-admin']}}, {'data':{'data':{'BACKUP_USERNAME':'Backup','BACKUP_PASSWORD':'fixture'}}}, {'data':{'metadata':{'version':2},'data':{}}}]
        with patch.object(migration,'bao',side_effect=[SimpleNamespace(stdout=json.dumps(x).encode()) for x in responses]), patch.object(migration,'quota',return_value={}), patch.object(migration,'request') as provider:
            with self.assertRaisesRegex(migration.LaneError,'kv_version_changed'):
                migration.run(SimpleNamespace(expected_version=99),{})
            provider.assert_not_called()


if __name__=='__main__':
    unittest.main()