firefox/SOURCES/use_yandex_search_as_default.py

import json
import sys
import datetime

YANDEX_SECTION = json.loads('''
    {
      "appliesTo": [
        {
          "default": "yes",
          "included": {
            "everywhere": true
          }
        }
      ],
      "id": "a0e7f96a-14e0-4d56-9f54-e0c7e49fd306",
      "last_modified": 1679065511545,
      "schema": 1639069022290,
      "webExtension": {
        "id": "yandex@search.mozilla.org"
      }
    }
''')

search_config = None
with open(sys.argv[1]) as f:
    search_config = json.load(f)

inserted = False
for engine in search_config["data"]:
  if engine["webExtension"]["id"] == "yandex@search.mozilla.org":
    inserted = True
    engine = YANDEX_SECTION
  else:
    for applies in engine["appliesTo"]:
      if "default" in applies and applies["default"] == "yes":
        applies["default"] = "no"

if not inserted:
  search_config["data"] = [YANDEX_SECTION] + search_config["data"]

search_config["timestamp"] = int( datetime.datetime.now().timestamp() ) * 1000

with open(sys.argv[1], 'w') as f:
    json.dump(search_config, f, indent=2)