Migrate translations_develop script (#33933)

* Migrate translations_develop script

* Fix lint

script/translations/develop.py

@@ -0,0 +1,63 @@
+"""Compile the current translation strings files for testing."""
+import argparse
+import json
+from pathlib import Path
+from shutil import rmtree
+import sys
+
+from . import download, upload
+from .const import INTEGRATIONS_DIR
+from .util import get_base_arg_parser
+
+
+def valid_integration(integration):
+    """Test if it's a valid integration."""
+    if not (INTEGRATIONS_DIR / integration).is_dir():
+        raise argparse.ArgumentTypeError(
+            f"The integration {integration} does not exist."
+        )
+
+    return integration
+
+
+def get_arguments() -> argparse.Namespace:
+    """Get parsed passed in arguments."""
+    parser = get_base_arg_parser()
+    parser.add_argument(
+        "--integration", type=valid_integration, help="Integration to process."
+    )
+    return parser.parse_args()
+
+
+def run():
+    """Run the script."""
+    args = get_arguments()
+    if args.integration:
+        integration = args.integration
+    else:
+        integration = None
+        while (
+            integration is None
+            or not Path(f"homeassistant/components/{integration}").exists()
+        ):
+            if integration is not None:
+                print(f"Integration {integration} doesn't exist!")
+                print()
+            integration = input("Integration to process: ")
+
+    translations = upload.generate_upload_data()
+
+    if integration not in translations["component"]:
+        print("Integration has no strings.json")
+        sys.exit(1)
+
+    if download.DOWNLOAD_DIR.is_dir():
+        rmtree(str(download.DOWNLOAD_DIR))
+
+    download.DOWNLOAD_DIR.mkdir(parents=True)
+
+    (download.DOWNLOAD_DIR / "en.json").write_text(
+        json.dumps({"component": {integration: translations["component"][integration]}})
+    )
+
+    download.write_integration_translations()