feat(gitea): create Renovate labels for a new repo

templates.py

@@ -112,6 +112,58 @@ def update(args: argparse.Namespace) -> None:
             print(f"committed {file.stem} update")
 
 
+GITEA = os.environ.get("GITEA_URL", "https://git.kotikot.com").rstrip("/")
+RENOVATE_LABELS = [
+    ("renovate", "1f6feb", "Pull request from the Renovate bot"),
+    ("wait-3d", "d29922", "Waits three days: the registry has no release timestamp, the age gate merges it"),
+    ("deps-code", "7d8590", "Code dependencies: pull requests are collected, nothing merges itself"),
+]
+
+
+def gitea_token() -> str:
+    token = os.environ.get("GITEA_TOKEN", "")
+    if token:
+        return token
+    path = Path.home() / ".config/gitea/token"
+    if path.exists():
+        return path.read_text(encoding="utf-8").strip()
+    sys.exit("no Gitea token: set GITEA_TOKEN or write ~/.config/gitea/token")
+
+
+def gitea(args: argparse.Namespace) -> None:
+    """Prepare a Gitea repo for Renovate: the labels it fails without."""
+    import json
+    import urllib.error
+    import urllib.request
+
+    token = gitea_token()
+    for name, color, description in RENOVATE_LABELS:
+        body = json.dumps({"name": name, "color": color, "description": description}).encode()
+        request = urllib.request.Request(
+            f"{GITEA}/api/v1/repos/{args.repo}/labels",
+            data=body,
+            method="POST",
+            headers={"Authorization": f"token {token}", "Content-Type": "application/json"},
+        )
+        try:
+            urllib.request.urlopen(request, timeout=30)
+            print(f"label {name}: created")
+        except urllib.error.HTTPError as error:
+            if error.code in (409, 422):
+                print(f"label {name}: already there")
+            else:
+                sys.exit(f"label {name}: {error.code} {error.read()[:200]!r}")
+
+    print(
+        "\nLabels done. Two things are still manual, and neither happens by itself:\n"
+        f"  1. renovate.jsonc in {args.repo} with"
+        ' {"extends": ["local>templates/renovate"]}\n'
+        "  2. the repo added to `repositories` in renovate-config.js of infra/komodo,\n"
+        "     plus the bot given write access to it. Extending the preset subscribes\n"
+        "     nothing: the bot only visits repos named in that list."
+    )
+
+
 def main() -> None:
     parser = argparse.ArgumentParser(prog="templates")
     sub = parser.add_subparsers(dest="command", required=True)
@@ -130,6 +182,9 @@ def main() -> None:
     u.add_argument("--ask", action="store_true", help="ask every question again")
     u.add_argument("--defaults", action="store_true")
     u.set_defaults(func=update)
+    g = sub.add_parser("gitea", help="Create the Renovate labels a repo needs")
+    g.add_argument("repo", help="org/name on Gitea")
+    g.set_defaults(func=gitea)
     args = parser.parse_args()
     args.func(args)