From 1f01affc41b310661916b85b74364421c6013568 Mon Sep 17 00:00:00 2001
From: Jens Tirsvad Nielsen <jenstirsvad@gmail.com>
Date: Sat, 3 Oct 2026 12:47:54 +0800
Subject: [PATCH] Add GitHub metadata sync workflow

---
 .gitea/workflows/sync-github-metadata.yml | 96 +++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 .gitea/workflows/sync-github-metadata.yml

diff --git a/.gitea/workflows/sync-github-metadata.yml b/.gitea/workflows/sync-github-metadata.yml
new file mode 100644
index 0000000..a5daba4
--- /dev/null
+++ b/.gitea/workflows/sync-github-metadata.yml
@@ -0,0 +1,96 @@
+name: Sync GitHub mirror metadata
+
+on:
+  push:
+  workflow_dispatch:
+  schedule:
+    - cron: "17 3 * * *"
+
+jobs:
+  sync-metadata:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Sync description and topics
+        env:
+          GITEA_API_URL: ${{ gitea.api_url }}
+          GITEA_TOKEN: ${{ gitea.token }}
+          SOURCE_REPOSITORY: ${{ gitea.repository }}
+          GITHUB_CREDENTIALS: ${{ secrets.CREDENTIALS_FOR_GITHUB }}
+          GITHUB_REPO: Tirsvad-Udemy-100_days_of_code
+        run: |
+          python3 - <<'PY'
+          import json
+          import os
+          import urllib.error
+          import urllib.request
+
+          def request_json(url, method="GET", headers=None, body=None):
+              request = urllib.request.Request(
+                  url,
+                  data=json.dumps(body).encode("utf-8") if body is not None else None,
+                  headers=headers or {},
+                  method=method,
+              )
+              try:
+                  with urllib.request.urlopen(request, timeout=30) as response:
+                      content = response.read()
+                      return json.loads(content) if content else None
+              except urllib.error.HTTPError as error:
+                  raise RuntimeError(
+                      f"API request failed with HTTP {error.code} ({error.reason})"
+                  ) from None
+
+          credentials = json.loads(os.environ["GITHUB_CREDENTIALS"])
+          github_token = credentials.get("GITHUB_PAT")
+          github_user = credentials.get("GITHUB_USER")
+
+          if not github_token or not github_user:
+              raise RuntimeError(
+                  "CREDENTIALS_FOR_GITHUB must contain GITHUB_PAT and GITHUB_USER."
+              )
+
+          source_owner, separator, source_repo = os.environ[
+              "SOURCE_REPOSITORY"
+          ].partition("/")
+          if not separator or not source_owner or not source_repo:
+              raise RuntimeError("Could not determine the Gitea source repository.")
+
+          gitea_api_url = os.environ["GITEA_API_URL"].rstrip("/")
+          source_url = (
+              f"{gitea_api_url}/repos/{source_owner}/{source_repo}"
+          )
+          source = request_json(
+              source_url,
+              headers={
+                  "Authorization": f"token {os.environ['GITEA_TOKEN']}",
+                  "Accept": "application/json",
+              },
+          )
+
+          github_repo = os.environ["GITHUB_REPO"]
+          github_api_url = (
+              f"https://api.github.com/repos/{github_user}/{github_repo}"
+          )
+          github_headers = {
+              "Authorization": f"Bearer {github_token}",
+              "Accept": "application/vnd.github+json",
+              "X-GitHub-Api-Version": "2022-11-28",
+              "Content-Type": "application/json",
+          }
+
+          request_json(
+              github_api_url,
+              method="PATCH",
+              headers=github_headers,
+              body={"description": source.get("description") or ""},
+          )
+
+          request_json(
+              f"{github_api_url}/topics",
+              method="PUT",
+              headers=github_headers,
+              body={"names": source.get("topics") or []},
+          )
+
+          print(f"Synced description and topics to {github_user}/{github_repo}.")
+          PY