formatters: add github

matrix_webhook/formatters.py

@@ -13,3 +13,20 @@ def grafana(data, headers):
             text = text + "* " + match["metric"] + ": " + str(match["value"]) + "\n"
     data["body"] = text
     return data
+
+
+def github(data, headers):
+    """Pretty-print a github notification."""
+    # TODO: Write nice useful formatters. This is only an example.
+    if headers["X-GitHub-Event"] == "push":
+        pusher, ref, a, b, c = [
+            data[k] for k in ["pusher", "ref", "after", "before", "compare"]
+        ]
+        pusher = f"[{pusher['name']}](https://github.com/{pusher['name']})"
+        data["body"] = f"@{pusher} pushed on {ref}: [{b} → {a}]({c}):\n\n"
+        for commit in data["commits"]:
+            data["body"] += f"- [{commit['message']}]({commit['url']})\n"
+    else:
+        data["body"] = "notification from github"
+    data["digest"] = headers["X-Hub-Signature-256"].replace("sha256=", "")
+    return data