Add a script to help generate release notes from merged pull requests

dev_scripts/generate-release-notes.py

@@ -0,0 +1,67 @@
+import sys
+
+import requests
+
+REPOSITORY = "https://github.com/freedomofpress/dangerzone/"
+TEMPLATE = "- {title} ([#{number}]({url}))"
+
+
+def get_prs_since_last_release(owner, repo):
+    session = requests.Session()
+    session.headers["Accept"] = "application/vnd.github.v3+json"
+
+    # Try to get latest release
+    response = session.get(
+        f"https://api.github.com/repos/{owner}/{repo}/releases/latest"
+    )
+    since = None
+    if response.ok:
+        since = response.json()["published_at"]
+
+    # Get merged PRs
+    response = session.get(
+        f"https://api.github.com/repos/{owner}/{repo}/pulls",
+        params={
+            "state": "closed",
+            "sort": "updated",
+            "direction": "desc",
+            "per_page": 100,
+        },
+    )
+    response.raise_for_status()
+
+    prs = []
+    for pr in response.json():
+        if not pr["merged_at"]:
+            continue
+        if since and pr["merged_at"] <= since:
+            break
+
+        prs.append(
+            TEMPLATE.format(title=pr["title"], number=pr["number"], url=pr["html_url"])
+        )
+
+    return prs
+
+
+def main():
+    try:
+        url_path = REPOSITORY.rstrip("/").split("github.com/")[1]
+        owner, repo = url_path.split("/")[-2:]
+    except (ValueError, IndexError):
+        print("Error: Invalid GitHub URL", file=sys.stderr)
+        sys.exit(1)
+
+    try:
+        notes = get_prs_since_last_release(owner, repo)
+        print("\n".join(notes))
+    except requests.exceptions.HTTPError as e:
+        print(f"Error: {e.response.json().get('message', str(e))}", file=sys.stderr)
+        sys.exit(1)
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()