Restore multi-year trending PoCs with 4-day filter

.github/getTrending.py

@@ -1,9 +1,11 @@
 #!/usr/bin/env python3
-"""Regenerate the Trending PoCs table in README.md.
+"""Regenerate the Trending PoCs tables in README.md.
 
-- Only consider repositories whose names contain the current year's CVE pattern (e.g., CVE-2025-1234).
+- Consider the latest 4 years (current year and previous 3).
+- Require repository name to contain a CVE for that year (e.g., CVE-2025-1234).
+- Require a non-empty description (we only want actual PoCs, not empty shells).
 - Restrict to repositories updated in the last 4 days.
-- Sort by most recently updated, then stars, and emit up to 20 rows.
+- Sort by most recently updated, then stars, and emit up to 20 rows per year.
 """
 
 from __future__ import annotations
@@ -18,6 +20,7 @@ import requests
 
 WINDOW_DAYS = 4
 MAX_ROWS = 20
+YEARS_BACK = 4
 
 
 class Repo(TypedDict):
@@ -50,8 +53,8 @@ def time_ago(updated_at: str, now: datetime) -> str:
     return "just now"
 
 
-def fetch_trending(current_year: int, cutoff: datetime) -> List[Repo]:
-    query = f"CVE-{current_year} in:name stars:>2 pushed:>={cutoff.date().isoformat()} archived:false"
+def fetch_trending(year: int, cutoff: datetime) -> List[Repo]:
+    query = f"CVE-{year} in:name stars:>2 pushed:>={cutoff.date().isoformat()} archived:false"
     url = "https://api.github.com/search/repositories"
     params = {
         "q": query,
@@ -63,12 +66,13 @@ def fetch_trending(current_year: int, cutoff: datetime) -> List[Repo]:
     resp = requests.get(url, params=params, headers=github_headers(), timeout=30)
     resp.raise_for_status()
     items: Iterable[Repo] = resp.json().get("items", [])
-    pattern = re.compile(rf"cve-{current_year}-\d+", re.IGNORECASE)
+    pattern = re.compile(rf"cve-{year}-\d+", re.IGNORECASE)
     filtered: List[Repo] = []
     for item in items:
         name = item.get("name", "")
         updated_at = item.get("updated_at")
-        if not updated_at or not pattern.search(name or ""):
+        description = (item.get("description") or "").strip()
+        if not updated_at or not pattern.search(name or "") or not description:
             continue
         updated_dt = datetime.strptime(updated_at, "%Y-%m-%dT%H:%M:%SZ").replace(tzinfo=timezone.utc)
         if updated_dt < cutoff:
@@ -94,20 +98,21 @@ def main() -> None:
     cutoff = datetime.now(timezone.utc) - timedelta(days=WINDOW_DAYS)
     now = datetime.now(timezone.utc)
 
-    repos = fetch_trending(current_year, cutoff)
-
     output: List[str] = ['<h1 align="center">Recently updated Proof-of-Concepts</h1>']
-    output.append(f"\n\n## {current_year}\n")
-    output.append(f"### Updated in the last {WINDOW_DAYS} days (up to {MAX_ROWS} repos)\n")
-    output.append("| Stars | Updated | Name | Description |")
-    output.append("| --- | --- | --- | --- |")
-    if repos:
-        output.extend(build_rows(repos, now))
-    else:
-        output.append("| 0⭐ | — | No recent CVE PoCs | No repositories matched the filters. |")
+
+    for year in range(current_year, current_year - YEARS_BACK, -1):
+        repos = fetch_trending(year, cutoff)
+        output.append(f"\n\n## {year}\n")
+        output.append(f"### Updated in the last {WINDOW_DAYS} days (up to {MAX_ROWS} repos)\n")
+        output.append("| Stars | Updated | Name | Description |")
+        output.append("| --- | --- | --- | --- |")
+        if repos:
+            output.extend(build_rows(repos, now))
+        else:
+            output.append("| 0⭐ | — | No recent CVE PoCs | No repositories matched the filters. |")
 
     Path("README.md").write_text("\n".join(output), encoding="utf-8")
-    print(f"Wrote {len(repos)} rows for {current_year}")
+    print(f"Wrote tables for {YEARS_BACK} years ending {current_year}")
 
 
 if __name__ == "__main__":