feat: implement Stats endpoints for web dashboard

decnet/web/api.py

@@ -123,3 +123,14 @@ async def get_logs(
         "offset": offset,
         "data": logs
     }
+
+
+class StatsResponse(BaseModel):
+    total_logs: int
+    unique_attackers: int
+    active_deckies: int
+
+
+@app.get("/api/v1/stats", response_model=StatsResponse)
+async def get_stats(current_user: str = Depends(get_current_user)) -> dict[str, Any]:
+    return await repo.get_stats_summary()

decnet/web/sqlite_repository.py

@@ -95,9 +95,14 @@ class SQLiteRepository(BaseRepository):
                 row = await cursor.fetchone()
                 unique_attackers: int = row["unique_attackers"] if row else 0
 
+            async with db.execute("SELECT COUNT(DISTINCT decky) as active_deckies FROM logs") as cursor:
+                row = await cursor.fetchone()
+                active_deckies: int = row["active_deckies"] if row else 0
+
             return {
                 "total_logs": total_logs,
-                "unique_attackers": unique_attackers
+                "unique_attackers": unique_attackers,
+                "active_deckies": active_deckies
             }
 
     async def get_user_by_username(self, username: str) -> Optional[dict[str, Any]]:

tests/test_web_api.py

@@ -72,3 +72,26 @@ def test_get_logs_success() -> None:
         assert "data" in data
         assert data["total"] >= 0
         assert isinstance(data["data"], list)
+
+def test_get_stats_unauthorized() -> None:
+    with TestClient(app) as client:
+        response = client.get("/api/v1/stats")
+        assert response.status_code == 401
+
+def test_get_stats_success() -> None:
+    with TestClient(app) as client:
+        login_response = client.post(
+            "/api/v1/auth/login",
+            json={"username": "admin", "password": "admin"}
+        )
+        token = login_response.json()["access_token"]
+        
+        response = client.get(
+            "/api/v1/stats",
+            headers={"Authorization": f"Bearer {token}"}
+        )
+        assert response.status_code == 200
+        data = response.json()
+        assert "total_logs" in data
+        assert "unique_attackers" in data
+        assert "active_deckies" in data