fix: EIX scraping, LS endpoints, and premium Dashboard analytics

dashboard/server.py

@@ -59,7 +59,7 @@ async def get_summary():
     query = """
     select m.continent, m.country, count(*) as trade_count, sum(t.price * t.quantity) as total_volume
     from trades t
-    join metadata m on t.isin = m.isin
+    left join metadata m on t.isin = m.isin
     group by m.continent, m.country
     """
     try:
@@ -70,6 +70,24 @@ async def get_summary():
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
+@app.get("/api/comparison")
+async def get_comparison(days: int = 7):
+    # Aggregated volume per exchange per day
+    query = f"""
+    select exchange, date_trunc('day', timestamp) as day, sum(price * quantity) as daily_volume, count(*) as trade_count
+    from trades 
+    where timestamp > dateadd('d', -{days}, now())
+    group by exchange, day
+    order by day asc
+    """
+    try:
+        response = requests.get(f"http://{DB_HOST}:9000/exec", params={'query': query}, auth=DB_AUTH)
+        if response.status_code == 200:
+            return response.json()
+        throw_http_error(response)
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
 def throw_http_error(res):
     raise HTTPException(status_code=res.status_code, detail=f"QuestDB error: {res.text}")