Update app.py

app.py

@@ -11,39 +11,24 @@ class PaperManager:
         self.papers = []
         self.total_pages = 1
 
-    def calculate_score(self, paper):
-        upvotes = paper.get('paper', {}).get('upvotes', 0)
-        comments = paper.get('numComments', 0)
-        published_at_str = paper.get('publishedAt', datetime.now(timezone.utc).isoformat())
-
-        try:
-            published_time = datetime.fromisoformat(
-                published_at_str.replace('Z', '+00:00')
-            )
-        except ValueError:
-            # Handle incorrect date format
-            published_time = datetime.now(timezone.utc)
-
-        age_days = (datetime.now(timezone.utc) - published_time).total_seconds() / 86400  # Convert seconds to days
-        age_days = max(age_days, 0)  # Prevent negative ages
-
-        # Calculate score using a logarithmic scale to balance upvotes and comments
-        score = (upvotes + comments) / ((age_days + 2) ** 1.5)
-        return score
-
     def fetch_papers(self):
         try:
             response = requests.get(f"{API_URL}?limit=50")
             response.raise_for_status()
             data = response.json()
-
-            # Calculate score for each paper
-            for paper in data:
-                paper['score'] = self.calculate_score(paper)
-
-            # Sort papers by score in descending order
-            self.papers = sorted(data, key=lambda x: x['score'], reverse=True)
-
+            
+            # Sort papers primarily by 'publishedAt' descending, then by 'upvotes' descending
+            self.papers = sorted(
+                data,
+                key=lambda x: (
+                    datetime.fromisoformat(
+                        x.get('publishedAt', datetime.now(timezone.utc).isoformat()).replace('Z', '+00:00')
+                    ),
+                    x.get('paper', {}).get('upvotes', 0)
+                ),
+                reverse=True  # Ensures descending order
+            )
+            
             self.total_pages = (len(self.papers) + self.papers_per_page - 1) // self.papers_per_page
             self.current_page = 1
             return True