Update src/streamlit_app.py

src/streamlit_app.py

@@ -18,8 +18,6 @@ import io
 import base64
 import chess.pgn
 import random
-import tempfile
-import shutil
 from huggingface_hub import hf_hub_download
 
 # Hugging Face model config
@@ -70,21 +68,22 @@ def parse_move_input(move_input, board):
 
     # Try UCI
     try:
-        move = chess.Move.from_uci(move_input.lower())
-        if move in board.legal_moves:
-            return move
-    except Exception as e:
-        st.info(f"UCI parsing failed: {e}")
+        if len(move_input) in (4, 5):
+            move = chess.Move.from_uci(move_input.lower())
+            if move in board.legal_moves:
+                return move
+    except:
+        pass
 
     # Try SAN
     try:
         move = board.parse_san(move_input)
         if move in board.legal_moves:
             return move
-    except Exception as e:
-        st.info(f"SAN parsing failed: {e}")
+    except:
+        pass
 
-    # Try castling aliases
+    # Castling aliases
     castling_variations = {
         '0-0': 'O-O', '0-0-0': 'O-O-O',
         'oo': 'O-O', 'ooo': 'O-O-O',
@@ -96,8 +95,8 @@ def parse_move_input(move_input, board):
             move = board.parse_san(normalized)
             if move in board.legal_moves:
                 return move
-        except Exception as e:
-            st.info(f"Castling parsing failed: {e}")
+        except:
+            pass
 
     return None
 
@@ -189,7 +188,7 @@ if not board.is_game_over() and board.turn == chess.WHITE:
             render_pgn()
             st.rerun()
         else:
-            st.warning("Invalid move. Try again using SAN (e.g., `e4`, `Nf3`, `O-O`) or UCI (e.g., `e2e4`).")
+            st.warning("Invalid move. Use standard algebraic notation (e.g., `e4`, `Nf3`, `O-O`) or UCI (e.g., `e2e4`).")
     if st.button("Random Move"):
         move = random.choice(legal_moves)
         board.push(move)
@@ -207,9 +206,10 @@ if not board.is_game_over() and board.turn == chess.BLACK:
             else:
                 move = random.choice(list(board.legal_moves))
             if move:
+                san_move = board.san(move)  # FIX: Get SAN before pushing
                 board.push(move)
                 history.append(move.uci())
-                st.success(f"o2 played: {board.san(move)}")
+                st.success(f"o2 played: {san_move}")
                 st.rerun()
         except Exception as e:
             st.error(f"AI error: {e}")