Refactor Go binary execution in lineup generator to dynamically determine binary path and improve error handling.

src/streamlit_app.py

@@ -147,23 +147,24 @@ def run_go_classic_lineup_generator(site="DK", sport="NHL"):
         st.write(f"Starting Go {sport} lineup generation...")
         start_time = time.time()
         
-        # Run the Go executable
+        # Determine the path to the Go binary (from /app directory)
+        app_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))  # Get /app from /app/src
+        
         if site == "DK":
-            result = subprocess.run(
-                ["./dk_nhl_go/NHL_seed_frames", site, sport],  # Linux binary
-                capture_output=True,
-                text=True,
-                check=True,
-                cwd=".."  # Run from /app directory
-            )
+            go_binary = os.path.join(app_dir, "dk_nhl_go", "NHL_seed_frames")
         else:
-            result = subprocess.run(
-                ["./fd_nhl_go/NHL_seed_frames", site, sport],  # Linux binary
-                capture_output=True,
-                text=True,
-                check=True,
-                cwd=".."  # Run from /app directory
-            )
+            go_binary = os.path.join(app_dir, "fd_nhl_go", "NHL_seed_frames")
+        
+        st.write(f"Looking for binary at: {go_binary}")
+        
+        # Run the Go executable
+        result = subprocess.run(
+            [go_binary, site, sport],
+            capture_output=True,
+            text=True,
+            check=True,
+            cwd=app_dir  # Run from /app directory
+        )
         
         end_time = time.time()
         st.write(f"Go {sport} processing completed in {end_time - start_time:.2f} seconds")
@@ -182,8 +183,14 @@ def run_go_classic_lineup_generator(site="DK", sport="NHL"):
         if e.stderr:
             st.write("Error output:", e.stderr)
         return False
-    except FileNotFoundError:
-        st.write("Error: NHL_seed_frames.exe not found. Make sure it's compiled and in the current directory.")
+    except FileNotFoundError as e:
+        st.write(f"Error: Go binary not found at {go_binary}")
+        st.write(f"FileNotFoundError: {e}")
+        st.write(f"Current working directory: {os.getcwd()}")
+        st.write(f"App directory: {app_dir}")
+        return False
+    except Exception as e:
+        st.write(f"Unexpected error: {e}")
         return False
 
 def init_team_results(model_source: DataFrame, position_reqs: dict, salary_cap: int, max_skaters: int, teams_to_optimize: list, combos: int):