Update app.py

app.py

@@ -54,8 +54,60 @@ COLOR_MAP = {
 class TyphoonAnalyzer:
     def __init__(self):
         self.last_oni_update = None
+        self.ensure_data_files_exist()
         self.load_initial_data()
         
+    def ensure_data_files_exist(self):
+        """Ensure all required data files exist before loading"""
+        print("Checking and downloading required data files...")
+        
+        # Create data directory if it doesn't exist
+        os.makedirs(DATA_PATH, exist_ok=True)
+        
+        # Download ONI data if it doesn't exist
+        if not os.path.exists(ONI_DATA_PATH):
+            print("Downloading ONI data...")
+            url = "https://www.cpc.ncep.noaa.gov/data/indices/oni.ascii.txt"
+            temp_file = os.path.join(DATA_PATH, "temp_oni.ascii.txt")
+            try:
+                response = requests.get(url)
+                response.raise_for_status()
+                with open(temp_file, 'wb') as f:
+                    f.write(response.content)
+                self.convert_oni_ascii_to_csv(temp_file, ONI_DATA_PATH)
+                print("ONI data downloaded and converted successfully")
+            except Exception as e:
+                print(f"Error downloading ONI data: {e}")
+                raise
+            finally:
+                if os.path.exists(temp_file):
+                    os.remove(temp_file)
+
+        # Download IBTrACS data if it doesn't exist
+        if not os.path.exists(LOCAL_iBtrace_PATH):
+            print("Downloading IBTrACS data...")
+            try:
+                response = requests.get(iBtrace_uri)
+                response.raise_for_status()
+                with open(LOCAL_iBtrace_PATH, 'w') as f:
+                    f.write(response.text)
+                print("IBTrACS data downloaded successfully")
+            except Exception as e:
+                print(f"Error downloading IBTrACS data: {e}")
+                raise
+
+        # Create processed typhoon data if it doesn't exist
+        if not os.path.exists(TYPHOON_DATA_PATH):
+            print("Processing typhoon data...")
+            try:
+                self.convert_typhoondata(LOCAL_iBtrace_PATH, TYPHOON_DATA_PATH)
+                print("Typhoon data processed successfully")
+            except Exception as e:
+                print(f"Error processing typhoon data: {e}")
+                raise
+
+        print("All required data files are ready")
+        
     def load_initial_data(self):
         print("Loading initial data...")
         self.update_oni_data()