Create app.py

app.py

@@ -0,0 +1,45 @@
+import os
+import json
+from fastapi import FastAPI
+from fastapi.staticfiles import StaticFiles
+
+# --- Part 1: Automatic File List Generation ---
+# This code runs ONLY ONCE when the application starts up.
+
+DATA_DIR = "data"
+OUTPUT_FILE = "filelist.json"
+
+def generate_file_list():
+    """
+    Scans the data directory for .html files and saves the list to a JSON file.
+    This function is the "automatic" part.
+    """
+    print("--- Running automatic file scan ---")
+    if not os.path.exists(DATA_DIR):
+        print(f"Warning: The '{DATA_DIR}' directory was not found. Creating an empty list.")
+        filenames = []
+    else:
+        filenames = [f for f in os.listdir(DATA_DIR) if f.endswith(".html")]
+    
+    with open(OUTPUT_FILE, 'w') as f:
+        json.dump(filenames, f)
+        
+    print(f"Successfully created '{OUTPUT_FILE}' with {len(filenames)} files.")
+
+# *** Run the function now to generate the file list ***
+generate_file_list()
+
+# --- Part 2: The Web Server ---
+# This part serves your files to the user.
+
+app = FastAPI()
+
+# This is the magic command. It tells FastAPI to serve all files
+# from the current directory ('.'). The 'html=True' part automatically
+# makes it serve index.html as the main page.
+app.mount("/", StaticFiles(directory=".", html=True), name="static")
+
+# When Hugging Face runs this app.py, it needs to know how to start the server.
+# The 'app:app' string points to the FastAPI instance named 'app' in the file 'app.py'.
+# You don't need to run this command yourself; Hugging Face does it for you.
+# To run locally, you would use: uvicorn app:app --reload