Fix: Serve frontend and API from same FastAPI server on port 7860

backend/app/main.py

@@ -1,6 +1,9 @@
 """FastAPI application entry point."""
+from pathlib import Path
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
 import uvicorn
 
 from .api.routes import router
@@ -21,26 +24,49 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# Include routes
+# Include API routes
 app.include_router(router)
 
+# Serve static frontend files
+static_dir = Path("/app/frontend/dist")
+if static_dir.exists():
+    # Mount assets directory
+    app.mount("/assets", StaticFiles(directory=str(static_dir / "assets")), name="assets")
 
-@app.get("/")
-async def root():
-    """Root endpoint."""
-    return {
-        "name": "Package Delivery Search API",
-        "version": "1.0.0",
-        "endpoints": {
-            "health": "/api/health",
-            "algorithms": "/api/algorithms",
-            "generate": "/api/grid/generate",
-            "path": "/api/search/path",
-            "plan": "/api/search/plan",
-            "compare": "/api/search/compare",
-            "visualize": "ws://localhost:8000/ws/visualize"
+    # Serve index.html for root and all non-API routes
+    @app.get("/")
+    async def serve_root():
+        return FileResponse(str(static_dir / "index.html"))
+
+    @app.get("/{full_path:path}")
+    async def serve_frontend(full_path: str):
+        # Don't intercept API routes
+        if full_path.startswith("api/"):
+            return {"error": "API endpoint not found"}
+
+        # Try to serve the requested file
+        file_path = static_dir / full_path
+        if file_path.is_file():
+            return FileResponse(str(file_path))
+
+        # Otherwise serve index.html (SPA routing)
+        return FileResponse(str(static_dir / "index.html"))
+else:
+    @app.get("/")
+    async def root():
+        """Root endpoint."""
+        return {
+            "name": "Package Delivery Search API",
+            "version": "1.0.0",
+            "endpoints": {
+                "health": "/api/health",
+                "algorithms": "/api/algorithms",
+                "generate": "/api/grid/generate",
+                "path": "/api/search/path",
+                "plan": "/api/search/plan",
+                "compare": "/api/search/compare",
+            }
         }
-    }
 
 
 if __name__ == "__main__":

start.sh

@@ -1,9 +1,5 @@
 #!/bin/bash
 
-# Start backend in background
+# Run FastAPI backend on port 7860 - serves both API and frontend
 cd /app/backend
-python3 -m uvicorn app.main:app --host 0.0.0.0 --port 8000 &
-
-# Serve frontend built files using Python's HTTP server on port 7860
-cd /app/frontend/dist
-python3 -m http.server 7860
+python3 -m uvicorn app.main:app --host 0.0.0.0 --port 7860