Init

backend/.gitignore

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+.venv
+**/__pycache__

backend/backend/__init__.py

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+from fastapi import FastAPI, Request, WebSocket, WebSocketDisconnect
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+
+app = FastAPI()
+
+backend = FastAPI()
+
+
+@backend.websocket("/client")
+async def client_handler(socket: WebSocket):
+    print("WS opened")
+    await socket.accept()
+
+    while True:
+        try:
+            data = await socket.receive_json()
+            print(f"WS data: {data!r}")
+        except WebSocketDisconnect:
+            break
+
+    print("WS closed")
+
+
+frontend = FastAPI()
+
+
+@frontend.middleware("http")
+async def index_catch_all(request: Request, call_next):
+    response = await call_next(request)
+
+    if response.status_code == 404:
+        return FileResponse("frontend/index.html")
+
+    return response
+
+
+frontend.mount("/", StaticFiles(directory="frontend"))
+
+app.mount("/api/", backend)
+app.mount("/", frontend)

backend/frontend

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+../frontend/build

backend/pyproject.toml

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+[tool.poetry]
+name = "backend"
+version = "0.1.0"
+description = ""
+authors = ["Kai Vogelgesang <kai@leafbla.de>"]
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = "^3.10"
+pyautogui = "^0.9.53"
+fastapi = "^0.85.1"
+hypercorn = "^0.14.3"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"