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from fastapi import FastAPI, Request, Response
filenames = ["js/sketch.js"]
contents = '\n'.join([f"<script type='text/javascript' src='{x}'></script>" for x in filenames])
app = FastAPI()
@app.middleware("http")
async def insert_js(request: Request, call_next):
path = request.scope['path'] # get the request route
response = await call_next(request)
if path == "/":
response_body = ""
async for chunk in response.body_iterator:
response_body += chunk.decode()
some_javascript = """
<script type="text/javascript">
src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.6.0/p5.js">
</script>
<script src="sketch.js"></script>
"""
response_body = response_body.replace("</headers>", some_javascript + "</headers>")
response_body = response_body.replace("</body>", contents + "</body>")
del response.headers["content-length"]
return Response(
content=response_body,
status_code=response.status_code,
headers=dict(response.headers),
media_type=response.media_type
)
return response |