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from functools import wraps
from flask import make_response
from flask import request
from flask import Response
from newspipe.lib.utils import to_hash
def etag_match(func):
@wraps(func)
def wrapper(*args, **kwargs):
response = func(*args, **kwargs)
if isinstance(response, Response):
etag = to_hash(response.data)
headers = response.headers
elif type(response) is str:
etag = to_hash(response)
headers = {}
else:
return response
if request.headers.get("if-none-match") == etag:
response = Response(status=304)
response.headers["Cache-Control"] = headers.get(
"Cache-Control", "pragma: no-cache"
)
elif not isinstance(response, Response):
response = make_response(response)
response.headers["etag"] = etag
return response
return wrapper
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