Weekly Options Expiry Candle

This script shows weekly expiry candle on daily chart. In weekly expiry, week starts on Friday and end on next Thursday.
How the candle is constructed:
Open= Open price of Friday, if Friday is a holiday, next available open price
High= Highest high price of Friday, Monday, Tuesday, Wednesday, Thursday
Low= Lowest low price of Friday, Monday, Tuesday, Wednesday, Thursday
Close=Close price of Thursday, if Thursday is a holiday, previously available close price
I am very new to Pine script, so waiting for your comments and review.

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