Study claims Jama Masjid in Ahmedabad was Bhadra Kali Temple

A report published on claimed that Jama Masjid in Ahmedabad was Bhadra Kali Temple. Jama Masjid was built during 1424 CE in Ahmedabad (originally Karnavati) in Gujarat by Ahmed Shah I is originally the Hindu temple of Goddess Bhadrakali, report said.
Jama Masjid _1  
Wouldn’t the pillars cause obstruction while offering Namaz?
The report raised doubt on the number of pilers inside the masjid. It said that If this was originally supposed to be a mosque built with a large hall for mass prayers, then what would be the purpose of having so many pillars in between? Most of the pillars are carved in typical Hindu temple style, the report claimed.
Jama Masjid Ahmedabad_1 
Many Hindu temple pillars are usually carved with stories
It further said that filigree carvings of flower and Paisley motifs, lotus flowers and creepers, mandalas, elephants, coiled serpents representing the kundalini, celestial dancers and bells are found carved on the 100 odd surviving pillars that line the temple complex.
Jama Mosque was Hindu tem 
Jama Mosque is situated outside distorted Bhadra Fort
The report said that Jama Mosque is situated outside destorted Bhadra Fort area, along the south side of the road extending from Teen Darwaza to Manek Chowk. Ahmedabad was named after Ahmad Shah I of the Muzaffarid dynasty who captured Karnavati in 1411. He established Ahmedabad as the new capital of Gujarat Sultanate and built Bhadra Fort on the east bank of the Sabarmati River.
Jama Masjid was Bhadrakal 
Islam prohibits idol worship, then how the filigree carvings of idols exist on pillars
The report remarked that Islam strictly prohibits idol worship and it is forbidden and punishable under Sharia law to worship or give a physical representation or the form of an idol, figure, figurine, animal, etc to God. So then, how do these elaborate filigree carvings exist on the pillars and ceilings of this construction?
Islam and Idol worship_1 
Central domes are carved like Lotus flowers
The report noted that in its Indo-Saracenic architecture, the mosque contains many syncretic elements that are not necessarily obvious to the viewer. Some of the central domes are carved like Lotus flowers, closely related to the typical domes of Jain temples, and some of the pillars are carved with the form of a bell hanging on a chain, in reference to the bells that often hang in Hindu temples.
Temple vandalized_1