using bash to make an automated script for google drive

Question

I am trying to make an automated app using Mac Automator, so that when user add his input, that value would then create a symbolic link from the user input to another directory, then it would take the value of that symbolic link to add it to Mac Finder sidebar favorites using mysides . I have done the symbolic link and the adding to sidebar favorites, but I can't seem to be able to finish the code, I hope someone is able to understand me.

#!/bin/bash

for f in "$@"
do
    
    ln -s "$f" "/Users/Default/Documents/GoogleSync"
    basename "$f"
    s=$(basename -- "$f")
    /usr/local/bin/mysides add "$s" "file://$(echo $f | sed 's/ /%20/g')"
done