Bash script to unsign Microsoft Teams in macOS to be able to use external cameras for video input

unsign-teams.sh

#!/bin/bash

###
# Microsoft Teams stopped recognizing external cameras for video input in macOS
# after version 1.3.00.18164.
# User greghiggins3 in Microsoft's forum posted a solution.
# The solution involves unsigning Microsoft Teams.
# This Bash script automates the unsigning in macOS 
# for Teams version 1.3.00.28778

# https://answers.microsoft.com/en-us/msteams/forum/msteams_tfb-msteams_tfmac/microsoft-teams-mac-os-client-is-not-recognizing/d9e863be-d9a4-4d03-a4b8-1b5c7df58828
###

# Emojis used in output
check='\xE2\x9C\x85'
x='\xE2\x9D\x8C'
smiley_face='\xF0\x9F\x98\x84'

teams_apps[0]='/Applications/Microsoft\ Teams.app'
teams_apps[1]='/Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper.app'
teams_apps[2]='/Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper\ \(GPU\).app'
teams_apps[3]='/Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper\ \(Plugin\).app'
teams_apps[4]='/Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper\ \(Renderer\).app'

unsign(){
    $(eval "codesign --remove-signature $1")
}

success(){
    printf "$check - Step $1/$2"
    [ $1 -eq $2 ] && printf "\n" || printf "\r"
}

fail(){
    printf "$x - Step $1/$2\n"
    exit
}

[ $EUID -ne 0 ] && echo "Please run as root (sudo ./unsign-teams.sh)..." && exit 1

echo "-- Unsigning Microsoft Teams --"

num_teams_apps=${#teams_apps[@]}
((num_teams_apps--))

for ((i = 0; i <= $num_teams_apps; i++)); do
    printf "[Unsigning]: " && printf "${teams_apps[$i]}\n"
    unsign "${teams_apps[$i]}" && success $i $num_teams_apps || fail $i $num_teams_apps
done

printf "Now you can use external video inputs for Microsoft Teams " && printf "$smiley_face\n"