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#!/bin/bash
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# Display a QR code for the string in qr.txt
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echo
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echo "Please wait. Generating QR-code..."
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echo
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# make sure qrcode-encode and fbi are installed
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sudo apt-get install qrencode fbi -y > /dev/null
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qrencode -l L -o /home/admin/qr.png < /home/admin/qr.txt > /dev/null
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sudo fbi -a -T 1 -d /dev/fb1 --noverbose /home/admin/qr.png 2> /dev/null
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echo "************************************"
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echo "Scan the QR-Code on the LCD-Display."
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echo "************************************"
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echo
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echo "If you don't have access to the LCD, you can view it here."
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echo "Make the this terminal window as big as possible - fullscreen would be best."
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echo "Then PRESS ENTER here in the terminal to show QR code."
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read key
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clear
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qrencode -t ANSI256 < /home/admin/qr.txt
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shred /home/admin/qr.txt
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rm -f /home/admin/qr.txt
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echo "(To shrink QR code: macOS press CMD- / LINUX press CTRL-) Press ENTER when finished."
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read key
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clear
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# remove the QR picture on the raspi LCD
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sudo killall -3 fbi
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shred /home/admin/qr.png
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rm -f /home/admin/qr.png
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