#!/bin/bash

if ! [[ "$1" =~ xt=urn:btih:([^&/]+) ]]; then
    echo "Invalid magnet link"
    exit 1
fi

filename="$(echo "$1" | sed -e 's/.*dn=//' -e 's/&.*//').torrent"
echo "d10:magnet-uri${#1}:${1}e" > "$filename"
chmod 0644 "$filename"

echo "created $filename"