From the Front Early Bird Detector

ftf.sh

#!/bin/sh

# set last 2 digits of the current year
year=16


# set terminal title
echo "\033]0;FTF Early Bird Checker\007";


# try to guess the ticket platform
declare -a FTFGuessPlatform=(
    "https://getinvited.to/fromthefront/"
    "https://ti.to/fromthefront/"
)

# try to guess the slug
declare -a FTFGuessSlug=(
    "from-the-front-20$year/"
    "fromthefront-20$year/"
    "fromthefront20$year/"
    "from-the-front-$year/"
    "fromthefront-$year/"
    "fromthefront$year/"
    "ftf-20$year/"
    "ftf-$year/"
    "ftf20$year/"
    "ftf$year/"
    "ftf/"
    "20$year/"
    "$year/"
)


# initialize seconds and wait (don't modify)
seconds=-1
wait=1


while [ true ]
do
    # increase seconds
    ((seconds++))

    # clear output on terminal
    printf '\r                                                                                 '

    if [ $((seconds%wait)) -eq 0 ]; then

        # set a random delay to emulate real requests
        wait=$(jot -r 1 180 250)

        printf '\rChecking Early Bird\n'
        guess="`date +%Y-%m-%d`  `date +%H:%M:%S`"
        guess="\n$guess\n+----------------------------------------------------------------+"

        for p in "${FTFGuessPlatform[@]}"
        do

            for u in "${FTFGuessSlug[@]}"
            do

               s=$(curl -o /dev/null --silent --head --write-out '%{http_code}\n' $p$u)
               if [[ $s -eq 301 || $s -eq 302 || $s -eq 304 || $s -eq 200 ]]; then

                   echo "+------------------------------------------------------"
                   echo "| FTF$year Early Bird!"
                   echo "| $p$u"
                   echo "+------------------------------------------------------"

                   # show notification
                   osascript -e 'display notification "Avalaible now!" with title "FTF'$year' Early Bird!"'
                   # show window dialog
                   osascript -e 'tell app "Finder" to display dialog "FTF'$year' Early Bird!\n\nTickets available on '$p$u'"'

                   # Well done.
                   exit 1
               fi

               if [[ $s -eq 0 || $s -eq 404 ]]; then
                   guess="$guess \n[$s] - $p$u"
               fi

            done
        done

        guess="$guess \n\n"
        echo $guess

    fi

    # show remaining time before next check
    dots=$( printf "%$(($seconds % 10))s" );
    printf '\r%s %d %s' "Check for early bird in" "$(($wait - $seconds % $wait))" "seconds${dots// /.}"

    # a one-second delay
    sleep 1
done