#!/bin/bash

check_dependancies()
{
    if [ $# -eq 0 ] ; then
        if [[ $(bash --version | head -n 1 | cut -f 1 -d "." | tr -d "[:alpha:]") < "4" ]] ; then
            echo "This game requires bash version 4 or higher. Earlier versions may not be able to successfully run this code."
        fi
        if ! hash sox &> /dev/null ; then
            echo "The program sox is required but does not appear to be installed on your system. Please install sox and try again."
            exit 1
        fi
    fi
    for i in $@ ; do
        if ! hash $i &> /dev/null ; then
            echo "The program $i is required but does not appear to be installed on your system. Please install $i and try again."
            exit 1
        fi
    done
}

initializer()
{
    tries=0
    numberString="$(shuf -e 1 2 3 4 5 6 7 8 9 | tr -d "[:space:]")"
}

check_dependancies
initializer
while [ $numberString -ne 123456789 ] ; do
    read -n 1 -p "$numberString " number
    if [ "$number" == "Q" ] ; then
        echo
        exit 0
    fi
    if ! [[ "$number" =~ ^[0-9]+$ ]] ; then
        unset number
    fi
    if [ "$number" == "0" ] ; then
        unset number
    fi
    echo
    if [ "$number" != "" ] ; then
        i=0
        while [ ${numberString:$i:1} -ne $number ] ; do
            let i++
        done
        newNumberString=$(echo ${numberString:$i:9} | rev)
        numberString=${numberString:0:$i}$newNumberString
        let tries++
        play -nqV0 synth .05 tri C2:C7 norm -7
    else
        play -qV0 "|sox -n -p synth saw E2 fade 0 0.25 0.05" "|sox -n -p synth saw E2 fade 0 0.25 0.05" norm -7
    fi
done
if [ -f ".numnastics-score" ] ; then
    oldHighScore=$(cat .numnastics-score | tr -d "[:alpha:][:cntrl:][:punct:][:space:]")
else
    oldHighScore=0
fi
echo "Congratulations! You win with $tries moves."
if [ $oldHighScore -ne 0 ] ; then
    echo " The record is $oldHighScore."
fi
if [ $tries -lt $oldHighScore -o $oldHighScore -eq 0 ] ; then
    echo "$tries" > .numnastics-score
    read -n 1 -p "You have set a new record! Would you like to post this score to Twitter using TTYtter? " answer
    if [ "${answer^}" == "Y" ] ; then
        check_dependancies ttytter
        ttytter -readline=0 -silent -status="I just beat #numnastics in $tries moves! $(if [ $oldHighScore -ne 0 ] ; then echo "This is $(($oldHighScore - $tries)) fewer moves than my previous record!";fi)" &> /dev/null &
    fi
fi
play -qV0 sounds/win.ogg
echo
exit 0