happy birthday cake

#!/bin/bash

function happy_birthday(){
    echo get cake
    echo light candles
    echo open gifts
    i=0
    #while cake_count > i
    #output=''
    for i in {1..4}
    do
        output=$output" Happy Birthday"
        if [ $i -eq 3 ]
        then
            output=$output" Dear Aaron"
        else
            output=$output" To You"
            echo -e $output
            output=''
        fi

    done
}
if [ "`date +\"%d %b\"`" = '22 Oct' ]
then
    happy_birthday
    echo "Happy Birthday Aaron!"
else
    y=$(date --date '22 Oct' +%j)
    x=$(date +%j)
    ((z=${y}-${x}))

    echo "${z} days until Aaron's next birthday!"
fi