#!/bin/bash -e

BASE_URL="https://talky.io"

base64enc() {
    if [[ -x $(which shasum) ]] ; then
        retval=$(echo $1 | shasum | sed 's/ .*//g')
    elif [[ -x $(which openssl) ]] ; then
        retval=$(echo $1 | openssl enc -base64 | sed 's/\//x/g' | sed 's/+/x/g' | sed 's/=/x/g')
    elif [[ -x $(which base64) ]] ; then
        retval=$(echo $1 | base64 | sed 's/\//x/g' | sed 's/+/x/g' | sed 's/=/x/g')
    else
        echo "Unable to base64 encode, install base64?"
        exit
    fi
    echo $retval
}

getroom() {
if [[ -z "$1" ]]; then
    if [[ ! -a /dev/urandom ]] ; then
        echo "No urandom! Can not make random room name."
        exit
    elif [[ ! -x $(which dd) ]] ; then
        echo "No `dd` utility, can not read random file."
        exit
    else
        ROOM_RAND=$(dd if=/dev/urandom bs=1 count=32 2>/dev/null)
        ROOM_NAME=$( base64enc ${ROOM_RAND} )
    fi
else
    ROOM_NAME=$1
fi
}

getroom

echo "${BASE_URL}/${ROOM_NAME}"