#!/bin/bash -e
#-e Causes bash script to exit if any of the installers
#return with a non-zero return value.

if [[ $EUID -ne 0 ]]; then
    echo "Please run as root user."
    exit 1
fi

showhelp () {
    echo "Usage: airtime-install [options]
-h, --help                         Displays usage information.
-w, --web-user=WEB_USER            Set the default apache web user.
-a, --apache                       Installs apache and deploys a basic configuration for Airtime."
    exit 0
}

web_user="www-data"
apache="f"

while :; do
    case "$1" in
        -h|-\?|--help)
            showhelp
            exit
            ;;
        -a|--apache)
            apache="t"
            ;;
        -w|--web-user)
            if [ "$2" ]; then
                web_user=$2
                shift 2
                continue
            else
                echo 'ERROR: Must specify a non-empty "--web-user WEB_USER" argument.' >&2
                exit 1
            fi
            ;;
        --web-user=?*)
            web_user=${1#*=} # Delete everything up to "=" and assign the remainder.
            ;;
        --web-user=)
            echo 'ERROR: Must specify a non-empty "--web-user WEB_USER" argument.' >&2
            exit 1
            ;;
        --)
            shift
            break
            ;;
        -?*)
            echo "$0: error - unrecognized option $1" 1>&2;
            ;;
        *)
            break
    esac
    shift
done

dist=`lsb_release -is`

echo -e "\n                 ****************************************************************"
echo    "                 *    _____  .________________________.___   _____  ___________ *"
echo    "                 *   /  _  \ |   \______   \__    ___/|   | /     \ \_   _____/ *"
echo    "                 *  /  /_\  \|   ||       _/ |    |   |   |/  \ /  \ |    __)_  *"
echo    "                 * /    |    \   ||    |   \ |    |   |   /    Y    \|        \ *"
echo    "                 * \____|__  /___||____|_  / |____|   |___\____|__  /_______  / *"
echo    "                 *         \/            \/                       \/        \/  *"
echo    "                 ****************************************************************"

echo    "               ____ ______   ____   ____     __________  __ _________   ____  ____    "
echo -e "              /  _ \\\\____ \_/ __ \ /    \   /  ___/  _ \|  |  \_  __ \_/ ___\/ __ \ "
echo    "             (  <_> )  |_> >  ___/|   |  \  \___ (  <_> )  |  /|  | \/\  \__\  ___/   "
echo    "              \____/|   __/ \___  >___|  / /____  >____/|____/ |__|    \___  >___  >  "
echo    "                    |__|        \/     \/       \/                         \/    \/   "
echo    "                   .___.__                        __                         __  .__                    "
echo    "____________     __| _/|__| ____   _____   __ ___/  |_  ____   _____ _____ _/  |_|__| ____   ____       "
echo -e "\_  __ \__  \   / __ | |  |/  _ \  \__  \ |  |  \   __\/  _ \ /     \\\\__  \\\\   __\  |/  _ \ /    \  "
echo    " |  | \// __ \_/ /_/ | |  (  <_> )  / __ \|  |  /|  | (  <_> )  Y Y  \/ __ \|  | |  (  <_> )   |  \     "
echo    " |__|  (____  /\____ | |__|\____/  (____  /____/ |__|  \____/|__|_|  (____  /__| |__|\____/|___|  /     "
echo    "            \/      \/                  \/                         \/     \/                    \/      "

if [ apache = "t" ]; then
    echo -e "\n-----------------------------------------------------"
    echo    "                * Installing Apache *                "
    echo    "-----------------------------------------------------"

    apt-get -y --force-yes install apache2 libapache2-mod-php5
    set +e
    apache2 -v | grep "2\.4" > /dev/null
    apacheversion=$?
    set -e

    # Apache Config File
    if [ "$apacheversion" != "1" ]; then
        airtimeconfigfile="airtime.conf"
    else
        airtimeconfigfile="airtime"
    fi

    if [ ! -f /etc/apache2/sites-available/${airtimeconfigfile} ]; then
        echo " ## Creating Apache config for Airtime..."

        cp apache/airtime-vhost /etc/apache2/sites-available/${airtimeconfigfile}
        a2dissite 000-default
        a2ensite airtime
    else
        echo "Apache config for Airtime already exists, skipping"
    fi

    if [ ! -d /usr/share/airtime/public ]; then
        echo " ## Creating Apache web root directory..."
        mkdir -p /usr/share/airtime/public/
    else
        echo "Airtime web root directory already exists, skipping"
    fi
fi

echo -e "\n-----------------------------------------------------"
echo    "                  * Installing PHP *                 "
echo    "-----------------------------------------------------"

apt-get -y --force-yes install php5

echo " ## Installing Zend framework..."
#Debian Squeeze only has zendframework package. Newer versions of Ubuntu have zend-framework package.
#Ubuntu Lucid has both zendframework and zend-framework. Difference appears to be that zendframework is for
#1.10 and zend-framework is 1.11
if [ "$dist" = "Debian" ]; then
    apt-get -y --force-yes install zendframework
else
    apt-get -y --force-yes install libzend-framework-php
fi

# PHP Config File for Apache
if [ ! -f /etc/php5/apache2/airtime.ini ]; then
    echo " ## Creating Airtime PHP config for Apache..."
    cp php/airtime.ini /etc/php5/apache2/conf.d/airtime.ini
else
    echo "Airtime PHP config for Apache already exists, skipping"
fi

# Enable modules
a2enmod rewrite php5
service apache2 restart

echo -e "\n-----------------------------------------------------"
echo    "              * Installing PostgreSQL *              "
echo    "-----------------------------------------------------"

apt-get -y --force-yes install postgresql php5-pgsql

echo -e "\n-----------------------------------------------------"
echo    "               * Setting up RabbitMQ *               "
echo    "-----------------------------------------------------"

apt-get -y --force-yes install rabbitmq-server

RABBITMQ_VHOST=$(awk -F ' = ' '{if (! ($0 ~ /^;/) && $0 ~ /^vhost/ ) print $2}' ../airtime_mvc/build/airtime.example.conf)
RABBITMQ_USER=$(awk -F ' = ' '{if (! ($0 ~ /^;/) && $0 ~ /^user/ ) print $2}' ../airtime_mvc/build/airtime.example.conf)
RABBITMQ_PASSWORD=$(awk -F ' = ' '{if (! ($0 ~ /^;/) && $0 ~ /^password/ ) print $2}' ../airtime_mvc/build/airtime.example.conf)
EXCHANGES="airtime-pypo|pypo-fetch|airtime-media-monitor|media-monitor"

rabbitmqctl list_vhosts | grep -w ${RABBITMQ_VHOST}
RESULT="$?"

# Only run these if the user doesn't exist
if [ ${RESULT} != "0" ]; then
    echo " ## Creating RabbitMQ user ${RABBITMQ_USER}..."

    rabbitmqctl add_vhost ${RABBITMQ_VHOST}
    rabbitmqctl add_user ${RABBITMQ_USER} ${RABBITMQ_PASSWORD}
else
    echo "RabbitMQ user already exists, skipping creation"
fi

echo " ## Setting RabbitMQ user permissions..."
rabbitmqctl set_permissions -p ${RABBITMQ_VHOST} ${RABBITMQ_USER} "$EXCHANGES" "$EXCHANGES" "$EXCHANGES"

echo -e "\n-----------------------------------------------------"
echo    "                * Installing Airtime *               "
echo    "-----------------------------------------------------"

mkdir /etc/airtime
chown -R ${web_user}:${web_user} /etc/airtime

echo -e "\n-----------------------------------------------------"
echo    "                * Basic Setup DONE! *                "
echo    "                                                     "
echo    "  To get started with Airtime, visit localhost:5000  "
echo    "   or, if you've set up your own web configuration,  "
echo    "        the Airtime webroot on your webserver        "
echo    "            in your web browser of choice            "
echo    "-----------------------------------------------------"