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

if [ `whoami` != 'root' ]; then
    echo "Please run as root user."
    exit 1
fi

set +e
DEB=$(dpkg -s airtime 2> /dev/null | grep Status)
set -e
if [[ "$DEB" = "Status: install ok installed" ]]; then
    echo -e "\nDebian package of Airtime detected. Please use the debian package to upgrade.\n"
    exit 1
fi

showhelp () {
    echo "Usage: airtime-install [options]
--help|-h                         Displays usage information.
--overwrite|-o                    Overwrite any existing config files.
--preserve|-p                     Keep any existing config files.
--no-db|-n                        Turn off database install.
--reinstall|-r                    Force a fresh install of this Airtime Version
--media-monitor|-m                Install only media-monitor
--pypo|-p                         Install only pypo and liquidsoap
--show-recorder|-s                Install only show-recorder
--web|-w                          Install only files for web-server
--liquidsoap-keep-alive|-l        Keep Liquidsoap alive when upgrading
--disable-auto-start-services|-d  Disable auto-starting Airtime services"
}

overwrite="f"
preserve="f"
nodb="f"
reinstall="f"
mediamonitor="f"
pypo="f"
showrecorder="f"
web="f"
liquidsoap_keep_alive="f"
disable_auto_start_services="f"

set -- $(getopt -l help,overwrite,preserve,no-db,reinstall,media-monitor,pypo,show-recorder,web,liquidsoap-keep-alive,disable-auto-start-services "hopnrmyswld" "$@")
while [ $# -gt 0 ]
do
    case "$1" in
    (-h|--help) showhelp; exit 0;;
    (-o|--overwrite) overwrite="t";;
    (-p|--preserve) preserve="t";;
    (-n|--no-db) nodb="t";;
    (-r|--reinstall) reinstall="t";;
    (-m|--media-monitor) mediamonitor="t";;
    (-y|--pypo) pypo="t";;
    (-s|--show-recorder) showrecorder="t";;
    (-w|--web) web="t";;
    (-l|--liquidsoap-keep-alive) liquidsoap_keep_alive="t";;
    (-d|--disable-auto-start-services) disable_auto_start_services="t";;
    
    (--) shift; break;;
    (-*) echo "$0: error - unrecognized option $1" 1>&2; exit 1;;
    (*)  break;;
    esac
    shift
done

if [ "$mediamonitor" = "f" -a "$pypo" = "f" -a "$showrecorder" = "f" -a "$web" = "f" ]; then
    #none of these install parameters were specified, so by default we install all of them
    mediamonitor="t"
    pypo="t"
    showrecorder="t"
    web="t"
fi

# Absolute path to this script, e.g. /home/user/bin/foo.sh
SCRIPT=`readlink -f $0`
# Absolute path this script is in, thus /home/user/bin
SCRIPTPATH=`dirname $SCRIPT`
AIRTIMEROOT=$SCRIPTPATH/../

#Check if required zend mvc and php-db libraries are present. This is a temporary workaround for 2.0.1, 
#and we should probably create a seperate file that checks whether ALL dependencies are satisfied before 
#allowing the install to continue. However in that case, we wouldn't check for Debian packages so that we 
#can become less Debian platform dependent in the future...
set +e
dpkg -l | grep php-db > /dev/null 2>&1
PHP_DB=$?

dpkg -l | grep zendframework > /dev/null 2>&1
ZENDFRAMEWORK=$?

dpkg -l | grep libzend-framework-php > /dev/null 2>&1
LIBZEND=$?
set -e

if [ "$PHP_DB" != "0" ]; then
    echo "php-db package missing. Please run airtime-full-install"
    exit 1
fi

if [ "$ZENDFRAMEWORK" != "0" -a "$LIBZEND" != "0" ]; then
    echo "zendframework/libzend-framework-php package missing. Please run airtime-full-install"
    exit 1
fi

# Check if airtime exists already
set +e
php --php-ini ${SCRIPTPATH}/airtime-php.ini ${SCRIPTPATH}/include/airtime-installed-check.php
result=$?
set -e

DO_UPGRADE="0"
if [ "$result" -eq "0" ]; then
    echo " * None found."
elif [ "$result" -eq "1" -a "$reinstall" = "f" ]; then
    echo " * Same version of Airtime already installed!"
    exit 1;
elif [ "$result" -eq "2" ]; then
    echo " * Previous version of Airtime already installed..will perform upgrade"
    DO_UPGRADE="1"
elif [ "$result" -eq "3" ]; then
    echo " * You require at least Airtime 1.8.0 installed for upgrade"
    exit 1
fi

#We don't want any of our python services running if we are doing an upgrade/reinstall.
#They will be automatically restarted later on.
if [ -e /etc/init.d/airtime-media-monitor ]; then
    /etc/init.d/airtime-media-monitor stop > /dev/null 2>&1
fi
if [ -e /etc/init.d/airtime-playout ]; then
    /etc/init.d/airtime-playout stop > /dev/null 2>&1
fi
if [ -e /etc/init.d/airtime-show-recorder ]; then
    /etc/init.d/airtime-show-recorder stop > /dev/null 2>&1
fi


#export these variables to make them available in sub bash scripts
export DO_UPGRADE
export mediamonitor
export pypo
export showrecorder
export web
export reinstall
export nodb
export overwrite
export preserve
export liquidsoap_keep_alive
export disable_auto_start_services

set +e
test "$mediamonitor" = "t" -o "$pypo" = "t" -o "$showrecorder" = "t"
export python_service=$?
set -e

echo -e "\n******************************** Install Begin *********************************"
rm -rf "/usr/lib/airtime"
if [ "$python_service" -eq "0" ]; then
    $AIRTIMEROOT/python_apps/python-virtualenv/virtualenv-install.sh

    virtualenv_bin="/usr/lib/airtime/airtime_virtualenv/bin/"
    . ${virtualenv_bin}activate
    python $AIRTIMEROOT/python_apps/create-pypo-user.py
fi


if [ "$DO_UPGRADE" -eq "1" ]; then
    #do upgrade
    php --php-ini ${SCRIPTPATH}/airtime-php.ini ${SCRIPTPATH}/include/airtime-upgrade.php $@
fi

$SCRIPTPATH/include/airtime-copy-files.sh
$SCRIPTPATH/include/airtime-initialize.sh $@

if [ "$mediamonitor" = "t" -o "$pypo" = "t" -o "$showrecorder" = "t" ]; then
    #deactivate virtualenv
    deactivate
fi


/usr/lib/airtime/utils/rabbitmq-update-pid.sh > /dev/null

touch /usr/share/airtime/public/index.php

if [ "$python_service" -eq "0" ]; then
    #only run airtime-check-system if all components were installed
    echo -e "\n*** Verifying your system environment, running airtime-check-system ***"
    sleep 15

    airtime-check-system --no-color
fi

echo -e "\n******************************* Install Complete *******************************"