#!/bin/sh
#-------------------------------------------------------------------------------
#   Copyright (c) 2004 Media Development Loan Fund
#
#   This file is part of the Campcaster project.
#   http://campcaster.campware.org/
#   To report bugs, send an e-mail to bugs@campware.org
#
#   Campcaster is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   Campcaster is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with Campcaster; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#
#   Author   : $Author$
#   Version  : $Revision$
#   Location : $URL$
#-------------------------------------------------------------------------------                                                                                
#-------------------------------------------------------------------------------
#  This script updates the configuration file of Campcaster Studio.
#
#  Invoke as:
#  ./bin/updateStudioConfig.sh
#
#  To get usage help, try the -h option
#-------------------------------------------------------------------------------

#-------------------------------------------------------------------------------
#  Determine directories, files
#-------------------------------------------------------------------------------
reldir=`dirname $0`/..
basedir=`cd $reldir; pwd;`
bindir=$basedir/bin
etcdir=$basedir/etc
docdir=$basedir/doc
tmpdir=$basedir/tmp


#-------------------------------------------------------------------------------
#  Print the usage information for this script.
#-------------------------------------------------------------------------------
printUsage()
{
    echo "Campcaster Studio post-install script.";
    echo "parameters";
    echo "";
    echo "  -d, --directory     The installation directory, required.";
    echo "  -H, --host          The fully qualified host name of the system";
    echo "                      [default: guess].";
    echo "  -p, --port          The port of the apache web server [default: 80]"
    echo "  -P, --scheduler-port    The port of the scheduler daemon to install"
    echo "                          [default: 3344]";
    echo "  -o, --output-device The audio device of live-mode broadcast";
    echo "                          [default: default]";
    echo "  -c, --cue-device    The audio device of preview listening";
    echo "                          [default: default]";
    echo "  -h, --help          Print this message and exit.";
    echo "";
}


#-------------------------------------------------------------------------------
#  Process command line parameters
#-------------------------------------------------------------------------------
CMD=${0##*/}

opts=$(getopt -o d:H:hp:P:c:o: -l directory:,host:,help,port:,scheduler-port:,cue-device:,output-device: -n $CMD -- "$@") || exit 1
eval set -- "$opts"
while true; do
    case "$1" in
        -d|--directory)
            installdir=$2;
            shift; shift;;
        -H|--host)
            hostname=$2;
            shift; shift;;
        -h|--help)
            printUsage;
            exit 0;;
        -p|--port)
            http_port=$2;
            shift; shift;;
        -P|--scheduler-port)
            scheduler_port=$2;
            shift; shift;;
        -o|--output-device)
            output_alsa_device=$2;
            shift; shift;;
        -c|--cue-device)
            cue_alsa_device=$2;
            shift; shift;;			
        --)
            shift;
            break;;
        *)
            echo "Unrecognized option $1.";
            printUsage;
            exit 1;
    esac
done

if [ "x$installdir" == "x" ]; then
    echo "Required parameter install directory not specified.";
    printUsage;
    exit 1;
fi

if [ "x$hostname" == "x" ]; then
    hostname=`hostname -f`;
fi

if [ "x$http_port" == "x" ]; then
    http_port=80;
fi

if [ "x$scheduler_port" == "x" ]; then
    scheduler_port=3344;
fi

if [ "x$output_alsa_device" == "x" ]; then
    output_alsa_device="default";
fi

if [ "x$cue_alsa_device" == "x" ]; then
    cue_alsa_device="default";
fi

echo "Making post-install steps for Campcaster Studio.";
echo "";
echo "Using the following installation parameters:";
echo "";
echo "  installation directory: $installdir";
echo "  host name:              $hostname";
echo "  web server port:        $http_port";
echo "  scheduler port:         $scheduler_port";
echo "  live broadcast device:  $output_alsa_device";
echo "  preview device:         $cue_alsa_device";
echo ""

#-------------------------------------------------------------------------------
#  The details of installation
#-------------------------------------------------------------------------------
ls_php_host=$hostname
ls_php_port=$http_port
ls_php_urlPrefix=campcaster

ls_alib_xmlRpcPrefix="xmlrpc/xrLocStor.php"
ls_storage_xmlRpcPrefix="xmlrpc/xrLocStor.php"

ls_scheduler_host=$hostname
ls_scheduler_port=$scheduler_port
ls_scheduler_urlPrefix=
ls_scheduler_xmlRpcPrefix=RC2
ls_output_alsa_device=$output_alsa_device
ls_cue_alsa_device=$cue_alsa_device


install_bin=$installdir/bin
install_etc=$installdir/etc
install_lib=$installdir/lib
install_tmp=$installdir/tmp
install_var=$installdir/var


# replace / characters with a \/ sequence, for sed below
# the sed statement is really "s/\//\\\\\//g", but needs escaping because of
# bash, hence the extra '\' characters
install_var_s=`echo $install_var | sed -e "s/\//\\\\\\\\\//g"`
ls_storage_xmlRpcPrefix_s=`echo $ls_storage_xmlRpcPrefix | \
                                sed -e "s/\//\\\\\\\\\//g"`
ls_alib_xmlRpcPrefix_s=`echo $ls_alib_xmlRpcPrefix | sed -e "s/\//\\\\\\\\\//g"`
ls_php_urlPrefix_s=`echo $ls_php_urlPrefix | sed -e "s/\//\\\\\\\\\//g"`
ls_scheduler_urlPrefix_s=`echo $ls_scheduler_urlPrefix | \
                                sed -e "s/\//\\\\\\\\\//g"`
ls_scheduler_xmlRpcPrefix_s=`echo $ls_scheduler_xmlRpcPrefix | \
                                sed -e "s/\//\\\\\\\\\//g"`
ls_output_alsa_device_s=`echo $ls_output_alsa_device | sed -e "s/\//\\\\\\\\\//g"`
ls_cue_alsa_device_s=`echo $ls_cue_alsa_device | sed -e "s/\//\\\\\\\\\//g"` 

replace_sed_string="s/ls_var_dir/$install_var_s/; \
              s/ls_php_urlPrefix/$ls_php_urlPrefix_s/; \
              s/ls_php_host/$ls_php_host/; \
              s/ls_php_port/$ls_php_port/; \
              s/ls_alib_xmlRpcPrefix/$ls_alib_xmlRpcPrefix_s/; \
              s/ls_audio_output_device/$ls_output_alsa_device_s/; \
              s/ls_audio_cue_device/$ls_cue_alsa_device_s/; \
              s/ls_scheduler_host/$ls_scheduler_host/; \
              s/ls_scheduler_port/$ls_scheduler_port/; \
              s/ls_scheduler_xmlRpcPrefix/$ls_scheduler_xmlRpcPrefix_s/;"


#-------------------------------------------------------------------------------
#  Function to check for the existence of an executable on the PATH
#
#  @param $1 the name of the exectuable
#  @return 0 if the executable exists on the PATH, non-0 otherwise
#-------------------------------------------------------------------------------
check_exe() {
    if [ -x "`which $1 2> /dev/null`" ]; then
        echo "Executable $1 found...";
        return 0;
    else
        echo "Executable $1 not found...";
        return 1;
    fi
}


#-------------------------------------------------------------------------------
#  Check for required tools
#-------------------------------------------------------------------------------
echo "Checking for required tools..."

check_exe "sed" || exit 1;


#-------------------------------------------------------------------------------
#  Customize the configuration files with the appropriate values
#-------------------------------------------------------------------------------
echo "Customizing configuration files..."

# customize the Campcaster Studio config file
cat $install_etc/campcaster-studio.xml.template \
    | sed -e "$replace_sed_string" \
    > $install_etc/campcaster-studio.xml


#-------------------------------------------------------------------------------
#  Say goodbye
#-------------------------------------------------------------------------------
echo "Done."