#!/bin/sh

LIST_OF_OSS_APPS="aumix sox"

show_help() {
    echo "setup-pulseaudio [ --enable | --disable | --status ]"
    echo ""
    echo "Sets up PulseAudio configuration for all sound-based applications"
    echo "  --enable   Enables PulseAudio"
    echo "  --disable  Disables PulseAudio"
    echo "  --status   Shows activation state (disabled or enabled) for PulseAudio"
    exit
}

enable_alsa() {
    # Add PCM PA device
    if grep pcm.pulse /etc/asound.conf; then
	echo "pcm.pulse device already in /etc/asound.conf"
    else
	echo "" >> /etc/asound.conf
	echo "pcm.pulse {" >> /etc/asound.conf
	echo "    type pulse" >> /etc/asound.conf
	echo "}" >> /etc/asound.conf
    fi

    # Add CTL PA device
    if grep ctl.pulse /etc/asound.conf; then
	echo "ctl.pulse device already in /etc/asound.conf"
    else
	echo "" >> /etc/asound.conf
	echo "ctl.pulse {" >> /etc/asound.conf
	echo "    type pulse" >> /etc/asound.conf
	echo "}" >> /etc/asound.conf
    fi

    # Now set the default devices
    if grep "pcm.!default" /etc/asound.conf; then
	echo ""
    else
	echo "" >> /etc/asound.conf
	echo "pcm.!default {" >> /etc/asound.conf
	echo "    type pulse" >> /etc/asound.conf
        echo "}" >> /etc/asound.conf
    fi

    if grep "ctl.!default" /etc/asound.conf; then
	echo ""
    else
	echo "" >> /etc/asound.conf
	echo "ctl.!default {" >> /etc/asound.conf
	echo "    type pulse" >> /etc/asound.conf
        echo "}" >> /etc/asound.conf
    fi
}

enable_libao() {
    if grep "default_driver=pulse" /etc/libao.conf; then
	echo "Default driver is pulse already in /etc/libao.conf"
    else
	echo "default_driver=pulse" >> /etc/libao.conf
    fi
}

enable_mplayer() {
    # Maybe it would be better to just add a alias mplayer=mplayer -ao pulse to /etc/environment?
    if grep "ao=pulse" /etc/mplayer/mplayer.conf; then
	echo "Default driver is pulse already in /etc/mplayer/mplayer.conf"
    else
	if grep "ao=" /etc/mplayer/mplayer.conf; then
	    echo ""
	else
	    echo "ao=pulse" >> /etc/mplayer/mplayer.conf
	fi
    fi

    # FIXME: mplayerplug-in uses $HOME/.mplayer/mplayerplug-in.conf
}

enable_openal() {
    # FIXME: openal uses ~/.openalrc
    echo ""
}

enable_oss() {
    for app in $LIST_OF_OSS_APPS; do
	if grep "alias $app=padsp $app" /etc/environment; then
	    echo "Application $app already setup for PulseAudio"
	else
	    echo "alias $app=padsp $app" >> /etc/environment
	fi
    done
}

enable_sdl() {
    # For SDL, we just add an environment variable, so that apps use the PA audio driver
    if grep SDL_AUDIODRIVER /etc/environment; then
	sed s/SDL_AUDIODRIVER*/SDL_AUDIODRIVER=pulse /etc/environment
    else
	echo "SDL_AUDIODRIVER=pulse" >> /etc/environment
    fi
}

enable_timidity() {
    # Use esound output for timidity
    if grep "alias timidity=timidity -Oe" /etc/environment; then
	echo "Timidity already setup for using PulseAudio"
    else
	echo "alias timidity=timidity -Oe" >> /etc/environment
    fi
}

enable_xine() {
    # FIXME: xine uses $HOME/.xine/config
    echo ""
}

disable_alsa() {
    # FIXME: perl -pi -e ...
    echo ""
}

disable_libao() {
    perl -pi -e "s|default_driver=pulse||g;" /etc/libao.conf
}

disable_mplayer() {
    perl -pi -e "s|ao=pulse||g;" /etc/mplayer/mplayer.conf
}

disable_openal() {
    # FIXME: openal uses ~/.openalrc
    echo ""
}

disable_oss() {
    for app in $LIST_OF_OSS_APPS; do
	perl -pi -e "s|alias $app=padsp $app||g;" /etc/environment
    done
}

disable_sdl() {
    if grep "SDL_AUDIODRIVER=pulse" /etc/environment; then
	sed s/SDL_AUDIODRIVER=pulse// /etc/environment
    fi
}

disable_timidity() {
    perl -pi -e "s|alias timidity=timidity -Oe||g:" /etc/environment
}

disable_xine() {
    # FIXME: xine uses $HOME/.xine/config
    echo ""
}

case $1 in
    --enable)
	ENABLE=1
	enable_alsa
	enable_libao
	enable_mplayer
	enable_openal
	enable_oss
	enable_sdl
	enable_timidity
	enable_xine
	;;
    --disable)
	ENABLE=0
	disable_alsa
	disable_libao
	disable_mplayer
	disable_openal
	disable_oss
	disable_sdl
	disable_timidity
	disable_xine
	;;
    --status)
	STATUS=`grep PULSEAUDIO_ENABLE /etc/sysconfig/sound | cut -f2 -d= | cut -f2 -d\"`
	if [ "x$STATUS" = "xyes" ]; then
	    echo "enabled"
	else
	    echo "disabled"
	fi
	exit
	;;
    *)
	show_help
	;;
esac

# Now, update /etc/sysconfig/sound with the PA status
if grep PULSEAUDIO_ENABLE /etc/sysconfig/sound; then
    if grep "PULSEAUDIO_ENABLE=\"yes\"" /etc/sysconfig/sound; then
	echo ""
    fi
else
    if [ "x$ENABLE" = "x1" ]; then
	echo "PULSEAUDIO_ENABLE=\"yes\"" >> /etc/sysconfig/sound
    fi
fi

/sbin/SuSEconfig