#!/bin/sh

echo
echo -e "\e[1;95m Welcome to Yet Another Internet Radio installer
 -----------------------------------------------
\e[0;37m"

echo -n "Checking if audio hardware is installed..."

#check if audio hardware is installed. Works only in CC (in BB a restart is needed after installing audio packages)
if ! `cat /etc/banner | grep -q BARRIER`; then
 if ! `ls /dev | grep -q -e audio -e dsp -e mixer`; then 
 is_audio=0
 echo
 echo -en "\e[1;95mSoundcard was not detected.\e[0;37m"
 read -p $'\n'"The installer can still copy the required files and install needed packages, but the radio will not work unless audio hardware is installed."$'\n'"Do you want to continue (y/n)?" choice
 case "$choice" in 
  y|Y ) 
   ;;
  n|N ) return 1;;
  * ) 
   echo "invalid choice, assume no"; return 1
   ;;
 esac
 else is_audio=1;
 fi
 echo  Done!
else echo " BarrierBreaker detected, skipping this step."
fi

echo -en "\e[1;95mThis installation will overwrite existing files in the /www directory and subfolders.\e[0;37m"
read -p "Are you sure you want to continue (y/n)?" choice
case "$choice" in 
  y|Y ) 
   ;;
  n|N ) return 1;;
  * ) 
   echo "invalid choice, assume no"; return 1
   ;;
esac

if `wget -sq http://www.google.ro/index.html`;then is_online=1; else is_online=0; fi
if [ $is_online == 0 ]; then
 echo -en "\e[1;95mThis box is not connected to the Internet. \e[0;37m"
 echo "Script will now quit"$'\n'"Connect your browser to http://<ipofthisbox> or modify manually the config files in /etc/config to connect to the Internet."
 return 1
fi

echo -n "Updating packages..."
opkg update > /dev/null 2>&1
if [ ! $? == 0 ]; then echo $'\n'"There was a problem executing opkg update. Script will now exit.";return 1;else echo ' Done!';fi

num=`df | grep rootfs | awk '{print $4}'`
if [ "$num" -gt "50000" ]; then is_extroot=1;else is_extroot=0;fi

if [ ! $is_extroot == 1 ]; then 
 echo -en "\e[1;95mThis box does not have a working extroot filesystem. \e[0;37m"
 echo "Script will now quit."
 return 1
fi

if `cat /etc/banner | grep -q CHAOS`; then
 echo -n "OpenWrt CHAOS CALMER release detected, installing prerequisites..."
 opkg install curl kmod-usb-audio kmod-sound-core alsa-utils gstreamer1 gstreamer1-utils gstreamer1-plugins-base gst1-plugins-good gst1-libav > /dev/null 2>&1
else
 echo -n "BARRIER BREAKER or earlier release detected, installing prerequisites..."
 opkg install curl kmod-usb-audio kmod-sound-core alsa-utils gstreamer gstreamer-utils gst-plugins-base gst-plugins-good gst-plugins-ugly gst-mod-faad gst-mod-souphttpsrc > /dev/null 2>&1
fi
if [ ! $? == 0 ]; then echo "There was a problem installing the prerequisites. Script will now exit.";return 1;else echo " Done!";fi

echo -n "Downloading web interface of the radio from Github..."
curl -ksf https://raw.githubusercontent.com/c2sandu/webradio/master/radio.tar.gz -o /tmp/radio.tar.gz
if [ ! $? == 0 ]; then echo "There was a problem downloading the archive from Github. Script will now exit.";return 1;
else
 echo " Done!";
 echo -n "Decompressing web interface to /www..."
 tar zxvf /tmp/radio.tar.gz -C /www > /dev/null 2>&1
 if [ ! $? == 0 ]; then echo $'\n'"There was a problem decompressing the archive. Script will now exit.";return 1;else echo ' Done!';fi
fi

if [ "$is_audio" == "1" ]; then 
 read -p "Do you want to start the web radio now (y/n)?" choice
 case "$choice" in 
  y|Y ) 
   if `cat /etc/banner | grep -q CHAOS`; then
    killall gst-launch-1.0 > /dev/null 2>&1
    index=`cat /www/index`
    url=`awk "NR == $index" /www/radio | cut -f2 -d"|"`
    gst-launch-1.0 -t playbin uri=$url | awk /title:/ | tee /tmp/title > /dev/null 2>&1 &
   else
    killall gst-launch-0.10 > /dev/null 2>&1
    index=`cat /www/index`
    url=`awk "NR == $index" /www/radio | cut -f2 -d"|"`
    gst-launch -t playbin uri=$url | awk /title:/ | tee /tmp/title > /dev/null 2>&1 &
   fi
   ;;
  n|N ) ;;
  * ) echo "invalid choice, assume no";;
 esac
fi

if ! `cat /etc/rc.local | grep -q gst-launch`; then 
 read -p "Do you want to start the web radio automatically at router startup (y/n)?" choice
 case "$choice" in 
  y|Y ) 
    sed -i  '/exit 0/d' /etc/rc.local
    echo 'index=`cat /www/index`' >> /etc/rc.local
    echo 'name=`awk "NR == $index" /www/radio | cut -f1 -d"|"`' >> /etc/rc.local
    echo 'url=`awk "NR == $index" /www/radio | cut -f2 -d"|"`' >> /etc/rc.local
    echo 'alsactl -f /etc/alsa0.state nrestore' >> /etc/rc.local
    echo 'gst-launch-1.0 -t playbin uri=$url | awk /title:/ | tee /tmp/title &' >> /etc/rc.local
    #echo '/etc/init.d/restart_radio &' >> /etc/rc.local
    echo 'exit 0' >> /etc/rc.local
   ;;
  n|N ) ;;
  * ) echo "Invalid choice, assuming negative answer";;
 esac
fi

read -p "Do you want to restart the web radio if streaming stops for some reasons (temporary network problems, problems with the stream, etc)?"$'\n'"Use this option only if this box is dedicated for Internet radio. (y/n)?" choice
case "$choice" in 
  y|Y ) 
cat <<EOM > /etc/init.d/restart_radio
#!/bin/sh

while true ;
do 
if ps | grep gst-launch | grep -v grep > /dev/null
then
    echo "Running"
else
 index=\`cat /www/index\`
 name=\`awk "NR == \$index" /www/radio | cut -f1 -d"|"\`
 url=\`awk "NR == \$index" /www/radio | cut -f2 -d"|"\`
 alsactl -f /etc/alsa0.state nrestore
 gst-launch-1.0 -t playbin uri=\$url | awk /title:/ | tee /tmp/title &
 logger "Radio restarted by restart_radio"
fi
sleep 20;
done
EOM
   if `cat /etc/banner | grep -q BARRIER`; then
	sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /etc/init.d/restart_radio
   fi
   chmod +x /etc/init.d/restart_radio; /etc/init.d/restart_radio > /dev/null 2>&1 &
   sed -i  '/exit 0/d' /etc/rc.local
   if ! `cat /etc/rc.local | grep -q restart_radio`; then 
    echo '/etc/init.d/restart_radio &' >> /etc/rc.local
   fi
   echo 'exit 0' >> /etc/rc.local
   ;;
  n|N ) 
    rm /etc/init.d/restart_radio > /dev/null 2>&1; killall restart_radio > /dev/null 2>&1 
    ;;
  * ) 
    echo "invalid choice, assume no"
    rm /etc/init.d/restart_radio > /dev/null 2>&1; killall restart_radio > /dev/null 2>&1 
    ;;
esac

if `cat /etc/banner | grep -q BARRIER`; then
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /www/cgi-bin/first.cgi
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /www/cgi-bin/last.cgi
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /www/cgi-bin/next.cgi
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /www/cgi-bin/previous.cgi
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /www/cgi-bin/goto.cgi
 sed -i 's/gst-launch-1.0/gst-launch-0.10/g' /etc/rc.local
fi

echo -en "\e[1;95mDone! \e[0;37m"
echo -n "You can now access the web interface of the radio at "
echo -e "\e[1;95mhttp://<ipofthisbox>/radio.html\e[0;37m"
if `cat /etc/banner | grep -q BARRIER`; then
 echo "A reboot is needed for the audio hardware to work (Barrier Breaker)."
fi