#!/bin/bash
#
# Mplayer install script for OLPC XO-1 computer
#
# Copyright ©2008 by Richard Hitt

#  This program 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, or (at your option)
#  any later version.

#  This program 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 this program; if not, write to the Free Software Foundation,
#  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#
# Installing mplayer on olpc (with all the bad non-free codecs)
# This document tries to be a bit of a tutorial rather than just a list of what to do,

# This script does four commands:
#       * Installs the livna repository
#       * Installs the libdvdread package
#       * Installs the libdvdnav package
#       * Installs the mplayer package and other packages it needs
# Note that when the OLPC repository gets updated to have libdvdnav,
# we will need only the first and last steps.  The middle two should
# be regarded as ugly but temporarily necessary.
#
# Throughout, we avoid having to execute this script as root by using the form
#       su -c "command line"
# 
# The livna repository includes non-free codecs, which is why it's not in
# the standard repository.
#
# Output from the install commands will be redirected to /tmp/mplayer-install.log
#
OUTLOG=/tmp/mplayer-install.log
rm -f $OUTLOG
echo "Install started at $(date)" >> $OUTLOG

#
# Zeroth, if there's already an installed mplayer, abandon ship
#
if [ -x $(which mplayer) ]; then
        echo "Oops, I see you already have a valid mplayer command.  If you want to"
        echo "use this script to install the official one, please uninstall it."
        echo "The mplayer command's full path is $(which mplayer)."
        exit 1
fi

#
# First, install the livna repository package ---
#
if /bin/rpm -q livna-release 2>1 >/dev/null; then
        echo "Good, the livna-release package is already installed."
else
        echo "I'm installing the livna-release package; most of the"
        echo "mplayer stuff is in the livna repositories."
        su -c "rpm -i http://rpm.livna.org/livna-release-7.rpm" 2>1 >> $OUTLOG
        if rpm -q livna-release 2>1 >/dev/null; then
                echo "Good, looks like that worked."
        else
                echo "Oops, somehow I cannot install the livna-release package.  Sorry!!"
                exit 1
        fi
fi

#
# Our third step will install libdvdnav; but that package requires libdvdread!  And since
# we are using a URL to get libdvdnav we cannot install it with yum-install and thereby
# automatically resolve dependencies.  So Let's install libdvdread now.
#
if rpm -q libdvdread 2>1 >/dev/null; then
        echo "Good, libdvdread is already installed, needed for libdvdnav."
else
        echo "I'll install libdvdread now, because libdvdnav will need it."
        su -c "yum -y install libdvdread" 2>1 >> $OUTLOG
        if rpm -q libdvdread 2>1 >/dev/null; then
                echo "Good, looks like libdvdread installed okay."
        else
                echo "Oops, somehow libdvdread didn't want to install!  Sorry!!"
                exit 1
        fi
fi

#
# Now we're ready to install libdvdnav.  We use a copy we found at rpm.pbone.net.
#
if rpm -q libdvdnav 2>1 >/dev/null; then
        echo "Good, libdvdnav is already installed too!"
else
        echo "I will install libdvdnav from rpm.pbone.net now."
        su -c "rpm -i ftp://ftp.pbone.net/mirror/download.fedora.redhat.com/pub/fedora/linux/updates/7/x86_64/libdvdnav-4.1.1-2.fc7.i386.rpm" 2>1 >> $OUTLOG
        if rpm -q libdvdnav 2>1 >/dev/null; then
                echo "Good, seems as if libdvdnav installed correctly."
        else
                echo "Oops, we couldn't install libdvdnav, what's up with that?? Sorry!!"
                exit 1
        fi
fi

#
# Finally we install mplayer; yum will probably find 20 or so dependencies
# so we warn that it may take several minutes.
#
if rpm -q mplayer 2>1 >/dev/null; then
        echo "Hmm, it does look like mplayer is already installed!  Hope this is okay."
else
        echo "Now I'm installing mplayer.  WARNING:  Since mplayer requires"
        echo "several additional packages (which I'll install too), count on"
        echo "this step to take several minutes!"
        su -c "yum -y install --nogpgcheck mplayer" 2>1 >> $OUTLOG
        if rpm -q mplayer 2>1 >/dev/null; then
                echo "Congratulations!!  mplayer is now installed!"
                echo "For a log of the output of the install steps,"
                echo "read file $OUTLOG."
        else
                echo "Oooooooops!  Apparently the install failed!  Please check"
                echo "the log of the install commands we used, at $OUTLOG."
                exit 1
        fi
fi
echo "Install ended at $(date)" >> $OUTLOG