#!/bin/bash
# This script builds a maintainance LyX distribution according to 
# the procedure outlined at:
#   http://wiki.lyx.org/Devel/ReleaseProcedure
# It also includes several other tests, to make sure the packages
# works as it should.

#DEBUG=echo;

# A few variables need to be set, here at the top. 
#
# Where we will do our work
BASE="/cvs/lyx/lyx-release";
# Where our git repository lives
SRCDIR="/cvs/lyx/lyx-stable";
# editor 
if [ -z "$EDITOR" ]; then EDITOR=vi; fi
# Options to make, when we compile
MAKEOPTS="-j4";
# Compile?
COMPILE="YES";

PKGNUM="";
while getopts ":Cm:p:" opt; do
  case $opt in
    C )   COMPILE="";;
    m )   MAKEOPTS="$OPTARG";;
    p )   PKGNUM="$OPTARG";;
    \? )  echo "Unknown option $opt"; exit 1;;
  esac
done
shift $(($OPTIND - 1));

# Determine LyX version
cd $SRCDIR/
VERSION=$(head configure.ac | grep AC_INIT | perl -e 'while (<>) {m/AC_INIT\(LyX,([^,]+)/; print $1;}');
VERSION_BASE="$VERSION";

if [ -n "$PKGNUM" ]; then
    VERSION="$VERSION-$PKGNUM";
fi

echo "This is version $VERSION.";
echo -n "Ready to build source packages...";
read

echo "Exporting clean tree...";
$DEBUG rm -Rf $BASE/lyx-export/
$DEBUG git checkout-index -a -f --prefix=$BASE/lyx-export/
$DEBUG cd $BASE/lyx-export/
$DEBUG ./autogen.sh
$DEBUG rm -Rf $BASE/lyx-build/
$DEBUG mkdir $BASE/lyx-build/
$DEBUG cd $BASE/lyx-build/

echo "Building distribution...";
$DEBUG $BASE/lyx-export/configure --enable-build-type=rel --enable-qt5
if ! $DEBUG make lyxdist; then
  echo "Couldn't make distribution!";
  exit 1;
fi

echo "Packages created:";
if [ -n "$PKGNUM" ]; then
    $DEBUG mv lyx-$VERSION_BASE.tar.gz lyx-$VERSION.tar.gz;
    $DEBUG mv lyx-$VERSION_BASE.tar.xz lyx-$VERSION.tar.xz;
fi
$DEBUG cp -v lyx-$VERSION.tar.{gz,xz} $BASE;

echo -n "Ready to build signatures...";
read

$DEBUG gpg -b lyx-$VERSION.tar.gz
$DEBUG gpg -b lyx-$VERSION.tar.xz

echo "Signatures created:"
$DEBUG cp -v lyx-$VERSION.tar.*.sig $BASE;

if [ -n "$COMPILE" ]; then
    echo -n "Ready to test compilation...";
    read

    $DEBUG rm -Rf $BASE/lyx-test/
    $DEBUG mkdir $BASE/lyx-test/
    $DEBUG cd $BASE/lyx-test/
    $DEBUG tar -zxvf $BASE/lyx-build/lyx-$VERSION.tar.gz
    if ! $DEBUG cd lyx-$VERSION_BASE; then
    echo "Unable to enter build directory!";
    exit 1;
    fi

    $DEBUG ./configure --enable-build-type=rel --enable-qt5

    if $DEBUG make $MAKEOPTS; then
    echo "Compilation complete.";
    echo -n "Ready to run LyX...";
    read
    $DEBUG src/lyx -userdir /tmp/lyx-test
    else
    echo "Compilation errors!!";
    exit 1;
    fi
fi

LASTNUM=$(echo $VERSION_BASE | sed -e 's/.*\.//');
LAST=$((LASTNUM - 1));
FIRST=$(echo $VERSION_BASE | sed -e 's/[0-9]*$//');
ORIGINAL=${FIRST}0;
LAST=$FIRST$LAST;

if [ ! -d "$BASE/lyx-patch/" ]; then
	$DEBUG mkdir "$BASE/lyx-patch/" || exit 1;
fi

if [ ! -d $BASE/lyx-patch/lyx-$LAST ]; then 
    echo "Can't find directory for last version $LAST.";
    echo "See if you can fix this in $BASE/lyx-patch/.";
    echo "Try that, if you like, and then we'll continue.";
    echo "We'll try to download from the LyX site if that does not work.";
    read;

    if [ -z "$DEBUG" ]; then
        if [ ! -d $BASE/lyx-patch/lyx-$LAST ]; then 
            echo "Will try to download from LyX site....";
            pushd $BASE/lyx-patch/;
            wget ftp://ftp.lyx.org/pub/lyx/stable/${FIRST}x/lyx-$LAST.tar.gz;
            wget ftp://ftp.lyx.org/pub/lyx/stable/${FIRST}x/lyx-$LAST.tar.gz.sig
            gpg -q --verify lyx-$LAST.tar.gz.sig
            if ! [ $? == 0 ]; then
                echo "Signature wrong!"
                exit 1;
            fi
            rm lyx-$LAST.tar.gz.sig
            tar -zxvf lyx-$LAST.tar.gz;
            if [ ! -f lyx-$LAST.tar.gz ]; then
                echo "Still unable to find directory for last version $LAST.";
                exit 1;
            fi
            $DEBUG popd;
        fi
    fi
fi

echo -n "Ready to make patch against $LAST...";
read

$DEBUG cd $BASE/lyx-patch/;
if [ -z "$DEBUG" ]; then
    tar -zxvf $BASE/lyx-build/lyx-$VERSION.tar.gz >/dev/null;
    diff -urN -x .svn -x version.cpp lyx-$LAST lyx-$VERSION_BASE > patch;
    echo -n "Please check the patch...";
    read
    $EDITOR patch;
else
    $DEBUG tar -zxvf $BASE/lyx-build/lyx-$VERSION.tar.gz;
    $DEBUG diff -urN -x .svn -x version.cpp lyx-$LAST lyx-$VERSION_BASE;
fi


NUMFIX="th";
if [ "$LASTNUM" = "1" ]; then
  NUMFIX="st";
elif [ "$LASTNUM" = "2" ]; then
  NUMFIX="nd";
fi
NUM="$LASTNUM$NUMFIX";
if [ -z "$DEBUG" ]; then
    cat $BASE/lyx-export/development/tools/patch-preamble | \
    sed -e "s/VERSION/$VERSION_BASE/; s/ORIGINAL/$ORIGINAL/; s/LAST/$LAST/; s/NUM/$NUM/;" >patch-preamble;
    echo -n "Please verify the patch preamble...";
    read
    $EDITOR patch-preamble;
    PATCH="patch-$VERSION";
    cat patch-preamble $BASE/lyx-export/ANNOUNCE patch >$PATCH;
    gzip -c $PATCH > $PATCH.gz
    if [ -f $PATCH.gz.sig ]; then
        rm $PATCH.gz.sig;
    fi
    gpg -b $PATCH.gz
    xz -zc $PATCH > $PATCH.xz
    if [ -f $PATCH.xz.sig ]; then
        rm $PATCH.xz.sig;
    fi
    $DEBUG gpg -b $PATCH.xz

    echo -n "Patch and signatures created...";
    cp -v $PATCH.gz $PATCH.gz.sig $PATCH.xz $PATCH.xz.sig $BASE;
fi