#!/bin/bash
##  src2pkg.build-noarch
## This script builds the 'noarch' src2pkg package,
## including the libsentry library and tar-1.13 sources. Once you
## have built the package is installed, it must be run once
## as 'root' with the command 'src2pkg --setup'. Then you can build other
## packages from source using the src2pkg/trackinstall tools.
## src2pkg --setup can also be run during the installation of
## the package if you choose. either way, this serves to compile
## the libsentry library and tar program which src2pkg uses.

CWD=$(pwd)
# use /tmp if you can't write to the current working directory
TEMP_DIR=$CWD

NAME="src2pkg"
VERSION="1.9.5"
BUILD="3"
ARCH='noarch'

LIBSENTRY_VERSION="0.6.7.4"
TAR_VERSION=1.13

NORMAL=""
# RED: Failure or error message
RED=""
# GREEN: Success message
GREEN=""
# BLUE: Summary messages
BLUE=""

PKG_DIR=$TEMP_DIR/$NAME-$VERSION-$ARCH-$BUILD
PACKAGE=$TEMP_DIR/$NAME-$VERSION-$ARCH-$BUILD.tgz

[[ -d $PKG_DIR ]] && echo "Removing existing PKG_DIR" && rm -rf $PKG_DIR
[[ -e $PACKAGE ]] && echo "Removing existing package" && rm -rf $PACKAGE

echo ""

cd $TEMP_DIR ;

# build and use our own static copy of tar for consistent results if not available
# This is just for building the src2pkg noarch package, not for the package itself
cd $TEMP_DIR ;
if ! [[ $(which tar-1.13) ]] ; then
	echo "Creating a local static copy of the tar program."
	echo ""
	echo "Unpacking tar..."
	tar xjf $CWD/tar-$TAR_VERSION.tar.bz2
	if [[ "$TAR_VERSION" = "1.13" ]] ; then
	 cd tar-$TAR_VERSION
	 echo "patching tar..."
	 echo "This adds support for bzip2:"
	 patch -p1 < $CWD/tar-$TAR_VERSION-bzip2.diff
	fi
	echo -n "configuring tar..."
	if [[ $ARCH = "x86_64" ]] ; then
	 CFLAGS="-O2 -fPIC -static -s" ./configure --disable-nls --with-ncursesw --enable-widec &> /dev/null
	elif [[ $ARCH = "i486" ]] ; then
	 CFLAGS='-O2' ./configure --disable-nls --with-ncursesw --enable-widec &> /dev/null
	else
	 ./configure --disable-nls --with-ncursesw --enable-widec &> /dev/null
	fi
	
	if [[ $? -eq 0 ]] ; then
	 echo $GREEN"Done"$NORMAL
	else
	 echo "tar failed to configure... exiting."
	 exit
	fi
	echo -n "compiling tar..."
	if [[ $ARCH = "x86_64" ]] ; then
	 CFLAGS='-O2 -fPIC' LDFLAGS="-static -s" make &> /dev/null
	elif [[ $ARCH = "i486" ]] ; then
	 CFLAGS='-O2' LDFLAGS="-static -s" make &> /dev/null
	else
	 LDFLAGS="-static -s" make &> /dev/null
	fi
	
	if [[ $? -eq 0 ]] ; then
	 echo $GREEN"Done\n"$NORMAL
	else
	 echo "tar failed to compile... exiting."
	 exit
	fi
	TAR=$TEMP_DIR/tar-1.13/src/tar
else
	TAR=$(which tar-1.13)
fi

# build the package
echo "Creating Package Tree..."
mkdir -p $PKG_DIR
chown root:root $PKG_DIR
chmod 755 $PKG_DIR

# make all the dirs at once:
mkdir -p $PKG_DIR/install
mkdir -p $PKG_DIR/etc/src2pkg
mkdir -p $PKG_DIR/usr/bin
mkdir -p $PKG_DIR/usr/libexec/src2pkg
mkdir -p $PKG_DIR/usr/src/src2pkg/src2pkg
mkdir -p $PKG_DIR/usr/man/man1
mkdir -p $PKG_DIR/usr/doc/$NAME-$VERSION
mkdir -p $PKG_DIR/usr/libexec/src2pkg/lib
mkdir -p $PKG_DIR/usr/libexec/src2pkg/static
chown -R root:root $PKG_DIR
chmod -R 755 $PKG_DIR

cp -a $CWD/Resources/libexec/* $PKG_DIR/usr/libexec/src2pkg
chown root:root $PKG_DIR/usr/libexec/src2pkg/*
chmod 644 $PKG_DIR/usr/libexec/src2pkg/*
# reset these two dirs
chmod 755 $PKG_DIR/usr/libexec/src2pkg/lib
chmod 755 $PKG_DIR/usr/libexec/src2pkg/static

# create a dummy file for libsentry -this ensures that the library is removed by removepkg
echo "dummy" > $PKG_DIR/usr/libexec/src2pkg/lib/libsentry.so
chown root:root $PKG_DIR/usr/libexec/src2pkg/lib/libsentry.so
# set the dummy as non-executable. This serves as a test for src2pkg. When src2pkg
# has been properly setup, libsentry is compiled and replaces this dummy file.
chmod 644 $PKG_DIR/usr/libexec/src2pkg/lib/libsentry.so

# src2pkg
cp -a $CWD/Resources/bin/src2pkg $PKG_DIR/usr/bin

# trackinstall
cp -a $CWD/Resources/bin/trackinstall $PKG_DIR/usr/bin

# disrpm
cp -a $CWD/Resources/bin/disrpm $PKG_DIR/usr/bin

# tracklist can be run by non-root users so place it in /usr/bin
cp -a $CWD/Resources/bin/tracklist $PKG_DIR/usr/bin

# install the libsentry wrapper
cp -a $CWD/Resources/bin/sentry $PKG_DIR/usr/bin

chown root:root $PKG_DIR/usr/bin/*
chmod 755 $PKG_DIR/usr/bin/*

# config files
cp -a $CWD/Resources/etc/* $PKG_DIR/etc/src2pkg
chown root:root $PKG_DIR/etc/src2pkg/*
chmod 644 $PKG_DIR/etc/src2pkg/*

# docs
cp -a $CWD/Resources/doc/* $PKG_DIR/usr/doc/$NAME-$VERSION
chown -R root:root $PKG_DIR/usr/doc/$NAME-$VERSION/*
chmod 644 $PKG_DIR/usr/doc/$NAME-$VERSION/*

# manpage(s)
cp -a $CWD/Resources/man/* $PKG_DIR/usr/man/man1
chown -R root:root $PKG_DIR/usr/man/man1/*
chmod 644 $PKG_DIR/usr/man/man1/*
gzip $PKG_DIR/usr/man/man1/*
chown -R root:root $PKG_DIR/usr/man/man1/*
chmod 644 $PKG_DIR/usr/man/man1/*

# slack-desc and doinst.sh
cp -a $CWD/slack-desc $PKG_DIR/install
cp $CWD/doinst.sh $PKG_DIR/install

# Now add the sources to the package
# libsentry sources
cp -a $CWD/libsentry-$LIBSENTRY_VERSION.tar.bz2 $PKG_DIR/usr/src/src2pkg/src2pkg
# tar sources and patch
cp -a $CWD/tar-$TAR_VERSION.tar.bz2 $PKG_DIR/usr/src/src2pkg/src2pkg
cp -a $CWD/tar-1.13-bzip2.diff $PKG_DIR/usr/src/src2pkg/src2pkg
# now copy the setup script which is run by 'src2pkg --setup'
cp -a $CWD/src2pkg.setup $PKG_DIR/usr/src/src2pkg/src2pkg
chown root:root $PKG_DIR/usr/src/src2pkg/src2pkg/*
chmod 644 $PKG_DIR/usr/src/src2pkg/src2pkg/*
# chmod 755 $PKG_DIR/usr/src/src2pkg/src2pkg/src2pkg.setup
# create a repo skeleton in /usr/src/src2pkg
mkdir -p $PKG_DIR/usr/src/src2pkg/sources
mkdir -p $PKG_DIR/usr/src/src2pkg/packages
mkdir -p $PKG_DIR/usr/src/src2pkg/scripts

# create a dummy of tar-1.13 so it gets removed by removepkg
echo "dummy" >> $PKG_DIR/usr/libexec/src2pkg/static/tar-1.13
chown root:root $PKG_DIR/usr/libexec/src2pkg/static/tar-1.13
chmod 644 $PKG_DIR/usr/libexec/src2pkg/static/tar-1.13

echo "Creating Package..."
cd $PKG_DIR ;

# use our new tar-1.13 so the package is created properly, if tar-1.13 is 
# not available on the system. Other versions may cause problems.
$TAR cvf $NAME-$VERSION-$ARCH-$BUILD.tar .
gzip -9 $NAME-$VERSION-$ARCH-$BUILD.tar
mv $NAME-$VERSION-$ARCH-$BUILD.tar.gz ../$NAME-$VERSION-$ARCH-$BUILD.tgz

echo "Finished Package is located in:" 
echo "$PACKAGE"
echo ""
echo "Use 'installpkg $NAME-$VERSION-$ARCH-$BUILD$SIG.tgz' to install the package."
echo "Then you can use the 'src2pkg' program to build sources and/or generate"
echo "src2pkg scripts for build customization."

if [[ $1 = "--cleanup" ]] ; then
 cd $TEMP_DIR ;
 rm -rf $NAME-$VERSION-$ARCH-$BUILD$SIG
 rm -rf libsentry-$LIBSENTRY_VERSION
 rm -rf tar-$TAR_VERSION
fi