#!/bin/bash

# Enter a CentOS 6 chroot (you could use other methods)
# git clone https://github.com/probonopd/AppImageKit.git
# ./AppImageKit/build.sh 
# sudo ./AppImageKit/AppImageAssistant.AppDir/testappimage /isodevice/boot/iso/CentOS-6.5-x86_64-LiveCD.iso bash

# Halt on errors
set -e

# Be verbose
set -x

# Now we are inside CentOS 6
grep -r "CentOS release 6" /etc/redhat-release || exit 1

# qjsonparser, used to add metadata to the plugins needs to work in a en_US.UTF-8 environment. That's
# not always set correctly in CentOS 6.7
export LC_ALL=en_US.UTF-8
export LANG=en_us.UTF-8

# Determine which architecture should be built
if [[ "$(arch)" = "i686" || "$(arch)" = "x86_64" ]] ; then
  ARCH=$(arch)
else
  echo "Architecture could not be determined"
  exit 1
fi

# if the library path doesn't point to our usr/lib, linking will be broken and we won't find all deps either
export LD_LIBRARY_PATH=/usr/lib64/:/usr/lib:/krita.appdir/usr/lib

git_pull_rebase_helper()
{
	git reset --hard HEAD
        git pull
}

if [ -z "$NO_DOWNLOAD" ] ; then
yum -y install epel-release 
# we need to be up to date in order to install the xcb-keysyms dependency
yum -y update
# base dependencies
yum -y install wget tar bzip2 git libtool which fuse fuse-devel libpng-devel automake libtool mesa-libEGL cppunit-devel cmake glibc-headers libstdc++-devel gcc-c++ freetype-devel fontconfig-devel libxml2-devel libstdc++-devel libXrender-devel patch xcb-util-keysyms-devel libXi-devel

# Newer compiler than what comes with CentOS 6
wget http://people.centos.org/tru/devtools-2/devtools-2.repo -O /etc/yum.repos.d/devtools-2.repo
yum -y install devtoolset-2-gcc devtoolset-2-gcc-c++ devtoolset-2-binutils

# Make sure we build from the /, parts of this script depends on that. We also need to run as root...
cd  /

# Build AppImageKit
if [ ! -d AppImageKit ] ; then
  git clone  --depth 1 https://github.com/probonopd/AppImageKit.git /AppImageKit
fi

cd /AppImageKit/
git_pull_rebase_helper
./build.sh
cd /
fi # [ -z "$NO_DOWNLOAD" ]


# Workaround for:
# /usr/lib/librevenge-stream-0.0.so: undefined reference to `std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)'
# Use the new compiler
. /opt/rh/devtoolset-2/enable


# Workaround for: On CentOS 6, .pc files in /usr/lib/pkgconfig are not recognized
# However, this is where .pc files get installed when bulding libraries... (FIXME)
# I found this by comparing the output of librevenge's "make install" command
# between Ubuntu and CentOS 6
ln -sf /usr/share/pkgconfig /usr/lib/pkgconfig


# A krita build layout looks like this:
# krita/ -- the source directory
# krita/3rdparty -- the cmake definitions for the dependencies
# d -- downloads of the dependencies from files.kde.org
# b -- build directory for the dependencies
# krita_build -- build directory for krita itself
# krita.appdir -- install directory for krita and the dependencies

# Get Krita
if [ ! -d /krita ] ; then
	git clone  --depth 1 https://github.com/KDE/krita.git /krita
fi

cd /krita/
git_pull_rebase_helper

# Create the build dir for the 3rdparty deps
if [ ! -d /b ] ; then
    mkdir /b
fi    
if [ ! -d /d ] ; then
    mkdir /d
fi

# Prepare the install location
rm -rf /krita.appdir/ || true
mkdir -p /krita.appdir/usr

# make sure lib and lib64 are the same thing
mkdir -p /krita.appdir/usr/lib
cd  /krita.appdir/usr
ln -s lib lib64

# start building the deps
cd /b
rm -rf /b/* || true

cmake /krita/3rdparty \
    -DCMAKE_INSTALL_PREFIX:PATH=/usr \
    -DINSTALL_ROOT=/usr \
    -DEXTERNALS_DOWNLOAD_DIR=/d
    
cmake --build . --config Release --target ext_qt
cmake --build . --config Release --target ext_boost
cmake --build . --config Release --target ext_eigen3
cmake --build . --config Release --target ext_exiv2
cmake --build . --config Release --target ext_fftw3
cmake --build . --config Release --target ext_lcms2
cmake --build . --config Release --target ext_ocio
cmake --build . --config Release --target ext_openexr
cmake --build . --config Release --target ext_vc
#cmake --build . --config Release --target ext_png
cmake --build . --config Release --target ext_tiff
cmake --build . --config Release --target ext_jpeg
cmake --build . --config Release --target ext_libraw
# XXX: this builds, but cmake never manages to find the library
#cmake --build . --config Release --target ext_openjpeg
cmake --build . --config Release --target ext_kcrash
# XXX: this builds, but pulls in ext_png, which leads to big conflicts
#cmake --build . --config Release --target ext_poppler
cmake --build . --config Release --target ext_gsl
    
cd ..
mkdir /krita_build
cd /krita_build
cmake ../krita \
    -DCMAKE_INSTALL_PREFIX:PATH=/krita.appdir/usr \
    -DDEFINE_NO_DEPRECATED=1 \
    -DCMAKE_BUILD_TYPE=Release \
    -DPACKAGERS_BUILD=1 \
    -DBUILD_TESTING=FALSE \
    -DKDE4_BUILD_TESTS=FALSE \
    -DHAVE_MEMORY_LEAK_TRACKER=FALSE
    
# Install into the AppDir
make -j4 install

cd /krita.appdir

# FIXME: How to find out which subset of plugins is really needed? I used strace when running the binary
mkdir -p ./usr/lib/qt5/plugins/

if [ -e $(dirname /usr/li*/qt5/plugins/bearer) ] ; then
  PLUGINS=$(dirname /usr/li*/qt5/plugins/bearer)
else
  PLUGINS=../../5.5/gc*/plugins/
fi
echo $PLUGINS # /usr/lib64/qt5/plugins if build system Qt is found
cp -r $PLUGINS/bearer ./usr/lib/qt5/plugins/
cp -r $PLUGINS/generic ./usr/lib/qt5/plugins/
cp -r $PLUGINS/imageformats ./usr/lib/qt5/plugins/
cp -r $PLUGINS/platforms ./usr/lib/qt5/plugins/
cp -r $PLUGINS/iconengines ./usr/lib/qt5/plugins/
cp -r $PLUGINS/platforminputcontexts ./usr/lib/qt5/plugins/
cp -r $PLUGINS/platformthemes ./usr/lib/qt5/plugins/
cp -r $PLUGINS/xcbglintegrations ./usr/lib/qt5/plugins/

cp $(ldconfig -p | grep libsasl2.so.2 | cut -d ">" -f 2 | xargs) ./usr/lib/
cp $(ldconfig -p | grep libGL.so.1 | cut -d ">" -f 2 | xargs) ./usr/lib/ # otherwise segfaults!?
cp $(ldconfig -p | grep libGLU.so.1 | cut -d ">" -f 2 | xargs) ./usr/lib/ # otherwise segfaults!?
# Fedora 23 seemed to be missing SOMETHING from the Centos 6.7. The only message was:
# This application failed to start because it could not find or load the Qt platform plugin "xcb".
# Setting export QT_DEBUG_PLUGINS=1 revealed the cause.
# QLibraryPrivate::loadPlugin failed on "/usr/lib64/qt5/plugins/platforms/libqxcb.so" : 
# "Cannot load library /usr/lib64/qt5/plugins/platforms/libqxcb.so: (/lib64/libEGL.so.1: undefined symbol: drmGetNodeTypeFromFd)"
# Which means that we have to copy libEGL.so.1 in too
cp $(ldconfig -p | grep libEGL.so.1 | cut -d ">" -f 2 | xargs) ./usr/lib/ # Otherwise F23 cannot load the Qt platform plugin "xcb"
# let's not copy xcb itself? https://bugs.kde.org/show_bug.cgi?id=360552
#cp $(ldconfig -p | grep libxcb.so.1 | cut -d ">" -f 2 | xargs) ./usr/lib/ 
cp $(ldconfig -p | grep libfreetype.so.6 | cut -d ">" -f 2 | xargs) ./usr/lib/ # For Fedora 20

ldd usr/bin/krita | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' ./usr/lib || true
#ldd usr/lib64/krita/*.so  | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' ./usr/lib || true
#ldd usr/lib64/plugins/imageformats/*.so  | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' ./usr/lib || true

ldd usr/lib/qt5/plugins/platforms/libqxcb.so | grep "=>" | awk '{print $3}'  |  xargs -I '{}' cp -v '{}' ./usr/lib || true

# Copy in the indirect dependencies
FILES=$(find . -type f -executable)

for FILE in $FILES ; do
	ldd "${FILE}" | grep "=>" | awk '{print $3}' | xargs -I '{}' cp -v '{}' usr/lib || true
done

#DEPS=""
#for FILE in $FILES ; do
#  ldd "${FILE}" | grep "=>" | awk '{print $3}' | xargs -I '{}' echo '{}' > DEPSFILE
#done
#DEPS=$(cat DEPSFILE  |sort | uniq)
#for FILE in $DEPS ; do
#  if [ -f $FILE ] ; then
#    echo $FILE
#    cp --parents -rfL $FILE ./
#  fi
#done
#rm -f DEPSFILE


# The following are assumed to be part of the base system
rm -f usr/lib/libcom_err.so.2 || true
rm -f usr/lib/libcrypt.so.1 || true
rm -f usr/lib/libdl.so.2 || true
rm -f usr/lib/libexpat.so.1 || true
#rm -f usr/lib/libfontconfig.so.1 || true
rm -f usr/lib/libgcc_s.so.1 || true
rm -f usr/lib/libglib-2.0.so.0 || true
rm -f usr/lib/libgpg-error.so.0 || true
rm -f usr/lib/libgssapi_krb5.so.2 || true
rm -f usr/lib/libgssapi.so.3 || true
rm -f usr/lib/libhcrypto.so.4 || true
rm -f usr/lib/libheimbase.so.1 || true
rm -f usr/lib/libheimntlm.so.0 || true
rm -f usr/lib/libhx509.so.5 || true
rm -f usr/lib/libICE.so.6 || true
rm -f usr/lib/libidn.so.11 || true
rm -f usr/lib/libk5crypto.so.3 || true
rm -f usr/lib/libkeyutils.so.1 || true
rm -f usr/lib/libkrb5.so.26 || true
rm -f usr/lib/libkrb5.so.3 || true
rm -f usr/lib/libkrb5support.so.0 || true
# rm -f usr/lib/liblber-2.4.so.2 || true # needed for debian wheezy
# rm -f usr/lib/libldap_r-2.4.so.2 || true # needed for debian wheezy
rm -f usr/lib/libm.so.6 || true
rm -f usr/lib/libp11-kit.so.0 || true
rm -f usr/lib/libpcre.so.3 || true
rm -f usr/lib/libpthread.so.0 || true
rm -f usr/lib/libresolv.so.2 || true
rm -f usr/lib/libroken.so.18 || true
rm -f usr/lib/librt.so.1 || true
rm -f usr/lib/libsasl2.so.2 || true
rm -f usr/lib/libSM.so.6 || true
rm -f usr/lib/libusb-1.0.so.0 || true
rm -f usr/lib/libuuid.so.1 || true
rm -f usr/lib/libwind.so.0 || true

# Remove these libraries, we need to use the system versions; this means 11.04 is not supported (12.04 is our baseline)
rm -f usr/lib/libGL.so.* || true
rm -f usr/lib/libdrm.so.* || true

#rm -f usr/lib/libz.so.1 || true

# These seem to be available on most systems but not Ubuntu 11.04
# rm -f usr/lib/libffi.so.6 usr/lib/libGL.so.1 usr/lib/libglapi.so.0 usr/lib/libxcb.so.1 usr/lib/libxcb-glx.so.0 || true
rm -f usr/lib/libxcb.so.1

# Delete potentially dangerous libraries
rm -f usr/lib/libstdc* usr/lib/libgobject* usr/lib/libc.so.* || true
# Do NOT delete libX* because otherwise on Ubuntu 11.04:
# loaded library "Xcursor" malloc.c:3096: sYSMALLOc: Assertion (...) Aborted

# We don't bundle the developer stuff
rm -rf usr/include || true
rm -rf usr/lib/cmake || true
rm -rf usr/lib/pkgconfig || true
rm -rf usr/share/ECM/ || true
rm -rf usr/share/gettext || true
rm -rf usr/share/pkgconfig || true

strip usr/lib/kritaplugins/* usr/bin/* usr/lib/* || true

# Since we set /krita.appdir as the prefix, we need to patch it away too (FIXME)
# Probably it would be better to use /app as a prefix because it has the same length for all apps
cd usr/ ; find . -type f -exec sed -i -e 's|/krita.appdir/usr/|./././././././././|g' {} \; ; cd  ..

# On openSUSE Qt is picking up the wrong libqxcb.so
# (the one from the system when in fact it should use the bundled one) - is this a Qt bug?
# Also, Krita has a hardcoded /usr which we patch away
cd usr/ ; find . -type f -exec sed -i -e 's|/usr|././|g' {} \; ; cd ..

# We do not bundle this, so let's not search that inside the AppImage. 
# Fixes "Qt: Failed to create XKB context!" and lets us enter text
sed -i -e 's|././/share/X11/|/usr/share/X11/|g' ./usr/lib/qt5/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so
sed -i -e 's|././/share/X11/|/usr/share/X11/|g' ./usr/lib/libQt5XcbQpa.so.5

# Workaround for:
# D-Bus library appears to be incorrectly set up;
# failed to read machine uuid: Failed to open
# The file is more commonly in /etc/machine-id
# sed -i -e 's|/var/lib/dbus/machine-id|//././././etc/machine-id|g' ./usr/lib/libdbus-1.so.3
# or
rm -f ./usr/lib/libdbus-1.so.3 || true

cp ../AppImageKit/AppRun .
cp ./usr/share/applications/krita.desktop krita.desktop
cp /krita/krita/pics/app/64-apps-calligrakrita.png calligrakrita.png


# replace krita with the lib-checking startup script.
#cd /krita.appdir/usr/bin
#mv krita krita.real
#wget https://raw.githubusercontent.com/boudewijnrempt/AppImages/master/recipes/krita/krita
#chmod a+rx krita
cd / 

APP=krita

VER=$(grep "#define CALLIGRA_VERSION_STRING" krita_build/libs/version/calligraversion.h | cut -d '"' -f 2)
cd krita
BRANCH=$( git branch | cut -d ' ' -f 2)
REVISION=$(git rev-parse --short HEAD)
cd ..
VERSION=$VER-$BRANCH-$REVISION
VERSION="$(sed s/\ /-/g <<<$VERSION)"
echo $VERSION

if [[ "$ARCH" = "x86_64" ]] ; then
	APPIMAGE=$APP"-"$VERSION"-x86_64.appimage"
fi
if [[ "$ARCH" = "i686" ]] ; then
	APPIMAGE=$APP"-"$VERSION"-i386.appimage"
fi
echo $APPIMAGE

mkdir -p /out

rm -f /out/*.AppImage || true
AppImageKit/AppImageAssistant.AppDir/package /krita.appdir/ /out/$APPIMAGE

chmod a+rwx /out/$APPIMAGE # So that we can edit the AppImage outside of the Docker container

# make the zipfile version
mv /krita.appdir/AppRun /krita.appdir/krita
cd /
chmod a+x /krita.appdir/krita
zip -r out/$APP"-"$VERSION"-x86_64.zip krita.appdir

# Test the resulting AppImage on my local system
# sudo /tmp/*/union/AppImageKit/AppImageAssistant.AppDir/testappimage /isodevice/boot/iso/Fedora-Live-Workstation-x86_64-22-3.iso /tmp/*/union/Scribus.AppDir/