#!/usr/bin/env bash

# TODO:
# - 
# FIXME:
# - PyQt5 from pypi is available only for x86_64

# Cleanup the console
echo -en "\ec"
# Exit on error
set -e
# Enable verbose shell output
set -x
# Allow to use ldconfig under Debian Jessie
export PATH="/sbin:$PATH"

########################################################################
# Create the AppDir
########################################################################

APP="LinuxShowPlayer"
LOWERAPP=${APP,,}

if [ -d $APP/$APP.AppDir/ ]; then
    rm -rf $APP/$APP.AppDir/
fi

mkdir -p $APP/$APP.AppDir/
cd $APP/

########################################################################
# Get Build dependencies (and virtualenv)
########################################################################

sudo apt-get update -qq || true
sudo apt-get -y install build-essential python3-dev libffi-dev libportmidi-dev libasound2-dev \
   libjack-jackd2-dev bison flex libcppunit-dev bison flex uuid-dev libprotobuf-dev protobuf-compiler \
   libprotoc-dev libncurses5-dev autoconf libtool rsync wget python3-pip virtualenv


# If the python3 version is < 3.7
if [ `python3 -c 'import sys; print(sys.version_info.major >= 3 and sys.version_info.minor >= 7)'` = "False" ];
then
    export PYENV_ROOT="$HOME/.pyenv"
    export PATH="$PYENV_ROOT/bin:$PATH"

    # Install and initialize pyenv, if needed
    if ! [ -x "$(command -v pyenv)" ];
    then
        sudo apt-get -y install libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev curl git llvm libncurses5-dev libncursesw5-dev xz-utils
        curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
    fi

    eval "$(pyenv init -)"
    pyenv install -s 3.7.6
    pyenv global 3.7.6
fi

# Install some via pip
pip3 install --user -U protobuf pip setuptools virtualenv

########################################################################
# Source some helper functions
########################################################################

wget "https://github.com/AppImage/pkg2appimage/raw/master/functions.sh"
. ./functions.sh

########################################################################
# Get the last version of the app from GitHub
########################################################################

REPO="FrancescoCeruti/linux-show-player"
if [ -z "$1" ]; then
    VERSION="master"
elif [ "$1" = "latest" ]; then
    VERSION=$(wget -q "https://api.github.com/repos/$REPO/releases/latest"  -O - | grep -E "tag_name" | cut -d'"' -f4)
else
    VERSION="$1"
fi
DLD="https://github.com/$REPO/archive/"$VERSION".tar.gz"
ARCHIVE="linux-show-player-"$VERSION".tar.gz"

# Download in the "$APP" directory
wget $DLD -O $ARCHIVE

########################################################################
# Get the dependencies
########################################################################

# Get OLA
OLA_VERSION="0.10.3"
OLA_FILE="ola-"$OLA_VERSION
wget -nc -c "https://github.com/OpenLightingProject/ola/releases/download/"$OLA_VERSION"/"$OLA_FILE".tar.gz"

# We need to re-compile PyGObject aganist our python version (may become unecessary in future)
# Get PyGObject
apt-get source python3-gi
# To be able to compile it we need to install some build-dependecies
sudo apt-get -y build-dep python3-gi

# Get .deb(s)
mkdir -p debs
cd debs
apt-get download libglib2.0-0 libgstreamer1.0-0 gstreamer1.0-plugins-base libgirepository-1.0-1 \
  gstreamer1.0-plugins-good gstreamer1.0-plugins-ugly gstreamer1.0-plugins-bad gstreamer1.0-alsa \
  gstreamer1.0-pulseaudio gstreamer1.0-libav gstreamer1.0-fluendo-mp3 gir1.2-gstreamer-1.0 \
  gir1.2-gst-plugins-base-1.0 gir1.2-glib-2.0 libportmidi0 alsa-utils libpulse0 libffi6
cd ..

########################################################################
# Create a virtualenv inside the AppDir
########################################################################

PYVERSION=`python3 -V | cut -d' ' -f2 | cut -d'.' -f1,2`
SYS_PYLIB=`python3 -c 'import os; print(os.path.dirname(os.__file__))'`
APP_PYLIB='usr/lib/python'$PYVERSION

cd $APP.AppDir/

# Create the virtualenv in "usr" with python3, coping the files
virtualenv -p python3 --always-copy usr
# Copy all the python stdlib files skipped by virtualenv (why??)
rsync -tr $SYS_PYLIB/* $APP_PYLIB/ --exclude="*-packages/"
# For some reason using "--always-copy" even "python"/"python3" are not linked but copied
# fix that and save ~10MB of space
cd usr/bin
rm python3 python
ln -s python$PYVERSION python
ln -s python$PYVERSION python3
cd ../..

# Create "sitecustomize.py" to load "site-packages"
cat > $APP_PYLIB"/sitecustomize.py" <<EOF
import sys, os
sys.path.append((os.path.join(os.path.dirname(__file__), 'site-packages')))
EOF

# Patch site.py with empty "USER" paths
sed -i -e 's|USER_BASE = None|USER_BASE = ""|g' $APP_PYLIB"/site.py"
sed -i -e 's|USER_SITE = None|USER_SITE = ""|g' $APP_PYLIB"/site.py"

########################################################################
# "Install" the app in the AppDir
########################################################################

# Activate the virtualenv
source usr/bin/activate
# Install the last version of pip & setuptools
pip3 install -U pip setuptools
# Install the application and it's dependencies
pip3 install PyQt5==5.14.1 protobuf ../$ARCHIVE
# Deactivate the virtualenv
deactivate

# Patch absolute paths created by the virtualenv
REPLACE="/home.*/$APP/$APP\.AppDir/usr"
find usr/bin/ -type f -exec grep -Iq . {} \; -and -print0 | xargs -0 sed -i -e 's|'$REPLACE'|././|g'

# Build & Install OLA (only the python client)
cd ..
tar xzf $OLA_FILE".tar.gz"
cd $OLA_FILE
# configure
autoreconf -i
PYTHON=python3 ./configure --enable-python-libs
# generate the protobuf files
make builtfiles
# remove unwanted files
rm python/ola/Makefile.mk || true
rm python/ola/*Test.py || true
rm python/ola/rpc/Makefile.mk || true
rm python/ola/rpc/*Test.py || true
# copy the python client
cp -r python/ola ../$APP.AppDir/$APP_PYLIB/site-packages/
cd ..

# Build & Install PyGObject
cd pygobject-3*
# configure
./configure --disable-cairo --disable-glibtest
# build
make
# "install"
cp -r gi ../$APP.AppDir/$APP_PYLIB/site-packages/
cd ../$APP.AppDir

# Install from deb packages
find ../debs/ -name *deb -exec dpkg -x {} . \;

# Bundle dependencies
set +x
copy_deps
delete_blacklisted
move_lib
set -x

########################################################################
# Workarounds/Patches
########################################################################

# Create libjack.so as a link to libjack.so.0 otherwise ctypes.util.find_libary(name) is not able to find it
# NOTE: this may be necessary for every "find_library(name)" target that should be picked from the AppImage
# NOTE: cffi.dlopen(name) will use "find_library(name)" if name is not a specific libaray name/path
# grep -r --include '*.py' "find_library('" .
# grep -r --include '*.py' "dlopen('" .
cd usr/lib/x86_64-linux-gnu
ln -s libjack.so.0 libjack.so
cd ../../..

# Workaround to set environment variable
mv usr/bin/linux-show-player usr/bin/linux-show-player-origin

cat > usr/bin/linux-show-player <<EOF
#!/bin/sh

# Set GStreamer variables
export GST_PLUGIN_PATH_1_0="././/lib/x86_64-linux-gnu/gstreamer-1.0/"
export GST_PLUGIN_SCANNER_1_0="././/lib/x86_64-linux-gnu/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner"

# Allow GObject-Introspection to work correctly
export GI_TYPELIB_PATH="././/lib/girepository-1.0"

# Invoke the app with the arguments passed
linux-show-player-origin \$@
EOF
chmod +x usr/bin/linux-show-player

# Otherwise in Fedora cannot load the Qt platform plugin "xcb"
cp $(ldconfig -p | grep libEGL.so.1 | cut -d ">" -f 2 | xargs) ./usr/lib/

# move libpulsecommon-<version>.so to the parent directory
mv usr/lib/x86_64-linux-gnu/pulseaudio/* usr/lib/x86_64-linux-gnu/
rm -rf usr/lib/x86_64-linux-gnu/pulseaudio/

# make sure that GI_TYPELIB_PATH point to the right directory (some distro put gir files in different locations)
mv usr/lib/x86_64-linux-gnu/girepository-1.0/* usr/lib/girepository-1.0/ || true
rm -rf usr/lib/x86_64-linux-gnu/girepository-1.0 || true

# Remove some "garbage"
rm -rf ./home || true
rm -rf ./var || true
rm -rf ./etc || true
rm -rf usr/lib/udev/ || true
rm -rf usr/lib/systemd/ || true
rm -rf usr/lib/x86_64-linux-gnu/mesa/ || true
rm -rf usr/lib/x86_64-linux-gnu/mesa-egl/ || true
rm -rf usr/lib/x86_64-linux-gnu/gio/ || true
rm -rf usr/share/alsa || true
rm -rf usr/share/doc || true
rm -rf usr/share/lintian || true
rm -rf usr/share/man || true
rm -rf usr/share/python-wheels || true
rm -rf usr/lib/python-wheels || true
rm -rf usr/share/sounds || true

########################################################################
# Finalize the AppDir
########################################################################

cd ..

# Extract the archive
ARCHIVE_CONT="linux-show-player-content"
mkdir -p $ARCHIVE_CONT
tar zxf $ARCHIVE -C $ARCHIVE_CONT --strip-components 1

# Copy icons/mime
MIME_DIR="$APP.AppDir/usr/share/mime"
DESKTOP_DIR="$APP.AppDir/usr/share/applications"
ICONS_DIR="$APP.AppDir/usr/share/icons/default/512x512/apps"
MIME_ICONS_DIR="$APP.AppDir/usr/share/icons/default/512x512/mimetypes"

mkdir -p $MIME_DIR
mkdir -p $ICONS_DIR
mkdir -p $DESKTOP_DIR
mkdir -p $MIME_ICONS_DIR

cp $ARCHIVE_CONT/dist/linuxshowplayer.xml $MIME_DIR
cp $ARCHIVE_CONT/dist/linuxshowplayer.png $ICONS_DIR
cp $ARCHIVE_CONT/dist/linuxshowplayer.desktop $DESKTOP_DIR
cp $ARCHIVE_CONT/dist/application-x-linuxshowplayer.png $MIME_ICONS_DIR

cd $APP.AppDir/

# Apprun & desktop-integration
get_apprun

get_icon
get_desktop
get_desktopintegration $LOWERAPP

########################################################################
# Package the AppDir as an AppImage
########################################################################

# At this point, you should be able to run the application by executing
# ./AppRun

cd ..

generate_type2_appimage

# To check libraries opened from the base system
#strace -e open -f ./AppRun 2>&1 | grep '("/usr/lib/' | grep so