compile

#!/usr/bin/env bash
# bin/compile <build-dir> <cache-dir>

# fail fast
set -e

# debug
# set -x

# parse and derive params
BUILD_DIR=$1
CACHE_DIR=$2
APT_DIR=$BUILD_DIR/.apt
LP_DIR=`cd $(dirname $0); cd ..; pwd`

function error() {
  echo " !     $*" >&2
  exit 1
}

function topic() {
  echo "-----> $*"
}

function indent() {
  c='s/^/       /'
  case $(uname) in
    Darwin) sed -l "$c";;
    *)      sed -u "$c";;
  esac
}
# SCINOTE: Packages to be installed via apt-get, separated with whitespace
packages="libfile-basedir-perl libfile-mimeinfo-perl libsm6 libice6 libxinerama1 libdbus-glib-1-2 libharfbuzz0b libharfbuzz-icu0 libx11-xcb1 poppler-utils librsvg2-2 libvips42"

APT_CACHE_DIR="$CACHE_DIR/apt/cache"
APT_STATE_DIR="$CACHE_DIR/apt/state"

mkdir -p "$APT_CACHE_DIR/archives/partial"
mkdir -p "$APT_STATE_DIR/lists/partial"

APT_OPTIONS="-o debug::nolocking=true -o dir::cache=$APT_CACHE_DIR -o dir::state=$APT_STATE_DIR"

topic "Updating apt caches"
apt-get $APT_OPTIONS update | indent

for PACKAGE in $packages
do
  if [[ $PACKAGE == *deb ]]; then
    PACKAGE_NAME=$(basename $PACKAGE .deb)
    PACKAGE_FILE=$APT_CACHE_DIR/archives/$PACKAGE_NAME.deb

    topic "Fetching $PACKAGE"
    curl -s -L -z $PACKAGE_FILE -o $PACKAGE_FILE $PACKAGE 2>&1 | indent
  else
    topic "Fetching .debs for $PACKAGE"
    apt-get $APT_OPTIONS -y --force-yes -d install --no-install-recommends --reinstall $PACKAGE | indent
  fi
done

mkdir -p $APT_DIR

for DEB in $(ls -1 $APT_CACHE_DIR/archives/*.deb); do
  topic "Installing $(basename $DEB)"
  dpkg -x $DEB $BUILD_DIR/.apt/
done

# Required for ruby-vips
ln -s /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 $BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu/libglib-2.0.so
ln -s /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 $BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu/libgobject-2.0.so
ln -s /app/.apt/usr/lib/x86_64-linux-gnu/libvips.so.42 $BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu/libvips.so

# SCINOTE: Add any additional environmental variables here (twice!)
topic "Writing profile script"
mkdir -p $BUILD_DIR/.profile.d
cat <<EOF >$BUILD_DIR/.profile.d/000_apt.sh
export PATH="\$HOME/.apt/usr/bin:\$PATH"
export LD_LIBRARY_PATH="\$HOME/.apt/usr/lib/x86_64-linux-gnu:\$HOME/.apt/usr/lib/i386-linux-gnu:\$HOME/.apt/usr/lib:\$LD_LIBRARY_PATH"
export LIBRARY_PATH="\$HOME/.apt/usr/lib/x86_64-linux-gnu:\$HOME/.apt/usr/lib/i386-linux-gnu:\$HOME/.apt/usr/lib:\$LIBRARY_PATH"
export INCLUDE_PATH="\$HOME/.apt/usr/include:\$INCLUDE_PATH"
export CPATH="\$INCLUDE_PATH"
export CPPPATH="\$INCLUDE_PATH"
export PKG_CONFIG_PATH="\$HOME/.apt/usr/lib/x86_64-linux-gnu/pkgconfig:\$HOME/.apt/usr/lib/i386-linux-gnu/pkgconfig:\$HOME/.apt/usr/lib/pkgconfig:\$PKG_CONFIG_PATH"
export PERL5LIB="/app/.apt/usr/share/perl5"
EOF

export PATH="$BUILD_DIR/.apt/usr/bin:$PATH"
export LD_LIBRARY_PATH="$BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu:$BUILD_DIR/.apt/usr/lib/i386-linux-gnu:$BUILD_DIR/.apt/usr/lib:$LD_LIBRARY_PATH"
export LIBRARY_PATH="$BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu:$BUILD_DIR/.apt/usr/lib/i386-linux-gnu:$BUILD_DIR/.apt/usr/lib:$LIBRARY_PATH"
export INCLUDE_PATH="$BUILD_DIR/.apt/usr/include:$INCLUDE_PATH"
export CPATH="$INCLUDE_PATH"
export CPPPATH="$INCLUDE_PATH"
export PKG_CONFIG_PATH="$BUILD_DIR/.apt/usr/lib/x86_64-linux-gnu/pkgconfig:$BUILD_DIR/.apt/usr/lib/i386-linux-gnu/pkgconfig:$BUILD_DIR/.apt/usr/lib/pkgconfig:$PKG_CONFIG_PATH"
export PERL5LIB="/app/.apt/usr/share/perl5"

#give environment to later buildpacks
export | grep -E -e '(PATH|LD_LIBRARY_PATH|LIBRARY_PATH|INCLUDE_PATH|CPATH|CPPPATH|PKG_CONFIG_PATH|OFFICE_PATH)='  > "$LP_DIR/export"