#!/bin/bash
set -x -e

CWD=$(pwd)

PRGNAM=$(basename "$CWD")
ARCH=$(uname -m)
GITHUB_REPO=crystal-lang/crystal
VERSION=${VERSION:-latest}
REPOSITORY=${REPOSITORY:-/var/cache/SlackBuilds.gwh/$PRGNAM}

BUILD=1
TAG=gwh
OUTPUT=/tmp
TMP=/tmp/$TAG
PKG=$TMP/pkg-$PRGNAM
PREFIX=/usr

# cleaning
rm -fr "$PKG" "${TMP:?}/$PRGNAM/"
mkdir -p $TMP/

# mise en place
[ ! -e "$REPOSITORY" ] && git clone https://github.com/${GITHUB_REPO} "$REPOSITORY"
cd "$REPOSITORY" || exit
git pull --all

cp -R "$REPOSITORY" $TMP/
cd "$TMP/$PRGNAM/" || exit

[ "$VERSION" == "latest" ] && VERSION=$(git tag --sort=-version:refname | head -n1)
[ "$VERSION" == "" ] && VERSION=trunk
if [ "$VERSION" == "trunk" ]; then
    VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
else
    git checkout "$VERSION"
fi

make -j"$(nproc)" interpreter=1 release=1

# installation
make install PREFIX=$PREFIX MANDIR="$PKG$PREFIX/man" LIBDIR="$PKG$PREFIX/lib$(uname -m | grep -o 64)" DESTDIR="$PKG"

[ -d "$PKG/usr/man" ] && find "$PKG/usr/man" -type f -name "*.?" -exec gzip -9f {} \;

 ########
# shards #
 ########
SHARDS_PRGNAM=shards
SHARDS_GITHUB_REPO=crystal-lang/shards
SHARDS_VERSION=${SHARDS_VERSION:-$(curl -s https://api.github.com/repos/${SHARDS_GITHUB_REPO}/releases/latest | jq -r .tag_name | sed 's|^null$|trunk|')} # or VERSION=trunk
SHARDS_REPOSITORY=${SHARDS_REPOSITORY:-/var/cache/SlackBuilds.gwh/$SHARDS_PRGNAM}
SHARDS_PKG=$TMP/pkg-$SHARDS_PRGNAM

# cleaning
rm -fr "$SHARDS_PKG" "${TMP:?}/$SHARDS_PRGNAM/"

# mise en place
[ ! -e "$SHARDS_REPOSITORY" ] && git clone https://github.com/${SHARDS_GITHUB_REPO} "$SHARDS_REPOSITORY"
cd "$SHARDS_REPOSITORY" || exit
git pull --all

cp -R "$SHARDS_REPOSITORY" "$TMP/"
cd $TMP/$SHARDS_PRGNAM/

[ "$SHARDS_VERSION" == "latest" ] && SHARDS_VERSION=$(git tag --sort=-version:refname | head -n1)
[ "$SHARDS_VERSION" == "" ] && SHARDS_VERSION=trunk
if [ "$SHARDS_VERSION" == "trunk" ]; then
    SHARDS_VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
else
    git checkout "$SHARDS_VERSION"
fi

make -j"$(nproc)" release=1

# installation
make install PREFIX=$PREFIX MANDIR=$SHARDS_PKG$PREFIX/man LIBDIR="$SHARDS_PKG$PREFIX/lib$(uname -m | grep -o 64)" DESTDIR=$SHARDS_PKG

[ -d $SHARDS_PKG/usr/man ] && find $SHARDS_PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;

 ################
# merge both PKG #
 ################

cp -R $SHARDS_PKG/* "$PKG"

# packaging
cd "$PKG" || exit
mkdir install
cat <<EOF > install/slack-desc
$PRGNAM: $PRGNAM (The Crystal Programming Language)
$PRGNAM:
$PRGNAM: Crystal is a programming language with the following goals:
$PRGNAM: .Have the same syntax as Ruby, or at least as similar as possible.
$PRGNAM: .Statically type-checked but without having to specify the type of variables or
$PRGNAM:    method arguments.
$PRGNAM: .Be able to call C code by writing bindings to it in Crystal.
$PRGNAM: .Have compile-time evaluation and generation of code, to avoid boilerplate code.
$PRGNAM: .Compile to efficient native code.
$PRGNAM:
$PRGNAM: http://crystal-lang.org/
EOF

rm -f "$PKG/{,usr/}lib$(uname -m | grep -o 64)/*.la"
/sbin/makepkg --linkadd y --chown n --prepend "$OUTPUT/$PRGNAM-${VERSION}_${SHARDS_VERSION}-$ARCH-$BUILD$TAG.txz"