#!/bin/bash
set -x

CWD=$(pwd)

PRGNAM=$(basename "$CWD")

BUILD=1
GITHUB_REPO=c3d/db48x
VERSION=${VERSION:-latest}

ARCH=$(uname -m)

TAG=gwh
OUTPUT=/tmp
TMP=/tmp/$TAG
PKG=$TMP/pkg-$PRGNAM

REPOSITORY=/var/cache/SlackBuilds.gwh/$PRGNAM

PREFIX=/usr

mkdir -p $TMP

# Cleaning
rm -fr "${TMP:?}"/"$PRGNAM" "$PKG"

# Fetching sources
[ ! -e "$REPOSITORY" ] && git clone --recursive https://github.com/${GITHUB_REPO}.git "$REPOSITORY"
cd "$REPOSITORY" || exit 1
git pull --all

cp -R "$REPOSITORY" $TMP/"$PRGNAM"

# Preparation
cd $TMP/"$PRGNAM" || exit 1

[ "$VERSION" == "latest" ] && VERSION=$(git describe --tags --abbrev=0)
[ "$VERSION" == "" ] && VERSION=trunk
if [ "$VERSION" == "trunk" ]; then
    VERSION="git_r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
else
    git checkout "$VERSION"
fi

git submodule update --init

chown -R root:root .
find . \
     \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
     -exec chmod 755 {} \; -o \
     \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
     -exec chmod 644 {} \;

# Building
sed -i 's| qmake| qmake6|g' $(grep -l " qmake" ./* -r)

make sim

# Installation
mkdir -p "$PKG"/usr/bin/
cp ./sim/db48x "$PKG"/usr/bin/

mkdir -p "$PKG"/usr/doc/"$PRGNAM"
cp -R AUTHORS ./*.txt ./*.md doc/ "$PKG"/usr/doc/"$PRGNAM"

# Cleaning
cd "$PKG" || exit 1
find -0 . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
find -0 . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

cd "$PKG" || exit 1

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

chown -R root:root .
find . \
     \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
     -exec chmod 755 {} \; -o \
     \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
     -exec chmod 644 {} \;

# Packaging
mkdir install
cat <<EOF > install/slack-desc
$PRGNAM: $PRGNAM (RPL runtime for the DM42 calculator, in the spirit of HP48/49/50)
$PRGNAM:
$PRGNAM: The DB48X project intends to rebuild and improve the user experience of the HP48
$PRGNAM: family of calculators, notably their "Reverse Polish Lisp" (RPL) language with
$PRGNAM: its rich set of data types and built-in functions, and Lisp-level programming
$PRGNAM: power.
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://github.com/${GITHUB_REPO}
EOF

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