#!/bin/bash

# variables
TAG=gwh
TMP=/tmp/$TAG
CWD=$(pwd)
OUTPUT=/tmp

PRGNAM=$(basename "$CWD")
GITHUB_REPO=kovidgoyal/kitty
VERSION=${VERSION:-latest}

ARCH=$(uname -m)
BUILD=2

PKG=$TMP/pkg-$PRGNAM

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

LIBDIRSUFFIX=$(uname -m | grep -o 64)

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

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

mkdir -p "$PKG"

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

cp -R "$REPOSITORY" "$TMP"/"$PRGNAM"
cd "$TMP"/"$PRGNAM"/ || exit 1
[ "$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

# installation
mkdir -p "$PKG"/

# sed surgery: setup.py allows overriding the compiler flags, but
# puts a -O3 *after* whatever we set them to. All our SLKCFLAGS
# choices have -O2.
sed -i 's,-O3,-O2,g' setup.py

OVERRIDE_CPPFLAGS="$SLKCFLAGS -Wl,-s" \
                 OVERRIDE_CFLAGS="$SLKCFLAGS -Wl,-s" \
                 python3 setup.py \
                 --libdir-name "lib$LIBDIRSUFFIX" \
                 --verbose linux-package \
                 --ignore-compiler-warnings

mkdir -p "$PKG"/usr/bin "$PKG"/usr/share "$PKG/usr/lib$LIBDIRSUFFIX"
cp -a linux-package/bin/* "$PKG"/usr/bin
cp -a linux-package/share/* "$PKG"/usr/share
cp -a linux-package/lib*/* "$PKG/usr/lib$LIBDIRSUFFIX"
strip "$PKG"/usr/bin/"$PRGNAM"

mkdir -p "$PKG$PREFIX"/share/bash-completion/completions
cp extra/completions/alacritty.bash "$PKG$PREFIX"/share/bash-completion/completions/alacritty

mkdir -p "$PKG$PREFIX"/share/zsh/site-functions
cp "$PKG/usr/lib$LIBDIRSUFFIX"/kitty/shell-integration/zsh/completions/_kitty "$PKG$PREFIX"/share/zsh/site-functions/

mkdir -p "$PKG"/usr/doc/"$PRGNAM"
cp -R ./*.md ./*.rst LICENSE "$PKG"/usr/doc/"$PRGNAM"

# correction
cd "$PKG" || exit 1
chown -R root:root ./*

# embaumement
mkdir -p "$PKG"/install

cat <<EOF > "$PKG"/install/slack-desc
$PRGNAM: $PRGNAM (The fast, feature-rich, GPU based terminal emulator)
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://sw.kovidgoyal.net/kitty/
$PRGNAM:
EOF

# empaquetage
cd "$PKG" || exit 1
rm -f "$PKG"/{,usr/}lib"$LIBDIRSUFFIX"/*.la
/sbin/makepkg --linkadd y --chown n --prepend "$OUTPUT/$PRGNAM-${VERSION//-//}-$ARCH-$BUILD$TAG.txz"