#!/bin/bash

# variables
GITHUB_REPO=labwc/labwc
VERSION=${VERSION:-"latest"}
BUILD=12

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

PRGNAM=$(basename "$CWD")
PKG=$TMP/pkg-$PRGNAM

ARCH=$(uname -m)

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

PREFIX=/usr
MESONFLAGS=""

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

mkdir -p "$PKG"

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

cp -R "$REPOSITORY" $TMP/

cd "$TMP/$PRGNAM/" || exit 1
case $VERSION in
    trunk)
        # PKGVERSION="git_r$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)"
        PKGVERSION="r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
        ;;
    latest)
        PKGVERSION=$(git tag --sort=-version:refname | head -n1)
        git checkout "$PKGVERSION"
        ;;
    *)
        PKGVERSION=$VERSION
        MESONFLAGS="-Dc_args=\"-Wno-error=switch\""
        git checkout "$PKGVERSION"
        ;;
esac
PKGNAM=${PRGNAM}

######################
# EMBED DEPENDENCIES #
######################
# # wlroots
# EMBED_WLROOTS=${EMBED_WLROOTS:-"yes"}
# if [ "$EMBED_WLROOTS" = "yes" ]; then
#     WLROOTS_VERSION=${WLROOTS_VERSION:-$VERSION}
#     WLROOTS_REPOSITORY=/var/cache/SlackBuilds.gwh/wlroots
#     [ ! -e "$WLROOTS_REPOSITORY" ] && git clone https://gitlab.freedesktop.org/wlroots/wlroots.git "$WLROOTS_REPOSITORY"
#     cd "$WLROOTS_REPOSITORY" || exit 1
#     git reset --hard HEAD
#     git pull --all

#     mkdir -p "$TMP/$PRGNAM"/subprojects/
#     cp -a "$WLROOTS_REPOSITORY" "$TMP/$PRGNAM"/subprojects/wlroots
#     cd "$TMP/$PRGNAM"/subprojects/wlroots || exit 1
#     case $WLROOTS_VERSION in
#         trunk)
#             # WLROOTS_VERSION="git_r$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)"
#             WLROOTS_VERSION="r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
#             ;;
#         latest)
#             WLROOTS_VERSION=$(git tag --sort=-version:refname | head -n1)
#             git checkout "$WLROOTS_VERSION"
#             ;;
#         *)
#             git checkout "$WLROOTS_VERSION"
#             ;;
#     esac
#     PKGNAM="${PKGNAM}+wlroots"
#     PKGVERSION="${PKGVERSION}+${WLROOTS_VERSION}"
# fi

# libliftoff
EMBED_LIBLIFTOFF=${EMBED_LIBLIFTOFF:-"yes"}
if [ "$EMBED_LIBLIFTOFF" = "yes" ]; then
    LIBLIFTOFF_VERSION=${LIBLIFTOFF_VERSION:-$VERSION}
    LIBLIFTOFF_REPOSITORY=/var/cache/SlackBuilds.gwh/libliftoff
    [ ! -e "$LIBLIFTOFF_REPOSITORY" ] && git clone https://gitlab.freedesktop.org/emersion/libliftoff.git "$LIBLIFTOFF_REPOSITORY"
    cd "$LIBLIFTOFF_REPOSITORY" || exit 1
    git reset --hard HEAD
    git pull --all

    mkdir -p "$TMP/$PRGNAM"/subprojects/
    cp -a "$LIBLIFTOFF_REPOSITORY" "$TMP/$PRGNAM"/subprojects/libliftoff
    cd "$TMP/$PRGNAM"/subprojects/libliftoff || exit 1
    case $LIBLIFTOFF_VERSION in
        trunk)
            # LIBLIFTOFF_VERSION="git_r$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)"
            LIBLIFTOFF_VERSION="r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
            ;;
        latest)
            LIBLIFTOFF_VERSION=$(git tag --sort=-version:refname | head -n1)
            git checkout "$LIBLIFTOFF_VERSION"
            ;;
        *)
            git checkout "$LIBLIFTOFF_VERSION"
            ;;
    esac
    PKGNAM="${PKGNAM}+libliftoff"
    PKGVERSION="${PKGVERSION}+${LIBLIFTOFF_VERSION}"
fi

# libdisplay-info
EMBED_LIBDISPLAYINFO=${EMBED_LIBDISPLAYINFO:-"yes"}
if [ "$EMBED_LIBDISPLAYINFO" = "yes" ]; then
    LIBDISPLAYINFO_VERSION=${LIBDISPLAYINFO_VERSION:-$VERSION}
    LIBDISPLAYINFO_REPOSITORY=/var/cache/SlackBuilds.gwh/libdisplay-info
    [ ! -e "$LIBDISPLAYINFO_REPOSITORY" ] && git clone https://gitlab.freedesktop.org/emersion/libdisplay-info.git "$LIBDISPLAYINFO_REPOSITORY"
    cd "$LIBDISPLAYINFO_REPOSITORY" || exit 1
    git reset --hard HEAD
    git pull --all

    mkdir -p "$TMP/$PRGNAM"/subprojects/
    cp -a "$LIBDISPLAYINFO_REPOSITORY" "$TMP/$PRGNAM"/subprojects/libdisplay-info
    cd "$TMP/$PRGNAM"/subprojects/libdisplay-info || exit 1
    case $LIBDISPLAYINFO_VERSION in
        trunk)
            # LIBDISPLAYINFO_VERSION="git_r$(git log -1 --format=%h_%ad --date=format:%Y.%m.%d)"
            LIBDISPLAYINFO_VERSION="r$(git rev-list --count HEAD)_$(git log -1 --format=%h)"
            ;;
        latest)
            LIBDISPLAYINFO_VERSION=$(git tag --sort=-version:refname | head -n1)
            git checkout "$LIBDISPLAYINFO_VERSION"
            ;;
        *)
            git checkout "$LIBDISPLAYINFO_VERSION"
            ;;
    esac
    PKGNAM="${PKGNAM}+libdisplay_info"
    PKGVERSION="${PKGVERSION}+${LIBDISPLAYINFO_VERSION}"
fi


# Back to compiling…
cd "$TMP/$PRGNAM/" || exit 1

meson setup \
      --prefix /usr \
      --mandir /usr/man/ \
      --force-fallback-for=wlroots \
      "$MESONFLAGS" \
      build/

ninja -C build/

meson install --destdir="$PKG" -C build/ # --skip-subprojects

mkdir -p "$PKG$PREFIX/doc/$PRGNAM"
cp LICENSE ./*.md "$PKG$PREFIX/doc/$PRGNAM/"

cat <<EOF > "$PKG$PREFIX/bin/start_labwc.sh"
#!/bin/bash

#set -e

LOGFILE=~/.wsession-errors
true > \$LOGFILE
exec &> \$LOGFILE

set -x
echo "labwc Starting: \$( date )"

# Uncomment if mouse pointer is invisible
#export WLR_NO_HARDWARE_CURSORS=1

unset QT_QPA_PLATFORM

export WLR_RENDERER=vulkan
export CLUTTER_BACKEND=wayland
export SDL_VIDEODRIVER=wayland
export XDG_SESSION_DESKTOP=labwc
export XDG_SESSION_TYPE=wayland
export QT_PLATFORMTHEME=qt5ct
export QT_PLATFORM_PLUGIN=qt5ct

export QT_QPA_PLATFORMTHEME=qt5ct
export MOZ_ENABLE_WAYLAND=1
export XDG_CURRENT_DESKTOP=labwc
export XDG_PICTURES_DIR=~/.wallpapers

export XDG_RUNTIME_DIR=/tmp/xdg-runtime-\$(id -u)

mkdir -p \$XDG_RUNTIME_DIR
chmod 0700 \$XDG_RUNTIME_DIR

# avoid wlr error
unset DISPLAY

killall daemon

exec dbus-run-session /usr/bin/labwc
#dbus-launch --sh-syntax --exit-with-session /usr/bin/labwc
#exec /usr/bin/labwc
EOF
chmod +x "$PKG$PREFIX/bin/start_labwc.sh"
sed -i 's|Exec=labwc|Exec=/usr/bin/start_labwc.sh|' "$PKG$PREFIX/share/wayland-sessions/labwc.desktop"

###############
# corrections #
###############
cd "$PKG" || exit 1
chown -R root:root ./*
[ -d "$PKG$PREFIX/man" ] && find "$PKG$PREFIX/man" -name "*.?" -type f -exec gzip -9 {} \;

# Don't package wlroots includes or .so link as we don't want to interfere with SBo's wlroots
find "$PKG$PREFIX/lib$(uname -m | grep -o 64)/" -type l -exec rm {} \;
rm -r "$PKG$PREFIX/lib$(uname -m | grep -o 64)/pkgconfig/"
rm -r "$PKG$PREFIX/include/"

####################
# Actual packaging #
####################
mkdir -p "$PKG/install"

cat <<EOF > "$PKG/install/slack-desc"
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.  Line
# up the first '|' above the ':' following the base package name, and the '|'
# on the right side marks the last column you can put a character in.  You must
# make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':'.

     |-----handy-ruler------------------------------------------------------|
$PRGNAM: $PRGNAM (A Wayland window-stacking compositor)
$PRGNAM:
$PRGNAM: Labwc is a wlroots-based window-stacking compositor for wayland,
$PRGNAM: inspired by openbox.
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: https://github.com/${GITHUB_REPO}
EOF

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