#!/bin/bash
# Builds libm3ui.so against an upstream Fcitx5 source tree of the same version
# as the Fcitx5 installed on this system. The addon needs Fcitx5's internal
# Wayland protocol wrappers, which are not part of fcitx5-devel, so it is built
# inside the upstream tree.
set -euo pipefail

root=$(cd "$(dirname "$0")/.." && pwd)
work=${WORK_DIR:-$root/build}
version=${FCITX_VERSION:-$(pkg-config --modversion Fcitx5Core)}
# Commit of the yoga submodule pinned by Fcitx5 (third_party/yoga).
yoga_commit=${YOGA_COMMIT:-042f5013152eb81c1552dec945b88f7b95ca350f}

srcdir=$work/fcitx5-$version
mkdir -p "$work"

if [ ! -d "$srcdir" ]; then
    echo ">> fetching Fcitx5 $version"
    curl -fsSL "https://github.com/fcitx/fcitx5/archive/refs/tags/$version.tar.gz" |
        tar -xz -C "$work"
fi
if [ ! -f "$srcdir/third_party/yoga/yoga/CMakeLists.txt" ]; then
    echo ">> fetching yoga $yoga_commit"
    rm -rf "$srcdir/third_party/yoga"
    mkdir -p "$srcdir/third_party/yoga"
    curl -fsSL "https://github.com/facebook/yoga/archive/$yoga_commit.tar.gz" |
        tar -xz -C "$srcdir/third_party/yoga" --strip-components=1
fi

echo ">> overlaying m3ui"
rm -rf "$srcdir/src/ui/m3ui"
cp -r "$root/src" "$srcdir/src/ui/m3ui"
if ! grep -q 'add_subdirectory(m3ui)' "$srcdir/src/ui/CMakeLists.txt"; then
    sed -i 's/^add_subdirectory(classic)$/add_subdirectory(classic)\nadd_subdirectory(m3ui)/' \
        "$srcdir/src/ui/CMakeLists.txt"
fi

echo ">> configuring"
cmake -S "$srcdir" -B "$work/cmake" -G Ninja \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX="${PREFIX:-$HOME/.local/m3ui}" \
    -DENABLE_X11=On -DENABLE_WAYLAND=On \
    -DENABLE_TEST=Off -DENABLE_TESTING_ADDONS=Off -DENABLE_ENCHANT=Off \
    -DENABLE_DOC=Off -DENABLE_XDGAUTOSTART=Off -DENABLE_EMOJI=Off

echo ">> building"
ninja -C "$work/cmake" m3ui src/ui/m3ui/m3ui.conf
echo ">> done, run scripts/install.sh"