#!/usr/bin/env bash
# shellcheck disable=SC2059,SC2016

# replace default echo
_echo() { printf "$*\n"; }

cleanup() {
    IS_SIGINT="${IS_SIGINT:-true}"
    _echo "cleaning up..."
    rm -fr {luvit,luvi,lit}-build
    "$IS_SIGINT" && exit 1
}

_echo "installing build dependencies..."

trap cleanup SIGINT

pkg i clang make cmake binutils -y

for repo in https://github.com/luvit/{luvit,luvi,lit}; do
    git clone "$repo" --recursive "${repo##*/}-build"
done

BUILD_DIR="${PWD:-$(pwd)}"
cd luvi-build || exit 1

# build luvi
_echo "building luvi..."
LUVI_BUILD_TYPE="${1:-regular}"
NPROC_FLAG="-j$(nproc)"

if [[ "$LUVI_BUILD_TYPE" = 'regular' || "$LUVI_BUILD_TYPE" = 'tiny' ]]; then
    make "$LUVI_BUILD_TYPE" "$NPROC_FLAG" || exit 1
    echo
fi

make luvi "$NPROC_FLAG" || exit 1
mv build/luvi "$BUILD_DIR"

cd "$BUILD_DIR" || exit 1
cd lit-build || exit 1

# build lit
_echo "building lit..."
"$BUILD_DIR"/luvi . -- make . ./lit "$BUILD_DIR"/luvi || exit 1
mv lit "$BUILD_DIR"

cd "$BUILD_DIR" || exit 1
cd luvit-build || exit 1

# build luvit
_echo "building luvit..."
"$BUILD_DIR"/lit make . ./luvit "$BUILD_DIR"/luvi || exit 1
mv luvit "$BUILD_DIR"

cd "$BUILD_DIR" || exit 1

# cleanup
IS_SIGINT='false' cleanup

_echo "installation successful!"