#!/usr/bin/env bash
set -euo pipefail

cd "$(dirname "$0")"

linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
cxx=${CXX:-g++}
build_dir=$(mktemp -d "${TMPDIR:-/tmp}/cnc_sim_linuxcnc_wasm_interp_find_link.XXXXXX")

if [[ ! -d "$linuxcnc_root" ]]; then
    echo "missing LinuxCNC root: $linuxcnc_root" >&2
    exit 1
fi
trap 'rm -rf "$build_dir"' EXIT

tooldata_mmap_backend_shim=$(./list-linuxcnc-wasm-safe-shims.sh tooldata_mmap_backend.cc)
tooldata_runtime_stubs_shim=$(./list-linuxcnc-wasm-safe-shims.sh tooldata_runtime_stubs.cc)
rtapi_compat_shim=$(./list-linuxcnc-wasm-safe-shims.sh rtapi_compat.cc)
readarray -t linuxcnc_sources < <(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-source-files.sh \
    src/emc/tooldata/tooldata_common.cc \
    src/emc/rs274ngc/interp_find.cc)
tooldata_common_source=${linuxcnc_sources[0]}
interp_find_source=${linuxcnc_sources[1]}

common_flags=(
    -std=c++17
    -DULAPI
    -ffunction-sections
    -fdata-sections
    -I "$(pwd)/core/wasm_shims"
    -I "$linuxcnc_root/src"
    -I "$linuxcnc_root/src/emc"
    -I "$linuxcnc_root/src/emc/nml_intf"
    -I "$linuxcnc_root/src/emc/rs274ngc"
    -I "$linuxcnc_root/src/emc/motion"
    -I "$linuxcnc_root/include"
)

"$cxx" "${common_flags[@]}" \
    -c "$tooldata_common_source" \
    -o "$build_dir/tooldata_common.o"
"$cxx" "${common_flags[@]}" \
    -c "$tooldata_mmap_backend_shim" \
    -o "$build_dir/tooldata_mmap_backend.o"
"$cxx" "${common_flags[@]}" \
    -c "$tooldata_runtime_stubs_shim" \
    -o "$build_dir/tooldata_runtime_stubs.o"
"$cxx" "${common_flags[@]}" \
    -c "$rtapi_compat_shim" \
    -o "$build_dir/rtapi_compat.o"
"$cxx" "${common_flags[@]}" \
    -c core/wasm_shims/interp_find_probe_stubs.cc \
    -o "$build_dir/interp_find_probe_stubs.o"
"$cxx" "${common_flags[@]}" \
    -c "$interp_find_source" \
    -o "$build_dir/interp_find.o"
"$cxx" "${common_flags[@]}" \
    -c core/wasm_shims/interp_find_probe_main.cc \
    -o "$build_dir/interp_find_probe_main.o"

"$cxx" \
    "$build_dir/tooldata_common.o" \
    "$build_dir/tooldata_mmap_backend.o" \
    "$build_dir/tooldata_runtime_stubs.o" \
    "$build_dir/rtapi_compat.o" \
    "$build_dir/interp_find_probe_stubs.o" \
    "$build_dir/interp_find.o" \
    "$build_dir/interp_find_probe_main.o" \
    -Wl,--gc-sections \
    -o "$build_dir/interp_find_probe"

"$build_dir/interp_find_probe"

echo "linuxcnc wasm interp_find link probe passed"