#!/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: $linuxcnc_root" >&2
    exit 1
fi
for required_source in \
    src/emc/tooldata/tooldata_common.cc \
    src/emc/rs274ngc/interp_find.cc; do
    if [[ ! -f "$linuxcnc_root/$required_source" ]]; then
        echo "missing LinuxCNC source: $required_source" >&2
        exit 1
    fi
done
trap 'rm -rf "$build_dir"' EXIT

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 "$linuxcnc_root/src/emc/tooldata/tooldata_common.cc" \
    -o "$build_dir/tooldata_common.o"
"$cxx" "${common_flags[@]}" \
    -c core/wasm_shims/tooldata/tooldata_mmap_backend.cc \
    -o "$build_dir/tooldata_mmap_backend.o"
"$cxx" "${common_flags[@]}" \
    -c core/wasm_shims/tooldata/tooldata_runtime_stubs.cc \
    -o "$build_dir/tooldata_runtime_stubs.o"
"$cxx" "${common_flags[@]}" \
    -c core/wasm_shims/rtapi_compat.cc \
    -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 "$linuxcnc_root/src/emc/rs274ngc/interp_find.cc" \
    -o "$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"