#!/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_runtime_link.XXXXXX")
manifest=${1:-linuxcnc-rs274-wasm-source-files.txt}

trap 'rm -rf "$build_dir"' EXIT
LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs.sh "$manifest"

common_flag_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-common-cxxflags.sh --profile core20-sections)
mapfile -t common_flags <<<"$common_flag_output"
common_flags+=(-DCNC_SIM_ENABLE_LINUXCNC_RS274_BACKEND)

shim_output=$(./list-linuxcnc-wasm-safe-shims.sh)
mapfile -t sources <<<"$shim_output"

core_source_output=$(./list-cmake-set-sources.sh cnc_sim_core_sources core/)
mapfile -t core_sources <<<"$core_source_output"
sources+=("${core_sources[@]}")

backend_source_output=$(./list-cmake-set-sources.sh cnc_sim_linuxcnc_rs274_backend_sources core/)
mapfile -t backend_sources <<<"$backend_source_output"
sources+=("${backend_sources[@]}")

source_output=$(LINUXCNC_ROOT="$linuxcnc_root" ./list-linuxcnc-wasm-manifest-sources.sh "$manifest" core full)
mapfile -t linuxcnc_sources <<<"$source_output"
sources+=("${linuxcnc_sources[@]}")
sources+=(core/wasm_shims/cnc_sim_wasm_runtime_probe_main.cc)

objects=()
object_index=0
for source in "${sources[@]}"; do
    obj="$build_dir/source_${object_index}.o"
    source_flags=()
    case "$source" in
        core/src/linuxcnc_genserfuncs_adapter.c|core/src/linuxcnc_xyzab_tdr_kins_adapter.c)
            source_flags+=(-fpermissive)
            ;;
    esac
    "$cxx" "${common_flags[@]}" "${source_flags[@]}" -c "$source" -o "$obj"
    objects+=("$obj")
    object_index=$((object_index + 1))
done

"$cxx" "${objects[@]}" \
    -Wl,--gc-sections \
    -lfmt \
    -o "$build_dir/cnc_sim_wasm_runtime_probe"

nm -C "$build_dir/cnc_sim_wasm_runtime_probe" > "$build_dir/runtime.symbols"
grep -F "cnc_sim_parse_program" "$build_dir/runtime.symbols" >/dev/null
grep -F "parse_linuxcnc_rs274_backend" "$build_dir/runtime.symbols" >/dev/null
grep -F "parse_gcode_with_backend" "$build_dir/runtime.symbols" >/dev/null
grep -F "Interp::read(char const*)" "$build_dir/runtime.symbols" >/dev/null
grep -F "Interp::init()" "$build_dir/runtime.symbols" >/dev/null
grep -E '(^| )wordexp($| )' "$build_dir/runtime.symbols" >/dev/null
grep -E '(^| )wordfree($| )' "$build_dir/runtime.symbols" >/dev/null

"$build_dir/cnc_sim_wasm_runtime_probe"

echo "linuxcnc wasm runtime link probe passed"