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

cd "$(dirname "$0")"

# LinuxCNC source basis: wasm-safe probes compile the manifest-selected
# src/emc/rs274ngc, src/emc/ini, and src/emc/tooldata sources against
# browser shims, so include roots mirror LinuxCNC src/Makefile and the rs274,
# ini, and tooldata Submakefiles without linking native LinuxCNC libraries.
linuxcnc_root=${LINUXCNC_ROOT:-../linuxcnc}
preflight_cache_dir=${CNC_SIM_PREFLIGHT_CACHE_DIR:-build/linuxcnc-helper-preflight-cache}
std_flag=-std=c++17
include_core_include=0
include_core_src=0
include_tooldata=0
include_wctype=0
syntax_only=0
function_sections=0
data_sections=0
profile=base

while [[ "$#" -gt 0 ]]; do
    case "$1" in
        --profile)
            if [[ "$#" -lt 2 ]]; then
                echo "missing --profile value" >&2
                exit 1
            fi
            profile=$2
            shift 2
            ;;
        --std)
            if [[ "$#" -lt 2 ]]; then
                echo "missing --std value" >&2
                exit 1
            fi
            std_flag=-std="$2"
            shift 2
            ;;
        --core-include)
            include_core_include=1
            shift
            ;;
        --core-src)
            include_core_src=1
            shift
            ;;
        --tooldata-include)
            include_tooldata=1
            shift
            ;;
        --wctype)
            include_wctype=1
            shift
            ;;
        --syntax-only)
            syntax_only=1
            shift
            ;;
        --function-sections)
            function_sections=1
            shift
            ;;
        --data-sections)
            data_sections=1
            shift
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "unknown wasm cxxflag option: $1" >&2
            exit 1
            ;;
    esac
done

case "$profile" in
    base|core20|core20-sections)
        ;;
    *)
        echo "unknown wasm cxxflag profile: $profile" >&2
        exit 1
        ;;
esac

case "$profile" in
    core20|core20-sections)
        std_flag=-std=c++20
        include_core_include=1
        include_core_src=1
        include_wctype=1
        ;;
esac

case "$profile" in
    core20-sections)
        function_sections=1
        data_sections=1
        ;;
esac

LINUXCNC_ROOT="$linuxcnc_root" ./check-linuxcnc-inputs-cached.sh --cache-dir "$preflight_cache_dir" --root-only

printf '%s\n' \
    "$std_flag" \
    -DULAPI \
    -DCNC_SIM_ENABLE_LINUXCNC_WASM_SAFE_PROBE \
    $([[ "$syntax_only" -eq 1 ]] && printf '%s\n' -fsyntax-only) \
    $([[ "$include_wctype" -eq 1 ]] && printf '%s\n' -include wctype.h) \
    $([[ "$function_sections" -eq 1 ]] && printf '%s\n' -ffunction-sections) \
    $([[ "$data_sections" -eq 1 ]] && printf '%s\n' -fdata-sections) \
    $([[ "$include_core_include" -eq 1 ]] && printf '%s\n' -I "$(pwd)/core/include") \
    $([[ "$include_core_src" -eq 1 ]] && printf '%s\n' -I "$(pwd)/core/src") \
    $([[ "$include_tooldata" -eq 1 ]] && printf '%s\n' -I "$linuxcnc_root/src/emc/tooldata") \
    -I "$(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"