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

ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
LINUXCNC_ROOT="${LINUXCNC_ROOT:-$ROOT_DIR/../linuxcnc}"
UPSTREAM="$LINUXCNC_ROOT/src/emc/task/emccanon.cc"
SUBSET_SRC="$ROOT_DIR/vendor/linuxcnc/src/emc/task/emccanon_wasm_subset.cc"
SUBSET_HDR="$ROOT_DIR/vendor/linuxcnc/src/emc/task/emccanon_wasm_subset.hh"
BUILD_SCRIPT="$ROOT_DIR/tools/build_task_hal_wasm.sh"

print_kv() {
  printf '%s=%s\n' "$1" "$2"
}

require_file() {
  local key="$1"
  local path="$2"
  if [[ ! -f "$path" ]]; then
    print_kv "$key" missing
    print_kv "${key}_path" "$path"
    exit 1
  fi
  print_kv "$key" ok
  print_kv "${key}_path" "$path"
}

require_pattern() {
  local key="$1"
  local pattern="$2"
  local path="$3"
  if ! rg -q "$pattern" "$path"; then
    print_kv "$key" missing
    print_kv "${key}_pattern" "$pattern"
    print_kv "${key}_path" "$path"
    exit 1
  fi
  print_kv "$key" ok
}

require_file task_emccanon_subset_upstream "$UPSTREAM"
require_file task_emccanon_subset_source "$SUBSET_SRC"
require_file task_emccanon_subset_header "$SUBSET_HDR"

for fn in \
  generate_fast_move \
  generate_move \
  STRAIGHT_TRAVERSE \
  STRAIGHT_FEED
do
  require_pattern "task_emccanon_subset_upstream_$fn" "$fn" "$UPSTREAM"
  require_pattern "task_emccanon_subset_origin_$fn" "$fn" "$SUBSET_SRC"
done

require_pattern task_emccanon_subset_origin_path "src/emc/task/emccanon.cc" "$SUBSET_SRC"
require_pattern task_emccanon_subset_build_included "emccanon_wasm_subset.cc" "$BUILD_SCRIPT"

print_kv task_emccanon_subset_source_reuse ok