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

ROOT_DIR="$(cd "$(dirname "$0")/../.." && pwd)"
BUILD_DIR="$ROOT_DIR/build/native"
GCODE_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/gcode"
CANON_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/canon"
GCODE_ERROR_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/gcode_errors"
CANON_ERROR_FIXTURE_DIR="$ROOT_DIR/tests/fixtures/canon_errors"

"$ROOT_DIR/tools/build_native_probes.sh"

check_exitcode() {
  local name="$1"
  local file="$BUILD_DIR/$name.exitcode"

  if [[ ! -f "$file" ]]; then
    echo "missing exitcode: $file" >&2
    exit 1
  fi

  local rc
  rc="$(tr -d '[:space:]' < "$file")"
  if [[ "$rc" != "0" ]]; then
    echo "$name failed with exit code $rc" >&2
    if [[ -f "$BUILD_DIR/$name.stderr.log" ]]; then
      sed -n '1,160p' "$BUILD_DIR/$name.stderr.log" >&2
    fi
    exit 1
  fi
}

check_exitcode linuxcnc_interp_state_probe
check_exitcode linuxcnc_namedparam_harness
check_exitcode linuxcnc_interp_minimal_harness
check_exitcode linuxcnc_interp_minimal_harness.run
check_exitcode linuxcnc_rs274_compile_probe
check_exitcode linuxcnc_interp_convert_source_probe

check_fixture_output() {
  local fixture="$1"
  local expected="$2"
  local stdout_file="$3"

  grep -Fq "read=0" "$stdout_file"
  grep -Fq "parse_line=0" "$stdout_file"

  local line_count
  line_count="$(grep -cv '^[[:space:]]*$' "$fixture")"
  local line_number
  for ((line_number = 1; line_number <= line_count; line_number += 1)); do
    grep -Fq "execute_line_${line_number}=0" "$stdout_file"
  done

  while IFS= read -r expected_event; do
    [[ -z "$expected_event" ]] && continue
    grep -Fq "$expected_event" "$stdout_file"
  done < "$expected"
}

RUN_STDOUT="$BUILD_DIR/linuxcnc_interp_minimal_harness.run.stdout.log"
check_fixture_output \
  "$GCODE_FIXTURE_DIR/minimal_linear.ngc" \
  "$CANON_FIXTURE_DIR/minimal_linear.events" \
  "$RUN_STDOUT"

for fixture in "$GCODE_FIXTURE_DIR"/*.ngc; do
  name="$(basename "$fixture" .ngc)"
  expected="$CANON_FIXTURE_DIR/$name.events"
  if [[ ! -f "$expected" ]]; then
    echo "missing expected canon fixture: $expected" >&2
    exit 1
  fi

  stdout_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stdout.log"
  stderr_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stderr.log"
  "$BUILD_DIR/linuxcnc_interp_minimal_harness" "$fixture" \
    >"$stdout_file" \
    2>"$stderr_file"
  check_fixture_output "$fixture" "$expected" "$stdout_file"
done

for fixture in "$GCODE_ERROR_FIXTURE_DIR"/*.ngc; do
  name="$(basename "$fixture" .ngc)"
  expected="$CANON_ERROR_FIXTURE_DIR/$name.expected"
  if [[ ! -f "$expected" ]]; then
    echo "missing expected error fixture: $expected" >&2
    exit 1
  fi

  stdout_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stdout.log"
  stderr_file="$BUILD_DIR/linuxcnc_interp_minimal_harness.$name.stderr.log"
  "$BUILD_DIR/linuxcnc_interp_minimal_harness" "$fixture" \
    >"$stdout_file" \
    2>"$stderr_file"

  while IFS= read -r expected_line; do
    [[ -z "$expected_line" ]] && continue
    if [[ "$expected_line" == absent=* ]]; then
      forbidden="${expected_line#absent=}"
      if grep -Fq "$forbidden" "$stdout_file"; then
        echo "unexpected output in $stdout_file: $forbidden" >&2
        exit 1
      fi
    elif [[ "$expected_line" == error_text=* ]]; then
      grep -Fq "${expected_line#error_text=}" "$stderr_file"
    else
      grep -Fq "$expected_line" "$stdout_file"
    fi
  done < "$expected"
done

echo "native probe validation complete"