#!/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"
NAMEDPARAM_INI_FIXTURE="$ROOT_DIR/tests/fixtures/ini/namedparams.ini"

"$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_namedparam_harness.run
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

NAMEDPARAM_STDOUT="$BUILD_DIR/linuxcnc_namedparam_harness.run.stdout.log"
grep -Fq "init_named_parameters=0" "$NAMEDPARAM_STDOUT"
grep -Fq "global_named_count=57" "$NAMEDPARAM_STDOUT"
grep -Fq "_metric_machine: rc=0 found=1 value=1" "$NAMEDPARAM_STDOUT"
grep -Fq "_motion_mode: rc=0 found=1 value=10" "$NAMEDPARAM_STDOUT"
grep -Fq "_metric: rc=0 found=1 value=1" "$NAMEDPARAM_STDOUT"
grep -Fq "_feed: rc=0 found=1 value=123.45" "$NAMEDPARAM_STDOUT"
grep -Fq "_rpm: rc=0 found=1 value=678.9" "$NAMEDPARAM_STDOUT"
grep -Fq "_x: rc=0 found=1 value=1.25" "$NAMEDPARAM_STDOUT"
grep -Fq "_current_tool: rc=0 found=1 value=12" "$NAMEDPARAM_STDOUT"
grep -Fq "_ini[traj]max_linear_velocity: rc=0 found=1 value=35" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.pin-bit]: rc=0 found=1 value=1" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.signal-float]: rc=0 found=1 value=98.25" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.param-s32]: rc=0 found=1 value=-17" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.pin-u32]: rc=0 found=1 value=1.23457e+08" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.signal-s64]: rc=0 found=1 value=-9e+09" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.param-u64]: rc=0 found=1 value=9e+09" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.disconnected-float]: rc=0 found=1 value=12.5" "$NAMEDPARAM_STDOUT"
grep -Fq "_hal[standalone.missing]: rc=0 found=0 value=0" "$NAMEDPARAM_STDOUT"

check_fixture_output() {
  local fixture="$1"
  local expected="$2"
  local stdout_file="$3"
  local require_mdi="${4:-1}"

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

  if [[ "$require_mdi" == "1" ]]; then
    local line_count
    line_count="$(grep -cv '^[[:space:]]*$' "$fixture")"
    local line_number
    for ((line_number = 1; line_number <= line_count; line_number += 1)); do
      if ! grep -Fq "execute_line_${line_number}=0" "$stdout_file" &&
         ! grep -Fq "execute_line_${line_number}=2" "$stdout_file"; then
        echo "missing successful execute status for line $line_number in $stdout_file" >&2
        exit 1
      fi
    done
  else
    grep -Fq "file_open=0" "$stdout_file"
    grep -Fq "file_execute_1=0" "$stdout_file"
  fi

  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"
  INI_FILE_NAME="$NAMEDPARAM_INI_FIXTURE" "$BUILD_DIR/linuxcnc_interp_minimal_harness" "$fixture" \
    >"$stdout_file" \
    2>"$stderr_file"
  require_mdi=1
  if [[ "$name" == "oword_subroutine" ]]; then
    require_mdi=0
  fi
  check_fixture_output "$fixture" "$expected" "$stdout_file" "$require_mdi"
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"
  INI_FILE_NAME="$NAMEDPARAM_INI_FIXTURE" "$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 "$expected_line" "$stdout_file"
    else
      grep -Fq "$expected_line" "$stdout_file"
    fi
  done < "$expected"
done

echo "native probe validation complete"