#!/usr/bin/env bash
# max25-ctl — MAX25-Stack-Lite control entry point (Packet Radio / AX.25, localhost).
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PREFIX=""
ROOT=""

if [[ -f "${SCRIPT_DIR}/../plugins/manifest.yaml" ]]; then
  ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
elif [[ -d "${SCRIPT_DIR}/../share/max25" ]]; then
  PREFIX="$(cd "${SCRIPT_DIR}/.." && pwd)"
  ROOT="${MAX25_ROOT:-${PREFIX}}"
else
  ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
fi

stack_script() {
  local rel="$1"
  if [[ -f "${ROOT}/stacks/${rel}" ]]; then
    echo "${ROOT}/stacks/${rel}"
    return 0
  fi
  if [[ -n "${PREFIX}" && -f "${PREFIX}/share/max25/stacks/${rel}" ]]; then
    echo "${PREFIX}/share/max25/stacks/${rel}"
    return 0
  fi
  return 1
}

resolve_crdop_bin() {
  if [[ -n "${CRDOP_BIN:-}" && -x "${CRDOP_BIN}" ]]; then
    echo "${CRDOP_BIN}"
    return 0
  fi
  if command -v crdopc >/dev/null 2>&1; then
    command -v crdopc
    return 0
  fi
  if [[ -x "${ROOT}/build/bin/crdopc" ]]; then
    echo "${ROOT}/build/bin/crdopc"
    return 0
  fi
  return 1
}

resolve_baycom_ctl() {
  local ctl=""
  ctl="$(stack_script "baycom-pr/scripts/baycom-pr-ctl" 2>/dev/null || true)"
  if [[ -n "${ctl}" && -x "${ctl}" ]]; then
    echo "${ctl}"
    return 0
  fi
  if command -v baycom-pr-ctl >/dev/null 2>&1; then
    command -v baycom-pr-ctl
    return 0
  fi
  return 1
}

MODE="${MAX25_MODE:-standalone}"
HARDWARE=""
DEVICE=""
BAYCOM_INI=""
BAYCOM_PROFILE=""
ACTION="${1:-help}"
shift || true

usage() {
  cat <<EOF
max25-ctl — MAX25-Stack-Lite control (Packet Radio / AX.25, localhost)

Usage:
  max25-ctl <command> [options]

Commands:
  help              This help
  discover          List local device backends
  build             Build the project (cmake -B build && cmake --build build)
  start             Start a hardware/soft-modem path
  stop              Stop a hardware/soft-modem path
  status            Show device status
  test              Offline tests (no root)

Daemon (Linux):
  stacks/daemon/max25d   Launcher (ps shows this path, not python3)
  stacks/daemon/max25d.py   M25/1 daemon implementation
  stacks/terminal/max25-terminal   Operator UI (F10 menu, CALLERID/CALLID)

Options (start/stop/status):
  --hardware HW     modems | soft-modems
  --device DEV      max25e0 (BayCom/based) | baycom-kiss | soft-crdop

Examples:
  max25-ctl discover
  max25-ctl build
  max25-ctl start --hardware modems --device max25e0
  max25-ctl start --hardware modems --device baycom-kiss
  max25-ctl start --hardware soft-modems --device soft-crdop
  max25-ctl test

Lite scope (max25-terminal, max25d, BayCom/based, CRDOP): README.md
  SET DEVICE <id> → CONNECT → SEND via max25-terminal after max25d is up
EOF
}

parse_opts() {
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --mode) MODE="$2"; shift 2 ;;
      --hardware) HARDWARE="$2"; shift 2 ;;
      --device) DEVICE="$2"; shift 2 ;;
      --baycom-ini) BAYCOM_INI="$2"; shift 2 ;;
      --baycom-profile) BAYCOM_PROFILE="$2"; shift 2 ;;
      *) echo "Unknown option: $1" >&2; usage; exit 1 ;;
    esac
  done
}

resolve_baycom_ini_path() {
  local device="${1:-max25e0}"
  local explicit="${2:-${BAYCOM_INI:-}}"
  local profile="${3:-${BAYCOM_PROFILE:-}}"

  if [[ -z "${explicit}" && -n "${profile}" ]]; then
    local paths_py=""
    if [[ -f "${ROOT}/stacks/daemon/paths.py" ]]; then
      paths_py="${ROOT}/stacks/daemon/paths.py"
    elif [[ -n "${PREFIX}" && -f "${PREFIX}/bin/paths.py" ]]; then
      paths_py="${PREFIX}/bin/paths.py"
    fi
    if [[ -n "${paths_py}" ]]; then
      local prefix_py="None"
      if [[ -n "${PREFIX}" ]]; then
        prefix_py="Path('${PREFIX}')"
      fi
      explicit="$(python3 -c "
import sys
from pathlib import Path
sys.path.insert(0, '$(dirname "${paths_py}")')
from paths import resolve_baycom_profile
p = resolve_baycom_profile('${profile}', '${device}', Path('${ROOT}'), ${prefix_py})
print(p or '')
" 2>/dev/null || true)"
      if [[ -z "${explicit}" ]]; then
        echo "baycom profile '${profile}' not found (use --baycom-ini PATH)" >&2
        return 1
      fi
    elif [[ "${profile}" == "dual" ]]; then
      for candidate in \
        "${ROOT}/stacks/baycom-pr/config/examples/baycom-pr.dual.ini" \
        "${PREFIX}/share/max25/stacks/baycom-pr/config/examples/baycom-pr.dual.ini"; do
        if [[ -f "${candidate}" ]]; then
          explicit="${candidate}"
          break
        fi
      done
      if [[ -z "${explicit}" ]]; then
        echo "dual baycom-pr.ini not found — copy stacks/baycom-pr/config/examples/baycom-pr.dual.ini" >&2
        return 1
      fi
    fi
  fi

  local paths_py=""
  if [[ -f "${ROOT}/stacks/daemon/paths.py" ]]; then
    paths_py="${ROOT}/stacks/daemon/paths.py"
  elif [[ -n "${PREFIX}" && -f "${PREFIX}/bin/paths.py" ]]; then
    paths_py="${PREFIX}/bin/paths.py"
  fi
  if [[ -n "${paths_py}" ]]; then
    local resolved=""
    local prefix_py="None"
    if [[ -n "${PREFIX}" ]]; then
      prefix_py="Path('${PREFIX}')"
    fi
    resolved="$(python3 -c "
import sys
from pathlib import Path
sys.path.insert(0, '$(dirname "${paths_py}")')
from paths import resolve_baycom_ini
p = resolve_baycom_ini('${device}', Path('${ROOT}'), ${prefix_py}, '''${explicit}''')
print(p or '')
" 2>/dev/null || true)"
    if [[ -n "${resolved}" && -f "${resolved}" ]]; then
      echo "${resolved}"
      return 0
    fi
  fi

  if [[ -n "${explicit}" ]]; then
    return 1
  fi

  local candidate=""
  for candidate in \
    "/etc/baycom/baycom-pr.ini" \
    "/etc/baycom/baycom-pr-single.ini" \
    "${ROOT}/local/baycom-pr.ini" \
    "${ROOT}/share/baycom/baycom-pr.pccom-ttyS0-only.ini.example" \
    "${PREFIX}/share/max25/baycom/baycom-pr.pccom-ttyS0-only.ini.example" \
    "${ROOT}/stacks/baycom-pr/config/baycom-pr.ini"; do
    if [[ -f "${candidate}" ]]; then
      if [[ "${candidate}" == "/etc/baycom/baycom-pr.ini" ]]; then
        local dual=""
        dual="$(python3 -c "
from pathlib import Path
import sys
sys.path.insert(0, '${ROOT}/stacks/daemon')
try:
    from paths import is_dual_baycom_ini
    print('dual' if is_dual_baycom_ini(Path('/etc/baycom/baycom-pr.ini')) else 'single')
except ImportError:
    print('single')
" 2>/dev/null || echo "single")"
        if [[ "${dual}" == "dual" ]]; then
          continue
        fi
      fi
      echo "${candidate}"
      return 0
    fi
  done
  return 1
}

start_baycom_kernel() {
  # Kernel baycom-pr removed 2026-07-18 — product path is bcpr.
  echo "BayCom/based uses max25-bcpr (not old kernel BayCom)." >&2
  echo "Start PC-COM first: sudo max25-bcpr-ctl start --ini /etc/max25/max25-bcpr.ini" >&2
  echo "Then max25d — see stacks/max25-bcpr/README.md" >&2
  echo "Frozen archive: MASTER vault archives/legacy/max25-stack-baycom-kernel-compa/" >&2
  exit 1
}

cmd_discover() {
  if [[ ! -f "${ROOT}/scripts/discover-plugins.sh" ]]; then
    echo "discover: source checkout required (set MAX25_ROOT)" >&2
    exit 1
  fi
  bash "${ROOT}/scripts/discover-plugins.sh" "$@"
}

cmd_build() {
  if [[ ! -f "${ROOT}/scripts/build.sh" ]]; then
    echo "build: source checkout required (set MAX25_ROOT)" >&2
    exit 1
  fi
  bash "${ROOT}/scripts/build.sh"
}

cmd_start() {
  parse_opts "$@"
  case "$HARDWARE" in
    tncs)
      case "$DEVICE" in
        tnc2c|"")
          local boot=""
          boot="$(stack_script "tncs/tnc2c-boot-wait.sh")"
          if [[ "${MAX25_TNC_PREP:-}" == "recover" ]]; then
            echo "TNC recover-only (software ladder, no power cycle)"
            exec "${boot}" --recover-only
          fi
          echo "TNC boot-wait rescue: power-cycle TNC while script runs if needed"
          exec "${boot}"
          ;;
        pktnc2)
          local boot=""
          boot="$(stack_script "tncs/pktnc2-boot-wait.sh")"
          if [[ "${MAX25_TNC_PREP:-}" == "recover" ]]; then
            echo "PK-TNC2 recover-only (software ladder, no power cycle)"
            exec "${boot}" --recover-only
          fi
          exec "${boot}"
          ;;
        *) echo "Unknown TNC device: $DEVICE" >&2; exit 1 ;;
      esac
      ;;
    modems)
      case "$DEVICE" in
        baycom-kiss|pccom-kiss)
          echo "baycom-kiss: USB/async KISS — no kernel stack start"
          echo "Configure max25d [devices] baycom-kiss and [serial.baycom-kiss]; max25d opens serial directly."
          exit 0
          ;;
        bcpr|max25e0|max25e0:bc0|max25e0:bc1|"")
          echo "BayCom/based PC-COM: sudo max25-bcpr-ctl start -c /etc/max25/max25-bcpr.ini" >&2
          echo "Then: ./scripts/run-max25d.sh — see stacks/max25-bcpr/README.md" >&2
          echo "Canonical: scripts/run-max25d.sh" >&2
          exit 1
          ;;
        baycom-par96|baycom-ser12|baycom-a|baycom-b)
          start_baycom_kernel "${DEVICE}"
          ;;
        *)
          echo "Unknown modem device: $DEVICE (use max25e0 / baycom-kiss)" >&2
          exit 1
          ;;
      esac
      ;;
    soft-modems)
      case "$DEVICE" in
        soft-crdop|"")
          local crdop_bin=""
          crdop_bin="$(resolve_crdop_bin)" || {
            if [[ -f "${ROOT}/scripts/build.sh" ]]; then
              echo "Building CRDOP..."
              bash "${ROOT}/scripts/build.sh"
              crdop_bin="$(resolve_crdop_bin)" || true
            fi
          }
          if [[ -z "${crdop_bin}" ]]; then
            echo "crdopc not found in PATH or build/bin" >&2
            exit 1
          fi
          local launcher=""
          launcher="$(stack_script "crdop/scripts/crdopc" 2>/dev/null || true)"
          if [[ -z "${launcher}" ]]; then
            echo "Starting crdopc (HyBBX crdop plugin attaches to TCP :8515)"
            exec env CRDOP_BIN="${crdop_bin}" crdopc
          fi
          echo "Starting crdopc (HyBBX crdop plugin attaches to TCP :8515)"
          CRDOP_BIN="${crdop_bin}" exec "${launcher}"
          ;;
        *)
          echo "Unknown soft-modem device: $DEVICE" >&2
          exit 1
          ;;
      esac
      ;;
    "")
      echo "Specify --hardware modems|soft-modems" >&2
      exit 1
      ;;
    *)
      echo "Unknown hardware: $HARDWARE" >&2
      exit 1
      ;;
  esac
}

cmd_stop() {
  parse_opts "$@"
  if [[ "$HARDWARE" == "modems" || -z "$HARDWARE" ]]; then
    case "$DEVICE" in
      baycom-kiss)
        echo "baycom-kiss: no baycom-pr-ctl stop (USB serial owned by max25d)"
        ;;
      *)
        local baycom_ctl=""
        baycom_ctl="$(resolve_baycom_ctl 2>/dev/null || true)"
        if [[ -n "${baycom_ctl}" ]]; then
          local ini=""
          ini="$(resolve_baycom_ini_path "${DEVICE:-baycom-ser12}" "${BAYCOM_INI}" 2>/dev/null || true)"
          if [[ -n "${ini}" ]]; then
            sudo "${baycom_ctl}" -c "${ini}" stop 2>/dev/null || true
          else
            sudo "${baycom_ctl}" stop 2>/dev/null || true
          fi
        fi
        ;;
    esac
  fi
  echo "TNC serial: release port (stop other userspace serial owner; fuser on device)"
}

cmd_status() {
  parse_opts "$@"
  echo "MAX25 mode: $MODE"
  if [[ -f "${ROOT}/scripts/discover-plugins.sh" ]]; then
    bash "${ROOT}/scripts/discover-plugins.sh" --type device || true
  else
    echo "discover: source checkout required (set MAX25_ROOT)"
  fi
  local baycom_ctl=""
  baycom_ctl="$(resolve_baycom_ctl 2>/dev/null || true)"
  if [[ -n "${baycom_ctl}" && "${DEVICE:-}" != "baycom-kiss" ]]; then
    local ini=""
    ini="$(resolve_baycom_ini_path "${DEVICE:-baycom-ser12}" "${BAYCOM_INI}" 2>/dev/null || true)"
    if [[ -n "${ini}" ]]; then
      sudo "${baycom_ctl}" -c "${ini}" status 2>/dev/null || echo "baycom-pr: not running or no root"
    else
      sudo "${baycom_ctl}" status 2>/dev/null || echo "baycom-pr: not running or no root"
    fi
  fi
}

cmd_test() {
  if [[ ! -d "${ROOT}/build" ]]; then
    if [[ ! -f "${ROOT}/scripts/build.sh" ]]; then
      echo "test: source checkout with build/ required (set MAX25_ROOT)" >&2
      exit 1
    fi
    bash "${ROOT}/scripts/build.sh"
  fi
  cmake --build "${ROOT}/build" --target max25_test
}

case "$ACTION" in
  help|-h|--help) usage ;;
  discover) cmd_discover "$@" ;;
  build) cmd_build ;;
  start) cmd_start "$@" ;;
  stop) cmd_stop "$@" ;;
  status) cmd_status "$@" ;;
  test) cmd_test ;;
  *) echo "Unknown command: $ACTION" >&2; usage; exit 1 ;;
esac