ic.zsh

ic() {
  local INCUS_LOG_DIR="${INCUS_LOG_DIR:-/var/log/incus}"
  local lines="${INCUS_CONSOLE_LINES:-50}"
  local follow=0
  local query=""

  while (( $# )); do
    case "$1" in
      -f|--follow) follow=1; shift ;;
      -n)          shift; lines="$1"; shift ;;
      *)           query="$1"; shift ;;
    esac
  done

  # collect instance names from log dirs
  local -a candidates
  candidates=( "${INCUS_LOG_DIR}"/*/console.log(N) )
  candidates=( "${(@)candidates:h:t}" )

  if (( ${#candidates} == 0 )); then
    echo "incus-console: no instances found in ${INCUS_LOG_DIR}" >&2
    return 1
  fi

  local name=""

  if [[ -z "$query" ]]; then
    if (( ${#candidates} == 1 )); then
      name="${candidates[1]}"
    else
      echo "incus-console: available instances:" >&2
      printf '  %s\n' "${candidates[@]}" >&2
      echo -n "instance: " >&2
      read name
    fi
  else
    # fuzzy: substring match, case-insensitive
    local -a matches
    local c
    for c in "${candidates[@]}"; do
      [[ "${c:l}" == *"${query:l}"* ]] && matches+=("$c")
    done

    if (( ${#matches} == 0 )); then
      echo "incus-console: no instance matching '${query}'" >&2
      printf '  available: %s\n' "${candidates[@]}" >&2
      return 1
    elif (( ${#matches} == 1 )); then
      name="${matches[1]}"
    else
      # multiple — pick shortest (closest) match
      name="${matches[1]}"
      for c in "${matches[@]:1}"; do
        (( ${#c} < ${#name} )) && name="$c"
      done
      echo "incus-console: matched '${name}' (ambiguous: ${matches[*]})" >&2
    fi
  fi

  local log_path="${INCUS_LOG_DIR}/${name}/console.log"
  echo "── ${name} ──────────────────────────────────────────────"

  if (( follow )); then
    [[ ! -f "$log_path" ]] && { echo "incus-console: not found: ${log_path}" >&2; return 1 }
    echo "── following ${log_path} (Ctrl-C to stop)"
    tail -f "$log_path"
    return
  fi

  # try ring buffer first
  local ring
  ring="$(incus console "$name" --show-log 2>/dev/null)"

  if [[ -n "$ring" ]]; then
    echo "$ring" | tail -n "$lines"
    return
  fi

  # fallback to file
  if [[ -f "$log_path" ]]; then
    local total=$(wc -l < "$log_path")
    echo "── console.log fallback — last ${lines}/${total} lines"
    tail -n "$lines" "$log_path"
  else
    echo "incus-console: no data (ring empty, no log file at ${log_path})" >&2
    return 1
  fi
}