nullclaw

#!/bin/sh
set -eu

cmd="${1:-run}"

case "$cmd" in
  run)
    # Minimal health endpoint expected by the nullclaw driver.
    mkdir -p /tmp/nullclaw-spike
    printf "ok\n" >/tmp/nullclaw-spike/health
    exec python3 -m http.server 3000 --directory /tmp/nullclaw-spike
    ;;
  cron)
    sub="${2:-}"
    case "$sub" in
      list)
        jobs_file=/tmp/nullclaw-spike/cron.jobs
        count=0
        if [ -f "$jobs_file" ]; then
          count="$(wc -l <"$jobs_file" | tr -d ' ')"
        fi
        echo "info(cron): Scheduled jobs (${count}):"
        if [ -f "$jobs_file" ]; then
          i=0
          while IFS="$(printf '\t')" read -r expr command; do
            [ -n "${expr:-}" ] || continue
            i=$((i + 1))
            echo "info(cron): - job-${i} | ${expr} | next=0 | status=n/a cmd: ${command}"
          done <"$jobs_file"
        fi
        ;;
      add)
        if [ "$#" -lt 4 ]; then
          echo "error: usage: nullclaw cron add '<schedule>' '<command>'" >&2
          exit 2
        fi
        mkdir -p /tmp/nullclaw-spike
        printf "%s\t%s\n" "$3" "$4" >>/tmp/nullclaw-spike/cron.jobs
        echo "info(cron): added schedule '$3'"
        ;;
      *)
        echo "error: unknown nullclaw cron subcommand '$sub'" >&2
        exit 2
        ;;
    esac
    ;;
  agent)
    # Spike stub accepts agent invocations so PostApply cron wiring can call it.
    if [ "${2:-}" = "-m" ]; then
      echo "nullclaw agent: ${3:-}"
      exit 0
    fi
    echo "error: usage: nullclaw agent -m <message>" >&2
    exit 2
    ;;
  *)
    echo "error: unknown nullclaw subcommand '$cmd'" >&2
    exit 2
    ;;
esac