#!/bin/bash
# Dispatcher for dashboard-scheduled tasks.
# Usage: run-task.sh <type> [...params]
#   say <message>
#   backup
#   snapshot-prune <keepCount>

set -u
TYPE="${1:-}"
shift || true

LOG="${MC_DASHBOARD_LOG:-/home/minecraft/logs/mc-dashboard/tasks.log}"
mkdir -p "$(dirname "$LOG")" 2>/dev/null || true
if [ ! -w "$(dirname "$LOG")" ]; then LOG="/tmp/mc-dashboard-tasks.log"; fi

log() {
  echo "[$(date -Iseconds)] $*" >>"$LOG" 2>/dev/null || true
}

rcon_say() {
  local msg="$1"
  RCON_MSG="$msg" node -e '
    const { Rcon } = require("/home/minecraft/dashboard/node_modules/rcon-client");
    (async () => {
      try {
        const rcon = await Rcon.connect({ host: "127.0.0.1", port: 25575, password: "23991818cc169249f181436f2a29a013" });
        await rcon.send("say " + process.env.RCON_MSG);
        rcon.end();
      } catch (e) {
        process.stderr.write(String(e));
        process.exit(1);
      }
    })();
  '
}

case "$TYPE" in
  say)
    MSG="${*:-}"
    if [ -z "$MSG" ]; then log "say: empty message"; exit 1; fi
    MSG="$(printf '%s' "$MSG" | tr -d '\r\n')"
    rcon_say "$MSG"
    log "say: $MSG"
    ;;
  backup)
    bash /home/minecraft/dashboard/scripts/backup-world.sh >>"$LOG" 2>&1
    log "backup: done ($?)"
    ;;
  snapshot-prune)
    KEEP="${1:-5}"
    if ! [[ "$KEEP" =~ ^[0-9]+$ ]] || [ "$KEEP" -lt 1 ] || [ "$KEEP" -gt 50 ]; then
      KEEP=5
    fi
    DIR="/home/minecraft/server/snapshots"
    if [ -d "$DIR" ]; then
      ls -1dt "$DIR"/*/ 2>/dev/null | tail -n +$((KEEP + 1)) | while read -r d; do
        [ -n "$d" ] && rm -rf -- "$d"
      done
    fi
    log "snapshot-prune: kept $KEEP"
    ;;
  *)
    log "unknown task type: $TYPE"
    exit 1
    ;;
esac