serverSelect() {
  mkdir -p /data/server
  cd /data/server || die "Cannot access /data/server"
  if [[ -f "server.jar" ]] || [[ -f "run.sh" ]] || [[ -f "bedrock_server" ]]; then
    log "Found existing server files, skipping download."
  else
    case "$MC_LOADER" in
    vanilla)
      getVanilla
      ;;
    paper)
      getPaper
      ;;
    fabric)
      getFabric
      ;;
    forge)
      getForge
      ;;
    neoforge)
      getNeoForge
      ;;
    bedrock)
      getBedrock
      ;;
    *)
      die "Server type '${MC_LOADER}' is not recognized. Valid: vanilla, paper, fabric, forge, neoforge, bedrock"
      ;;
    esac
  fi
}

buildCommand() {
  JAVA_ARGS="-Xms${XMS} -Xmx${XMX}"
  if [[ -n "${ADD_ARGS}" ]]; then
    RUN_STRING="${ADD_ARGS} ${JAVA_ARGS} -jar ${JAR} nogui"
  else
    RUN_STRING="${JAVA_ARGS} -jar ${JAR} nogui"
  fi
}

detectForgeVersion() {
  # Detect the forge/neoforge version from the installed jar names
  VER_LOADER="${VER_LOADER:-}"
  if [[ -n "$VER_LOADER" ]]; then
    return
  fi

  if [[ "$MC_LOADER" == "neoforge" ]] && [[ -L "/data/server/server.jar" ]]; then
    VER_LOADER=$(readlink "/data/server/server.jar" | sed 's/^neoforge-//;s/\.jar$//')
  elif [[ "$MC_LOADER" == "forge" ]]; then
    local forge_jar
    forge_jar=$(ls /data/server/forge-"${MC_VERSION}"-*.jar 2>/dev/null | head -1)
    if [[ -n "$forge_jar" ]]; then
      VER_LOADER="${forge_jar#/data/server/forge-${MC_VERSION}-}"
      VER_LOADER="${VER_LOADER%.jar}"
    fi
  fi
}

serverStart() {
  detectForgeVersion
  newForge

  cd /data/server || die "Cannot access /data/server"
  if [[ ! -f "server.properties" ]]; then
    touch "server.properties"
  fi

  if [[ ! -f "$JAR" ]] && [[ ! -f "run.sh" ]] && [[ ! -f "bedrock_server" ]]; then
    die "Server binary not found in /data/server"
  fi

  log "--- Server Starting ---"
  log "Minecraft Version: ${MC_VERSION}"
  log "Loader Type: ${SERVER_TYPE:-$MC_LOADER}"
  log "Loader Version: ${MC_LOADER_VERSION:-auto}"
  if [[ "$MC_LOADER" != "bedrock" ]]; then
    log "Java Version: ${JAVA_VERSION}"
    log "Jar: ${JAR}"
    log "Memory: Xms=${XMS} Xmx=${XMX}"
    if [[ -n "${ADD_ARGS}" ]]; then
      log "Additional Args: ${ADD_ARGS}"
    fi
  fi
  log "Running as UID:${PUID} GID:${PGID}"

  serverInfoWrite

  if [[ "$MC_LOADER" == "bedrock" ]]; then
    log "Starting Bedrock server..."
    exec env LD_LIBRARY_PATH=. ./bedrock_server
  elif [[ "$MC_LOADER" == "neoforge" ]]; then
    log "Starting NeoForge server..."
    exec java @user_jvm_args.txt @libraries/net/neoforged/neoforge/"${VER_LOADER}"/unix_args.txt "$@"
  elif [[ "$MC_LOADER" == "forge" ]] && [[ "${NEW_FORGE:-false}" == "true" ]]; then
    log "Starting Forge server (new-style)..."
    exec java @user_jvm_args.txt @libraries/net/minecraftforge/forge/"${MC_VERSION}"-"${VER_LOADER}"/unix_args.txt "$@"
  else
    log "Starting ${SERVER_TYPE:-$MC_LOADER} server..."
    exec java $RUN_STRING
  fi
}