commands

#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
APP="$2"
IMAGE="dokku/$APP"
REPO="$DOKKU_ROOT/$APP"

PLUGIN_DIR=$(dirname $0)
. "$PLUGIN_DIR/lib/helpers"

case "$1" in
  scale)
    [[ -z $2 ]] && echo "Please specify an app to scale" && exit 1

    if [[ -n $DOKKU_API_VERSION ]]; then
      source "$PLUGIN_ENABLED_PATH/common/functions"
      IMAGE=$(get_app_image_name $APP)
    fi

    if [ ! -d "$REPO" ]; then
      echo "No matching app: $APP"
      exit 1
    fi
    shift 2

    # TODO: Copy to a temp file first
    # TODO: Validate that it is of the form name=num

    SCALEFILE="$REPO/SCALE"
    for line in "$@"
    do
      echo "$line"
    done > "$SCALEFILE"

    # kill the app when running
    echo "Checking for existing running application"
    if [[ -f "$DOKKU_ROOT/$APP/CONTAINER" ]]; then
      echo "Existing running application found. Will kill it."
      oldid=$(< "$DOKKU_ROOT/$APP/CONTAINER")
      docker kill $oldid > /dev/null 2>&1 || true
      echo "Killed running application."
    fi

    echo "Scaling app $APP:"
    cat -n "$REPO/SCALE"
    copy_to_container "$SCALEFILE" /app/SCALE

    dokku deploy "$APP"
    ;;

  help)
    HELP=$(cat<<EOF
    scale <app> TYPE1=NUM1 [TYPE2=NUM2 ...], Scale an app
EOF
)
    if [[ -n $DOKKU_API_VERSION ]]; then
      echo "$HELP"
    else
      cat && echo "$HELP"
    fi
  ;;

  *)
    exit $DOKKU_NOT_IMPLEMENTED_EXIT
    ;;

esac