#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"

enter_default_cmd() {
  declare desc="enters running app container of specified proc type"
  local cmd="enter"
  local APP="$2"; local CONTAINER_TYPE="$3"; local IMAGE_TAG=$(get_running_image_tag "$APP"); local IMAGE=$(get_deploying_app_image_name "$APP" "$IMAGE_TAG")
  verify_app_name "$APP"
  local AVAILABLE_CONTAINER_TYPES=($(get_app_running_container_types "$APP"))

  if [[ -z "$3" ]]; then
    if [[ ${#AVAILABLE_CONTAINER_TYPES[@]} -gt 1 ]]; then
      dokku_log_warn "No container type specified."
      dokku_log_fail "Available types for app ($APP): ${AVAILABLE_CONTAINER_TYPES[*]}"
    else
      CONTAINER_TYPE="${AVAILABLE_CONTAINER_TYPES[0]}"
    fi
  fi

  if [[ "$3" == "--container-id" ]]; then
    local DOKKU_APP_CIDS=( $(get_app_container_ids "$APP") )
    if [[ ! -n "$4" ]]; then
      dokku_log_warn "No container id specified."
      dokku_log_fail "Available ids for app ($APP): ${DOKKU_APP_CIDS[*]}"
    fi
    if ! (printf -- '%s\n' "${DOKKU_APP_CIDS[@]}" | grep -q -e "^$4"); then
      dokku_log_warn "Invalid container id for app"
      dokku_log_fail "Available ids for app ($APP): ${DOKKU_APP_CIDS[*]}"
    fi
    local ID=$(printf -- '%s\n' "${DOKKU_APP_CIDS[@]}" | grep -e "^$4")
    shift 4
  else
    local DOKKU_APP_CIDS=( $(get_app_container_ids "$APP" "$CONTAINER_TYPE") )
    local ID=${DOKKU_APP_CIDS[0]}
    if [[ ! -n $ID ]]; then
      dokku_log_warn "No containers found for type '$CONTAINER_TYPE'"
      dokku_log_fail "Available types for app ($APP): ${AVAILABLE_CONTAINER_TYPES[*]}"
    fi
    if [[ $3 ]]; then
      shift 3
    else
      shift 2
    fi
  fi

  docker inspect "$ID" &> /dev/null || dokku_log_fail "Container does not exist"
  docker inspect -f '{{ .State.Running }}' "$ID" | grep -q "true" > /dev/null || dokku_log_fail "Container is not running"

  local EXEC_CMD=""
  has_tty && local DOKKU_RUN_OPTS+=" -i -t"
  is_image_herokuish_based "$IMAGE" && local EXEC_CMD="/exec"
  # shellcheck disable=SC2086
  docker exec $DOKKU_RUN_OPTS $ID $EXEC_CMD "${@:-/bin/bash}"
}

enter_default_cmd "$@"