#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
source "$(dirname "$0")/config"

get_random_port() {
  local port=$RANDOM
  local quit=0

  while [ "$quit" -ne 1 ]; do
    netstat -a | grep $port >> /dev/null
    if [ $? -gt 0 ]; then
      quit=1
    else
      port=$((port + 1))
    fi
  done
  echo $port
}

get_container_ip() {
  docker inspect --format '{{ .NetworkSettings.IPAddress }}' "$1"
}

verify_service_name() {
  local SERVICE="$1"
  [[ ! -n "$SERVICE" ]] && dokku_log_fail "(verify_service_name) SERVICE must not be null"
  [[ ! -d "$PLUGIN_DATA_ROOT/$SERVICE" ]] && dokku_log_fail "$PLUGIN_SERVICE service $SERVICE does not exist"
  return 0
}

service_alias() {
  local SERVICE="$1"
  local ALIAS_FILE="$PLUGIN_DATA_ROOT/$SERVICE/ALIAS"

  verify_service_name "$1"
  if [[ -f "$ALIAS_FILE" ]]; then
    cat "$ALIAS_FILE"
  else
    echo "$PLUGIN_DEFAULT_ALIAS"
  fi
}

service_info() {
  [[ -z $1 ]] && dokku_log_fail "Please specify a name for the service"
  verify_service_name "$1"

  local SERVICE="$1";
  local SERVICE_URL=$(service_url "$SERVICE")

  echo "       DSN: $SERVICE_URL"
}

service_list() {
  local SERVICES=$(ls $PLUGIN_DATA_ROOT 2> /dev/null)
  if [[ -z $SERVICES ]]; then
    dokku_log_warn "There are no $PLUGIN_SERVICE services"
  else
    dokku_log_info1_quiet "$PLUGIN_SERVICE services:"
    for SERVICE in $SERVICES; do
      dokku_log_verbose "$SERVICE $(service_status $SERVICE)"
    done
  fi
}

service_status() {
  local SERVICE="$1";
  local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
  local ID="$(cat "$SERVICE_ROOT/ID")"

  is_container_status "$ID" "Dead" && echo "(dead)" && return 0
  is_container_status "$ID" "OOMKilled" && echo "(oomkilled)" && return 0
  is_container_status "$ID" "Paused" && echo "(paused)" && return 0
  is_container_status "$ID" "Restarting" && echo "(restarting)" && return 0
  is_container_status "$ID" "Running" && echo "(running)" && return 0
  echo "(stopped)" && return 0
}

service_url() {
  local SERVICE="$1";
  local SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"

  local ID="$(cat "$SERVICE_ROOT/ID")"
  local IP="$(get_container_ip "$ID")"
  echo "$PLUGIN_SCHEME://$IP:$PLUGIN_DATASTORE_PORT/0"
}

is_container_status () {
  local CID=$1
  local TEMPLATE="{{.State.$2}}"
  local CONTAINER_STATUS=$(docker inspect -f "$TEMPLATE" "$CID" || true)

  if [[ "$CONTAINER_STATUS" == "true" ]]; then
    return 0
  else
    return 1
  fi
}