#!/usr/bin/env bash
set -euo pipefail

NTFY_SERVER_URL=${NTFY_SERVER_URL:-ntfy.sh}
NTFY_CHANNEL=${NTFY_CHANNEL:-jellyfin_notications}
ICON_URL=${ICON_URL:-https://raw.githubusercontent.com/NX211/homer-icons/master}
TMDB_URL="https://www.themoviedb.org"

notify() {
# message title action tags priority
  curl -s \
    -H "Title: ${2}" \
    -H "Icon: ${ICON_URL}/png/jellyfin.png" \
    -H "Actions: ${3}" \
    -H "Tags: ${4}" \
    -H "Priority: ${5}" \
    -d "${1}" "${NTFY_SERVER_URL}/${NTFY_CHANNEL}"
}

get_value() {
  jq "$1" <(echo "$JSON") | tr -d '"'
}

JSON=$1
ARTIST=$(get_value ".Artist")
YEAR=$(get_value ".Year")
TYPE=$(get_value ".NotificationType")
ITEM_TYPE=$(get_value ".ItemType")
ITEM_NAME=$(get_value ".Name")
NOTIFICATION_USERNAME=$(get_value ".NotificationUsername")
PLUGIN_NAME=$(get_value ".PluginName")
PLUGIN_VERSION=$(get_value ".PluginVersion")
SERVER=$(get_value .ServerName)
VERSION=$(get_value .ServerVersion)
SERIES_NAME=$(get_value .SeriesName)
EPISODE_NUMBER=$(get_value .EpisodeNumber00)
SEASON_NUMBER=$(get_value .SeasonNumber00)
PROVIDER_TMDB=$(get_value .Provider_tmdb)
PROVIDER_TVDB=$(get_value .Provider_tvdb)
TAGS="media"

case "$TYPE" in
  PluginUninstalled)
    PRIORITY="2"
    MESSAGE="Plugin $PLUGIN_NAME $PLUGIN_VERSION was uninstalled."
    ;;
  ItemAdded)
    PRIORITY="2"
    case "$ITEM_TYPE" in
      MusicAlbum)
	[ "$ARTIST" = "null" ] && ARTIST="Various Artists"
	MESSAGE="New music has been added: $ITEM_NAME by $ARTIST ($YEAR)."
	;;
      Episode)
	MESSAGE="$SERIES_NAME ${SEASON_NUMBER}x${EPISODE_NUMBER} - $ITEM_NAME ($YEAR) has been added."
	ACTION="view, TMDB, ${TMDB_URL}/series/${PROVIDER_TVDB}"
	;;
      Movie)
	MESSAGE="$ITEM_NAME ($YEAR) has been added."
	ACTION="view, TMDB, ${TMDB_URL}/movie/${PROVIDER_TMDB}"
	;;
      # ignore these
      Audio | Season | Series)
	;;
      *)
	MESSAGE="Item of type $ITEM_TYPE with the name $ITEM_NAME has been added to the library."
        ;;
    esac
    ;;
  AuthenticationFailure)
    PRIORITY="5"
    MESSAGE="Authentication for user $NOTIFICATION_USERNAME has failed."
    ;;
  PendingRestart)
    PRIORITY="4"
    MESSAGE="Server needs to be restarted."
    ;;
  UserDeleted)
    PRIORITY="3"
    MESSAGE="User $NOTIFICATION_USERNAME has been deleted."
    ;;
  UserLockedOut)
    PRIORITY="5"
    MESSAGE="User $NOTIFICATION_USERNAME has been locked out."
    ;;
  *)
    PRIORITY="3"
    MESSAGE="Unrecognized NoticationType. See the logs."
    ;;
esac

# MESSAGE is empty if a NotificationType or ItemType was ignored
if [[ -z "${MESSAGE:-}" ]]; then
  echo "MESSAGE is empty. Ignoring this notification."
  exit 0
fi

notify "${MESSAGE:-Empty message.}" "Jellyfin $VERSION ($SERVER)" "${ACTION:-}" "${TAGS:-media}" "${PRIORITY:-3}"