#!/bin/bash

# A simple notify script for now-playing songs on mpd. This script uses
# notify-send and mpc to get the current song information.

# Requirements (* = optional)
# - mpd
# - mpc
# - notify-send (libnotify)
# * ImageMagick (convert)

# Author : Wolfgang Mueller
# You can use, edit and redistribute this script in any way you like.
# (Just make sure not to hurt any kittens)
#
# Contributors:
# https://github.com/graysky2/mpdnotify

# make sure env var is setup correctly
[[ -z "$XDG_CONFIG_HOME" ]] && \
    XDG_CONFIG_HOME="$HOME/.config"

CFG_FILE="$XDG_CONFIG_HOME/mpdnotify.conf"

if [[ ! -f "$CFG_FILE" ]]; then
    echo " No config file found."
    echo " Create $XDG_CONFIG_HOME/mpdnotify.conf for this user."
    exit 1
else
    . "$CFG_FILE"
fi

#--------------------------------------------------------------------

escape() {
    echo "$1" | sed 's/&/\&amp;/g; s/</\&lt;/g; s/>/\&gt;/g;'
}

# determine file
file="$(mpc current -f %file%)"

# check if anything is playing at all
[[ -z $file ]] && exit 1

# Get title info
title="$(mpc current -f "$A_FORMAT")"

# Get song info
song="$(mpc current -f "$T_FORMAT")"

# Art directory
art="$MUSIC_DIR/${file%/*}"

# find every file that matches IMG_REG set the first matching file to be the
# cover.
cover="$(find "$art/" -maxdepth 1 -type f | egrep -i -m1 "$IMG_REG")"

# when no cover is found, use DEFAULT_ART as cover
cover="${cover:=$DEFAULT_ART}"

text="$(escape "$title\n$song")"

# check if art is available
# --hint=int:transient:1 is needed, because gnome-shell will keep the notification in its bar.
# using 'hint' they'll be removed automatically (gnome-shell 3.01)
if [[ -n $cover ]]; then

    if [[ -n $COVER_RESIZE ]]; then
        convert "$cover" -thumbnail $COVER_RESIZE -gravity center \
            -background "$COVER_BACKGROUND" -extent $COVER_RESIZE "$TEMP_PATH" >> "$LOGFILE" 2>&1
        cover="$TEMP_PATH"
    fi

    notify-send -u $URGENCY -t 5000 --hint=int:transient:1 "$NOTIFY_TITLE" "$text" -i "$cover" >> "$LOGFILE" 2>&1
else
    notify-send -u $URGENCY -t 5000 --hint=int:transient:1 "$NOTIFY_TITLE" "$text" >> "$LOGFILE" 2>&1
fi