#!/bin/sh

# pinch send youtube audio to mpd

# script usage
usage()
{
echo "\
$(basename "$0") -i url"
exit 2
}

# error messages
INVALID_OPT_ERR='Invalid option:'
REQ_ARG_ERR='requires an argument'
WRONG_ARGS_ERR='wrong number of arguments passed to script'

# mpd host socket
# MPD_HOST set in ~/.zshenv to "/run/user/1000/mpd/socket"
host="${MPD_HOST}"

# if script is run arguments pass and check the options with getopts,
# else display script usage and exit
[ $# -gt 0 ] || usage "${WRONG_ARGS_ERR}"

# getopts check and validate options
while getopts ':i:h' opt
do
  case ${opt} in
     i) input="${OPTARG}";;
     h) usage;;
     \?) usage "${INVALID_OPT_ERR} ${OPTARG}" 1>&2;;
     :) usage "${INVALID_OPT_ERR} ${OPTARG} ${REQ_ARG_ERR}" 1>&2;;
  esac
done
shift $((OPTIND-1))

# get the audio url and title
url=$(yt-dlp --no-check-certificate --no-playlist -e -f bestaudio -g "${input}")
link=$(echo "${url}" | awk -F' ' '/https:/ {print $1}') # audio url
name=$(echo "${url}" | awk -F'https:' '{print $1}') # name of song

# yt function
yt () {
    if [ -z "$(mpc --host="${host}" current)" ]; then # nothing playing
        if [ -z "$(mpc --host="${host}" playlist)" ]; then # playlist empty
           mpc --host="${host}" add "${link}"
           mpc --host="${host}" play 
	   notify-send "Now Playing ♫" "${name}"
	else # playlist not empty so clear add url and play
           mpc --host="${host}" clear
	   mpc --host="${host}" add "${link}"
           mpc --host="${host}" play 
	   notify-send "Now Playing ♫" "${name}"
	fi
    else # audio playing insert url and play next
        mpc --host="${host}" add "${link}" 
#	mpc --host="${host}" next
	notify-send "Queuing ♫" "${name}" 2>/dev/null
    fi
}

# run the yt function with the url
yt "${url}"