#!/bin/bash

. bot.properties
input=".bot.cfg"
echo "Starting session: $(date "+[%y:%m:%d %T]")">$log
echo "NICK $nick" > $input
echo "USER $user" >> $input
echo "MODE $nick +B" >> $input
echo "JOIN #$channel" >> $input


function save_info {
  now_playing=$(<$npfile)
}

function parse_dj {
  grep -Eo '^\([^)]*\)' $npfile | sed 's/[()]//g' | xargs
}

# save info
save_info
dj=$(parse_dj)

# main loop
tail -f $input | telnet $server $port | while read res
do
  # log the session
  echo "$(date "+[%y:%m:%d %T]")$res" >> $log

  # new dj!
  if [[ $dj != $(parse_dj) ]]; then
    dj=$(parse_dj)
    if [[ ! -z "${dj}" ]]; then
      echo "PRIVMSG #$channel :$dj is now online! tune in now here: https://bhh.sh/listen" >> $input
      while read -u 10 subscriber; do
        echo "PRIVMSG $subscriber :$dj is now online! tune in now here: https://bhh.sh/listen" $input
      done 10< subscribers.txt
      TOOT_JSON_PATH=. toot "dj $dj is now streaming live on https://tilderadio.org! tune in here: https://bhh.sh/listen"
    fi
  fi

  # now playing
  if [[ $now_playing != "$(<$npfile)" ]]; then
    save_info
    echo -e "PRIVMSG #$channel :\x0303$now_playing" >> $input
  fi

  # do things when you see output
  case "$res" in
    # respond to ping requests from the server
    PING*)
      echo "$res" | sed "s/I/O/" >> $input
    ;;

    # make sure we're joined
    *376*|*404*)
      echo "JOIN #$channel" >> $input
    ;;

    # run when a message is seen
    PRIVMSG*)
      echo "$res"
      who=$(echo "$res" | perl -pe "s/:(.*)\!.*@.*/\1/")
      from=$(echo "$res" | perl -pe "s/.*PRIVMSG (.*[#]?([a-zA-Z]|\-)*) :.*/\1/")
      echo $who $from

      # "#" would mean it's a channel
      if [ "$(echo "$from" | grep '^#')" ]; then
        test "$(echo "$res" | grep ":$nick:")" || continue
      else
        from=$who
      fi
      com=$(echo "$will" | cut -d " " -f1)

      case "$com" in
        subscribe)
          echo $from >> subscribers.txt
          echo "PRIVMSG $from :i'll send you a direct message when a dj starts streaming!" >> $input
        ;;

        unsubscribe)
          sed -i "/$from/d" subscribers.txt
          echo "PRIVMSG $from :i'll stop sending you updates." >> $input
        ;;

        np)
          echo "PRIVMSG $from :$now_playing" >> $input
        ;;

        dj)
          echo "PRIVMSG $from :${dj:-"no one"} is on the air now" >> $input
        ;;

        help)
          echo "PRIVMSG $from :hey hi, my commands are subscribe, unsubscribe, np, and dj"
        ;;

        *)
          echo "no command: $res"
        ;;

      esac
    ;;

    # else
    *)
      echo "$res"
    ;;
  esac
done