#!/bin/sh

filter() {
    artist_track=""
    status_icon=""
    modes=""
    track_info_captured=false

    # Read input line by line
    while IFS= read -r line; do
        # Capture the first line with artist and track name
        if [ "$track_info_captured" = false ]; then
            # Check if the line contains typical status info (e.g., "volume:") instead of artist-track
            if echo "$line" | grep -q "volume:"; then
                # No song is playing, exit with empty output
                echo ""
                return
            fi
            artist_track="$line"
            track_info_captured=true
            continue
        fi

        # Check for track status (paused or playing)
        if echo "$line" | grep -q "\[paused\]"; then
            status_icon=" "
        elif echo "$line" | grep -q "\[playing\]"; then
            status_icon=""
        fi

        # Check for modes: consume, random, repeat, single
        if echo "$line" | grep -q "consume: on"; then
            modes="${modes} "
        fi
        if echo "$line" | grep -q "random: on"; then
            modes="${modes} "
        fi
        if echo "$line" | grep -q "repeat: on"; then
            modes="${modes} "
        fi
        if echo "$line" | grep -q "single: on"; then
            modes="${modes}1 "
        fi
    done

    # After all lines processed, output the result only if artist_track is valid
    if [ "$track_info_captured" = true ] && [ -n "$artist_track" ]; then
        # Trim trailing space from modes if any
        modes=$(echo "$modes" | sed 's/[[:space:]]*$//')

        # Only add "|" if there are modes
        if [ -n "$modes" ]; then
            echo "$status_icon$artist_track | $modes"
        else
            echo "$status_icon$artist_track"
        fi
    else
        echo ""
    fi
}

pidof -x sb-mpdup >/dev/null 2>&1 || sb-mpdup >/dev/null 2>&1 &

case $BLOCK_BUTTON in
  1) mpc status | filter ; setsid -f "$TERMINAL" -e rmpc >/dev/null 2>&1 < /dev/null;;  # right click, pause/unpause
  2) mpc toggle | filter ;;  # right click, pause/unpause
  3) mpc status | filter ; notify-send " Music module" "\- Shows mpd song playing.
-  paused.
-  consume mode.
-  shuffle mode.
-  repeat mode.
- 1 single mode.
- Left click opens rmpc.
- Middle click pauses.
- Scroll changes track.";;  # right click, pause/unpause
  4) mpc prev   | filter ;;  # scroll up, previous
  5) mpc next   | filter ;;  # scroll down, next
  8) mpc status | filter ; setsid -f "$TERMINAL" -e "$EDITOR" "$0" >/dev/null 2>&1 < /dev/null ;;
  *) mpc status | filter ;;
esac