#!/bin/bash

LOCKFILE="$HOME/.mediawrap.lock"
PULSESTATE="$HOME/.pulseaudio.state"

(
if ! flock -w 10 -x 200; then
    echo "Failed to get a lock!"
    exit 1
fi
echo "got lock"

# Unmute everything and turn volume to full
if [ "$1" = "--max-volume" ]; then
    echo "max volume"
    max_volume=1
    shift
    pacmd 'dump' | grep 'set-sink' > "$PULSESTATE"
    cat "$PULSESTATE" | grep 'set-sink-mute' | awk '{print $2;}' | \
        while read device; do
            pacmd "set-sink-volume $device 0x10000" > /dev/null
            pacmd "set-sink-mute $device no" > /dev/null
        done
fi

# Switch volume keys to F8/F9/F10 with xmodmap
if [ "$1" = "--switch-volume-keys" ]; then
    echo "switch volume"
    switch_volume=1
    shift
    xmodmap -e 'keycode 121 = F8'  # Mute
    xmodmap -e 'keycode 122 = F9'  # VolDown
    xmodmap -e 'keycode 123 = F10' # VolUp
fi

# Stop XFCE4 volume control
if [ "$1" = "--pause-xfce4-volumed" ]; then
    echo "killall xfce4-volumed-pulse"
    pause_xfce4_volumed=1
    shift
    killall xfce4-volumed-pulse
fi

# Run the program
"$@" &> /dev/null


# Restore volume levels and mute status
if [ -n "$max_volume" ]; then
    cat "$PULSESTATE" | pacmd > /dev/null
fi

# Restore volume keys
if [ -n "$switch_volume" ]; then
    xmodmap -e 'keycode 121 = XF86AudioMute'
    xmodmap -e 'keycode 122 = XF86AudioLowerVolume'
    xmodmap -e 'keycode 123 = XF86AudioRaiseVolume'
fi

# Restore volume keys
if [ -n "$pause_xfce4_volumed" ]; then
    xfce4-volumed-pulse
fi

) 200>"$LOCKFILE"

# Cleanup so other programs can start
rm -f "$LOCKFILE"