#!/usr/bin/env bash
set -e

STATE="$HOME/.soundboard"
mkdir -p "$STATE"

# Defaults
MIC=$(pactl get-default-source)

# Check if soundboard is already started
if [[ -f "$STATE/nullsink.id" || -f "$STATE/remap.id" || -f "$STATE/micloop.id" ]]; then
    echo "Soundboard already started"
    exit 0
fi

# 1. Create a null sink (soundboard mixer)
if ! pactl list short sinks | grep -q soundboard_sink; then
    SINK_ID=$(pactl load-module module-null-sink \
        sink_name=soundboard_sink \
        sink_properties=device.description=SoundboardSink)
    echo "$SINK_ID" > "$STATE/nullsink.id"
fi

# 2. Create virtual microphone
if ! pactl list short sources | grep -q soundboard_mic; then
    SRC_ID=$(pactl load-module module-remap-source \
        master=soundboard_sink.monitor \
        source_name=soundboard_mic \
        source_properties=device.description=SoundboardMic)
    echo "$SRC_ID" > "$STATE/remap.id"
fi

# 3. Route REAL mic into the mixer
if ! pactl list short modules | grep -q "module-loopback.*$MIC"; then
    LOOP_ID=$(pactl load-module module-loopback \
        source="$MIC" \
        sink=soundboard_sink \
        latency_msec=5)
    echo "$LOOP_ID" > "$STATE/micloop.id"
fi

# 4. Set virtual mic as default
pactl set-default-source soundboard_mic

echo "Soundboard ready."
echo "Select 'SoundboardMic' in apps if needed."