#!/bin/bash

# Switch between audio outputs while preserving the mute status. By default mapped to Super + Mute.

focused_monitor="$(hyprctl monitors -j | jq -r '.[] | select(.focused == true).name')"

sinks=$(pactl -f json list sinks | jq '[.[] | select((.ports | length == 0) or ([.ports[]? | .availability != "not available"] | any))]')
sinks_count=$(echo "$sinks" | jq '. | length')

if (( sinks_count == 0 )); then
    swayosd-client \
        --monitor "$focused_monitor" \
        --custom-message "No audio devices found"
    exit 1
fi

current_sink_name=$(pactl get-default-sink)
current_sink_index=$(echo "$sinks" | jq -r --arg name "$current_sink_name" 'map(.name) | index($name)')

if [[ $current_sink_index != "null" ]]; then
    next_sink_index=$(((current_sink_index + 1) % sinks_count))
else
    next_sink_index=0
fi

next_sink=$(echo "$sinks" | jq -r ".[$next_sink_index]")
next_sink_name=$(echo "$next_sink" | jq -r '.name')

next_sink_description=$(echo "$next_sink" | jq -r '.description')
if [[ $next_sink_description == "(null)" ]] || [[ $next_sink_description == "null" ]] || [[ -z $next_sink_description ]]; then
    # For Bluetooth devices, the friendly name is on the Device entry (device.id), not the Sink entry (object.id)
    device_id=$(echo "$next_sink" | jq -r '.properties."device.id"')
    if [[ $device_id != "null" ]] && [[ -n $device_id ]]; then
        next_sink_description=$(wpctl status | grep -E "^\s*│?\s+${device_id}\." | sed -E 's/^.*[0-9]+\.\s+//' | sed -E 's/\s+\[.*$//')
    fi
    # Fall back to object.id lookup if device.id didn't yield a result
    if [[ -z $next_sink_description ]]; then
        sink_id=$(echo "$next_sink" | jq -r '.properties."object.id"')
        next_sink_description=$(wpctl status | grep -E "\s+\*?\s+${sink_id}\." | sed -E 's/^.*[0-9]+\.\s+//' | sed -E 's/\s+\[.*$//')
    fi
fi

next_sink_volume=$(echo "$next_sink" | jq -r \
    '.volume | to_entries[0].value.value_percent | sub("%"; "")')
next_sink_is_muted=$(echo "$next_sink" | jq -r '.mute')

if [[ $next_sink_is_muted = "true" ]] || (( next_sink_volume == 0 )); then
    icon_state="muted"
elif (( next_sink_volume <= 33 )); then
    icon_state="low"
elif (( next_sink_volume <= 66 )); then
    icon_state="medium"
else
    icon_state="high"
fi

next_sink_volume_icon="sink-volume-${icon_state}-symbolic"

if [[ $next_sink_name != $current_sink_name ]]; then
    pactl set-default-sink "$next_sink_name"
fi

swayosd-client \
    --monitor "$focused_monitor" \
    --custom-message "$next_sink_description" \
    --custom-icon "$next_sink_volume_icon"