#!/bin/bash
# Sound through PipeWire. Installs ~/.local/bin/volume, which changes the
# volume by 5%, never above 100%, unmutes on a change and refreshes the status
# bar right away. Keys: the volume and mute keys, or Super+F10 (mute), Super+F11
# (down) and Super+F12 (up) for keyboards without them.
# The microphone is muted at every login (bin/radios), so it is off until you
# switch it on: Wren menu > Microphone, wrenctl --mic on, or the mic key.
# That is muting in software; see man wrenctl.
# Usage: bash pipewire-audio.sh [--remove | --manual]
# summary: Sound: PipeWire, volume keys, microphone mute
# security: some
# category: devices
# status: apt:pipewire-audio
. "$(dirname -- "${BASH_SOURCE[0]}")/../lib.sh"
if [ "${1:-}" = --manual ]; then print_manual; exit; fi
need_user

if [ "${1:-}" = --remove ]; then
    remove_snippet audio
    remove_bin volume
    apt_purge pipewire-audio
    # (the sandboxes keep its programs for a sound server of their own; yours stops)
    user_audio_sync
    exit
fi

say "Installing pipewire-audio"
# (PipeWire brings pw-play, which the timer and alarm clock ring with; the sound
# they play is Wren Linux's own, data/alarm.wav)
apt_install pipewire-audio
# (on for every user again, if a sandbox's install had switched it off: pipewire-audio
# isn't one of the packages apt_install looks for)
user_audio_sync

say "Starting the user audio services"
systemctl --user enable --now pipewire.socket pipewire-pulse.socket wireplumber.service ||
    warn "Couldn't start them now; they start at your next login."

install_bin volume
# the microphone switch (the Wren menu uses it too)
install_bin radios

# The stock config binds the media keys to pactl, which isn't installed
put_snippet audio <<'EOF'
# Volume (Wren Linux extras/pipewire-audio.sh)
bindsym --locked XF86AudioRaiseVolume exec ~/.local/bin/volume up
bindsym --locked XF86AudioLowerVolume exec ~/.local/bin/volume down
bindsym --locked XF86AudioMute exec ~/.local/bin/volume mute
bindsym --locked XF86AudioMicMute exec ~/.local/bin/volume micmute
bindsym $mod+F10 exec ~/.local/bin/volume mute
bindsym $mod+F11 exec ~/.local/bin/volume down
bindsym $mod+F12 exec ~/.local/bin/volume up
# The microphone starts muted. Sound is still starting at login, so it waits for it.
exec ~/.local/bin/radios mic off --wait
EOF
# Muted now too, not only at the next login. PipeWire was only just started, so the
# microphone may not be there yet: wait for it, as at login, and say so if it didn't work
if "$BIN/radios" mic off --wait >/dev/null; then
    note "The microphone is off until you switch it on (wrenctl --mic on, or the Wren menu)."
elif ! "$BIN/radios" list 2>/dev/null | grep -q '^mic '; then
    note "No microphone showed up; when one does, it is muted at your next login."
else
    warn "The microphone is still on: muting it didn't work. Switch it off: wrenctl --mic off"
    warn "(the bar says \"mic ON\" while it is on; wpctl status shows what PipeWire has)"
fi
note "Check the sound with: wpctl status"