#!/bin/bash --login

# Make sure there's no already running session.
if systemctl --user -q is-active niri.service; then
  echo 'A niri session is already running.'
  exit 1
fi

# Reset failed state of all user units.
systemctl --user reset-failed

# Set the current desktop for xdg-desktop-portal.
export XDG_CURRENT_DESKTOP=niri

# Ensure the session type is set to Wayland for xdg-autostart apps.
export XDG_SESSION_TYPE=wayland

# Import the login manager environment.
systemctl --user import-environment

# DBus activation environment is independent from systemd. While most of
# dbus-activated services are already using `SystemdService` directive, some
# still don't and thus we should set the dbus environment with a separate
# command.
if hash dbus-update-activation-environment 2>/dev/null; then
    dbus-update-activation-environment --all
fi

# Start niri and wait for it to terminate.
systemctl --user --wait start niri.service

# Unset environment that we've set.
systemctl --user unset-environment WAYLAND_DISPLAY XDG_SESSION_TYPE XDG_CURRENT_DESKTOP