#!/bin/sh

# Based on Niri's session script.

if [ -n "$SHELL" ] \
    && grep -q "$SHELL" /etc/shells \
    && ! (echo "$SHELL" | grep -q "false") \
    && ! (echo "$SHELL" | grep -q "nologin")
then
    if [ "$1" != '-l' ]; then
        exec bash -c "exec -l '$SHELL' -c '$0 -l $*'"
    else
        shift
    fi
fi

# Ensure Catacomb session is not running yet.
if systemctl --user -q is-active catacomb.service; then
    echo 'A Catacomb session is already running.'
    exit 1
fi

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

# 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 Catacomb and wait for it to terminate.
systemctl --user --wait start catacomb.service

# Force stop of graphical-session.target.
systemctl --user start --job-mode=replace-irreversibly catacomb-shutdown.target

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