#!/usr/bin/env bash
set -euo pipefail
LOGFILE="$HOME/.local/logs/gamescope.log"
export PATH="$HOME/.local/bin:$PATH"

log() { echo "[$(date --iso-8601=seconds)] $*" | tee -a "$LOGFILE"; }

# SDDM sets this to wayland but apps using Gamescope must use x11
export XDG_SESSION_TYPE=x11

# Update the enviroment with DESKTOP_SESSION and all XDG variables
log "Updating systemd user environment with XDG variables"
dbus-update-activation-environment --systemd DESKTOP_SESSION `env | grep ^XDG_ | cut -d = -f 1`

# This makes it so that xdg-desktop-portal doesn't find any portal implementations and doesn't start them and makes
# them crash/exit because the dbus env has no DISPLAY. In turn this causes dbus calls to the portal which don't rely
# on implementations to hang (such as SDL talking to the real time portal)
# Plasma resets this variable when it starts
systemctl --user set-environment XDG_DESKTOP_PORTAL_DIR=""

# Remove these as they prevent gamescope-session from starting correctly
systemctl --user unset-environment DISPLAY XAUTHORITY

# If this shell script is killed then stop gamescope-session
trap 'systemctl --user stop gamescope-session.target' HUP INT TERM

# Start gamescope-session and wait
log "Starting Gamescope Session"
systemctl --user --wait start gamescope-session.target &
wait
log "Gamescope Session Ended - Performing Final Cleanup"

# The 'wait' above blocks until gamescope-session.target stops
# We want to wait until *everything* has finished. We know systemd will have
# queued a stop job on graphical-session-pre aleady
# by also queuing up a job we can block until that completes
systemctl --user stop graphical-session-pre.target
log "Gamescope Session Ended - Cleanup Complete"