#!/bin/bash

# omarchy:summary=Install Battle.net standalone via umu-launcher + GE-Proton (no Steam, no Lutris, no Heroic).
# omarchy:requires-sudo=true

set -e

PREFIX="$HOME/Games/battlenet"
LAUNCHER="$PREFIX/drive_c/Program Files (x86)/Battle.net/Battle.net Launcher.exe"
INSTALLER_URL="https://downloader.battle.net/download/getInstallerForGame?os=win&gameProgram=BATTLENET_APP&version=Live"

echo "Installing Battle.net..."

omarchy-pkg-add umu-launcher
omarchy-install-gaming-gpu-lib32

# Detect a half-finished prefix from a closed/crashed previous run and offer
# to wipe it before trying again. Battle.net's installer isn't idempotent.
if [[ -d $PREFIX && ! -f $LAUNCHER ]]; then
  echo
  echo "Found a partial Battle.net install at $PREFIX (no Launcher.exe)."
  echo "Battle.net's installer can't resume from this state."
  if gum confirm "Wipe the partial prefix and start fresh?"; then
    pkill -f "$PREFIX" 2>/dev/null || true
    sleep 1
    rm -rf "$PREFIX"
  else
    echo "Aborting. Re-run when ready to wipe."
    exit 1
  fi
fi

mkdir -p "$PREFIX"

export WINEPREFIX="$PREFIX"
export PROTONPATH=GE-Proton
export GAMEID=umu-battlenet
export PROTON_VERB=run

if [[ -f $LAUNCHER ]]; then
  echo "Battle.net is already installed at $PREFIX."
  launched_installer=0
else
  cache_dir="$HOME/.cache/omarchy"
  mkdir -p "$cache_dir"
  installer="$cache_dir/Battle.net-Setup.exe"

  echo
  echo "Downloading Battle.net installer..."
  curl --fail --location --retry 3 "$INSTALLER_URL" --output "$installer"

  cat <<'EOF'

Launching the Battle.net setup wizard. Click through it normally — the
default install path is fine. When it finishes, Battle.net will be in your
app launcher.

EOF

  log="/tmp/omarchy-battlenet-installer.log"
  setsid -f sh -c "umu-run '$installer' >'$log' 2>&1" </dev/null >/dev/null 2>&1
  echo "Installer log: $log"
  launched_installer=1
fi

mkdir -p "$HOME/.local/share/applications"
install -m 644 "$OMARCHY_PATH/default/applications/battlenet.desktop" \
  "$HOME/.local/share/applications/battlenet.desktop"
update-desktop-database "$HOME/.local/share/applications" 2>/dev/null || true

if (( launched_installer )); then
  cat <<EOF

The Battle.net installer is running in the background. After it finishes,
find Battle.net in your app launcher, or run:

  omarchy-launch-battlenet

EOF
else
  cat <<EOF

Battle.net is installed. Find it in your app launcher, or run:

  omarchy-launch-battlenet

EOF
fi