#!/usr/bin/env bash
# Run the LÖVE2D Pokémon Red port (macOS-friendly).
#
# Assumes scripts/setup.sh has been run once for at least one game (generated
# data present and LÖVE installed). Extra arguments are passed through to LÖVE.
#
# Link play is peer-to-peer (lua-enet, bundled with LÖVE): one player
# picks HOST A GAME in START > LINK and reads out the address shown;
# the other picks JOIN A GAME and types it in.  UDP port 7777 by
# default (override with POKEPORT_LINK_PORT on both sides).

set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"

fail() { printf '\033[1;31merror:\033[0m %s\n' "$*" >&2; exit 1; }

if [ ! -f "$ROOT/data/generated/maps.lua" ] \
    && [ ! -f "$ROOT/blue/data/generated/maps.lua" ] \
    && [ ! -f "$ROOT/yellow/data/generated/maps.lua" ]; then
  fail "generated data missing,  run scripts/setup.sh first"
fi

find_love() {
  command -v love >/dev/null 2>&1 && { echo "love"; return; }
  for app in "/Applications/love.app" "$HOME/Applications/love.app"; do
    if [ -x "$app/Contents/MacOS/love" ]; then
      echo "$app/Contents/MacOS/love"
      return
    fi
  done
  return 1
}

find_love12() {
  local app version
  for app in "${LOVE_APP:-}" "$ROOT/.bazinga/love12/love.app" "/Applications/love12.app" "$HOME/Applications/love12.app" \
    "/Applications/love.app" "$HOME/Applications/love.app"; do
    [ -n "$app" ] || continue
    if [ -x "$app/Contents/MacOS/love" ]; then
      version="$(/usr/libexec/PlistBuddy -c 'Print :CFBundleShortVersionString' "$app/Contents/Info.plist" 2>/dev/null || true)"
      if printf '%s' "$version" | grep -Eq '^12(\.|$)' \
        && otool -L "$app/Contents/Frameworks/love.framework/love" 2>/dev/null | grep -q '/Metal.framework/'; then
        echo "$app/Contents/MacOS/love"
        return
      fi
    fi
  done
  return 1
}

if [ "$(uname -s)" = "Darwin" ]; then
  LOVE_BIN="$(find_love12)" \
    || fail "LÖVE 12 with Metal not found,  run scripts/setup.sh or scripts/build_love_macos.sh --fetch"
else
  LOVE_BIN="$(find_love)" \
    || fail "LÖVE not found,  run scripts/setup.sh (or install from https://love2d.org)"
fi

# SDL2 on Wayland crashes during desktop drag-and-drop in certain compositors;
# default to X11/XWayland when available to ensure rock-solid drag-drop stability.
if [ -n "${WAYLAND_DISPLAY:-}" ] && [ -z "${SDL_VIDEODRIVER:-}" ]; then
  export SDL_VIDEODRIVER=x11
fi

exec "$LOVE_BIN" "$ROOT" "$@"