#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
MISE_BIN="${MISE_BIN:-$HOME/.local/bin/mise}"

# Default to the on-disk BDMV folder, not the ISO.
#
# When libbluray opens a UDF *image* (.iso), its BD-J stack must first copy
# BDMV/JAR/00000.jar out of the image into a temp cache dir. On this setup that
# write is refused by libbluray's BD-J SecurityManager (usingUdf=true, no disc
# root), so the JAR never mounts, the Xlet class is never found, and VLC falls
# back to playing the raw playlist with no menu. Opening the *folder* lets
# libbluray read the JAR directly, so the Xlet (menu) loads. Pass an explicit
# path to override (folder or .iso).
TARGET="${1:-$ROOT_DIR/build/disc}"

if [[ -d "$TARGET" && ! -d "$TARGET/BDMV" ]]; then
  echo "Not a BDMV folder (no BDMV/ inside): $TARGET" >&2
  echo "Run: make" >&2
  exit 1
fi

if [[ ! -e "$TARGET" ]]; then
  echo "Missing disc target: $TARGET" >&2
  echo "Run: make" >&2
  exit 1
fi

if [[ -x "$MISE_BIN" ]]; then
  JDK8_HOME="$("$MISE_BIN" where java@temurin-8.0.502+7 2>/dev/null || true)"
else
  JDK8_HOME=""
fi

if [[ -z "$JDK8_HOME" && -d "$ROOT_DIR/vendor/bdj-sdk/host/jdk8" ]]; then
  JDK8_HOME="$(cd "$ROOT_DIR/vendor/bdj-sdk/host/jdk8" && pwd)"
fi

if [[ -n "$JDK8_HOME" ]]; then
  export JAVA_HOME="$JDK8_HOME/jre"
  export JDK_HOME="$JDK8_HOME"
  export LD_LIBRARY_PATH="$JDK8_HOME/jre/lib/amd64/server:${LD_LIBRARY_PATH:-}"
fi

LOCAL_VLC_PLUGINS="$ROOT_DIR/tools/vlc-plugins/usr/lib/vlc/plugins"
if [[ -d "$LOCAL_VLC_PLUGINS" ]]; then
  export VLC_PLUGIN_PATH="$LOCAL_VLC_PLUGINS:/usr/lib/vlc/plugins${VLC_PLUGIN_PATH:+:$VLC_PLUGIN_PATH}"
fi

if [[ -d "$TARGET" ]]; then
  ABS_TARGET="$(cd "$TARGET" && pwd)"
else
  ABS_TARGET="$(cd "$(dirname "$TARGET")" && pwd)/$(basename "$TARGET")"
fi
exec vlc --reset-plugins-cache --bluray-menu "bluray://$ABS_TARGET"