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

# Play the disc's feature straight from the ISO (or a BDMV folder) with mpv.
#
# mpv links libbluray and plays Blu-ray *titles/playlists* directly. It does NOT
# run BD-J -- there is no menu, no Xlet, no Java involved. This is purely "open
# the disc and watch the movie", and unlike the VLC/BD-J path it Just Works with
# no JVM or cache setup. Use scripts/run-vlc.sh if you want the BD-J menu.
#
# Pass a path to override the default (an .iso image or a BDMV folder).

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
TARGET="${1:-$ROOT_DIR/build/adjustments.iso}"

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

if [[ -d "$TARGET" ]]; then
  DEVICE="$(cd "$TARGET" && pwd)"
else
  DEVICE="$(cd "$(dirname "$TARGET")" && pwd)/$(basename "$TARGET")"
fi

# bd://longest plays the main title; --bluray-device points at the image/folder.
exec mpv --bluray-device="$DEVICE" "bd://longest"