#!/bin/sh

set -eu

ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
APP_NAME="CrossSubtitle-AI"
VERSION=$(node -p "require('$ROOT_DIR/package.json').version")
TARGET_ARCH=${TARGET_ARCH:-$(uname -m)}
RUST_TARGET=""

case "$TARGET_ARCH" in
  arm64)  RUST_TARGET="aarch64-apple-darwin"  ;;
  x86_64) RUST_TARGET="x86_64-apple-darwin"   ;;
  *)
    echo "Unsupported architecture: $TARGET_ARCH"
    exit 1
    ;;
esac

if [ "$(uname -m)" != "$TARGET_ARCH" ]; then
  TARGET_DIR="$ROOT_DIR/src-tauri/target/${RUST_TARGET}"
else
  TARGET_DIR="$ROOT_DIR/src-tauri/target/release"
fi
APP_PATH="$TARGET_DIR/bundle/macos/$APP_NAME.app"
DMG_DIR="$TARGET_DIR/bundle/dmg"
DMG_PATH="$DMG_DIR/${APP_NAME}_${VERSION}_${TARGET_ARCH}.dmg"
STAGING_DIR=$(mktemp -d "${TMPDIR:-/tmp}/crosssubtitle-dmg.XXXXXX")

cleanup() {
  rm -rf "$STAGING_DIR"
}

trap cleanup EXIT

cd "$ROOT_DIR"

export TARGET_ARCH
npm run prepare-ffmpeg-macos
npm run prepare-licenses-macos

TAURI_BUILD_OPTS="--bundles app"
if [ "$(uname -m)" != "$TARGET_ARCH" ]; then
  TAURI_BUILD_OPTS="$TAURI_BUILD_OPTS --target $RUST_TARGET"
fi
npm run tauri -- build $TAURI_BUILD_OPTS

mkdir -p "$DMG_DIR"
rm -f "$DMG_PATH"
ditto "$APP_PATH" "$STAGING_DIR/$APP_NAME.app"
ln -s /Applications "$STAGING_DIR/Applications"

hdiutil create \
  -volname "$APP_NAME" \
  -srcfolder "$STAGING_DIR" \
  -ov \
  -format UDZO \
  "$DMG_PATH"

printf 'DMG created: %s\n' "$DMG_PATH"