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

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
if [[ -d "$ROOT_DIR/ManeshTraderMac.app" ]]; then
  APP_BUNDLE_DEFAULT="$ROOT_DIR/ManeshTraderMac.app"
else
  APP_BUNDLE_DEFAULT="$ROOT_DIR/ManeshTrader.app"
fi
APP_BUNDLE="${APP_BUNDLE_PATH:-$APP_BUNDLE_DEFAULT}"

if ! command -v create-dmg >/dev/null 2>&1; then
  echo "create-dmg not found. Install with: brew install create-dmg" >&2
  exit 1
fi

if [[ ! -d "$APP_BUNDLE" ]]; then
  echo "App bundle not found: $APP_BUNDLE" >&2
  echo "Set APP_BUNDLE_PATH to a built .app bundle or build one first." >&2
  exit 1
fi

APP_FILENAME="$(basename "$APP_BUNDLE")"
APP_NAME="${APP_FILENAME%.app}"
TS="$(date +%Y%m%d-%H%M%S)"
STAGE_DIR="$ROOT_DIR/dist-$TS"
OUT_DMG="$ROOT_DIR/${APP_NAME}-$TS.dmg"

mkdir -p "$STAGE_DIR"
cp -R "$APP_BUNDLE" "$STAGE_DIR/"

create-dmg \
  --volname "${APP_NAME} Installer" \
  --window-size 600 400 \
  --icon-size 120 \
  --icon "$APP_FILENAME" 175 190 \
  --icon "Applications" 425 190 \
  --hide-extension "$APP_FILENAME" \
  --app-drop-link 425 190 \
  "$OUT_DMG" \
  "$STAGE_DIR"

echo "Created installer: $OUT_DMG"