#!/usr/bin/env bash

set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
VERSION="$(node -p "const pkg=require('${ROOT_DIR}/package.json'); pkg.buildVersion || pkg.version" 2>/dev/null || echo 0.0.0)"
OUT_DIR="${STEPFORGE_PACKAGE_DIR:-$ROOT_DIR/build/artifacts}"
mkdir -p "$OUT_DIR"
WORK_DIR="$(mktemp -d "${OUT_DIR%/}/.pkg.XXXXXX")"
APP_DIR="$WORK_DIR/opt/stepforge"

cleanup() {
  rm -rf "$WORK_DIR"
}
trap cleanup EXIT

mkdir -p "$APP_DIR" "$WORK_DIR/usr/bin" "$WORK_DIR/DEBIAN"

copy_item() {
  local src="$1"
  local dest="$2"
  if [[ -e "$ROOT_DIR/$src" ]]; then
    mkdir -p "$(dirname "$dest")"
    cp -a "$ROOT_DIR/$src" "$dest"
  fi
}

# Application payload: only the files needed to run the app.
copy_item app "$APP_DIR/app"
copy_item core "$APP_DIR/core"
copy_item exporters "$APP_DIR/exporters"
copy_item scripts "$APP_DIR/scripts"
copy_item README.md "$APP_DIR/README.md"
copy_item LICENSE "$APP_DIR/LICENSE"
copy_item docs "$APP_DIR/docs"
copy_item ai_prompts "$APP_DIR/ai_prompts"
copy_item package.json "$APP_DIR/package.json"
copy_item package-lock.json "$APP_DIR/package-lock.json"
copy_item examples "$APP_DIR/examples"
copy_item build/agent_audit.md "$APP_DIR/build/agent_audit.md"

if [[ -d "$ROOT_DIR/node_modules" ]]; then
  cp -a "$ROOT_DIR/node_modules" "$APP_DIR/node_modules"
fi

cat > "$WORK_DIR/usr/bin/stepforge" <<'EOF'
#!/usr/bin/env sh
APP_DIR=/opt/stepforge
ELECTRON="$APP_DIR/node_modules/.bin/electron"
SANDBOX_HELPER="$APP_DIR/node_modules/electron/dist/chrome-sandbox"
cd "$APP_DIR" || exit 1
if command -v stat >/dev/null 2>&1 && [ -e "$SANDBOX_HELPER" ]; then
  helper_uid="$(stat -c '%u' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
  helper_mode="$(stat -c '%a' "$SANDBOX_HELPER" 2>/dev/null || echo '')"
  if [ "$helper_uid" = "0" ] && [ -n "$helper_mode" ]; then
    helper_mode_num=$((8#$helper_mode))
    if [ $((helper_mode_num & 04000)) -ne 0 ]; then
      exec "$ELECTRON" "$APP_DIR" "$@"
    fi
  fi
fi
printf '%s\n' '[stepforge] Electron sandbox helper is not configured for this install; starting with --no-sandbox' >&2
exec "$ELECTRON" --no-sandbox "$APP_DIR" "$@"
EOF
chmod 0755 "$WORK_DIR/usr/bin/stepforge"

cat > "$WORK_DIR/DEBIAN/control" <<EOF
Package: stepforge
Version: $VERSION
Section: utils
Priority: optional
Architecture: amd64
Depends: xinput
Maintainer: StepForge <noreply@example.com>
Description: Offline desktop guide capture and export tool
 A fully offline desktop app for step-by-step documentation, built for local
 capture, annotation, and export workflows.
EOF

DEB_FILE="$OUT_DIR/stepforge_${VERSION}_amd64.deb"
TAR_FILE="$OUT_DIR/stepforge_${VERSION}_linux-x64.tar.gz"

if command -v dpkg-deb >/dev/null 2>&1; then
  dpkg-deb --build "$WORK_DIR" "$DEB_FILE" >/dev/null
else
  echo "dpkg-deb is not installed; skipping .deb build" >&2
fi

tar -C "$WORK_DIR/opt" -czf "$TAR_FILE" stepforge

printf '%s\n' "$DEB_FILE"
printf '%s\n' "$TAR_FILE"