#!/usr/bin/env bash
# Build NSIS GUI setup.exe for Windows (amd64 / arm64).
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
VERSION="${VERSION:-0.1.2}"
OUT="${OUT:-$ROOT/build/windows-installer}"
MAKENSIS="${MAKENSIS:-$(command -v makensis || true)}"
MAKENSIS="${MAKENSIS:-/opt/homebrew/bin/makensis}"

if [[ ! -x "$MAKENSIS" ]]; then
  echo "makensis not found — brew install nsis" >&2
  exit 1
fi

mkdir -p "$OUT"

build_arch() {
  local arch="$1"
  local src="$ROOT/build/win-linux/VeraePrintStamp-windows-${arch}-${VERSION}"
  if [[ ! -f "$src/verae-print.exe" ]]; then
    src="$ROOT/build/win-linux/VeraePrintStamp-windows-${arch}-0.1.2"
  fi
  if [[ ! -f "$src/verae-print.exe" ]]; then
    echo "missing $src/verae-print.exe — run scripts/build-win-linux.sh first" >&2
    exit 1
  fi
  # Stage with Windows-style paths for File directives
  local stage="$OUT/stage-${arch}"
  rm -rf "$stage"
  mkdir -p "$stage"
  cp "$src/verae-print.exe" "$stage/"
  cp "$ROOT/platform/windows/README.txt" "$stage/"
  cp "$ROOT/platform/windows/LICENSE.txt" "$stage/"

  local nsi="$ROOT/platform/windows/installer.nsi"
  # NSIS OutFile is relative to cwd
  (
    cd "$OUT"
    "$MAKENSIS" -V2 \
      -DVERSION="$VERSION" \
      -DARCH="$arch" \
      -DSRCDIR="$stage" \
      "$nsi"
  )
  local exe="$OUT/VeraePrintStamp-windows-${arch}-${VERSION}-setup.exe"
  if [[ ! -f "$exe" ]]; then
    # NSIS may write next to nsi or cwd
    exe=$(find "$OUT" "$ROOT/platform/windows" -name "VeraePrintStamp-windows-${arch}-${VERSION}-setup.exe" 2>/dev/null | head -1)
  fi
  if [[ -z "$exe" || ! -f "$exe" ]]; then
    echo "setup.exe not produced for $arch" >&2
    ls -la "$OUT" "$ROOT/platform/windows" | head -40
    exit 1
  fi
  cp -f "$exe" "$OUT/VeraePrintStamp-windows-${arch}-setup.exe"
  echo "built $exe ($(wc -c <"$exe") bytes)"
}

build_arch amd64
build_arch arm64
(cd "$OUT" && shasum -a 256 *-setup.exe | tee SHA256SUMS)
ls -lh "$OUT"/*-setup.exe