#!/usr/bin/env bash
# Builds LiveWall-Setup-<version>.exe from prebuilt/ with NSIS (makensis).
#
#   ./installer/build-installer.sh                 # uses ../prebuilt
#   SOURCE_DIR=/abs/path ./installer/build-installer.sh
#
# On Debian/Ubuntu: sudo apt-get install nsis
set -euo pipefail

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(dirname "$here")"
csproj="$root/LiveWall/LiveWall.csproj"

version="$(sed -n 's:.*<Version>\(.*\)</Version>.*:\1:p' "$csproj" | head -1)"
[ -n "$version" ] || { echo "Could not read <Version> from $csproj" >&2; exit 1; }

# NSIS VIProductVersion wants four numbers.
version4="$version"
case "$(awk -F. '{print NF}' <<< "$version")" in
  1) version4="$version.0.0.0" ;;
  2) version4="$version.0.0" ;;
  3) version4="$version.0" ;;
esac

source_dir="${SOURCE_DIR:-$root/prebuilt}"
[ -f "$source_dir/LiveWall.exe" ] || { echo "No published build in $source_dir" >&2; exit 1; }

command -v makensis >/dev/null || { echo "makensis not found - install the 'nsis' package" >&2; exit 1; }

# Optional: COMPRESS=zlib|lzma|lzma-solid (default lzma-solid), OUT_SUFFIX, SIGNTOOL
compress="${COMPRESS:-lzma-solid}"
suffix="${OUT_SUFFIX:-}"
extra=()
[ -n "${SIGNTOOL:-}" ] && extra+=(-DSIGNTOOL="$SIGNTOOL")
[ -n "$suffix" ] && extra+=(-DOUT_SUFFIX="$suffix")

echo "Building LiveWall $version installer from $source_dir (compressor: $compress)"
makensis -V2 \
  -DVERSION="$version" \
  -DVERSION4="$version4" \
  -DSOURCE_DIR="$source_dir" \
  -DCOMPRESS="$compress" \
  "${extra[@]}" \
  "$here/LiveWall.nsi"

out="$root/LiveWall-Setup-$version$suffix.exe"
ls -lh "$out"
echo
echo "sha256  $(sha256sum "$out" | cut -d' ' -f1)  $(basename "$out")"
[ -n "${SIGNTOOL:-}" ] || echo "note    not signed - see docs/antivirus.md"