#!/bin/env bash

# Builds WINE. This is meant for a multilib system, and will build a WOW64-enabled WINE (one "wine"
# executable for both 32-bit and 64-bit apps). The version built is the latest that wine-staging
# is available for.
#
# This is based on the SBo SlackBuild.

# Set STAGING=true to build with the wine-staging patches.

set -e

BUILD=${BUILD:-1}
TAG=${TAG:-dc}
TMP=${TMP:-/tmp}
PKG=$TMP/package-wine
BRANCH=${BRANCH:-6.x}

STAGING=${STAGING:-false}

if [[ -z $ARCH ]]; then
  case $( uname -m ) in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    *) ARCH=$( uname -m ) ;;
  esac
fi

case $ARCH in
  "i486")
    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
    ;;
  "i686")
    SLKCFLAGS="-O2 -march=i686 -mtune=i686"
    ;;
  "x86_64")
    SLKCFLAGS="-O2 -fPIC"
    ;;
  *)
    SLKCFLAGS="-O2"
    ;;
esac

VERSION="$(python3 - << EOF
import os
from pathlib import PurePosixPath
import requests
url = 'https://api.github.com/repos/wine-staging/wine-staging/tags'
headers = {'Accept': 'application/vnd.github.v3+json'}
releases = requests.get(url, headers=headers).json()
print(releases[0]['name'][1:])
EOF
)"


# Clean release-candidate versions (e.g. 4.0-rc1) so that they're Slackware-compatible (e.g. 4.0rc1).
PKGVER=${VERSION//-/}

rm -rf "$PKG" "$TMP/wine_src"
cd "$TMP"

mkdir wine_src
cd wine_src
wget "https://dl.winehq.org/wine/source/$BRANCH/wine-$VERSION.tar.xz"
wget https://raw.githubusercontent.com/Ponce/slackbuilds/master/system/wine/slack-desc

tar xvf "wine-${VERSION}.tar.xz"

OPTS=""


if [[ "$STAGING" != "false" ]]; then
  wget --content-disposition "https://github.com/wine-staging/wine-staging/archive/v$VERSION.tar.gz"

  tar xvf "wine-staging-${VERSION}.tar.gz"
  cd "wine-staging-$VERSION/patches"

  # The builds fail for me unless I disable GTK3 support.
  # As they say on tvtropes: YMMV.
  OPTS="--without-gtk3"
  ./patchinstall.sh --all DESTDIR="$TMP/wine_src/wine-$VERSION"
fi

cd "$TMP/wine_src/wine-$VERSION"

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

autoreconf -vif


mkdir "$TMP/wine_src/win64-build"
cd "$TMP/wine_src/win64-build"
CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  "$TMP/wine_src/wine-$VERSION/configure" \
  --enable-win64 \
  --prefix=/usr \
  --mandir=/usr/man \
  --docdir=/usr/doc/wine-"$VERSION" \
  --disable-tests \
  --build="$ARCH"-slackware-linux \
  "$OPTS"

make

mkdir -p "$TMP/wine_src/win32-build"
cd "$TMP/wine_src/win32-build"
CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  PKG_CONFIG_PATH=/usr/lib/pkgconfig \
  "$TMP/wine_src/wine-$VERSION/configure" \
  --prefix=/usr \
  --mandir=/usr/man \
  --docdir=/usr/doc/wine-"$VERSION" \
  --disable-tests \
  --build="$ARCH"-slackware-linux \
  --with-wine64=../win64-build \
  "$OPTS"

make

make install DESTDIR="$PKG"
cd ../win64-build
make install DESTDIR="$PKG"

find "$PKG" -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find "$PKG"/usr/man -type f -exec gzip -9 {} \;
for i in $( find "$PKG/usr/man" -type l ) ; do ln -s "$( readlink "$i" ).gz" "$i.gz" ; rm $i ; done

mkdir -p "$PKG/usr/doc/wine-$VERSION"
cp -a "$TMP"/wine_src/wine-"$VERSION"/[[:upper:]][[:upper:]]* "$PKG/usr/doc/wine-$VERSION"

mkdir -p "$PKG/install"
cat "$TMP/wine_src/slack-desc" > "$PKG/install/slack-desc"

cd "$PKG"
/sbin/makepkg -l y -c n "$TMP/wine-${PKGVER}-${ARCH}-$BUILD$TAG.${PKGTYPE:-tgz}"