#!/bin/bash

# Slackware build script for Bear

# Copyright 2023 Ivan Kovmir <i@kovmir.eu>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd "$(dirname "$0")" ; CWD=$(pwd)

PRGNAM=Bear
VERSION=${VERSION:-3.1.6}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
	case "$(uname -m)" in
		i?86) ARCH=ia32 ;;
		arm*) ARCH=aarch64 ;;
		*) ARCH=$(uname -m) ;;
	esac
fi

if [ -n "${PRINT_PACKAGE_NAME}" ]; then
	echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
	exit 0
fi

TMP="${TMP:-/tmp/SBo}"
PKG="$TMP/package-$PRGNAM"
OUTPUT="${OUTPUT:-/tmp}"

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "aarch64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf "$PKG"
mkdir -p "$TMP" "$PKG" "$OUTPUT"
cd "$TMP"
rm -rf "$PRGNAM-$VERSION"
tar xvf "$CWD/$PRGNAM-$VERSION.tar.gz"
cd "$PRGNAM-$VERSION"
chown -R root:root .
chmod -R u+w,go+r-w,a-s .

mkdir -p $TMP/$PRGNAM-build
cd       $TMP/$PRGNAM-build

cmake \
  -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
  -DCMAKE_INSTALL_PREFIX=/usr \
  -DCMAKE_INSTALL_LIBDIR=lib${LIBDIRSUFFIX} \
  -DCMAKE_INSTALL_MANDIR=/usr/man \
  -DCMAKE_INSTALL_DOCDIR=/usr/doc/$PRGNAM-$VERSION \
  -DENABLE_UNIT_TESTS=OFF \
  -DENABLE_FUNC_TESTS=OFF \
  -DCMAKE_BUILD_TYPE=Release \
  ../$PRGNAM-$VERSION

make all
make install/strip DESTDIR="$PKG"
cd ..

# There is an install/strip Makefile recipe, but sbopkglint still compalins.
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

# The project does not respect -DCMAKE_INSTALL_MANDIR.
# Ivan reported the issue, but it was not fixed.
# https://github.com/rizsotto/Bear/issues/516
mv "$PKG/usr/share/man" "$PKG/usr"
rm -rf "$PKG/usr/share"

# Remove useless garbage after the install Makefile recipe.
rm "$PKG/usr/doc/$PRGNAM-$VERSION/CODE_OF_CONDUCT.md"
rm "$PKG/usr/doc/$PRGNAM-$VERSION/CONTRIBUTING.md"
rm "$PKG/usr/doc/$PRGNAM-$VERSION/INSTALL.md"
mv "$PKG/usr/doc/$PRGNAM-$VERSION/COPYING"   "$PKG/usr/doc/$PRGNAM-$VERSION/LICENSE"
mv "$PKG/usr/doc/$PRGNAM-$VERSION/README.md" "$PKG/usr/doc/$PRGNAM-$VERSION/repository-README.md"

# Compress man pages.
find "$PKG/usr/man" -type f -exec gzip {} +;

mkdir -p "$PKG/install"
cat "$CWD/$PRGNAM.SlackBuild" > "$PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild"
cat "$CWD/README"             > "$PKG/usr/doc/$PRGNAM-$VERSION/README"
cat "$CWD/slack-desc"         > "$PKG/install/slack-desc"

cd "$PKG"
# There's a "stage/" directory in the build dir that gets installed
# to the $PKG dir, e.g.: $PKG/tmp/SBo/Bear-3.1.6/stage
# Remove the unwanted parent of this "stage/" dir inside the $PKG.
# https://github.com/rizsotto/Bear/issues/625
# https://github.com/rizsotto/Bear/issues/627
rm -r $(find . -type d -name stage | cut -d '/' -f2)
/sbin/makepkg -l y -c n "$OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
