#!/bin/bash

# Copyright 2025  Heinz Wiesinger, Amsterdam, The Netherlands
# 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)

PKGNAM=zed
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.?z | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
elif [ "$ARCH" = "armv7hl" ]; then
  SLKCFLAGS="-O3 -march=armv7-a -mfpu=vfpv3-d16"
  LIBDIRSUFFIX=""
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-$PKGNAM

rm -rf $PKG
mkdir -p $TMP $PKG

cd $TMP
rm -rf $PKGNAM-$VERSION
tar xvf $CWD/$PKGNAM-$VERSION.tar.?z || exit 1
cd $PKGNAM-$VERSION || exit 1
tar xvf $CWD/cargo-$PKGNAM-$VERSION.tar.?z || exit 1
mv cargo-$PKGNAM-$VERSION vendor
tar xvf $CWD/webrtc-*.tar.?z || exit 1

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

# Configure cargo for offline builds, with the source config cargo printed
# when fetch-sources.sh vendored the crates (git dependencies included).
mkdir -p .cargo
cat $CWD/cargo-config-$PKGNAM-$VERSION.toml >> .cargo/config.toml || exit 1

# LK_CUSTOM_WEBRTC: the prebuilt libwebrtc fetch-sources.sh downloaded, which
# webrtc-sys would otherwise download during the build.
CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
CARGO_PROFILE_RELEASE_DEBUG=false \
LK_CUSTOM_WEBRTC=$(echo $TMP/$PKGNAM-$VERSION/webrtc-*/linux-x64-release) \
ZED_UPDATE_EXPLANATION="Updates are handled by pkgtools" \
RELEASE_VERSION="$VERSION" \
PROTOC=/usr/bin/protoc \
PROTOC_INCLUDE=/usr/include \
cargo build \
  --offline \
  --release \
  --target $ARCH-unknown-linux-gnu \
  --package zed \
  --package cli \
  $NUMJOBS || exit 1

mkdir -p $PKG/usr/bin $PKG/usr/libexec

install -m 755 target/$ARCH-unknown-linux-gnu/release/cli \
  $PKG/usr/bin/zeditor
install -m 755 target/$ARCH-unknown-linux-gnu/release/zed \
  $PKG/usr/libexec/zed-editor

mkdir -p $PKG/usr/share/applications

DO_STARTUP_NOTIFY="true" \
APP_ICON="zed" \
APP_NAME="Zed" \
APP_CLI="zeditor" \
APP_ID="dev.zed.Zed" \
APP_ARGS="%U" \
envsubst < "crates/zed/resources/zed.desktop.in" > $PKG/usr/share/applications/dev.zed.Zed.desktop

mkdir -p $PKG/usr/share/icons/hicolor/{512x512,1024x1024}/apps
install -m 644 crates/zed/resources/app-icon.png \
  $PKG/usr/share/icons/hicolor/512x512/apps/zed.png
install -m 644 crates/zed/resources/app-icon@2x.png \
  $PKG/usr/share/icons/hicolor/1024x1024/apps/zed.png

# CARGO_PROFILE_RELEASE_STRIP=true strips the cli, but leaves the symbol
# table in zed-editor, so strip here instead:
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

mkdir -p $PKG/usr/doc/$PKGNAM-$VERSION
cp -a *.md LICENSE* \
  $PKG/usr/doc/$PKGNAM-$VERSION

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $TMP/$PKGNAM-$VERSION-$ARCH-$BUILD.txz