#!/bin/bash

# If you have "no space left" error, you can change the location of temporary files with BUILDPLACE environment variable.

# Advanced usage:
# Test gcc-8:
# env DIST=bionic EXTRAPACKAGES="gcc-8 g++-8" DEB_CC=gcc-8 DEB_CXX=g++-8 CMAKE_FLAGS=" -DNO_WERROR=1 " ./release
# Clang6 build:
# env DIST=bionic EXTRAPACKAGES="clang-6.0 libstdc++-8-dev lld-6.0 liblld-6.0-dev libclang-6.0-dev liblld-6.0" DEB_CC=clang-6.0 DEB_CXX=clang++-6.0 CMAKE_FLAGS=" -DNO_WERROR=1 " ./release
# Clang7 build:
# env DIST=unstable EXTRAPACKAGES="clang-7 libstdc++-8-dev lld-7 liblld-7-dev libclang-7-dev liblld-7" DEB_CC=clang-7 DEB_CXX=clang++-7 CMAKE_FLAGS=" -DNO_WERROR=1 " ./release
# Clang6 without internal compiler (for low memory arm64):
# env DIST=bionic DISABLE_PARALLEL=1 EXTRAPACKAGES="clang-6.0 libstdc++-8-dev" DEB_CC=clang-6.0 DEB_CXX=clang++-6.0 CMAKE_FLAGS=" -DNO_WERROR=1 " ./release

# Version increment:
# Default release: 18.1.2 -> 18.2.0:
# ./release --version
# or
# ./release --version minor
# Bugfix release (only with small patches to previous release): 18.1.2 -> 18.1.3:
# ./release --version patch
# Do this once per year: 18.1.2 -> 19.0.0:
# ./release --version major

set -e

CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
cd $CURDIR

source "./release_lib.sh"

DEB_CC=${DEB_CC:=gcc-7}
DEB_CXX=${DEB_CXX:=g++-7}
PBUILDER_AUTOUPDATE=${PBUILDER_AUTOUPDATE=4320}

CONTROL=debian/control
DEBUILD_NOSIGN_OPTIONS="-us -uc"
DEBUILD_NODEPS_OPTIONS="-d"
USE_PBUILDER=1

if [ -z "$VERSION_STRING" ] ; then
    get_revision_author
fi

while [[ $1 == --* ]]
do
    if [[ $1 == '--test' ]]; then
        TEST='yes'
        VERSION_POSTFIX+=+test
        shift
    elif [[ $1 == '--check-build-dependencies' ]]; then
        DEBUILD_NODEPS_OPTIONS=""
        shift
    elif [[ $1 == '--version' ]]; then
        gen_revision_author $2
        exit 0
    elif [[ $1 == '--pbuilder' ]]; then
        # Default
        shift
    elif [[ $1 == '--no-pbuilder' ]]; then
        USE_PBUILDER=
        shift
    elif [[ $1 == '--fast' ]]; then
        # Wrong but fast pbuilder mode: create base package with all depends
        EXTRAPACKAGES="$EXTRAPACKAGES debhelper cmake ninja-build gcc-7 g++-7 libc6-dev libicu-dev libreadline-dev psmisc bash expect python python-lxml python-termcolor python-requests curl perl sudo openssl netcat-openbsd"
        shift
    else
        echo "Unknown option $1"
        exit 2
    fi
done

# Build options
if [ -n "$SANITIZER" ]
then
    if [[ "$SANITIZER" == "address" ]]; then VERSION_POSTFIX+="asan"
    elif [[ "$SANITIZER" == "thread" ]]; then VERSION_POSTFIX+="tsan"
    elif [[ "$SANITIZER" == "memory" ]]; then VERSION_POSTFIX+="msan"
    elif [[ "$SANITIZER" == "undefined" ]]; then VERSION_POSTFIX+="ubsan"
    else
        echo "Unknown value of SANITIZER variable: $SANITIZER"
        exit 3
    fi

    export DEB_CC=${DEB_CC=clang-6.0}
    export DEB_CXX=${DEB_CXX=clang++-6.0}
    EXTRAPACKAGES="$EXTRAPACKAGES clang-6.0 lld-6.0"
elif [[ $BUILD_TYPE == 'valgrind' ]]; then
    MALLOC_OPTS="-DENABLE_TCMALLOC=0 -DENABLE_JEMALLOC=0"
    VERSION_POSTFIX+=+$BUILD_TYPE
elif [[ $BUILD_TYPE == 'debug' ]]; then
    CMAKE_BUILD_TYPE=Debug
    VERSION_POSTFIX+=+$BUILD_TYPE
fi

CMAKE_FLAGS=" $MALLOC_OPTS -DSANITIZE=$SANITIZER -DENABLE_EMBEDDED_COMPILER=1 $CMAKE_FLAGS"
[[ -n "$CMAKE_BUILD_TYPE" ]] && CMAKE_FLAGS=" -DCMAKE_BUILD_TYPE=$CMAKE_BUILD_TYPE $CMAKE_FLAGS"
#[[ "$CMAKE_FLAGS" =~ "USE_INTERNAL_LLVM_LIBRARY" ]] || CMAKE_FLAGS=" -DUSE_INTERNAL_LLVM_LIBRARY=1 $CMAKE_FLAGS"

export CMAKE_FLAGS
export EXTRAPACKAGES

VERSION_STRING+=$VERSION_POSTFIX
echo -e "\nCurrent version is $VERSION_STRING"

gen_changelog "$VERSION_STRING" "" "$AUTHOR" ""

if [ -z "$USE_PBUILDER" ] ; then
    # Build (only binary packages).
    debuild -e PATH -e SSH_AUTH_SOCK \
    -e DEB_CC=$DEB_CC -e DEB_CXX=$DEB_CXX -e CMAKE_FLAGS="$CMAKE_FLAGS" \
    -b ${DEBUILD_NOSIGN_OPTIONS} ${DEBUILD_NODEPS_OPTIONS}
else
    export DIST=${DIST:=bionic}
    export SET_BUILDRESULT=${SET_BUILDRESULT:=$CURDIR/..}

    if [[ -z `which pbuilder` ]] ; then
        sudo apt install -y pbuilder fakeroot debhelper debian-archive-keyring debian-keyring lsb-release
    fi

    . $CURDIR/debian/.pbuilderrc

    if [[ ! -e "/usr/share/debootstrap/scripts/${DIST}" ]] ; then
        sudo ln -s gutsy /usr/share/debootstrap/scripts/${DIST}
    fi

    if [[ -n "$FORCE_PBUILDER_CREATE" || ! -e "$BASETGZ" ]] ; then
        echo Creating base system $BASETGZ
        [ ! -e "/usr/share/debootstrap/scripts/${DIST}" ] && sudo ln -s gutsy /usr/share/debootstrap/scripts/${DIST}
        sudo --preserve-env bash -x pbuilder create --configfile $CURDIR/debian/.pbuilderrc $PBUILDER_OPT
    fi

    if [ "$PBUILDER_AUTOUPDATE" -gt 0 ]; then
        # Update every 3 days (60*24*3 minutes)
        if [[ -n "$PBUILDER_UPDATE" ]] || test `find "$BASETGZ" -mmin +$PBUILDER_AUTOUPDATE` ; then
            echo Updating base system $BASETGZ
            sudo --preserve-env pbuilder update --configfile $CURDIR/debian/.pbuilderrc $PBUILDER_OPT
        fi
    fi

    pdebuild --configfile $CURDIR/debian/.pbuilderrc -- $PBUILDER_OPT
fi