# Copyright (c) 2025 Huawei Device Co., Ltd.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and limitations under the License.

# Contributor: lixingyang <lixingyang15@h-partners.com>
# Maintainer: lixingyang <lixingyang15@h-partners.com>

pkgname=libterrain
pkgver=master
pkgrel=0
pkgdesc="Libterrain is a terrain rendering library primarily used for efficient rendering and management of terrain in 3D scenes."
url="https://sourceforge.net/projects/libterrain/"
archs=("armeabi-v7a" "arm64-v8a")
license=()
depends=()
makedepends=("automake" "autoconf" "libtool")

source="https://git.code.sf.net/p/libterrain/code"
downloadpackage=false
autounpack=false
buildtools="configure"

builddir=$pkgname-$pkgver
rootDir=$PWD

source envset.sh
host=
cloneflag=true
patchflag=true

prepare() {
    if [ $cloneflag == true ]; then
        mkdir -p $builddir
        git clone "$source" "$builddir"
        if [ $? != 0 ]; then
            return -1
        fi
        cloneflag=false
    fi
    if $patchflag
    then
        cd $builddir
        # 该库由于没有测试用例，所以打patch新增测试用例
        patch -p1 < `pwd`/../libterrain_oh_test.patch
        # patch只需要打一次,关闭打patch
        patchflag=false
        cd $OLDPWD
    fi
    cp -arf $builddir $builddir-$ARCH-build
    if [ $ARCH == "armeabi-v7a" ]; then
        setarm32ENV
        host=arm-linux
    elif [ $ARCH == "arm64-v8a" ]; then
        setarm64ENV
        host=aarch64-linux
    elif [ $ARCH == "x86_64" ]; then
        setx86_64ENV
        host=x86_64-linux
    else 
        echo "${ARCH} not support"
        return -1
    fi

    export CFLAGS="$CFLAGS -fPIC"
    export CXXFLAGS="$CXXFLAGS -fPIC"
    cd $builddir-$ARCH-build/libterrain

    if [ -f "configure.ac" ]; then
        sed -i '/^AC_INIT/a\
        AC_CONFIG_HEADERS([config.h])' configure.ac
    fi

    if [ -f "src/image.c" ]; then
        if ! grep -q "#include <stdio.h>" src/image.c; then
            sed -i '/#include "imagedef.h"/a #include <stdio.h>' src/image.c
        fi
        sed -i '/#warning no support for PNM images/d' src/image.c
    fi
    if [ -f "src/terrain.c" ]; then
        sed -i '/#warning no support for PNM images/d' src/terrain.c
    fi
    sed -i '/LT_INIT/i AM_PROG_AR' configure.ac
    mkdir -p build-aux m4
    aclocal -I m4 >> $buildlog 2>&1
    libtoolize --force --copy >> $buildlog 2>&1
    autoheader --force >> $buildlog 2>&1
    export WARNINGS=no
    automake --add-missing --copy --force-missing >> $buildlog 2>&1 || {
        echo "Automake had warnings but continuing..."
    }
    autoconf --force >> $buildlog 2>&1
    cd $OLDPWD
}

build() {
    cd $builddir-$ARCH-build
    # 进入 libterrain 子目录
    if [ -d "libterrain" ]; then
        cd libterrain
    else
        return -1
    fi

    PKG_CONFIG_LIBDIR="${pkgconfigpath}" ./configure "$@" \
        --host=$host \
        CC="$CC" \
        CXX="$CXX" \
        AR="$AR" \
        RANLIB="$RANLIB" \
        STRIP="$STRIP" \
        CFLAGS="-O3 -flto=thin -fPIC -Wno-error $CFLAGS_ARCH -I$OHOS_SDK/usr/include" \
        CXXFLAGS="-O3 -flto=thin -fPIC -Wno-error $CFLAGS_ARCH -I$OHOS_SDK/usr/include" \
        LDFLAGS="-Wl,--gc-sections" \
        LIBS="-lm" >> $buildlog 2>&1
    
    if [ $? != 0 ]; then
        return -1
    fi
    $MAKE VERBOSE=1 >> $buildlog 2>&1
    
    if [ $? != 0 ]; then
        return -1
    fi
    $MAKE VERBOSE=1 install PREFIX=$LYCIUM_ROOT/usr/$pkgname/$ARCH >> $buildlog 2>&1
    ret=$?
    cd $rootDir
    return $ret
}

package() {
    cd $builddir-$ARCH-build/libterrain
    $MAKE install VERBOSE=1 >> $buildlog 2>&1
    ret=$?
    cd $rootDir
    return $ret
}

check() {
    # 由于没有测试用例，所以自己写了个简单的测试用例libterrain_oh_test.c，编译如下
    cd $builddir-$ARCH-build/libterrain/src
    $CC -L ./.libs/ -lterrain -o libterrain_oh_test libterrain_oh_test.c
    cd $OLDPWD

    if [ $ARCH == "armeabi-v7a" ]
    then
        unsetarm32ENV
    elif [ $ARCH == "arm64-v8a" ]
    then
        unsetarm64ENV
    elif [ $ARCH == "x86_64" ]
    then
        unsetx86_64ENV
    else
        echo "$ARCH not support!"
        return -4
    fi
    echo "The test must be on an OpenHarmony device!"
    # 在OpenHarmony开发板中执行用例
}

# 清理环境
cleanbuild() {
    rm -rf ${PWD}/$builddir 
    rm -rf ${PWD}/$builddir-arm64-v8a-build
    rm -rf ${PWD}/$builddir-armeabi-v7a-build
    rm -rf ${PWD}/$builddir-x86_64-build
}