#!/bin/bash

function cmake_gen() {
    mkdir -p /paddle/build
    cd /paddle/build

    # build script will not fail if *.deb does not exist
    rm *.deb 2>/dev/null || true
    # delete previous built whl packages
    rm -rf /paddle/paddle/dist 2>/dev/null || true

    # Support build for all python versions, currently
    # including cp27-cp27m and cp27-cp27mu.
    PYTHON_FLAGS=""
    if [ "$1" != "" ]; then
        echo "using python abi: $1"
        if [ "$1" == "cp27-cp27m" ]; then
            export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs2/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.11-ucs4/lib:}
            PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27m/bin/python
        -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27m/include/python2.7
        -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.11-ucs2/lib/libpython2.7.so"
        elif [ "$1" == "cp27-cp27mu" ]; then
            export LD_LIBRARY_PATH=/opt/_internal/cpython-2.7.11-ucs4/lib:${LD_LIBRARY_PATH#/opt/_internal/cpython-2.7.11-ucs2/lib:}
            PYTHON_FLAGS="-DPYTHON_EXECUTABLE:FILEPATH=/opt/python/cp27-cp27mu/bin/python
        -DPYTHON_INCLUDE_DIR:PATH=/opt/python/cp27-cp27mu/include/python2.7
        -DPYTHON_LIBRARIES:FILEPATH=/opt/_internal/cpython-2.7.11-ucs4/lib/libpython2.7.so"
        fi
    fi

    cat <<EOF
    ========================================
    Configuring cmake in /paddle/build ...
        -DCMAKE_BUILD_TYPE=Release
        ${PYTHON_FLAGS}
        -DWITH_DOC=OFF
        -DWITH_GPU=${WITH_GPU:-OFF}
        -DWITH_MKL=${WITH_MKL:-ON}
        -DWITH_AVX=${WITH_AVX:-OFF}
        -DWITH_GOLANG=${WITH_GOLANG:-ON}
        -DWITH_SWIG_PY=ON
        -DWITH_C_API=${WITH_C_API:-OFF}
        -DWITH_PYTHON=${WITH_PYTHON:-ON}
        -DWITH_SWIG_PY=${WITH_SWIG_PY:-ON}
        -DCUDNN_ROOT=/usr/
        -DWITH_STYLE_CHECK=${WITH_STYLE_CHECK:-ON}
        -DWITH_TESTING=${WITH_TESTING:-ON}
        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
    ========================================
EOF
    # Disable UNITTEST_USE_VIRTUALENV in docker because
    # docker environment is fully controlled by this script.
    # See /Paddle/CMakeLists.txt, UNITTEST_USE_VIRTUALENV option.
    cmake .. \
        -DCMAKE_BUILD_TYPE=Release \
        ${PYTHON_FLAGS} \
        -DWITH_DOC=OFF \
        -DWITH_GPU=${WITH_GPU:-OFF} \
        -DWITH_MKL=${WITH_MKL:-ON} \
        -DWITH_AVX=${WITH_AVX:-OFF} \
        -DWITH_GOLANG=${WITH_GOLANG:-ON} \
        -DWITH_SWIG_PY=${WITH_SWIG_PY:-ON} \
        -DWITH_C_API=${WITH_C_API:-OFF} \
        -DWITH_PYTHON=${WITH_PYTHON:-ON} \
        -DCUDNN_ROOT=/usr/ \
        -DWITH_STYLE_CHECK=${WITH_STYLE_CHECK:-ON} \
        -DWITH_TESTING=${WITH_TESTING:-ON} \
        -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
}

function run_build() {
    cat <<EOF
    ============================================
    Building in /paddle/build ...
    ============================================
EOF
    make -j `nproc`
}

function run_test() {
    if [ ${WITH_TESTING:-ON} == "ON" ] && [ ${RUN_TEST:-OFF} == "ON" ] ; then
    cat <<EOF
    ========================================
    Running unit tests ...
    ========================================
EOF
        ctest --output-on-failure
        # make install should also be test when unittest
        make install -j `nproc`
        pip install /usr/local/opt/paddle/share/wheels/*.whl
        paddle version
    fi
}


function gen_docs() {
    if [[ ${WITH_DOC:-OFF} == "ON" ]]; then
        cat <<EOF
    ========================================
    Building documentation ...
    In /paddle/build_doc
    ========================================
EOF
        mkdir -p /paddle/build_doc
        pushd /paddle/build_doc
        cmake .. \
            -DWITH_DOC=ON \
            -DWITH_GPU=OFF \
            -DWITH_AVX=${WITH_AVX:-ON} \
            -DWITH_SWIG_PY=ON \
            -DWITH_STYLE_CHECK=OFF
        make -j `nproc` gen_proto_py
        make -j `nproc` paddle_docs paddle_docs_cn
        popd
    fi


    if [[ ${WOBOQ:-OFF} == 'ON' ]]; then
        cat <<EOF
    ========================================
    Converting C++ source code into HTML ...
    ========================================
EOF
        export WOBOQ_OUT=/paddle/build/woboq_out
        mkdir -p $WOBOQ_OUT
        cp -rv /woboq/data $WOBOQ_OUT/../data
        /woboq/generator/codebrowser_generator \
            -b /paddle/build \
            -a \
            -o $WOBOQ_OUT \
            -p paddle:/paddle
        /woboq/indexgenerator/codebrowser_indexgenerator $WOBOQ_OUT
    fi
}


function gen_dockerfile() {
    # Set BASE_IMAGE according to env variables
    if [[ ${WITH_GPU} == "ON" ]]; then
    BASE_IMAGE="nvidia/cuda:8.0-cudnn5-runtime-ubuntu16.04"
    else
    BASE_IMAGE="ubuntu:16.04"
    fi

    DOCKERFILE_GPU_ENV=""
    DOCKERFILE_CUDNN_DSO=""
    if [[ ${WITH_GPU:-OFF} == 'ON' ]]; then
        DOCKERFILE_GPU_ENV="ENV LD_LIBRARY_PATH /usr/lib/x86_64-linux-gnu:${LD_LIBRARY_PATH}"
        DOCKERFILE_CUDNN_DSO="RUN ln -s /usr/lib/x86_64-linux-gnu/libcudnn.so.5 /usr/lib/x86_64-linux-gnu/libcudnn.so"
    fi

    cat <<EOF
    ========================================
    Generate /paddle/build/Dockerfile ...
    ========================================
EOF

    cat > /paddle/build/Dockerfile <<EOF
    FROM ${BASE_IMAGE}
    MAINTAINER PaddlePaddle Authors <paddle-dev@baidu.com>
    ENV HOME /root
EOF

    if [[ ${WITH_GPU} == "ON"  ]]; then
        NCCL_DEPS="apt-get install -y libnccl-dev &&"
    else
        NCCL_DEPS="" 
    fi

    cat >> /paddle/build/Dockerfile <<EOF
    ADD python/dist/*.whl /
    # run paddle version to install python packages first
    RUN apt-get update &&\
        ${NCCL_DEPS}\
        apt-get install -y wget python-pip && pip install -U pip && \
        pip install /*.whl; apt-get install -f -y && \
        apt-get clean -y && \
        rm -f /*.whl && \
        paddle version && \
        ldconfig
    ${DOCKERFILE_CUDNN_DSO}
    ${DOCKERFILE_GPU_ENV}
    ADD go/cmd/pserver/pserver /usr/bin/
    ADD go/cmd/master/master /usr/bin/
    # default command shows the paddle version and exit
    CMD ["paddle", "version"]
EOF
}

set -xe

cmake_gen ${PYTHON_ABI:-""}
run_build
run_test
gen_docs
gen_dockerfile

printf "If you need to install PaddlePaddle in develop docker image,"
printf "please make install or pip install build/python/dist/*.whl.\n"