#!/usr/bin/env bash

# See:
#
# - https://github.com/abseil/abseil-cpp

LIB_DIR="$(realpath "$(dirname "${BASH_SOURCE[0]}")/../../lib")"
source "${LIB_DIR}/ossbuild-common.bash"

ABSEIL_CPP_DEFAULT_VERSION='20230125.3'
#https://github.com/abseil/abseil-cpp/archive/refs/tags/20230125.3.tar.gz

ossbuild-prepare-abseil-cpp() {
    local version gh_url archive archive_url src_tree
    ossbuild-project-var-get -v version VERSION
    ossbuild-project-var-get -v gh_url GH_URL
    archive="$(ossbuild-project-src-path "$(ossbuild-project-archive-gnu)")"
    archive_url="${gh_url}/archive/refs/tags/${version}.tar.gz"
    src_tree="$(ossbuild-project-src-path "$(ossbuild-project-namever-gnu)")"

    ossbuild-project-var-set ARCHIVE "${archive}"
    ossbuild-project-var-set ARCHIVE_URL "${archive_url}"
    ossbuild-project-var-set SRC_TREE "${src_tree}"

    ossbuild-src-tar "${archive_url}" "${archive}"

    [ -d "${src_tree}" ] || {
        bsl_loge "failed to create '${src_tree}'"
        ossbuild-project-var-unset SRC_TREE
        return 2
    }
}

ossbuild-build-abseil-cpp() {
    local src_tree build_tree
    ossbuild-project-var-get -v src_tree SRC_TREE
    build_tree="${src_tree}/ossbuild"
    ossbuild-project-var-set BUILD_TREE "${build_tree}"

    local generate_opts=(
        -B "${build_tree}"
        -G Ninja
        '-DCMAKE_BUILD_TYPE=Release'
        "-DCMAKE_INSTALL_PREFIX=${PREFIX}"
    )
    if is-qnap-qts; then
        generate_opts+=(
            '-DCMAKE_INSTALL_LIBDIR=lib'
        )
    fi
    generate_opts+=(
        '-DCMAKE_CXX_STANDARD=14'
        '-DABSL_PROPAGATE_CXX_STD=ON'
    )
    if ossbuild-run-tests-p; then
        if is-qnap-qts; then
            bsl_logw "when last checked (20230630) running Abseil tests on QNAO/QTS does not work"
        else
            generate_opts+=(
                '-DABSL_BUILD_TESTING=ON'
                '-DABSL_USE_GOOGLETEST_HEAD=ON'
            )
        fi
    fi

    ossbuild-cmd cmake "${generate_opts[@]}" "${src_tree}"
    ossbuild-cmd cmake --build "${build_tree}"
    return 1
}

ossbuild-install-abseil-cpp() {
    local build_tree
    ossbuild-project-var-get -v build_tree BUILD_TREE

    local cmd=(
        cmake
        --build "${build_tree}"
        --target 'install'
    )
    ossbuild-writable-p "${PREFIX}" || cmd=(sudo "${cmd[@]}")
    ossbuild-cmd "${cmd[@]}"
}

ossbuild-abseil-cpp() {
    ossbuild-project-gh-init 'abseil' 'abseil-cpp'
    ossbuild-project-build-steps-all "${@}"
}

#
# run script, skip if sourced (while avoiding shellcheck issues)
#
(return 0 2>/dev/null) || ossbuild-abseil-cpp "${@}"