#!/usr/bin/env bash

# See:
#
# - https://github.com/protocolbuffers/protobuf
# - https://github.com/protocolbuffers/protobuf/blob/main/src/README.md
# - https://github.com/protocolbuffers/protobuf/blob/main/cmake/README.md

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

#PROTOBUF_DEFAULT_VERSION='23.3'
#https://github.com/protocolbuffers/protobuf/releases/download/v23.3/protobuf-23.3.tar.gz

ossbuild-protobuf-prepare() {
    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="protobuf-${version}.tar.gz"
    archive_url="${gh_url}/releases/download/v${version}/${archive}"
    src_tree="$(ossbuild-project-src-path "$(basename "${archive}" .tar.gz)")"

    ossbuild-project-var-set ARCHIVE "$(ossbuild-project-src-base)/${archive}"
    ossbuild-project-var-set ARCHIVE_URL "${archive_url}"
    ossbuild-project-var-set SRC_TREE "${src_tree}"

    ossbuild-src-tar "${archive_url}"

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

ossbuild-protobuf-build() {
    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}"

    echo "src:   '${src_tree}'"
    echo "build: '${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+=(
        "-Dprotobuf_BUILD_TESTS=OFF"
        "-Dprotobuf_ABSL_PROVIDER=package"
    )

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

ossbuild-protobuf-install() {
    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[@]}"
}

_main_() {
    ossbuild-project-gh-init 'protocolbuffers' 'protobuf'
    ossbuild-project-build-steps-all "${@}"
}

_main_ "${@}"