#!/usr/bin/env bash
# docpp_make
# wrapper script for generating distro packages

proj="docpp"
prefix="${prefix:-/usr}"
release="${release:-Release}"

clean() {
    rm -rf ./*.zst* ./*.tar* ./*.sig* *.PKGBUILD *.ebuild *.ebuild* build/ PKGBUILD
}

check_correct_dir() {
    [ ! -d ".git" ] && printf "Incorrect directory.\n" && exit 1
}

gen_pkg() {
    [ "$(id -u)" = "0" ] && printf "Do not run as root.\n" && exit 1
    version="${version:-$(grep project CMakeLists.txt | sed "s/project(${proj} VERSION //g")}"

    if [ ! -e ".git" ]; then
        printf "This is not a git repository.\n"
        exit 1
    fi

    if [ ! -x "$(command -v git)" ]; then
        printf "git is required for this action.\n"
        exit 1
    fi

    rm -f ${proj} ${proj}-${version}.tar.gz ${proj}-${version}.PKGBUILD *.o *zst*
    mkdir -p ${proj}-${version}
    cp -rf $(git ls-files | cut -d/ -f1 | uniq) "${proj}-${version}"
    tar -cf ${proj}-${version}.tar ${proj}-${version}
    gzip ${proj}-${version}.tar
    rm -rf ${proj}-${version}

    USER="$(whoami)"
    printf "Is your GPG key '$(whoami)'?\n"
    select yn in "Yes" "No"; do
        case $yn in
            Yes) USER="$(whoami)"; break ;;
            No) printf "\n> "; read -r USER; break ;;
        esac
    done

    if [ -x "$(command -v gpg)" ]; then
        gpg --detach-sign --yes --local-user "${USER}" ${proj}-${version}.tar.gz
    fi

    if [ -x "$(command -v md5sum)" ]; then
        md5sum *.tar.gz | cut -d ' ' -f 1 > ${proj}-${version}.tar.gz.md5
    fi

    if [ -x "$(command -v sha256sum)" ]; then
        sha256sum *.tar.gz | cut -d ' ' -f 1 > ${proj}-${version}.tar.gz.sha256
    fi
}

#gen_gentoo_pkg() {
    #[ "$(id -u)" = "0" ] && printf "Do not run as root.\n" && exit 1
    #version="${version:-$(grep project CMakeLists.txt | sed "s/project(${proj} VERSION //g")}"
#
    #USER="$(whoami)"
    #printf "Is your GPG key '$(whoami)'?\n"
    #select yn in "Yes" "No"; do
        #case $yn in
            #Yes) USER="$(whoami)"; break ;;
            #No) printf "\n> "; read -r USER; break ;;
        #esac
    #done
#
    #if [ -f "packaging/${proj}.ebuild" ]; then
        #cp packaging/${proj}.ebuild ${proj}-${version}.ebuild
#
        #if [ -x "$(command -v gpg)" ]; then
            #gpg --detach-sign --yes --local-user "${USER}" ${proj}-${version}.ebuild
        #fi
#
        #if [ -x "$(command -v md5sum)" ]; then
            #md5sum ${proj}-${version}.ebuild | cut -d ' ' -f 1 > ${proj}-${version}.ebuild.md5
        #fi
#
        #if [ -x "$(command -v sha256sum)" ]; then
            #sha256sum ${proj}-${version}.ebuild | cut -d ' ' -f 1 > ${proj}-${version}.ebuild.sha256
        #fi
    #fi
#}

#gen_arch_pkg() {
    #[ "$(id -u)" = "0" ] && printf "Do not run as root.\n" && exit 1
    #[ ! -x "$(command -v makepkg)" ] && printf "makepkg required for this action.\n" && exit 1
#
    #rm -f PKGBUILD
#
    #gen_pkg
#
    #if [ -x "$(command -v md5sum)" ]; then
        #MD5_SUM="$(md5sum ${proj}-${version}.tar.gz | cut -d ' ' -f 1)"
    #fi
#
    #if [ -x "$(command -v sha256sum)" ]; then
        #SHA256_SUM="$(sha256sum ${proj}-${version}.tar.gz | cut -d ' ' -f 1)"
    #fi
#
    #sed "s/VERSION/${version}/g; s/MD5SUM/$MD5_SUM/g; s/SHA256SUM/$SHA256_SUM/g" packaging/${proj}.PKGBUILD > PKGBUILD
#
    #makepkg -sfr --sign || exit 1
#
    #rm -rf pkg/ src/${proj}-${version}.tar.gz src/${proj}-${version}.tar.gz.sig src/${proj}-${version}
#
    #mv PKGBUILD ${proj}-${version}.PKGBUILD
#
    ## generate MD5 checksum
    #[ -x "$(command -v md5sum)" ] && \
        #md5sum ${proj}-${version}-1-x86_64.pkg.tar.zst | cut -d ' ' -f 1 > ${proj}-${version}-1-x86_64.pkg.tar.zst.md5
#
    ## generate SHA256 checksum
    #[ -x "$(command -v sha256sum)" ] && \
        #sha256sum ${proj}-${version}-1-x86_64.pkg.tar.zst | cut -d ' ' -f 1 > ${proj}-${version}-1-x86_64.pkg.tar.zst.sha256
#}

help() {
cat << EOF
$0 - Wrapper script for generating distro packages
End users should not run this script directly, this is for maintainers only.

$0 clean         Clean up the source tree
$0 dist          Create a distro package for ${proj}
$0 help          Print this help
EOF
}

main() {
    case "$1" in
        "clean") action="clean" ;;
        "dist") action="dist" ;;
        "help") action="help" ;;
        "") action="help" ;;
        *) [ -z "$action" ] && action="wrong" ;;
    esac

    check_correct_dir

    case "$action" in
        "wrong") printf "Invalid action: %s\n" "$1" && exit 1 ;;
        "clean") clean ;;
        "help") help ;;
        "dist") gen_pkg ;;
    esac

    exit $?
}

main "$@"