PREINST_HOOKS="${PREINST_HOOKS} add_bitninja_repo"

add_bitninja_repo() {
    if [ -f /etc/debian_version ]; then
        if [ ! -f /etc/apt/sources.list.d/bitninja.list ]; then
            install -m 755 -d /etc/apt/keyrings
            install -m 700 -d /root/.gnupg
            gpg --no-default-keyring --keyring /etc/apt/keyrings/bitninja.gpg --keyserver keyserver.ubuntu.com --recv "7F8B47DC"
            echo deb [signed-by=/etc/apt/keyrings/bitninja.gpg] http://apt.bitninja.io/debian/ bitninja non-free > /etc/apt/sources.list.d/bitninja.list
            apt update
        fi
    else
        if [ ! -f /etc/yum.repos.d/BitNinja.repo ]; then
            rpm -Uvh http://rpm.bitninja.io/1.0/noarch/bitninja-repo-1.0-1.noarch.rpm
        fi
    fi
}