#!/bin/bash

CONFIG_DIR="/voidpkg/vur"
CONFIG_FILE="vur.conf"
KEY_FILE="privkey.pem"
KEY_PATH="${CONFIG_DIR}/${KEY_FILE}"

help_file(){
    echo """

    usage: ${0} [-a] 

    -a      add packages to repository and sign them
    """
}

get_void_pkgs(){
    echo -n "Location to place void-packages?: "
    read vpkgs_location

    if [ -z "${vpkgs_location}" ];then
        vpkgs_location="/voidpkg/void-packages"
        echo "Creating directory: ${vpkgs_location}"
        mkdir -p "${vpkgs_location}"
        git clone https://github.com/void-linux/void-packages.git "${vpkgs_location}"

    elif [ -n "${vpkgs_location}" ];then
        echo "Creating directory: ${vpkgs_location}"
        git clone https://github.com/void-linux/void-packages.git "${vpkgs_location}"

    fi
}

gen_conf(){

    if [ ! -d "${CONFIG_DIR}" ];then
        mkdir -p "${CONFIG_DIR}" || exit 1
    fi

    if [ ! -f "${CONFIG_DIR}/${CONFIG_FILE}" ];then
        echo "No config file exists yet"
        echo -e "Please answer a few questions to set up the config\n\n"

        echo -n "Where do you want your custom repository? (mind permissions): "
        read repo_location

        echo "REPO_PATH=${repo_location}" > "${CONFIG_DIR}/${CONFIG_FILE}"

        echo -n "Where is your 'void-packages' location (no trailing /):"
        read void_packages_location

        echo "void_packages=${void_packages_location}/hostdir/binpkgs" >> "${CONFIG_DIR}/${CONFIG_FILE}"

        source "${CONFIG_DIR}/${CONFIG_FILE}"
    fi
}

load_conf(){

    if [ -f "${HOME}"/.config/vrepo.conf ];then
        source "${CONFIG_DIR}"/"${CONFIG_FILE}"
    else
        gen_conf
        source "${CONFIG_DIR}"/"${CONFIG_FILE}"
    fi
}

check_deps(){
    if [ ! -f "/usr/bin/xbps-install" ];then
        echo "A Void Linux based system is required!"
        echo "Unable to locate xbps-install"
        return 1
        exit 1
    fi
}

create_repo(){

    if [ ! -d "${REPO_PATH}" ];then

        mkdir "${REPO_PATH}"
        #cd "${BASE_DIR}"/"${REPO_PATH}" || return
        

        if [ -d "${REPO_PATH}" ];then
            
            return 0
        fi

    elif [ -d "${REPO_PATH}" ];then
        echo "Using custom repository: ${REPO_PATH}"
        return 0
    fi
}

gen_key(){
    ssh-keygen -t rsa -b 4096 -m PEM -f "${KEY_PATH}"
}

sign_pkgs(){

    if [ ! -f "${KEY_PATH}" ];then
        echo "Key file does not exist"
        echo "Generating a new key..."
        gen_key

        echo "Signing xbps files in ${REPO_PATH}"
        xbps-rindex --sign --signedby "${USER}" --privkey "${KEY_PATH}" "$REPO_PATH"
    else
        echo "Signing xbps files in ${REPO_PATH}"
        xbps-rindex --sign --signedby "${USER}" --privkey "${KEY_PATH}" "$REPO_PATH"
    fi
}

add_pkg(){
    load_conf
    create_repo
    cp -r "${void_packages}"/*.xbps "${REPO_PATH}" || exit 1
    xbps-rindex -a "${REPO_PATH}"/*.xbps
}

case "${1}" in

    -c | --create)
        load_conf
        create_repo
    ;;

    -gk | --gen-key)
        load_conf
        gen_key
    ;;

    -sp | --sign-pkgs)
        load_conf
        sign_pkgs
    ;;

    -a | --add-pkg)
        load_conf
        add_pkg
        sign_pkgs
    ;;

    -vp | --void-packages)
        get_void_pkgs
    ;;

    *)
        help_file
    ;;
esac