#!/usr/bin/env bash

SCRIPTS_DIR="$HOME/.local/share/elfos"

function print_help() {
    echo "usage: elf_packages <ACTION>"
    echo
    echo "ACTION:"
    echo "  list                list available scripts"
    echo "  install <script>    execute install script"
    echo "  uninstall <script>  execute remove script"
    echo "  help                display this help"
}

function check_if_script_exists() {
    script="$1"

    if [[ ! -f "$SCRIPTS_DIR/$script.sh" ]]
    then
        echo "ERROR: $script does not exists"
        print_help
        return 1
    else
        return 0
    fi
}

function install_pacman_deps() {
    deps="$1"

    pacman -Sy --noconfirm $deps
}

function update() {
    script="$1"

    check_if_script_exists "$script" || return 1

    . "$SCRIPTS_DIR/$script.sh"

    if package_check_installed
    then
        package_update
    else
        echo "package not installed"
    fi
}

function uninstall() {
    script="$1"

    check_if_script_exists "$script" || return 1

    . "$SCRIPTS_DIR/$script.sh"

    if package_check_installed
    then
        package_remove
    else
        echo "package not installed"
    fi
}

function update() {
    script="$1"

    check_if_script_exists "$script" && return 1

    . "$SCRIPTS_DIR/$script"
    package_update
}

case $1 in
    list)
        find "$SCRIPTS_DIR" -maxdepth 1 -name '*.sh' \
            -exec basename "{}" ';' \
            | sed -e 's/\.sh$//'
        ;;
    install)
        shift
        install $*
        ;;
    uninstall)
        shift
        uninstall $*
        ;;
    update)
        shift
        update $*
        ;;
    help)
        print_help
        ;;
    "--help")
        print_help
        ;;
    "-h")
        print_help
        ;;
    *) 
        echo "ERROR: invalid action $1"
        print_help
        ;;
esac