/*
   Copyright (C) 2010 - 2016 by the Battle for Wesnoth Project http://www.wesnoth.org/

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY.

   See the COPYING file for more details.
*/

#define GETTEXT_DOMAIN "wesnoth-lib"

#include "gui/dialogs/generator_settings.hpp"

#include "gui/auxiliary/field.hpp"
#include "gui/widgets/label.hpp"
#include "gui/widgets/settings.hpp"
#include "gui/widgets/slider.hpp"
#include "gettext.hpp"

#include "utils/functional.hpp"

namespace gui2
{

static int max_coastal = 5;

REGISTER_DIALOG(generator_settings)

tgenerator_settings::tgenerator_settings(generator_data& data)
    : data_(data)
{
    register_integer("players",      true, data_.nplayers);
    register_integer("width",        true, data_.width);
    register_integer("height",       true, data_.height);
    register_integer("hills_num",    true, data_.iterations);
    register_integer("hills_size",   true, data_.hill_size);
    register_integer("villages",     true, data_.nvillages);
    register_integer("castle_size",  true, data_.castle_size);
    register_integer("landform",     true, data_.island_size);

    register_bool("connect_castles", true, data_.link_castles);
    register_bool("show_labels",     true, data_.show_labels);
}

void tgenerator_settings::pre_show(twindow& window)
{
    auto generic_suffix_getter = [](const std::string& suffix = "")->std::string {
        return suffix;
    };

    auto get_landform_suffix = [&]()->std::string {
        return data_.island_size == 0 ? _("Inland") : (data_.island_size < max_coastal ? _("Coastal") : _("Island"));
    };

    bind_status_label(window, "players",     generic_suffix_getter);
    bind_status_label(window, "width",       generic_suffix_getter);
    bind_status_label(window, "height",      generic_suffix_getter);
    bind_status_label(window, "villages",    std::bind(generic_suffix_getter, _("/1000 tiles")));
    bind_status_label(window, "castle_size", generic_suffix_getter);
    bind_status_label(window, "landform",    get_landform_suffix);
}

void tgenerator_settings::bind_status_label(twindow& window, const std::string& id, std::function<std::string()> suffix_getter)
{
    tslider& slider = find_widget<tslider>(&window, id, false);
    tlabel& label = find_widget<tlabel>(&window, id + "_label", false);

    label.set_label(std::to_string(slider.get_value()));

    const std::string suffix = suffix_getter();

    connect_signal_notify_modified(slider, std::bind(
        &tgenerator_settings::status_label_callback, this, std::ref(slider), std::ref(label), suffix)
    );
}

void tgenerator_settings::status_label_callback(tslider& slider, tlabel& label, const std::string& suffix)
{
    label.set_label(std::to_string(slider.get_value()) + suffix);
}

} // end namespace gui2