// libcursed -- C++ classes for dealing with curses
// Copyright (C) 2019 xaizek <xaizek@posteo.net>
//
// This file is part of libcursed.
//
// libcursed 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 3 of the License, or
// (at your option) any later version.
//
// libcursed is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with libcursed.  If not, see <https://www.gnu.org/licenses/>.

#include "Screen.hpp"

#include <curses.h>

#include "guts/ColorManager.hpp"
#include "guts/Pos.hpp"
#include "guts/Size.hpp"
#include "guts/Widget.hpp"
#include "guts/WindowWidget.hpp"

using namespace cursed;
using namespace cursed::guts;

// Retrieves size of the screen.
static inline guts::Size
getSize()
{
    Size size;
    getmaxyx(stdscr, size.lines, size.cols);
    return size;
}

void
Screen::replaceTopWidget(Widget *w)
{
    if (!mainWidgets.empty()) {
        popMainWidget();
    }
    pushMainWidget(w);
}

void
Screen::pushMainWidget(Widget *w)
{
    mainWidgets.push_back(w);
    w->place(Pos(), getSize());
}

void
Screen::popMainWidget()
{
    mainWidgets.pop_back();
}

void
Screen::resize()
{
    Size size = getSize();
    for (Widget *widget : mainWidgets) {
        widget->place(Pos(), size);
    }
}

void
Screen::draw()
{
    werase(stdscr);
    wnoutrefresh(stdscr);

    guts::ColorManager::get().reset();
    for (Widget *widget : mainWidgets) {
        widget->draw();
    }

    if (cursorWidget != nullptr) {
        cursorWidget->updateCursor();
    }

    doupdate();
}

bool
Screen::showCursor(guts::WindowWidget *w)
{
    cursorWidget = w;
    return (curs_set(1) == 0);
}

bool
Screen::hideCursor()
{
    cursorWidget = nullptr;
    return (curs_set(0) != 0);
}

void
Screen::stopTUI()
{
    endwin();
}