//
// Copyright The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//

// WindowTest.cpp: Sample used to test various function of OSWindow

#include <algorithm>
#include <iostream>

#include "OSWindow.h"
#include "system_utils.h"

int main(int argc, char *argv[])
{
    OSWindow *window = CreateOSWindow();
    int width = 400;
    int height = 400;
    int x = 0;
    int y = 0;

    if (!window->initialize("Window Test", width, height))
    {
        return -1;
    }
    window->setVisible(true);
    window->setPosition(x, y);

    bool running = true;
    while (running)
    {
        Event event;
        while (window->popEvent(&event))
        {
            if (event.Type == Event::EVENT_CLOSED)
            {
                running = false;
                break;
            }

            if (event.Type == Event::EVENT_KEY_PRESSED)
            {
                int newWidth = width;
                int newHeight = height;
                int newX = x;
                int newY = y;
                switch (event.Key.Code)
                {
                  case KEY_ESCAPE:
                    running = false;
                    break;

                  case KEY_W:
                    newWidth = std::max(0, width + (event.Key.Shift ? -20 : 20));
                    break;
                  case KEY_H:
                    newHeight = std::max(0, height + (event.Key.Shift ? -20 : 20));
                    break;

                  case KEY_LEFT:
                    newX = x - 20;
                    break;
                  case KEY_RIGHT:
                    newX = x + 20;
                    break;
                  case KEY_UP:
                    newY = y - 20;
                    break;
                  case KEY_DOWN:
                    newY = y + 20;
                    break;

                  case KEY_C:
                    window->setMousePosition(width / 2, height / 2);
                    break;
                  case KEY_T:
                    window->signalTestEvent();
                    window->messageLoop();
                    if (window->didTestEventFire())
                    {
                        std::cout << "Test event did fire" << std::endl;
                    }
                    else
                    {
                        std::cout << "Test event did not fire" << std::endl;
                    }
                    break;
                  case KEY_S:
                    window->setVisible(false);
                    window->messageLoop();
                    angle::Sleep(1000);
                    window->setVisible(true);
                    window->messageLoop();
                    break;

                  default:
                    break;
                }

                if (newWidth != width || newHeight != height)
                {
                    width = newWidth;
                    height = newHeight;
                    window->resize(width, height);
                }
                if (newX != x || newY != y)
                {
                    x = newX;
                    y = newY;
                    window->setPosition(x, y);
                }

                angle::Sleep(0);
                window->messageLoop();
                if (window->getWidth() != width || window->getHeight() != height)
                {
                    std::cout << "Discrepancy between set dimensions and retrieved dimensions" << std::endl;
                    std::cout << "Width: " << width << " vs. " << window->getWidth() << std::endl;
                    std::cout << "Height: " << height << " vs. " << window->getHeight() << std::endl;
                }
                if (window->getX() != x || window->getY() != y)
                {
                    std::cout << "Discrepancy between set position and retrieved position" << std::endl;
                    std::cout << "X: " << x << " vs. " << window->getX() << std::endl;
                    std::cout << "Y: " << y << " vs. " << window->getY() << std::endl;
                }
            }
        }

        angle::Sleep(0);
        window->messageLoop();
    }

    window->destroy();
}