#include "StarErrorScreen.hpp"
#include "StarGuiReader.hpp"
#include "StarRoot.hpp"
#include "StarJsonExtra.hpp"
#include "StarPaneManager.hpp"
#include "StarLabelWidget.hpp"
#include "StarAssets.hpp"
#include "StarGameTypes.hpp"

namespace Star {

ErrorScreen::ErrorScreen() {
  m_paneManager = make_shared<PaneManager>();

  m_accepted = true;

  auto assets = Root::singleton().assets();

  m_guiContext = GuiContext::singletonPtr();

  m_errorPane = make_shared<Pane>();
  GuiReader reader;
  reader.registerCallback("btnOk", [this](Widget*) {
      m_accepted = true;
    });
  reader.construct(assets->json("/interface/windowconfig/error.config:paneLayout"), m_errorPane.get());
}

void ErrorScreen::setMessage(String const& errorMessage) {
  m_errorPane->fetchChild<LabelWidget>("labelError")->setText(errorMessage);
  m_accepted = false;

  if (!m_paneManager->isDisplayed(m_errorPane)) {
    m_paneManager->displayPane(PaneLayer::Window, m_errorPane, [this](PanePtr) {
      m_accepted = true;
    });
  }
}

bool ErrorScreen::accepted() {
  return m_accepted;
}

void ErrorScreen::render(bool useBackdrop) {
  if (useBackdrop) {
    auto assets = Root::singleton().assets();

    for (auto backdropImage : assets->json("/interface/windowconfig/title.config:backdropImages").toArray()) {
      Vec2F offset = jsonToVec2F(backdropImage.get(0)) * interfaceScale();
      String image = backdropImage.getString(1);
      float scale = backdropImage.getFloat(2);
      Vec2F imageSize = Vec2F(m_guiContext->textureSize(image)) * interfaceScale() * scale;

      Vec2F lowerLeft = Vec2F(windowWidth() / 2.0f, windowHeight());
      lowerLeft[0] -= imageSize[0] / 2;
      lowerLeft[1] -= imageSize[1];
      lowerLeft += offset;
      RectF screenCoords(lowerLeft, lowerLeft + imageSize);
      m_guiContext->drawQuad(image, screenCoords);
    }
  }

  m_paneManager->render();
}

bool ErrorScreen::handleInputEvent(InputEvent const& event) {
  if (auto mouseMove = event.ptr<MouseMoveEvent>())
    m_cursorScreenPos = mouseMove->mousePosition;

  return m_paneManager->sendInputEvent(event);
}

void ErrorScreen::update(float dt) {
  m_paneManager->update(dt);
  m_cursor.update(dt);
}

void ErrorScreen::renderCursor() {
  Vec2I cursorPos = m_cursorScreenPos;
  Vec2I cursorSize = m_cursor.size();
  Vec2I cursorOffset = m_cursor.offset();
  unsigned int cursorScale = m_cursor.scale(interfaceScale());
  Drawable cursorDrawable = m_cursor.drawable();

  cursorPos[0] -= cursorOffset[0] * cursorScale;
  cursorPos[1] -= (cursorSize[1] - cursorOffset[1]) * cursorScale;
  if (!m_guiContext->trySetCursor(cursorDrawable, cursorOffset, cursorScale))
    m_guiContext->drawDrawable(cursorDrawable, Vec2F(cursorPos), cursorScale);
}

float ErrorScreen::interfaceScale() const {
  return m_guiContext->interfaceScale();
}

unsigned ErrorScreen::windowHeight() const {
  return m_guiContext->windowHeight();
}

unsigned ErrorScreen::windowWidth() const {
  return m_guiContext->windowWidth();
}

}