// Copyright (c) 2022 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#include "VisualNovelManager.hpp"

using namespace Dawn;

VisualNovelManager::VisualNovelManager(SceneItem *item) :
  SceneItemComponent(item)
{
}

void VisualNovelManager::onStart() {
  SceneItemComponent::onStart();

  this->uiCanvas = getScene()->findComponent<UICanvas>();
  assertNotNull(this->uiCanvas);
  
  this->textBox = this->uiCanvas->findElement<VisualNovelTextbox>();
  this->fader = this->uiCanvas->findElement<VisualNovelFader>();

  assertNotNull(this->textBox);
  assertNotNull(this->fader);

  this->getScene()->eventSceneUnpausedUpdate.addListener(this, &VisualNovelManager::onUnpausedUpdate);
}

void VisualNovelManager::onUnpausedUpdate() {
  if(this->currentEvent == nullptr) return;

  if(!this->currentEvent->hasStarted) this->currentEvent->start(nullptr);
  if(this->currentEvent->update()) return;
  this->setEvent(this->currentEvent->end());
}

VisualNovelManager::~VisualNovelManager() {
  if(this->currentEvent != nullptr) {
    delete this->currentEvent;
  }
  this->getScene()->eventSceneUnpausedUpdate.removeListener(this, &VisualNovelManager::onUnpausedUpdate);
}


// // // // // // // // // // // // // // // // // // // // // // // // // // //


IVisualNovelEvent::IVisualNovelEvent(VisualNovelManager *man) {
  assertNotNull(man);
  this->manager = man;
}

void IVisualNovelEvent::start(IVisualNovelEvent *previous) {
  this->hasStarted = true;
  this->onStart(previous);
}

bool_t IVisualNovelEvent::update() {
  return this->onUpdate();
}

IVisualNovelEvent * IVisualNovelEvent::end() {
  this->onEnd();

  std::cout << "End";

  if(this->doNext != nullptr) {
    std::cout << " Nexter" << std::endl;
    auto next = this->doNext;
    this->doNext = nullptr;
    return next;
  }
  std::cout << " No nxt" << std::endl;
  return nullptr;
}

IVisualNovelEvent::~IVisualNovelEvent() {
  if(this->doNext != nullptr) delete this->doNext;
}