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

#include "SceneItem.hpp"
#include "SceneItemComponent.hpp"

using namespace Dawn;

SceneItem::SceneItem(Scene *scene, sceneitemid_t id)  : transform(this) {
  assertNotNull(scene);
  
  this->id = id;
  this->scene = scene;
}

void SceneItem::init() {
  // Keep checking all components until they have all inited
  int32_t waitingOn;
  do {
    waitingOn = 0;

    // For each component
    auto it = this->components.begin();
    while(it != this->components.end()) {
      // Has this component already inited?
      if((*it)->hasInitialized) {
        ++it;
        continue;
      }

      // For each dependency.
      auto deps = (*it)->getDependencies();
      bool_t waiting = false;
      auto it2 = deps.begin();
      while(it2 != deps.end()) {
        if(*it2 == nullptr) {
          ++it2;
          continue;
        }

        // Has the dep not yet inited?
        if(!(*it2)->hasInitialized) {
          waiting = true;
          break;
        }
        ++it2;
      }

      // Are we waiting for a dep?
      if(waiting) {
        waitingOn++;
      } else {
        (*it)->init();
      }
      ++it;
    }
  } while(waitingOn != 0);
}

void SceneItem::destroy() {
  auto it = this->components.begin();
  while(it != this->components.end()) {
    (*it)->onDispose();
    ++it;
  }
}

SceneItem::~SceneItem() {
  auto it = this->components.begin();
  it = this->components.begin();
  while(it != this->components.end()) {
    delete *it;
    ++it;
  }
}