#include "resourceRover.h"
#include "resourceDeposit.h"
#include "map.h"
#include "player.h"
#include "extractor.h"
#include "structure.h"
#include "activeGameState.h"

#include <stateManager.h>

namespace battleship{
	using namespace std;
	using namespace vb01;
	using namespace gameBase;

	ResourceRover::ResourceRover(Player *player, int id, Vector3 pos, Quaternion rot) : 
		Vehicle(player, id, pos, rot), 
		capacity(300),
		loadRate(10) 
	{
		Vector2 size = Vector2(lenHpBar, 10);
		loadBackground = Unit::createBar(Vector2::VEC_ZERO, size,  Vector4(0, 0, 0, 1));
		loadForeground = Unit::createBar(Vector2::VEC_ZERO, size,  Vector4(1, 1, 0, 1));
	}

	ResourceRover::~ResourceRover(){
		removeBar(loadForeground);
		removeBar(loadBackground);
	}

	void ResourceRover::supply(Order order){
		float minDist = .5 * Map::getSingleton()->getCellSize().x;

		if(!pathPoints.empty())
			navigate(minDist);
		else{
			vector<Unit*> units = player->getUnits();
			vector<Structure*> extractors, refineries;

			for(Unit *unit : units){
				if(unit->getUnitClass() == UnitClass::EXTRACTOR && ((Extractor*)unit)->getDeposit()->getAmmount() > 0)
					extractors.push_back((Structure*)unit);
				else if(unit->getUnitClass() == UnitClass::REFINERY)
					refineries.push_back((Structure*)unit);
			}

			nearestExtractor = (Extractor*)getClosestUnit(extractors);
			nearestRefinery = getClosestUnit(refineries);

			if(nearestExtractor && nearestExtractor->getPos().getDistanceFrom(pos) <= minDist){
				ResourceDeposit *deposit = nearestExtractor->getDeposit();

				if(canLoad() && deposit->getAmmount() > 0){
					if(nearestExtractor->canDraw()){
						nearestExtractor->draw();
						load++;
						lastLoadTime = getTime();
					}
				}
				else if(load == capacity && nearestRefinery)
					preparePathpoints(order, nearestRefinery->getPos(), true);
			}
			else if(!nearestExtractor){
				if(nearestRefinery && load > 0)
					preparePathpoints(order, nearestRefinery->getPos(), true);
				else
					removeOrder(0);
			}

			if(nearestRefinery && nearestRefinery->getPos().getDistanceFrom(pos) <= minDist){
				if(canUnload()){
					load--;
					player->addRefineds(1);
					lastLoadTime = getTime();
				}
				else if(load == 0 && nearestExtractor)
					preparePathpoints(order, nearestExtractor->getPos());
			}
		}
	}

	void ResourceRover::update(){
		Vehicle::update();

		vector<Unit*> units = player->getUnits();
		nearestExtractor = (find(units.begin(), units.end(), nearestExtractor) != units.end() ? nearestExtractor : nullptr);
		nearestRefinery = (find(units.begin(), units.end(), nearestRefinery) != units.end() ? nearestRefinery : nullptr);

		ActiveGameState *activeState = (ActiveGameState*)GameManager::getSingleton()->getStateManager()->getAppStateByType(AppStateType::ACTIVE_STATE);
		Player *mainPlayer = (activeState ? activeState->getPlayer() : nullptr);

		vector<Player*> selectingPlayers = getSelectingPlayers();
		bool mainPlayerSelecting = (activeState && find(selectingPlayers.begin(), selectingPlayers.end(), mainPlayer) != selectingPlayers.end());

		Unit::displayUnitStats(loadForeground, loadBackground, load, capacity, mainPlayer == player && mainPlayerSelecting, Vector2(0, -10));
	}

	Unit* ResourceRover::getClosestUnit(vector<Structure*> structs){
		if(structs.empty()) return nullptr;

		int minDistId = -1;

		for(int i = 0; i < structs.size(); i++)
			if(structs[i]->getBuildStatus() == 100){
				minDistId = i;
				break;
			}

		if(minDistId == -1) return nullptr;

		for(int i = 0; i < structs.size(); i++)
			if(structs[i]->getBuildStatus() == 100 && structs[minDistId]->getPos().getDistanceFrom(pos) > structs[i]->getPos().getDistanceFrom(pos))
				minDistId = i;

		return structs[minDistId];
	}
}