<?php

namespace InstantFurnace;

use pocketmine\plugin\PluginBase;
use pocketmine\event\Listener;
use pocketmine\event\player\PlayerInteractEvent;
use pocketmine\inventory\CraftingManager;
use pocketmine\inventory\Fuel;
use pocketmine\block\Block;
use pocketmine\item\Item;
use pocketmine\math\Vector3;
use pocketmine\tile\Chest;

class Main extends PluginBase implements Listener{

    public function onEnable(){
        $this->enabled = false;
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
        $this->nametag = array();
        }

    public function onBlockTouch(PlayerInteractEvent $ev){
        if(!($ev->getBlock()->getSide(Vector3::SIDE_UP)->getID() === Block::CHEST and $ev->getBlock()->getID() === Block::COBBLESTONE)): return; endif;
        $furnaceDown = $ev->getBlock()->getSide(Vector3::SIDE_UP, 1);
        $furnaceUp = $ev->getBlock()->getSide(Vector3::SIDE_UP, 2);
        echo $furnaceDown.',    '.$furnaceUp;
        $chunk = $furnaceDown->getLevel()->getChunk($furnaceDown->x >> 4, $furnaceDown->z >> 4);
        $downTile = $ev->getPlayer()->getLevel()->getTile(new Vector3($ev->getBlock()->x, $ev->getBlock()->y + 1, $ev->getBlock()->z));
        $upTile = $ev->getPlayer()->getLevel()->getTile(new Vector3($ev->getBlock()->x,$ev->getBlock()->y + 2, $ev->getBlock()->z));
        //if(!$downTile instanceof Chest or $upTile instanceof Chest ): echo '!!!'; return; endif;
        //if($downTile === null or $upTile === null) return;
        //if($furnaceUp->getID() == 54 and $downTile->isPaired() === false and $upTile->isPaired() === false and
        if($furnaceUp->getID() == 54 and

            (
                (
                $furnaceDown->getSide(Vector3::SIDE_NORTH)->getID() === Block::COBBLESTONE and
                $furnaceDown->getSide(Vector3::SIDE_SOUTH)->getID() === Block::COBBLESTONE and
                $furnaceUp->getSide(Vector3::SIDE_WEST)->getID() === Block::AIR and
                $furnaceUp->getSide(Vector3::SIDE_EAST)->getID() === Block::AIR
                )

                or

                (
                $furnaceDown->getSide(Vector3::SIDE_WEST)->getID() === Block::COBBLESTONE and
                $furnaceDown->getSide(Vector3::SIDE_EAST)->getID() === Block::COBBLESTONE and
                $furnaceUp->getSide(Vector3::SIDE_NORTH)->getID() === Block::AIR and
                $furnaceUp->getSide(Vector3::SIDE_SOUTH)->getID() === Block::AIR
                )
            )

            ){
            //$ev->setCancelled();
            $ev->getPlayer()->sendMessage("[InstantFurnace] Smelting...");
            $this->smeltInstant($upTile, $downTile, $ev->getPlayer());
            $ev->getPlayer()->sendMessage("[InstantFurnace] Complete!");
        }
    }

    public function smeltInstant($up, $down, $owner){
        $fuel = 0;
        $left = 0;
        $itemCount = 0;
        //Count all fuels
        for($slot = 0; $slot <= 27; $slot++){
            $item = $down->getItem($slot);
            $fuel += isset(Fuel::$duration[$item->getID()]) ? Fuel::$duration[$item->getID()] : 0;
        }
        $allFuel = $fuel;
        //Smelt
        for($slot = 0; $slot <= 27; $slot++){
            $item = $up->getItem($slot);
            $itemCount = $item->getCount();
            if($this->getServer()->getCraftingManager()->matchFurnaceRecipe($item) !== null){
                $give = $this->getServer()->getCraftingManager()->matchFurnaceRecipe($item)->getResult();
                $giveItem = $give->setCount(1);
                while($fuel >= 200 and $itemCount > 0){
                    $fuel -= 200;
                    $itemCount--;
                    $owner->getInventory()->addItem($giveItem);
                }
                $up->setItem($slot, new Item(
                                                $itemCount === 0 ? Item::AIR : $item->getID(),
                                                $itemCount === 0 ? 0 : $item->getDamage(),
                                                $itemCount === 0 ? 1 : $itemCount,
                                                $itemCount === 0 ? 'Air' : $item->getName()));
            }
        }
        //Caculate left fuel slots
        $usedFuel = $allFuel - $fuel;
        for($slot = 0; $slot <= 27; $slot++){
            if(isset(Fuel::$duration[$down->getItem($slot)->getID()])){
                $cnt = $down->getItem($slot)->getCount();
                while($usedFuel >= 0 and $cnt > 0){
                    $cnt--;
                    $usedFuel -= 200;
                }
                $item = $down->getItem($slot);
                $down->setItem($slot, new Item(
                                                $cnt === 0 ? Item::AIR : $item->getID(),
                                                $cnt === 0 ? 0 : $item->getDamage(),
                                                $cnt === 0 ? 1 : $itemCount,
                                                $cnt === 0 ? 'Air' : $item->getName()));
            }
        }
    }

}