<?php

namespace services;

require_once('models/Nft.php');

use models\Nft;

class NftService extends BaseService {

    private static $heroList = null;
    private static $heroHash = null;
    private static $equipList = null;
    private static $equipHash = null;
    private static $chipList = null;
    private static $chipHash = null;

    public static function isHeroOwner($tokenId)
    {
        self::mustBeHeros();
        $nftDB = getXVal(self::heroHash, $tokenId);
        return $nftDb && $nftDB['owner_address'] == myself()->_getOpenId();
    }

    public static function isEquipOwner($tokenId)
    {
        self::mustBeEquips();
        $nftDb = getXVal(self::equipHash, $tokenId);
        return $nftDb && $nftDB['owner_address'] == myself()->_getOpenId();
    }

    public static function isChipOwner($tokenId)
    {
        self::mustBeChips();
        $nftDb = getXVal(self::chipHash, $tokenId);
        return $nftDb && $nftDB['owner_address'] == myself()->_getOpenId();
    }

    public static function getHeros()
    {
        self::mustBeHeros();
        return self::heroList;
    }

    public static function getEquips()
    {
        self::mustBeEquips();
        return self::equipList;
    }

    public static function getChips()
    {
        self::mustBeChips();
        return self::chipList;
    }

    private static function mustBeHeros()
    {
        if (is_null(self::heroList)) {
            self::heroList = Nft::GetNftListByType(myself()->_getOpenId(), Nft::HERO_TYPE);
            self::heroHash = array();
            foreach (self::heroList as $nftDb) {
                self::heroHash[$nftDb['token_id']] = $nftDb;
            }
        }
    }

    private static function mustBeEquips()
    {
        if (is_null(self::equipList)) {
            self::equipList = Nft::GetNftListByType(myself()->_getOpenId(), Nft::EQUIP_TYPE);
            self::equipHash = array();
            foreach (self::equipList as $nftDb) {
                self::equipHash[$nftDb['token_id']] = $nftDb;
            }
        }
    }

    private static function mustBeChips()
    {
        if (is_null(self::chipList)) {
            self::chipList = Nft::GetNftListByType(myself()->_getOpenId(), Nft::CHIP_TYPE);
            self::chipHash = array();
            foreach (self::chipList as $nftDb) {
                self::chipHash[$nftDb['token_id']] = $nftDb;
            }
        }
    }

}