<?php

namespace services;

require_once('models/Nft.php');

use models\Nft;

class NftService extends BaseService {

    private static $userData = array();
    private static $nftCfg = array(
        'hero' => Nft::HERO_TYPE,
        'equip' => Nft::EQUIP_TYPE,
        'chip' => Nft::CHIP_TYPE,
    );

    public static function isHeroOwner($openId, $tokenId)
    {
        return self::internalIsOwner($openId, 'hero', $tokenId);
    }

    public static function isEquipOwner($openId, $tokenId)
    {
        return self::internalIsOwner($openId, 'equip', $tokenId);
    }

    public static function isChipOwner($openId, $tokenId)
    {
        return self::internalIsOwner($openId, 'chip', $tokenId);
    }

    public static function getHeros($openId)
    {
        return self::internalGetList($openId, 'hero');
    }

    public static function getEquips($openId)
    {
        return self::internalGetList($openId, 'equip');
    }

    public static function getChips($openId)
    {
        return self::internalGetList($openId, 'chip');
    }

    private static function internalGetList($openId, $name)
    {
        self::loadNft($openId, $name);
        return getXVal(self::$userData[$openId], $name . 'List');
    }

    private static function internalIsOwner($openId, $name, $tokenId)
    {
        self::loadNft($openId, $name);
        $nftHash = getXVal(self::$userData[$openId], $name . 'Hash', array());
        $nftDb = getXVal($nftHash, $tokenId);
        return $nftDb && $nftDb['owner_address'] == $openId;
    }

    private static function loadNft($openId, $name)
    {
        if (!in_array($openId, self::$userData)) {
            self::$userData[$openId] = array();
        }
        if (!in_array($name . 'List', self::$userData[$openId])) {
            $listName = $name . 'List';
            $hashName = $name . 'Hash';
            $tokenType = self::$nftCfg[$name];
            self::$userData[$openId][$listName] = Nft::GetNftListByType($openId, $tokenType);
            self::$userData[$openId][$hashName] = array();
            foreach (self::$userData[$openId][$listName] as $nftDb) {
                self::$userData[$openId][$hashName][$nftDb['token_id']] = $nftDb;
            }
        }
    }

}