<?php

namespace sammo;

use DateTimeImmutable;
use sammo\DTO\AuctionInfo;
use sammo\Enums\InheritanceKey;
use sammo\Enums\ResourceType;
use sammo\RandUtil;

class AuctionUniqueItem extends Auction
{

  static public function genObfuscatedName(int $id): string
  {
    $db = DB::db();
    $gameStor = KVStorage::getStorage($db, 'game_env');

    $namePool = $gameStor->getValue('obfuscatedNamePool');
    if($namePool === null){
      $rng = new RandUtil(new LiteHashDRBG(Util::simpleSerialize(
        UniqueConst::$hiddenSeed,
      )));
      $namePool = [];
      foreach(GameConst::$randGenFirstName as $ch0){
        foreach(GameConst::$randGenMiddleName as $ch1){
          foreach(GameConst::$randGenLastName as $ch2){
            $namePool[] = "{$ch0}{$ch1}{$ch2}";
          }
        }
      }
      $namePool = $rng->shuffle($namePool);
      $gameStor->setValue('obfuscatedNamePool', $namePool);
    }


    $dupIdx = intdiv($id, count($namePool));
    $subIdx = $id % count($namePool);
    if ($dupIdx == 0) {
      return $namePool[$subIdx];
    }
    return "{$namePool[$subIdx]}{$dupIdx}";
  }

  static public function openItemAuction(BaseItem $item, General $general, int $startAmount): ?string
  {
    if ($startAmount < GameConst::$inheritItemUniqueMinPoint) {
      return '최소 경매 금액은 ' . GameConst::$inheritItemUniqueMinPoint . '입니다.';
    }

    if($general->getInheritancePoint(InheritanceKey::previous) < $startAmount){
      return '경매를 시작할 포인트가 부족합니다.';
    }

    $auctionID = static::genNextAuctionID();
    $now = new DateTimeImmutable();

    $db = DB::db();
    $gameStor = KVStorage::getStorage($db, 'game_env');
    $turnTerm = $gameStor->getValue('turnterm');

    $closeDate = $now->add(TimeUtil::secondsToDateInterval(24 * 60 * $turnTerm * 60));

    $info = new AuctionInfo(
      $auctionID,
      static::genObfuscatedName($general->getID()),
      $general->getID(),
      $item->getRawClassName(),
      "{$item->getName()} 경매",
      false,
      ResourceType::inheritancePoint,
      $startAmount,
      null,
      $now,
      $closeDate
    );

    $result = static::openAuction($info, $general);
    if($result !== null){
      return $result;
    }
    $auction = new static($auctionID, $general);
    try{
      $auction->bid($startAmount);
    }
    catch(\Exception $e){
      //실패해선 안된다.
      $msg = $e->getMessage();
      $auction->closeAuction();
      return "경매를 시작했지만, 첫 입찰에 실패했습니다: {$msg}";
    }

    return null;
  }
}