<?php
class Item extends Module
{
  private $_rawdata;

  public static function exists($item_id)
  {
    global $g5;

    if (isset($g5["connect_db"]) && isset($g5["item_table"])) {
      $data = sql_fetch("SELECT it_name FROM {$g5['item_table']} WHERE it_id = '{$item_id}'");
      return !empty($data);
    }

    return false;
  }

  public static function getItem($item_id)
  {
    global $g5;
    if (isset($g5["connect_db"]) && isset($g5["item_table"])) {
      $result = sql_fetch("SELECT * FROM {$g5['item_table']} WHERE it_id = '{$item_id}'");

      if (!empty($result)) {
        return $result;
      }
    }

    return [];
  }

  public static function getImage($item_id)
  {
    global $g5;
    if (isset($g5["connect_db"]) && isset($g5["item_table"])) {
      $result = sql_fetch("SELECT it_img FROM {$g5['item_table']} WHERE it_id = '{$item_id}'");

      if (!empty($result)) {
        return $result["it_img"];
      }
    }

    return [];
  }

  public static function getDetailImage($item_id)
  {
    global $g5;
    if (isset($g5["connect_db"]) && isset($g5["item_table"])) {
      $result = sql_fetch("SELECT it_1 FROM {$g5['item_table']} WHERE it_id = '{$item_id}'");
      
      if (!empty($result)) {
        return $result["it_1"];
      }
    }

    return [];
  }

  public static function getName($item_id)
  {
    global $g5;
    if (isset($g5["connect_db"]) && isset($g5["item_table"])) {
      $result = sql_fetch("SELECT it_name FROM {$g5['item_table']} WHERE it_id = '{$item_id}'");

      if (!empty($result)) {
        return $result["it_name"];
      }
    }

    return "";
  }

  public static function getInventoryItem($inventory_id)
  {
    global $g5;
    if (isset($g5["connect_db"]) && isset($g5["item_table"]) && isset($g5["inventory_table"]) ) {
      $result = sql_fetch("SELECT * FROM {$g5['inventory_table']} inv, {$g5['item_table']} itm WHERE inv.in_id = '{$inventory_id}' AND inv.it_id = itm.it_id");

      if (!empty($result)) {
        return $result;
      }
    }

    return [];
  }

  public static function sendItem($character_id, $receive_character_id, $inventory_id, $memo = "")
  {
    global $g5, $member;

    if (isset($g5["connect_db"]) && isset($g5["item_table"]) && isset($g5["inventory_table"]) ) {
      $send_chara = Character::getDetail($character_id, ["ch_name"]);
      $recv_chara = Character::getDetail($receive_character_id, ["ch_name"]);

      $item = self::getInventoryItem($inventory_id);

      if (!empty($item)) {
        self::addGetLog($item["it_id"], $character_id, $item, "전송");

        $inven_sql = "UPDATE {$g5['inventory_table']} SET
                  ch_id       = '{$recv_chara['ch_id']}',
                  ch_name     = '{$recv_chara['ch_name']}',
                  se_ch_id    = '{$send_chara['ch_id']}',
                  se_ch_name  = '{$send_chara['ch_name']}',
                  re_ch_id    = '{$recv_chara['ch_id']}',
                  re_ch_name  = '{$recv_chara['ch_name']}',
                  in_memo     = '{$memo}'
                where in_id   = '{$inventory_id}'";
        sql_query($inven_sql);
      
        $recv_mb_id = $recv_chara['mb_id'];
        $memo_content = "[ {$send_chara['ch_name']}님이 보내신 《{$item['it_name']}》선물이 도착 하였습니다. ] 캐릭터 인벤토리를 확인하세요.";
  
        send_memo($member['mb_id'], $recv_mb_id, $memo_content);
  
        return true;
      }
    }

    return false;
  }

  public static function giveItem($character_id, $item_id, $item = null, $count = 1, $type = "획득", $isorder = false)
  {
    global $g5;

    if (!$item['it_id']) {
      $item = self::getItem($item_id);
    }

    $ch = Character::getCharacter($character_id);

    if ($ch['ch_id']) {
      for ($i = 0; $i < $count; $i++) {
        $inven_sql = " insert into {$g5['inventory_table']}
            set ch_id = '{$ch['ch_id']}',
              it_id   = '{$item['it_id']}',
              it_name = '{$item['it_name']}',
              ch_name = '{$ch['ch_name']}'";
        if ($isorder) {
          self::insertOrderLog($character_id, $item_id);
        }
        self::addGetLog($item_id, $character_id, $item, $type);
        sql_query($inven_sql);
      }
    }
    return $count;
  }

  public static function insertOrderLog($character_id, $item_id)
  {
    global $g5;
    $member_id = Character::getMemberID($character_id);
    if ($member_id) {
      $time = G5_TIME_YMDHIS;
      sql_query("INSERT INTO {$g5['order_table']}
        set ch_id = '{$character_id}',
          it_id = '{$item_id}',
          or_datetime = '{$time}',
          mb_id = '{$member_id}'");
    }
  }

  /**
   * @param int $inventory_id
   * @param int $delete
   * @return void
   */
  public static function takeItem($inventory_id, $delete = 0, $type = "사용")
  {
    global $g5;
    
    self::addUseLog($inventory_id, $type . ($delete != 0 ? " (삭제)" : " (보존)"));

    if ($delete === 0) {
      sql_query("DELETE FROM {$g5['inventory_table']} WHERE in_id = '{$inventory_id}'");
    }
  }

  /**
   * @param int $character_id
   * @param int $item_id
   * @return array
   */
  public static function randomBox($character_id, $item_id)
  {
    global $g5;

    $seed = rand(0, 100);
    $result = [];

    $item_result = sql_fetch("SELECT re_it_id AS it_id
      FROM {$g5['explorer_table']}
      WHERE it_id = '{$item_id}'
        AND '{$seed}' BETWEEN ie_per_s AND ie_per_e
      ORDER BY RAND()
      LIMIT 1");

    if ($item_result['it_id']) {
      // 아이템 획득에 성공한 경우, 해당 아이템을 인벤토리에 삽입
      // 아이템 획득에 성공 시
      $item_result['it_name'] = self::getName($item_result['it_id']);

      self::giveItem($character_id, $item_result['it_id']);

      $result['it_id']    = $item_result['it_id'];
      $result['it_name']  = $item_result['it_name'];
    }

    return $result;
  }

  /**
   * @param int $it_id
   * @param int $ch_id
   * @param array|object $item
   * @param string $type
   */
  public static function addGetLog($it_id, $ch_id, $item = null, $type = '획득')
  {
    global $g5;
    try {
      if ($item == null || array_key_exists('it_id', $item)) {
        $item = self::getItem($it_id);
      }
      $item = $item ? addslashes(json_encode($item, JSON_UNESCAPED_UNICODE)) : "{}";
      $sql = "INSERT INTO `{$g5['item_modify_table']}` SET
                `it_id` = '{$it_id}',
                `ch_id` = '{$ch_id}',
                `it_count` = 1,
                `im_using_type` = '{$type}',
                `im_origin_item` = '{$item}'";
    
      sql_query($sql);

      if (sql_error_info()) {
        throw new exception(sql_error_info());
      }
    } catch(Exception $x) {

    }
  }
  
  /**
   * @param int $in_id
   * @param string $type
   */
  public static function addUseLog($in_id, $type)
  {
    global $g5;
    try {
      $origin_item = sql_fetch("SELECT * FROM {$g5['inventory_table']} where in_id = '{$in_id}'");
    
      $item = $origin_item ? addslashes(json_encode($origin_item, JSON_UNESCAPED_UNICODE)) : "{}";
      $it_id = $origin_item['it_id'];
      $ch_id = $origin_item['ch_id'];
    
      $sql = "INSERT INTO `{$g5['item_modify_table']}` SET
                `it_id` = '{$it_id}',
                `ch_id` = '{$ch_id}',
                `it_count` = 1,
                `im_using_type` = '{$type}',
                `im_origin_item` = '{$item}'";
    
      sql_query($sql);

      if (sql_error_info()) {
        throw new exception(sql_error_info());
      }
    } catch(Exception $x) {

    }
  }

  public function __construct($item_id)
  {
    global $g5;
    $data = self::getItem($item_id);
    if ($data) {
      $this->_rawdata = $data;
      parent::init($this->_rawdata);
    }
  }

  public function getLegacy()
  {
    return $this->_rawdata;
  }
}