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<?php
//+------------------------------------------------------------------+
//|                                             MetaTrader 5 Web API |
//|                   Copyright 2001-2015, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
/**
 * Send common_get to MetaTrader 5 Server
 */
namespace App\Models;

class MTCommonProtocol 
  {
  private $m_connect = null;
  public function __construct($connect)
    {
    $this->m_connect = $connect;
    }
  /**
   * send request common_get
   * @param MTConCommon $common - config from MT5 server
   * @return MTRetCode
   */
  public function CommonGet(&$common)
    {
    //--- send request
    if (!$this->m_connect->Send(MTProtocolConsts::WEB_CMD_COMMON_GET, ""))
      {
      if (MTLogger::getIsWriteLog()) MTLogger::write(MTLoggerType::ERROR, 'send common get failed');
      return MTRetCode::MT_RET_ERR_NETWORK;
      }
    //--- get answer
    if (($answer = $this->m_connect->Read()) == null)
      {
      if (MTLogger::getIsWriteLog()) MTLogger::write(MTLoggerType::ERROR, 'answer common get is empty');
      return MTRetCode::MT_RET_ERR_NETWORK;
      }
    //--- parse answer
    if (($error_code = $this->ParseCommonGet($answer, $common_answer)) != MTRetCode::MT_RET_OK)
      {
      if (MTLogger::getIsWriteLog()) MTLogger::write(MTLoggerType::ERROR, 'parse common get failed: [' . $error_code . ']' . MTRetCode::GetError($error_code));
      return $error_code;
      }
    //---
    $common = $common_answer->GetFromJson();
    //---
    return MTRetCode::MT_RET_OK;
    }
  /**
   * check answer from MetaTrader 5 server
   * @param  string $answer
   * @param  MTCommonGetAnswer $common_answer
   * @return MTRetCode
   */
  private function ParseCommonGet(&$answer, &$common_answer)
    {
    $pos = 0;
    //--- get command answer
    $command = $this->m_connect->GetCommand($answer, $pos);
    if ($command != MTProtocolConsts::WEB_CMD_COMMON_GET) return MTRetCode::MT_RET_ERR_DATA;
    //---
    $common_answer = new MTCommonGetAnswer();
    //--- get param
    $pos_end = -1;
    while (($param = $this->m_connect->GetNextParam($answer, $pos, $pos_end)) != null)
      {
      switch ($param['name'])
      {
        case MTProtocolConsts::WEB_PARAM_RETCODE:
          $common_answer->RetCode = $param['value'];
          break;
      }
      }
    //--- check ret code
    if (($ret_code = MTConnect::GetRetCode($common_answer->RetCode)) != MTRetCode::MT_RET_OK) return $ret_code;
    //--- get json
    if (($common_answer->ConfigJson = $this->m_connect->GetJson($answer, $pos_end)) == null) return MTRetCode::MT_RET_REPORT_NODATA;
    //---
    return MTRetCode::MT_RET_OK;
    }
  }

/**
 * answer on request common_get
 */
class MTCommonGetAnswer
  {
  public $RetCode = '-1';
  public $ConfigJson = '';
  /**
   * From json get class MTConCommon
   * @return MTConTime
   */
  public function GetFromJson()
    {
    $obj = MTJson::Decode( $this->ConfigJson);
    if ($obj == null) return null;
    //---
    $result = new MTConCommon();
    //---
    $result->Name = (string)$obj->Name;
    $result->Owner = (string)$obj->Owner;
    $result->OwnerID = (string)$obj->OwnerID;
    $result->OwnerHost = (string)$obj->OwnerHost;
    $result->OwnerEmail = (string)$obj->OwnerEmail;
    $result->Product = (string)$obj->Product;
    $result->ExpirationLicense = (int)$obj->ExpirationLicense;
    $result->ExpirationSupport = (int)$obj->ExpirationSupport;
    $result->LimitTradeServers = (int)$obj->LimitTradeServers;
    $result->LimitWebServers = (int)$obj->LimitWebServers;
    $result->LimitAccounts = (int)$obj->LimitAccounts;
    $result->LimitDeals = (int)$obj->LimitDeals;
    $result->LimitSymbols = (int)$obj->LimitSymbols;
    $result->LimitGroups = (int)$obj->LimitGroups;
    $result->LiveUpdateMode = (int)$obj->LiveUpdateMode;
    $result->TotalUsers = (int)$obj->TotalUsers;
    $result->TotalUsersReal = (int)$obj->TotalUsersReal;
    $result->TotalDeals = (int)$obj->TotalDeals;
    $result->TotalOrders = (int)$obj->TotalOrders;
    $result->TotalOrdersHistory = (int)$obj->TotalOrdersHistory;
    $result->TotalPositions = (int)$obj->TotalPositions;
    $result->AccountURL = (string)$obj->AccountURL;
    $result->AccountAuto = (int)$obj->AccountAuto;
    //---
    $obj = null;
    return $result;
    }
  }

/**
 * LiveUpdate modes
 */
class MTEnUpdateMode
  {
  const UPDATE_DISABLE     = 0; // disable LiveUpdate
  const UPDATE_ENABLE      = 1; // enable LiveUpdate
  const UPDATE_ENABLE_BETA = 2; // enable LiveUpdate, including beta releases
  //--- enumeration borders
  const UPDATE_FIRST = MTEnUpdateMode::UPDATE_DISABLE;
  const UPDATE_LAST  = MTEnUpdateMode::UPDATE_ENABLE_BETA;
  }
  
/**
 * Common MetaTrader 5 Platform config
 */
class MTConCommon
  {
  //--- server name
  public $Name;
  //--- owner full name (from license)
  public $Owner;
  //--- owner short name (from license)
  public $OwnerID;
  //--- owner host (from license)
  public $OwnerHost;
  //--- owner email (from license)
  public $OwnerEmail;
  //--- product full name (from license)
  public $Product;
  //--- license expiration date
  public $ExpirationLicense;
  //--- license support date
  public $ExpirationSupport;
  //--- max. trade servers count (from license)
  public $LimitTradeServers;
  //--- max. web servers count (from license)
  public $LimitWebServers;
  //--- max. real accounts count (from license)
  public $LimitAccounts;
  //--- max. trade deals count (from license)
  public $LimitDeals;
  //--- max. symbols count (from license)
  public $LimitSymbols;
  //--- max. client groups count (from license)
  public $LimitGroups;
  //--- LiveUpdate mode (type is MTEnUpdateMode)
  public $LiveUpdateMode;
  //--- Total users
  public $TotalUsers;
  //--- Total real users
  public $TotalUsersReal;
  //--- Total deals
  public $TotalDeals;
  //--- Total orders
  public $TotalOrders;
  //--- Total history orders
  public $TotalOrdersHistory;
  //--- Total positions
  public $TotalPositions;
  //--- Account Allocation URL
  public $AccountURL;
  //--- Account auto-allocation
  public $AccountAuto;
}