<?php

class Preorder extends mfBaseModel {
  protected $forcestr = ['street','company','zip','phone','email','note'];
  private $in_after_save = 0;
  
  private $status;
  private $campaign;
  private $partner;
  private $building;
  private $adb_hausnummer;
  private $adb_wohneinheit;
  private $services;
  private $ordered_services;
  private $creator;
  private $editor;
  private $attribute = [];
  private $logistics;
  
  public function afterLoad() {
    if($this->uid === "string") {
      $this->uid = "";
    }
  }
  
  public function afterSave() {
    // reset auto magic properties
    $this->status = null;
    $this->campaign = null;
    $this->partner = null;
    $this->building = null;
    $this->adb_hausnummer = null;
    $this->adb_wohneinheit = null;
    $this->services = null;
    $this->ordered_services = null;
    $this->creator = null;
    $this->editor = null;
    
    // prevent potential infinite loop
    if($this->in_after_save) return true;
    $this->in_after_save++;
    // update preorder OAID if it's different from the unit OAID
    // but only if the unit OAID is of the same origin as the campaign
    $old_oaid = $this->oaid;
    
    $this->setOrCreateOaid();
    if($this->oaid != $old_oaid) {
      $this->save();
    }
    
    // run triggers based on new status
    $this->runStatusTrigger();
    // Cascade status changes down to adb_hausnummer and adb_wohneinheit
    $this->cascadeStatus();
    // Cascade status changes down all active preorders with the same hausnummer
    $this->cascadeStatusToPreorders();
    
    $this->in_after_save--;
  }
  
  public function runStatusTrigger() {
    if(!$this->id) return true;
    if($this->status_id == $this->_old_data->status_id) return true;
    
    $this->log->debug(__METHOD__." running");
    
    $new_status = $this->getProperty("status");
    $old_status = new Preorderstatus($this->_old_data->status_id);
    
    if(!$new_status->id || !$old_status->id) return true;
    $this->log->debug(__METHOD__." status changed from '".($old_status ? $old_status->code : "")."' to '".$new_status->code."'");
    
    if($new_status->code <= $old_status->code) return true;
    
    if(!defined("TT_PREORDER_STATUS_MATRIX") || !TT_PREORDER_STATUS_MATRIX) {
      $this->log->error("config TT_PREORDER_STATUS_MATRIX not defined!");
    }
    
    // run every trigger bnetween old and new status code
    foreach(TT_PREORDER_STATUS_MATRIX as $intermediate_code => $status) {
      if($intermediate_code <= $old_status->code) continue;
      if($intermediate_code > $new_status->code) continue;
      
      $code = $intermediate_code;
      // find trigger for new status code
      $classname = "Preorder_Statustrigger_$code";
      $filepath = __DIR__."/statustrigger/$code.php";
      
      $this->log->debug(__METHOD__.": Looking for $classname in $filepath");
      
      if(!file_exists($filepath)) {
        $this->log->debug(__METHOD__.": $filepath not found");
        continue;
      }

      require_once $filepath;

      if(!class_exists($classname)) {
        $this->log->debug(__METHOD__.": $classname not found");
        continue;
      }

      $trigger = new $classname($this, $new_status);
      $trigger->run();
      
    }
    
    
    
    return true;
    
  }
  
  /*
   * Cascade status changes down to adb_hausnummer and adb_wohneinheit
   */
  public function cascadeStatus() {
    
    /*
     * defines status alignments of preorder status to hausnummer (h) and wohneinheit (w)
     * if h or w are greater than defined here, don't change them
     * 
     * $statusmatrix = [
     *   "preorder_status_code" => [
     *     "h" => adb_status_code,
     *     "w" => adb_status_code
     *   ]
     * ]
     */
    
    if(!$this->adb_hausnummer_id && !$this->adb_wohneinheit_id) {
      return true;
    }
    
    if(!defined("TT_PREORDER_STATUS_MATRIX") || !is_array(TT_PREORDER_STATUS_MATRIX) || !count(TT_PREORDER_STATUS_MATRIX)) {
      $this->log->warning(__METHOD__.": TT_PREORDER_STATUS_MATRIX undefined! Cannot cascade Preorder status to Hausnummer and Wohneinheit");
      return true;
    }
    
    $new_status = new Preorderstatus($this->status_id);
    if(!$new_status->id) {
      $this->log->warning(__METHOD__.": Preorder has invalid status!");
      return true;
    }
    
    if(!array_key_exists($new_status->code, TT_PREORDER_STATUS_MATRIX)) {
      return true;
    }
    
    $cascade = TT_PREORDER_STATUS_MATRIX[$new_status->code];
    
    if($cascade["h"] && $this->adb_hausnummer_id) {
      // set new hausnummer status
      $new_hausnummer_status = ADBStatusModel::getFirst(["code" => $cascade["h"]]);
      if(!$new_hausnummer_status) {
        $this->log->warning(__METHOD__.": new ADBStatus code ".$cascade["h"]." not found!");
        return true;
      }
      
      $hausnummer = new ADBHausnummer($this->adb_hausnummer_id);
      if(!$hausnummer->id) {
        $this->log->warning(__METHOD__.": hausnummer ".$this->adb_hausnummer_id." not found!");
        return true;
      }
      
      $this->log->debug(__METHOD__.": new hausnummer status code ".$new_hausnummer_status->code);
      
      // only update if current status is less than new status
      if($hausnummer->status->code < $new_hausnummer_status->code) {
        $this->log->debug(__METHOD__.": Setting new hausnummer status code: ".$new_hausnummer_status->code);
        $hausnummer->status_id = $new_hausnummer_status->id;
        $hausnummer->save();
      }
    }
    
    if($cascade["w"] && $this->adb_wohneinheit_id) {
      // set new wohneinheit status
      $new_wohneinheit_status = ADBStatusModel::getFirst(["code" => $cascade["w"]]);
      if(!$new_wohneinheit_status) {
        $this->log->warning(__METHOD__.": new ADBStatus code ".$cascade["w"]." not found!");
        return true;
      }
      
      $wohneinheit = new ADBWohneinheit($this->adb_wohneinheit_id);
      if(!$wohneinheit->id) return true;
      
      $this->log->debug(__METHOD__.": new wohneinheit status code ".$new_wohneinheit_status->code);
      // only update if current status is less than new status
      if($wohneinheit->status->code < $new_wohneinheit_status->code) {
        $this->log->debug(__METHOD__.": Setting new wohneinheit status code: ".$new_wohneinheit_status->code);
        $wohneinheit->status_id = $new_wohneinheit_status->id;
        $wohneinheit->save();
      }
    }
    
    return true;
    
  }
  
  private function cascadeStatusToPreorders() {
    $status = new Preorderstatus($this->status_id);
    if(!$status->id) {
      return false;
    }
    
    if($this->adb_hausnummer_id) {
      foreach(PreorderModel::searchActive(["adb_hausnummer_id" => $this->adb_hausnummer_id, "<status_code" => $status->code]) as $preorder) {
        if($preorder->deleted) continue;
        if($preorder->id == $this->id) continue;
        
        // load status explicitly to work around 
        // visibility in different instances of same class
        $tmp_s = $preorder->getProperty("status");
        
        /*if(!$preorder->status->code || !$status->code) {
          $this->log->debug("Preorder->status->code". print_r($preorder->status, true));
          $this->log->debug("Status->code". print_r($status->code, true));
        }*/
        
        if($preorder->status->code < $status->code && $status->code <= 244) {
          $preorder->status_id = $this->status_id;
          $preorder->save();
        }
      }
    }
    
    return true;
  }
  
  public function setOrCreateOaid($oaid_attributes = false) {
    $campaign = new Preordercampaign($this->preordercampaign_id);
    //var_dump($campaign);exit;
    if(!$campaign->id) {
      return false;
    }
    
    if(!$this->adb_wohneinheit_id) {
      return false;
    }
    
    $wohneinheit = new ADBWohneinheit($this->adb_wohneinheit_id);
    
    if($this->oaid) {
      // If current OAID is from correct Origin then do nothing
      if($campaign->oaid_origin == "thetool") {
        $current_oaid = OpenAccessIdModel::getFirstOaid($this->oaid);
        if($current_oaid) {
          $this->log->warning("OAID of Preorder ".$this->id." should be thetool, but is OFAA");
        }
      } elseif($campaign->oaid_origin == "ofaa") {
        $current_oaid = OpenAccessIdModel::getFirstOaid($this->oaid);
        //var_dump($current_oaid);exit;
        if(!$current_oaid) {
          $this->log->error("OAID of Preorder ".$this->id." not found in OpenAccessIds");
          // assume it's from a different origin
        } else {
          if($campaign->oaid_origin == $current_oaid->origin) {
            // also check if wohneinheit has no oaid and set it
            if(!$wohneinheit->oaid) {
              $wohneinheit->oaid = $current_oaid->oaid;
              $wohneinheit->save();
            }
            return true;
          }
        }
      }
    }
    
    if($this->type == "interest") return true;

    if(!$this->id) {
      $this->log->error(__METHOD__.": Tried to create OAID in unsaved Preorder");
      throw new Exception(__METHOD__.": Tried to create OAID in unsaved Preorder");
    }
    
    
    
    // use Wohneinehit OAID if available and from same origin
    $unit_oaid = $this->getOaidFromWohneinheitIfOriginMatch();
    if($unit_oaid) {
      $this->oaid = $unit_oaid;
      $this->save();
      return true;
    }
    
    
    // else create new OAID
    
    if(!$campaign->network) {
      $this->log->warning(__METHOD__.": Cannot create OAID: Invalid campaign Network");
      return false;
    }
    $netowner = new Address($campaign->network->owner_id);
    if(!$netowner->id) {
      $this->log->warning(__METHOD__.": Cannot create OAID: Invalid campaign Network Owner");
      return false;
    }
    
    switch($campaign->oaid_origin) {
      case "ofaa":
        if(!$oaid_attributes) {
          $oaid_attributes = [
            "origin" => $campaign->oaid_origin,
            "owner_id" => $campaign->network->owner_id
          ];
        }
        
        // get new OFAA OAID
        $oaid = new OpenAccessId();
        $oaid->loadRandomUnassigned($oaid_attributes);
        
        if(!$oaid->oaid) {
          $this->log->error("Keine weiteren OAIDs verfügbar");
          throw new Exception("Keine weiteren OAIDs verfügbar in ".$netowner->getCompanyOrName());
        } else {
          // make sure this OAID is not in use on another wohneinheit by accident
          $oaid_unit_count = ADBWohneinheitModel::count(['oaid' => $oaid->oaid]);
          $oaid_unit_try = 0;
          while($oaid_unit_count) {
            if($oaid_unit_try > 5) {
              $this->log->error(__METHOD__.": Can't find random OAID which is not already used in Wohneinheit by accident after 5 tries. Giving up");
              throw new Exception("Can't find random OAID which is not already used in Wohneinheit by accident after 5 tries. Giving up");
            }
            $oaid_unit_try++;
            
            $oaid = new OpenAccessId();
            $oaid->loadRandomUnassigned($oaid_attributes);
            $oaid_unit_count = ADBWohneinheitModel::count(['oaid' => $oaid->oaid]);
          }
        }
        
        if(!$oaid->oaid) {
          $this->log->error(__METHOD__.": Cannot generate OAID: OpenAccessId::loadRandomUnassigned() failed.");
          return false;
        }
        
        if($wohneinheit->oaid != $oaid->oaid) {
          $wohneinheit->oaid = $oaid->oaid;
          $wohneinheit->save();
        }
        
        $this->oaid = $oaid->oaid;
        
        $oaid->assigned = date('U');
        $oaid->adb_wohneinheit_id = $wohneinheit->id;
        $oaid->address = $wohneinheit->hausnummer->getAddress();
        $oaid->unit_string = (string)$wohneinheit;
        //var_dump($oaid);exit;
        if(!$oaid->save()) {
          $this->log->error("Fehler beim Speichern der OAID für Preorder ".$this->id);
          $this->redirect("Preordercampaign", "Admin");
        }
        if(!$this->save()) {
          $oaid->assigned = 0;
          $oaid->adb_wohneinheit_id = null;
          $oaid->address = null;
          $oaid->unit_string = null;
          $oaid->save();
          return false;
        }
        
        break;
      case "thetool":
        // create new thethool OAID
        $wohneinheit = new ADBWohneinheit($this->adb_wohneinheit_id);
        if(!$wohneinheit->oaid) {
          $wohneinheit->oaid = $wohneinheit->getNewOAID();
          $wohneinheit->save();
        }
        if($wohneinheit->oaid) {
          $this->oaid = $wohneinheit->oaid;
        }
        $this->save();
        break;
    }
    
    return true;
  }
  
  private function getOaidFromWohneinheitIfOriginMatch() {
    if($this->adb_wohneinheit_id) {
      $unit = new ADBWohneinheit($this->adb_wohneinheit_id);
      if($unit && $unit->oaid && $this->oaid != $unit->oaid) {
        $campaign = new Preordercampaign($this->preordercampaign_id);
        $unit_oaid = OpenAccessIdModel::getFirst(["oaid" => $unit->oaid]);
        if($unit_oaid && $unit_oaid->origin == $campaign->oaid_origin) {
          return $unit->oaid;
        }
      }
    }
  }
  
  public function createUcode() {
    $ucode = $this->generateNewUcode();
    while(PreorderModel::search(['ucode' => $ucode])) {
      $ucode = $this->generateNewUcode();
    }
    $this->ucode = $ucode;
    return $this->ucode;
  }
  
  
  
  private function generateNewUcode() {
    $chars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
    $charsLength = strlen($chars);
    $ucode = '';
    for ($i = 0; $i < 8; $i++) {
        $ucode .= $chars[rand(0, $charsLength - 1)];
    }
    return $ucode;
  }
  
  public function createCiftoken() {
    $ciftoken = $this->generateNewCiftoken();
    while(PreorderModel::getFirst(['ciftoken' => $ciftoken])) {
      $ciftoken = $this->generateNewCiftoken();
    }
    $this->ciftoken = $ciftoken;
    return $this->ciftoken;
  }
  
  private function generateNewCiftoken() {
    $chars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxzy';
    $charsLength = strlen($chars);
    $ciftoken = '';
    for ($i = 0; $i < 16; $i++) {
        $ciftoken .= $chars[rand(0, $charsLength - 1)];
    }
    return $ciftoken;
  }
  
  public function generateCifUrl() {
    $campaign = $this->getProperty("campaign");
    
    $cifurl = $campaign->cifurl;
    str_replace("{{CIFTOKEN}}", $this->ciftoken, $cifurl);
    
    return $cifurl;
  }
  
  public function generateCifCableUrl() {
    $campaign = $this->getProperty("campaign");
    
    $cifcableurl = $campaign->cifcableurl;
    str_replace("{{}}", $this->ciftoken, $cifcableurl);
    
    return $cifcableurl;
  }
  
  public function getCifdataApiArray() {
    if(!$this->id) {
      return false;
    }
    
    $hausnummer = $this->getProperty("adb_hausnummer");
    $wohneinheit = $this->getProperty("adb_wohneinheit");
    $campaign = $this->getProperty("campaign");
    
    $a = [];
    $a["ciftoken"] = $this->ciftoken;
    $a["code"] = $this->ucode;
    $a['oaid'] = $this->oaid;
    
    $a['company'] = ($this->company) ? $this->company : null;
    $a['uid'] = ($this->uid) ? $this->uid : null;
    $a['firstnam'] = ($this->firstname) ? $this->firstname : null;
    $a['lastname'] = ($this->lastname) ? $this->lastname : null;
    
    $a['street'] = $hausnummer->strasse->name;
    $a['housenumber'] = $hausnummer->hausnummer;
    $a['zip'] = $hausnummer->plz->plz;
    $a['city'] = $hausnummer->strasse->gemeinde->name;
    $a['municipality'] = "";
    $a['district'] = $hausnummer->ortschaft->name;
    $a['block'] = ($wohneinheit->block) ? $wohneinheit->block : null;
    $a['stock'] = ($wohneinheit->stock) ? $wohneinheit->stock : null;
    $a['stiege'] = ($wohneinheit->stiege) ? $wohneinheit->stiege : null;
    $a['tuer'] = ($wohneinheit->tuer) ? $wohneinheit->tuer : null;
    
    if($campaign->district_is_city) {
      $a['city'] = $hausnummer->ortschaft->name;
      $a['municipality'] = $hausnummer->strasse->gemeinde->name;
    } else {
      unset($a['municipality']);
    }
    
    return $a;
  }
  
  public function getApiArray() {
    if(!$this->id) {
      return false;
    }
    
    $hausnummer = $this->getProperty("adb_hausnummer");
    $wohneinheit = $this->getProperty("adb_wohneinheit");
    $campaign = $this->getProperty("campaign");
    
    
    $a = [];
    $a['code'] = strtoupper($this->ucode);
    $a['oaid'] = $this->oaid;
    $a['extref'] = $this->extref;
    $a['orderDate'] = ($this->order_date) ? date("Y-m-d",$this->order_date) : null;
    $a['status'] = $this->getProperty("status")->getApiArray();
    $a['ciftoken'] = ($this->ciftoken) ? $this->ciftoken : null;
    $a['cifurl'] = ($this->cifurl) ? $this->cifurl : null;
    $a['cifcableurl'] = ($this->cifcableurl) ? $this->cifcableurl : null;
    $a['installationDate'] = ($this->installation_date) ? date("c", $this->installation_date) : null;
    $a['connectionType'] = $this->connection_type;
    $a['connectionCount'] = ($this->connection_count) ? (int)$this->connection_count : 1;
    $a['isAdditionalOrder'] = ($this->is_additional_order) ? true : false;
    $a['technology'] = ($this->technology) ? $this->technology : null;
    $a['equipment_name'] = ($wohneinheit->getPatchEqString()) ? $wohneinheit->getPatchEqString(): null;
    $a['equipment_port'] = ($wohneinheit->patch_port) ? $wohneinheit->patch_port: null;
    $a['preorderType'] = $this->type;
    $a['acceptMarketing'] = ($this->accept_marketing) ? true : false;
    $a['acceptAgb'] = ($this->accept_agb) ? true : false;
    $a['acceptDsgvo'] = ($this->accept_dsgvo) ? true : false;
    $a['acceptWithdrawal'] = ($this->accept_withdrawal) ? true : false;
    $a['acceptDigging'] = ($this->accept_digging) ? true : false;
    $a['address_info'] = ($this->address_info) ? $this->address_info : null;
    
    $address = [];
    $address['cluster_id'] = $hausnummer->netzgebiet->extref;
    $address['street'] = $hausnummer->strasse->name;
    $address['housenumber'] = $hausnummer->hausnummer;
    $address['zip'] = $hausnummer->plz->plz;
    $address['city'] = $hausnummer->strasse->gemeinde->name;
    $address['municipality'] = "";
    $address['district'] = $hausnummer->ortschaft->name;
    $address['block'] = ($wohneinheit->block) ? $wohneinheit->block : null;
    $address['stock'] = ($wohneinheit->stock) ? $wohneinheit->stock : null;
    $address['stiege'] = ($wohneinheit->stiege) ? $wohneinheit->stiege : null;
    $address['tuer'] = ($wohneinheit->tuer) ? $wohneinheit->tuer : null;
    $address['unit_string'] = ($wohneinheit->bezeichner) ? $wohneinheit->bezeichner : null;
    $address['is_shipping'] = ($this->shipping_address == "address") ? true : false;
    
    if($campaign->district_is_city) {
      $address['city'] = $hausnummer->ortschaft->name;
      $address['municipality'] = $hausnummer->strasse->gemeinde->name;
    } else {
      unset($address['municipality']);
    }
    
    $customer = [];
    $customer['company'] = ($this->company) ? $this->company : null;
    $customer['uid'] = ($this->uid) ? $this->uid : null;
    $customer['firstnam'] = ($this->firstname) ? $this->firstname : null;
    $customer['lastname'] = ($this->lastname) ? $this->lastname : null;
    $customer['street'] = ($this->street) ? $this->street : null;
    $customer['housenumber'] = ($this->housenumber) ? $this->housenumber : null;
    $customer['zip'] = ($this->zip) ? $this->zip : null;
    $customer['city'] = ($this->city) ? $this->city : null;
    $customer['block'] = ($this->block) ? $this->block : null;
    $customer['stock'] = ($this->stock) ? $this->stock : null;
    $customer['stiege'] = ($this->stiege) ? $this->stiege : null;
    $customer['tuer'] = ($this->tuer) ? $this->tuer : null;
    $customer['unit_string'] = ($this->unit_string) ? $this->unit_string : null;
    $customer['phone'] = ($this->phone) ? $this->phone : null;
    $customer['email'] = ($this->email) ? $this->email : null;
    
    $a['address'] = $address;
    $a['customer'] = $customer;
    
    $a['addonServices'] = null;
    if($this->addon_services) {
      $addon_services = json_decode($this->addon_services);
      if(json_last_error() === JSON_ERROR_NONE) {
        $a['addonServices'] = $addon_services;
      }
    }
    
    $a['additionalData'] = null;
    if($this->addon_data) {
      $addon_data = json_decode($this->addon_data);
      if(json_last_error() === JSON_ERROR_NONE) {
        $a['additionalData'] = $addon_data;
      }
    }
    
    $a['created'] = date("c", $this->create);
    $a['created_ts'] = (int)$this->create;
    $a['updated'] = date("c", $this->edit);
    $a['updated_ts'] = (int)$this->edit;
    
    return $a;
  }
  
  
  public function getProperty($name) {
    if($this->$name == null) {
      
      if($name == "campaign") {
        $this->campaign = new Preordercampaign($this->preordercampaign_id);
        return $this->campaign;
      }
      
      if($name == "status") {
        $this->status = mfValuecache::singleton()->get("mfObjectmodel-Preorderstatus-".$this->status_id);
        if(!$this->status) {
          $this->status = new Preorderstatus($this->status_id);
          if($this->status->id) {
            mfValuecache::singleton()->set("mfObjectmodel-Preorderstatus-".$this->status_id, $this->status);
          }
        }
        return $this->status;
      }
      
      if($name == "partner") {
        $this->partner = mfValuecache::singleton()->get("mfObjectmodel-Address-".$this->partner_id);
        if(!$this->partner) {
          $this->partner = new Address($this->partner_id);
          if($this->partner->id) {
            mfValuecache::singleton()->set("mfObjectmodel-Address-".$this->partner_id, $this->partner);
          }
        }
        return $this->partner;
      }
      
      if($name == "building") {
        $this->building = mfValuecache::singleton()->get("mfObjectmodel-Building-".$this->building_id);
        if(!$this->building) {
          $this->building = new Building($this->building_id);
          if($this->building->id) {
            mfValuecache::singleton()->set("mfObjectmodel-Building-".$this->building_id, $this->building);
          }
        }
        return $this->building;
      }
      
      if($name == "adb_hausnummer") {
        $this->adb_hausnummer = new ADBHausnummer($this->adb_hausnummer_id);
        return $this->adb_hausnummer;
      }
      
      if($name == "adb_wohneinheit") {
        $this->adb_wohneinheit = new ADBWohneinheit($this->adb_wohneinheit_id);
        return $this->adb_wohneinheit;
      }
      
      if($name == "services") {
        if(!$this->addon_services) {
          return null;
        }
        $addon_services = json_decode($this->addon_services);
        if(json_last_error() === JSON_ERROR_NONE) {
          $this->services = $addon_services;
          return $this->services;
        }
        return null;
      }
      
      if($name == "ordered_services") {
        if(!$this->addon_services) {
          return null;
        }
        $ordered_services = [];
        $addon_services = json_decode($this->addon_services);
        if(json_last_error() === JSON_ERROR_NONE) {
          foreach($addon_services as $s) {
            if($s->ordered) {
              $ordered_services[] = $s;
            }
          }
          
          $this->ordered_services = $ordered_services;
          return $this->ordered_services;
        }
        return null;
      }
      
      if($name == "logistics") {
        $logistics = PreorderlogisticsModel::getFirst(["preorder_id" => $this->id]);
        $this->logistics = $logistics;
        return $this->logistics;
      }
      
      if($name == "attribute") {
        if(!$this->attributes) {
          return null;
        }
        $this->attribute = json_decode($this->attributes, true);
        return $this->attribute;
      }
      
      if($name == "creator") {
        $user = mfValuecache::singleton()->get("Worker-id-".$this->create_by);
        if($user) {
          $this->creator = $user;
          return $this->creator;
        }
        $this->creator = new User($this->create_by);
        if($this->creator->id) {
          mfValuecache::singleton()->set("Worker-id-".$this->create_by, $this->creator);
        }
        return $this->creator;
      }
      
      if($name == "editor") {
        $this->editor = new User($this->edit_by);
        return $this->editor;
      }
      
      $classname = ucfirst($name);
      $idfield = $name."_id";
      $this->$name = mfValuecache::singleton()->get("mfObjectmodel-$name-".$this->$idfield);
      if(!$this->$name) {
        $this->$name = new $classname($this->$idfield);
      }
      
      if($this->$name->id) {
        mfValuecache::singleton()->set("mfObjectmodel-$name-".$this->$name->id, $this->$name);
        return $this->$name;
      } else {
        return null;
      }
    }
    
    return $this->$name;
  }
  
  public function __clone() {
    $me = new User;
    $me->loadMe();
    
    $old_id = $this->id;
    //$old_ucode = $this->ucode;
    $this->id = null;

    $this->data = clone($this->data);
    $this->_old_data = new StdClass();
    
    $this->status = null;
    $this->campaign = null;
    $this->partner = null;
    $this->building = null;
    $this->adb_hausnummer = null;
    $this->adb_wohneinheit;
    
    // cleanup Preorder data
    $this->create_by = $me->id;
    $this->edit_by = $me->id;
    
    $this->create = null;
    $this->edit = null;
    $this->saved = 0;
    $this->mode = "new";
    
    //$this->save();
    $this->log->debug("Cloned Preorder $old_id");
  }
}