<?php

abstract class Contractconfig_Hook {
  protected $log;
  
  protected $required_product_attributes = [];
  protected $contract;
  protected $items;
  
  protected $product;
  protected $product_attributes = [];
  
  protected $config_prefix;
  protected $configitems = [];
  
  public $errors = [];
  
  
  abstract public function beforeSave();
  abstract public function afterSave();
  
  abstract public function beforeCancel();
  abstract public function afterCancel();
  
  
  public function __construct(Contract $contract) {
    $this->log = mfLoghandler::singleton();
    
    $this->contract = $contract;
    
    if($contract->product) {
      $this->product = $contract->product;
      if(is_array($this->product->attributes) && count($this->product->attributes)) {
        $this->product_attributes = $this->product->attributes;
      }
    }
    
    $this->loadConfigItems();
    
    if(method_exists($this, "init")) {
      $this->init();
    }
  }
  
  private function loadConfigItems() {
    $m = [];
    if(preg_match('/^Contractconfig_Hook_(.+)$/', get_class($this), $m)) {
      if($m[1]) {
        $this->config_prefix = strtolower($m[1]);
      }
    } else {
      return false;
    }
    
    foreach($this->contract->configgroups as $configgroup) {
      foreach($configgroup->items as $item) {
        if(strpos($item->name, $this->config_prefix) === 0) {
          $short_name = substr($item->name, strlen($this->config_prefix)+1);
          //var_dump($short_name);
          $this->configitems[$short_name] = $item;
        }
      }
    }
    
    return true;
  }
  
  public function isResponsible() {
    if(!$this->contract) return false;
    if(!$this->product) return false;
    if(!$this->product_attributes) return false;
    
    // only work on contracts with our producttech attributes
    if(!$this->testMyProductAttributes()) {
      return false;
    }
    
    return true;
  }
  
  private function testMyProductAttributes() {
    if(!$this->product_attributes) return false;
    
    //var_dump($this->product_attributes);exit;
    //var_dump($this->required_product_attributes);exit;
    foreach($this->required_product_attributes as $needed_attribute) {
      // every needed attribute must exist in product
      if(!array_key_exists($needed_attribute, $this->product_attributes)) {
        return false;
      }
    }
    
    return true;
    
  }
  
  
  
}