ProductCombination.class.php

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<?php
/* Copyright (C) 2016   Marcos García     <marcosgdf@gmail.com>
 * Copyright (C) 2018   Juanjo Menent     <jmenent@2byte.es>
 * Copyright (C) 2022     Open-Dsi        <support@open-dsi.fr>
 * Copyright (C) 2024   MDW           <mdeweerd@users.noreply.github.com>
 * Copyright (C) 2024       Frédéric France         <frederic.france@free.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */
 
class ProductCombination
{
  public $db;
 
  public $id;
 
  public $fk_product_parent;
 
  public $fk_product_child;
 
  public $variation_price;
 
  public $variation_price_percentage = false;
 
  public $variation_weight;
 
  public $entity;
 
  public $combination_price_levels;
 
  public $variation_ref_ext = '';
 
  public $error;
 
  public $errors = array();
 
  public function __construct(DoliDB $db)
  {
    global $conf;
 
    $this->db = $db;
    $this->entity = $conf->entity;
  }
 
  public function fetch($rowid)
  {
    $sql = "SELECT rowid, fk_product_parent, fk_product_child, variation_price, variation_price_percentage, variation_weight, variation_ref_ext FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE rowid = ".((int) $rowid)." AND entity IN (".getEntity('product').")";
 
    $query = $this->db->query($sql);
 
    if (!$query) {
      return -1;
    }
 
    if (!$this->db->num_rows($query)) {
      return -1;
    }
 
    $obj = $this->db->fetch_object($query);
 
    $this->id = $obj->rowid;
    $this->fk_product_parent = $obj->fk_product_parent;
    $this->fk_product_child = $obj->fk_product_child;
    $this->variation_price = $obj->variation_price;
    $this->variation_price_percentage = $obj->variation_price_percentage;
    $this->variation_weight = $obj->variation_weight;
    $this->variation_ref_ext = $obj->variation_ref_ext;
 
    if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
      $this->fetchCombinationPriceLevels();
    }
 
    return 1;
  }
 
 
  public function fetchCombinationPriceLevels($fk_price_level = 0, $useCache = true)
  {
    // Check cache
    if (!empty($this->combination_price_levels) && $useCache) {
      if ((!empty($fk_price_level) && isset($this->combination_price_levels[$fk_price_level])) || empty($fk_price_level)) {
        return 1;
      }
    }
 
    if (!is_array($this->combination_price_levels)
      || empty($fk_price_level) // if fetch an unique level don't erase all already fetched
    ) {
      $this->combination_price_levels = array();
    }
 
    $staticProductCombinationLevel = new ProductCombinationLevel($this->db);
    $combination_price_levels = $staticProductCombinationLevel->fetchAll($this->id, $fk_price_level);
 
    if (!is_array($combination_price_levels)) {
      return -1;
    }
 
    if (empty($combination_price_levels)) {
      if ($fk_price_level > 0) {
        $combination_price_levels[$fk_price_level] = ProductCombinationLevel::createFromParent($this->db, $this, $fk_price_level);
      } else {
        $produit_multiprices_limit = getDolGlobalString('PRODUIT_MULTIPRICES_LIMIT');
        for ($i = 1; $i <= $produit_multiprices_limit; $i++) {
          $combination_price_levels[$i] = ProductCombinationLevel::createFromParent($this->db, $this, $i);
        }
      }
    }
 
    $this->combination_price_levels = $combination_price_levels;
 
    return 1;
  }
 
  public function saveCombinationPriceLevels($clean = 1)
  {
    global $conf;
 
    $error = 0;
 
    $staticProductCombinationLevel = new ProductCombinationLevel($this->db);
 
    // Delete all
    if (empty($this->combination_price_levels)) {
      return $staticProductCombinationLevel->deleteAllForCombination($this->id);
    }
 
    // Clean not needed price levels (level higher than number max defined into setup)
    if ($clean) {
      $res = $staticProductCombinationLevel->clean($this->id);
      if ($res < 0) {
        $this->errors[] = 'Fail to clean not needed price levels';
        return -1;
      }
    }
 
    foreach ($this->combination_price_levels as $fk_price_level => $combination_price_level) {
      $res = $combination_price_level->save();
      if ($res < 1) {
        $this->error = 'Error saving combination price level '.$fk_price_level.' : '.$combination_price_level->error;
        $this->errors[] = $this->error;
        $error++;
        break;
      }
    }
 
    if ($error) {
      return $error * -1;
    } else {
      return 1;
    }
  }
 
  public function fetchByFkProductChild($productid, $donotloadpricelevel = 0)
  {
    global $conf;
 
    $sql = "SELECT rowid, fk_product_parent, fk_product_child, variation_price, variation_price_percentage, variation_weight";
    $sql .= " FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE fk_product_child = ".((int) $productid)." AND entity IN (".getEntity('product').")";
 
    $query = $this->db->query($sql);
 
    if (!$query) {
      return -1;
    }
 
    if (!$this->db->num_rows($query)) {
      return 0;
    }
 
    $result = $this->db->fetch_object($query);
 
    $this->id = $result->rowid;
    $this->fk_product_parent = $result->fk_product_parent;
    $this->fk_product_child = $result->fk_product_child;
    $this->variation_price = $result->variation_price;
    $this->variation_price_percentage = $result->variation_price_percentage;
    $this->variation_weight = $result->variation_weight;
 
    if (empty($donotloadpricelevel) && getDolGlobalString('PRODUIT_MULTIPRICES')) {
      $this->fetchCombinationPriceLevels();
    }
 
    return (int) $this->fk_product_parent;
  }
 
  public function fetchAllByFkProductParent($fk_product_parent, $sort_by_ref = false)
  {
    global $conf;
 
    $sql = "SELECT pac.rowid, pac.fk_product_parent, pac.fk_product_child, pac.variation_price, pac.variation_price_percentage, pac.variation_ref_ext, pac.variation_weight";
    $sql .= " FROM ".MAIN_DB_PREFIX."product_attribute_combination AS pac";
    if ($sort_by_ref) {
      $sql .= " LEFT JOIN ".MAIN_DB_PREFIX."product AS p ON p.rowid = pac.fk_product_child";
    }
    $sql .= " WHERE pac.fk_product_parent = ".((int) $fk_product_parent)." AND pac.entity IN (".getEntity('product').")";
    if ($sort_by_ref) {
      $sql .= $this->db->order('p.ref', 'ASC');
    }
 
    $query = $this->db->query($sql);
 
    if (!$query) {
      return -1;
    }
 
    $return = array();
 
    while ($result = $this->db->fetch_object($query)) {
      $tmp = new ProductCombination($this->db);
      $tmp->id = $result->rowid;
      $tmp->fk_product_parent = $result->fk_product_parent;
      $tmp->fk_product_child = $result->fk_product_child;
      $tmp->variation_price = $result->variation_price;
      $tmp->variation_price_percentage = $result->variation_price_percentage;
      $tmp->variation_weight = $result->variation_weight;
      $tmp->variation_ref_ext = $result->variation_ref_ext;
 
      if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
        $tmp->fetchCombinationPriceLevels();
      }
 
      $return[] = $tmp;
    }
 
    return $return;
  }
 
  public function countNbOfCombinationForFkProductParent($fk_product_parent)
  {
    $nb = 0;
    $sql = "SELECT count(rowid) as nb FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE fk_product_parent = ".((int) $fk_product_parent)." AND entity IN (".getEntity('product').")";
 
    $resql = $this->db->query($sql);
    if ($resql) {
      $obj = $this->db->fetch_object($resql);
      if ($obj) {
        $nb = $obj->nb;
      }
    }
 
    return $nb;
  }
 
  public function create($user)
  {
    global $conf;
 
    /* $this->fk_product_child may be empty and will be filled later after subproduct has been created */
 
    $sql = "INSERT INTO ".MAIN_DB_PREFIX."product_attribute_combination";
    $sql .= " (fk_product_parent, fk_product_child, variation_price, variation_price_percentage, variation_weight, variation_ref_ext, entity)";
    $sql .= " VALUES (".((int) $this->fk_product_parent).", ".((int) $this->fk_product_child).",";
    $sql .= (float) $this->variation_price.", ".(int) $this->variation_price_percentage.",";
    $sql .= (float) $this->variation_weight.", '".$this->db->escape($this->variation_ref_ext)."', ".(int) $this->entity.")";
 
    $resql = $this->db->query($sql);
    if ($resql) {
      $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX.'product_attribute_combination');
    } else {
      $this->error = $this->db->lasterror();
      return -1;
    }
 
    if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
      $res = $this->saveCombinationPriceLevels();
      if ($res < 0) {
        return -2;
      }
    }
 
    return 1;
  }
 
  public function update(User $user)
  {
    global $conf;
 
    $sql = "UPDATE ".MAIN_DB_PREFIX."product_attribute_combination";
    $sql .= " SET fk_product_parent = ".(int) $this->fk_product_parent.", fk_product_child = ".(int) $this->fk_product_child.",";
    $sql .= " variation_price = ".(float) $this->variation_price.", variation_price_percentage = ".(int) $this->variation_price_percentage.",";
    $sql .= " variation_ref_ext = '".$this->db->escape($this->variation_ref_ext)."',";
    $sql .= " variation_weight = ".(float) $this->variation_weight." WHERE rowid = ".((int) $this->id);
 
    $resql = $this->db->query($sql);
    if (!$resql) {
      return -1;
    }
 
    if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
      $res = $this->saveCombinationPriceLevels();
      if ($res < 0) {
        return -2;
      }
    }
 
    $parent = new Product($this->db);
    $parent->fetch($this->fk_product_parent);
 
    $this->updateProperties($parent, $user);
 
    return 1;
  }
 
  public function delete(User $user)
  {
    $this->db->begin();
 
    $comb2val = new ProductCombination2ValuePair($this->db);
    $comb2val->deleteByFkCombination($this->id);
 
    // remove combination price levels
    if (!$this->db->query("DELETE FROM ".MAIN_DB_PREFIX."product_attribute_combination_price_level WHERE fk_product_attribute_combination = ".(int) $this->id)) {
      $this->db->rollback();
      return -1;
    }
 
    $sql = "DELETE FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE rowid = ".(int) $this->id;
 
    if ($this->db->query($sql)) {
      $this->db->commit();
      return 1;
    }
 
    $this->db->rollback();
    return -1;
  }
 
  public function deleteByFkProductParent($user, $fk_product_parent)
  {
    $this->db->begin();
 
    foreach ($this->fetchAllByFkProductParent($fk_product_parent) as $prodcomb) {
      $prodstatic = new Product($this->db);
 
      $res = $prodstatic->fetch($prodcomb->fk_product_child);
 
      if ($res > 0) {
        $res = $prodcomb->delete($user);
      }
 
      if ($res > 0 && !$prodstatic->isObjectUsed($prodstatic->id)) {
        $res = $prodstatic->delete($user);
      }
 
      if ($res < 0) {
        $this->db->rollback();
        return -1;
      }
    }
 
    $this->db->commit();
    return 1;
  }
 
  public function updateProperties(Product $parent, User $user)
  {
    global $conf;
 
    $this->db->begin();
 
    $child = new Product($this->db);
    $child->fetch($this->fk_product_child);
 
    $child->price_autogen = $parent->price_autogen;
    $child->weight = $parent->weight;
    // Only when Parent Status are updated
    if (is_object($parent->oldcopy) && !$parent->oldcopy->isEmpty() && ($parent->status != $parent->oldcopy->status)) {
      $child->status = $parent->status;
    }
    if (is_object($parent->oldcopy) && !$parent->oldcopy->isEmpty() && ($parent->status_buy != $parent->oldcopy->status_buy)) {
      $child->status_buy = $parent->status_buy;
    }
 
    if ($this->variation_weight) {  // If we must add a delta on weight
      $child->weight = ($child->weight ? $child->weight : 0) + $this->variation_weight;
    }
    $child->weight_units = $parent->weight_units;
 
    // Don't update the child label if the user has already modified it.
    if ($child->label == $parent->label) {
      // This will trigger only at variant creation time
      $varlabel               = $this->getCombinationLabel($this->fk_product_child);
      $child->label           = $parent->label.$varlabel;
    }
 
 
    if ($child->update($child->id, $user) > 0) {
      $new_vat = $parent->tva_tx;
      $new_npr = $parent->tva_npr;
 
      // MultiPrix
      if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
        $produit_multiprices_limit = getDolGlobalInt('PRODUIT_MULTIPRICES_LIMIT');
        for ($i = 1; $i <= $produit_multiprices_limit; $i++) {
          if ($parent->multiprices[$i] != '' || isset($this->combination_price_levels[$i]->variation_price)) {
            $new_type = empty($parent->multiprices_base_type[$i]) ? 'HT' : $parent->multiprices_base_type[$i];
            $new_min_price = $parent->multiprices_min[$i];
            $variation_price = (float) (!isset($this->combination_price_levels[$i]->variation_price) ? $this->variation_price : $this->combination_price_levels[$i]->variation_price);
            $variation_price_percentage = (bool) (!isset($this->combination_price_levels[$i]->variation_price_percentage) ? $this->variation_price_percentage : $this->combination_price_levels[$i]->variation_price_percentage);
 
            if ($parent->prices_by_qty_list[$i]) {
              $new_psq = 1;
            } else {
              $new_psq = 0;
            }
 
            if ($new_type == 'TTC') {
              $new_price = $parent->multiprices_ttc[$i];
            } else {
              $new_price = $parent->multiprices[$i];
            }
 
            if ($variation_price_percentage) {
              if ($new_price != 0) {
                $new_price *= 1 + ($variation_price / 100);
              }
            } else {
              $new_price += $variation_price;
            }
 
            $ret = $child->updatePrice($new_price, $new_type, $user, $new_vat, $new_min_price, $i, $new_npr, $new_psq, 0, array(), $parent->default_vat_code);
 
            if ($ret < 0) {
              $this->db->rollback();
              $this->error = $child->error;
              $this->errors = $child->errors;
              return $ret;
            }
          }
        }
      } else {
        $new_type = $parent->price_base_type;
        $new_min_price = $parent->price_min;
        $new_psq = $parent->price_by_qty;
 
        if ($new_type == 'TTC') {
          $new_price = $parent->price_ttc;
        } else {
          $new_price = $parent->price;
        }
 
        if ($this->variation_price_percentage) {
          if ($new_price != 0) {
            $new_price *= 1 + ($this->variation_price / 100);
          }
        } else {
          $new_price += $this->variation_price;
        }
 
        $ret = $child->updatePrice($new_price, $new_type, $user, $new_vat, $new_min_price, 1, $new_npr, $new_psq);
 
        if ($ret < 0) {
          $this->db->rollback();
          $this->error = $child->error;
          $this->errors = $child->errors;
          return $ret;
        }
      }
 
      $this->db->commit();
 
      return 1;
    }
 
    $this->db->rollback();
    $this->error = $child->error;
    $this->errors = $child->errors;
    return -1;
  }
 
  public function fetchByProductCombination2ValuePairs($prodid, array $features)
  {
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductCombination2ValuePair.class.php';
 
    $actual_comp = array();
 
    $prodcomb2val = new ProductCombination2ValuePair($this->db);
    $prodcomb = new ProductCombination($this->db);
 
    $features = array_filter(
      $features,
      static function ($v) {
        return !empty($v);
      }
    );
 
    foreach ($features as $attr => $attr_val) {
      $actual_comp[$attr] = $attr_val;
    }
 
    foreach ($prodcomb->fetchAllByFkProductParent($prodid) as $prc) {
      $values = array();
 
      foreach ($prodcomb2val->fetchByFkCombination($prc->id) as $value) {
        $values[$value->fk_prod_attr] = $value->fk_prod_attr_val;
      }
 
      $check1 = count(array_diff_assoc($values, $actual_comp));
      $check2 = count(array_diff_assoc($actual_comp, $values));
 
      if (!$check1 && !$check2) {
        return $prc;
      }
    }
 
    return false;
  }
 
  public function getUniqueAttributesAndValuesByFkProductParent($productid)
  {
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductAttribute.class.php';
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductAttributeValue.class.php';
 
    // Attributes
    // Select all unique attributes of the variants (which are to sell) of a given parent product.
    $sql = "SELECT DISTINCT c2v.fk_prod_attr, a.position";
    $sql .= " FROM ".MAIN_DB_PREFIX."product_attribute_combination2val c2v";
    $sql .= " LEFT JOIN ".MAIN_DB_PREFIX."product_attribute_combination c";
    $sql .= "   ON c2v.fk_prod_combination = c.rowid";
    $sql .= " LEFT JOIN ".MAIN_DB_PREFIX."product p";
    $sql .= "   ON p.rowid = c.fk_product_child";
    $sql .= " LEFT JOIN ".MAIN_DB_PREFIX."product_attribute a";
    $sql .= "   ON a.rowid = fk_prod_attr";
    $sql .= " WHERE c.fk_product_parent = ".((int) $productid);
    $sql .= " AND p.tosell = 1";
    $sql .= $this->db->order('a.position', 'asc');
 
    $resql = $this->db->query($sql);
 
    // Values
    $variants = array();
    while ($obj = $this->db->fetch_object($resql)) {
      $attr = new ProductAttribute($this->db);
      $attr->fetch($obj->fk_prod_attr);
 
      $tmp = new stdClass();
      $tmp->id = $attr->id;
      $tmp->ref = $attr->ref;
      $tmp->label = $attr->label;
      $tmp->values = array();
 
      $attrval = new ProductAttributeValue($this->db);
      // fetch only the used values of this attribute
      foreach ($attrval->fetchAllByProductAttribute($attr->id, true) as $val) {
        '@phan-var-force ProductAttributeValue $val';
        $tmp->values[] = $val;
      }
 
      $variants[] = $tmp;
    }
 
    return $variants;
  }
 
  public function createProductCombination(User $user, Product $product, array $combinations, array $variations, $price_var_percent = false, $forced_pricevar = false, $forced_weightvar = false, $forced_refvar = false, $ref_ext = '')
  {
    global $conf;
 
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductAttribute.class.php';
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductAttributeValue.class.php';
 
    $this->db->begin();
 
    $price_impact = array(1 => 0); // init level price impact
 
    $forced_refvar = trim((string) $forced_refvar);
 
    if (!empty($forced_refvar) && $forced_refvar != $product->ref) {
      $existingProduct = new Product($this->db);
      $result = $existingProduct->fetch(0, $forced_refvar);
      if ($result > 0) {
        $newproduct = $existingProduct;
      } else {
        $existingProduct = false;
        $newproduct = clone $product;
        $newproduct->ref = $forced_refvar;
      }
    } else {
      $forced_refvar = false;
      $existingProduct = false;
      $newproduct = clone $product;
    }
 
    //Final weight impact
    $weight_impact = (float) $forced_weightvar; // If false, return 0
 
    //Final price impact
    if (!is_array($forced_pricevar)) {
      $price_impact[1] = (float) $forced_pricevar; // If false, return 0
    } else {
      $price_impact = $forced_pricevar;
    }
 
    if (!array($price_var_percent)) {
      $price_var_percent[1] = (float) $price_var_percent;
    }
 
    $newcomb = new ProductCombination($this->db);
    $existingCombination = $newcomb->fetchByProductCombination2ValuePairs($product->id, $combinations);
 
    if ($existingCombination) {
      $newcomb = $existingCombination;
    } else {
      $newcomb->fk_product_parent = $product->id;
 
      // Create 1 entry into product_attribute_combination (1 entry for each combinations). This init also $newcomb->id
      $result = $newcomb->create($user);
      if ($result < 0) {
        $this->error = $newcomb->error;
        $this->errors = $newcomb->errors;
        $this->db->rollback();
        return -1;
      }
    }
 
    $prodattr = new ProductAttribute($this->db);
    $prodattrval = new ProductAttributeValue($this->db);
 
    // $combination contains list of attributes pairs key->value. Example: array('id Color'=>id Blue, 'id Size'=>id Small, 'id Option'=>id val a, ...)
    foreach ($combinations as $currcombattr => $currcombval) {
      //This was checked earlier, so no need to double check
      $prodattr->fetch($currcombattr);
      $prodattrval->fetch($currcombval);
 
      //If there is an existing combination, there is no need to duplicate the valuepair
      if (!$existingCombination) {
        $tmp = new ProductCombination2ValuePair($this->db);
        $tmp->fk_prod_attr = $currcombattr;
        $tmp->fk_prod_attr_val = $currcombval;
        $tmp->fk_prod_combination = $newcomb->id;
 
        if ($tmp->create($user) < 0) {    // Create 1 entry into product_attribute_combination2val
          $this->error = $tmp->error;
          $this->errors = $tmp->errors;
          $this->db->rollback();
          return -1;
        }
      }
      if ($forced_weightvar === false) {
        $weight_impact += (float) price2num($variations[$currcombattr][$currcombval]['weight']);
      }
      if ($forced_pricevar === false) {
        $price_impact[1] += (float) price2num($variations[$currcombattr][$currcombval]['price']);
 
        // Manage Price levels
        if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
          $produit_multiprices_limit = getDolGlobalString('PRODUIT_MULTIPRICES_LIMIT');
          for ($i = 2; $i <= $produit_multiprices_limit; $i++) {
            $price_impact[$i] += (float) price2num($variations[$currcombattr][$currcombval]['price']);
          }
        }
      }
 
      if ($forced_refvar === false) {
        if (isset($conf->global->PRODUIT_ATTRIBUTES_SEPARATOR)) {
          $newproduct->ref .= getDolGlobalString('PRODUIT_ATTRIBUTES_SEPARATOR') . $prodattrval->ref;
        } else {
          $newproduct->ref .= '_'.$prodattrval->ref;
        }
      }
 
      //The first one should not contain a linebreak
      if ($newproduct->description) {
        $newproduct->description .= '<br>';
      }
      $newproduct->description .= '<strong>'.$prodattr->label.':</strong> '.$prodattrval->value;
    }
 
    $newcomb->variation_price_percentage = (bool) $price_var_percent[1];
    $newcomb->variation_price = $price_impact[1];
    $newcomb->variation_weight = $weight_impact;
    $newcomb->variation_ref_ext = $this->db->escape($ref_ext);
 
    // Init price level
    if (getDolGlobalString('PRODUIT_MULTIPRICES')) {
      $produit_multiprices_limit = getDolGlobalInt('PRODUIT_MULTIPRICES_LIMIT');
      for ($i = 1; $i <= $produit_multiprices_limit; $i++) {
        $productCombinationLevel = new ProductCombinationLevel($this->db);
        $productCombinationLevel->fk_product_attribute_combination = $newcomb->id;
        $productCombinationLevel->fk_price_level = $i;
        $productCombinationLevel->variation_price = $price_impact[$i];
 
        if (is_array($price_var_percent)) {
          $productCombinationLevel->variation_price_percentage = (bool) $price_var_percent[$i] ;
        } else {
          $productCombinationLevel->variation_price_percentage = $price_var_percent;
        }
 
        $newcomb->combination_price_levels[$i] = $productCombinationLevel;
      }
    }
    //var_dump($newcomb->combination_price_levels);
 
    $newproduct->weight += $weight_impact;
 
    // Now create the product
    //print 'Create prod '.$newproduct->ref.'<br>'."\n";
    if ($existingProduct === false) {
      //To avoid wrong information in price history log
      $newproduct->price = 0;
      $newproduct->price_ttc = 0;
      $newproduct->price_min = 0;
      $newproduct->price_min_ttc = 0;
 
      // A new variant must use a new barcode (not same product)
      $newproduct->barcode = -1;
      $result = $newproduct->create($user);
 
      if ($result < 0) {
        //In case the error is not related with an already existing product
        if ($newproduct->error != 'ErrorProductAlreadyExists') {
          $this->error = $newproduct->error;
          $this->errors = $newproduct->errors;
          $this->db->rollback();
          return -1;
        }
 
        if ($newcomb->fk_product_child) {
          $res = $newproduct->fetch($existingCombination->fk_product_child);
        } else {
          $orig_prod_ref = $newproduct->ref;
          $i = 1;
 
          do {
            $newproduct->ref = $orig_prod_ref.$i;
            $res = $newproduct->create($user);
 
            if ($newproduct->error != 'ErrorProductAlreadyExists') {
              $this->errors[] = $newproduct->error;
              break;
            }
 
            $i++;
          } while ($res < 0);
        }
 
        if ($res < 0) {
          $this->db->rollback();
          return -1;
        }
      }
    } else {
      $result = $newproduct->update($newproduct->id, $user);
      if ($result < 0) {
        $this->db->rollback();
        return -1;
      }
    }
 
    $newcomb->fk_product_child = $newproduct->id;
 
    if ($newcomb->update($user) < 0) {
      $this->error = $newcomb->error;
      $this->errors = $newcomb->errors;
      $this->db->rollback();
      return -1;
    }
 
    $this->db->commit();
    return $newproduct->id;
  }
 
  public function copyAll(User $user, $origProductId, Product $destProduct)
  {
    require_once DOL_DOCUMENT_ROOT.'/variants/class/ProductCombination2ValuePair.class.php';
 
    //To prevent a loop
    if ($origProductId == $destProduct->id) {
      return -1;
    }
 
    $prodcomb2val = new ProductCombination2ValuePair($this->db);
 
    //Retrieve all product combinations
    $combinations = $this->fetchAllByFkProductParent($origProductId);
 
    foreach ($combinations as $combination) {
      $variations = array();
 
      foreach ($prodcomb2val->fetchByFkCombination($combination->id) as $tmp_pc2v) {
        $variations[$tmp_pc2v->fk_prod_attr] = $tmp_pc2v->fk_prod_attr_val;
      }
 
      if ($this->createProductCombination(
        $user,
        $destProduct,
        $variations,
        array(),
        $combination->variation_price_percentage,
        $combination->variation_price,
        $combination->variation_weight
      ) < 0) {
        return -1;
      }
    }
 
    return 1;
  }
 
  public function getCombinationLabel($prod_child)
  {
    $label = '';
    $sql = 'SELECT pav.value AS label';
    $sql .= ' FROM '.MAIN_DB_PREFIX.'product_attribute_combination pac';
    $sql .= ' INNER JOIN '.MAIN_DB_PREFIX.'product_attribute_combination2val pac2v ON pac2v.fk_prod_combination=pac.rowid';
    $sql .= ' INNER JOIN '.MAIN_DB_PREFIX.'product_attribute_value pav ON pav.rowid=pac2v.fk_prod_attr_val';
    $sql .= ' WHERE pac.fk_product_child='.((int) $prod_child);
 
    $resql = $this->db->query($sql);
    if ($resql) {
      $num = $this->db->num_rows($resql);
 
      $i = 0;
 
      while ($i < $num) {
        $obj = $this->db->fetch_object($resql);
 
        if ($obj->label) {
          $label .= ' '.$obj->label;
        }
        $i++;
      }
    }
    return $label;
  }
}
 
 
 
class ProductCombinationLevel
{
  public $db;
 
  public $table_element = 'product_attribute_combination_price_level';
 
  public $id;
 
  public $fk_product_attribute_combination;
 
  public $fk_price_level;
 
  public $variation_price;
 
  public $variation_price_percentage = false;
 
  public $error;
 
  public $errors = array();
 
  public function __construct(DoliDB $db)
  {
    $this->db = $db;
  }
 
  public function fetch($rowid)
  {
    $sql = "SELECT rowid, fk_product_attribute_combination, fk_price_level, variation_price, variation_price_percentage";
    $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
    $sql .= " WHERE rowid = ".(int) $rowid;
 
    $resql = $this->db->query($sql);
    if ($resql) {
      $obj = $this->db->fetch_object($resql);
      if ($obj) {
        return $this->fetchFormObj($obj);
      }
    }
 
    return -1;
  }
 
 
  public function fetchAll($fk_product_attribute_combination, $fk_price_level = 0)
  {
    $result = array();
 
    $sql = "SELECT rowid, fk_product_attribute_combination, fk_price_level, variation_price, variation_price_percentage";
    $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
    $sql .= " WHERE fk_product_attribute_combination = ".intval($fk_product_attribute_combination);
    if (!empty($fk_price_level)) {
      $sql .= ' AND fk_price_level = '.intval($fk_price_level);
    }
 
    $res = $this->db->query($sql);
    if ($res) {
      if ($this->db->num_rows($res) > 0) {
        while ($obj = $this->db->fetch_object($res)) {
          $productCombinationLevel = new ProductCombinationLevel($this->db);
          $productCombinationLevel->fetchFormObj($obj);
          $result[$obj->fk_price_level] = $productCombinationLevel;
        }
      }
    } else {
      return -1;
    }
 
    return $result;
  }
 
  public function fetchFormObj($obj)
  {
    if (!$obj) {
      return -1;
    }
 
    $this->id = $obj->rowid;
    $this->fk_product_attribute_combination = (int) $obj->fk_product_attribute_combination;
    $this->fk_price_level = intval($obj->fk_price_level);
    $this->variation_price = (float) $obj->variation_price;
    $this->variation_price_percentage = (bool) $obj->variation_price_percentage;
 
    return 1;
  }
 
 
  public function save()
  {
    if (($this->id > 0 && empty($this->fk_product_attribute_combination)) || empty($this->fk_price_level)) {
      return -1;
    }
 
    // Check if level exist in DB before add
    if ($this->fk_product_attribute_combination > 0 && empty($this->id)) {
      $sql = "SELECT rowid id";
      $sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
      $sql .= " WHERE fk_product_attribute_combination = ".(int) $this->fk_product_attribute_combination;
      $sql .= ' AND fk_price_level = '.((int) $this->fk_price_level);
 
      $resql = $this->db->query($sql);
      if ($resql) {
        $obj = $this->db->fetch_object($resql);
        if ($obj) {
          $this->id = $obj->id;
        }
      }
    }
 
    // Update
    if (!empty($this->id)) {
      $sql = 'UPDATE '.MAIN_DB_PREFIX.$this->table_element;
      $sql .= ' SET variation_price = '.(float) $this->variation_price.' , variation_price_percentage = '.intval($this->variation_price_percentage);
      $sql .= ' WHERE rowid = '.((int) $this->id);
 
      $res = $this->db->query($sql);
      if ($res > 0) {
        return $this->id;
      } else {
        $this->error = $this->db->error();
        $this->errors[] = $this->error;
        return -1;
      }
    } else {
      // Add
      $sql = "INSERT INTO ".MAIN_DB_PREFIX.$this->table_element." (";
      $sql .= "fk_product_attribute_combination, fk_price_level, variation_price, variation_price_percentage";
      $sql .= ") VALUES (";
      $sql .= (int) $this->fk_product_attribute_combination;
      $sql .= ", ".intval($this->fk_price_level);
      $sql .= ", ".(float) $this->variation_price;
      $sql .= ", ".intval($this->variation_price_percentage);
      $sql .= ")";
 
      $res = $this->db->query($sql);
      if ($res) {
        $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX.$this->table_element);
      } else {
        $this->error = $this->db->error();
        $this->errors[] = $this->error;
        return -1;
      }
    }
 
    return $this->id;
  }
 
 
  public function delete()
  {
    $sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element." WHERE rowid = ".(int) $this->id;
    $res = $this->db->query($sql);
 
    return $res ? 1 : -1;
  }
 
 
  public function deleteAllForCombination($fk_product_attribute_combination)
  {
    $sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element." WHERE fk_product_attribute_combination = ".(int) $fk_product_attribute_combination;
    $res = $this->db->query($sql);
 
    return $res ? 1 : -1;
  }
 
 
  public function clean($fk_product_attribute_combination)
  {
    global $conf;
 
    $sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element;
    $sql .= " WHERE fk_product_attribute_combination = ".(int) $fk_product_attribute_combination;
    $sql .= " AND fk_price_level > ".(int) getDolGlobalString('PRODUIT_MULTIPRICES_LIMIT');
    $res = $this->db->query($sql);
 
    return $res ? 1 : -1;
  }
 
 
  public static function createFromParent(DoliDB $db, ProductCombination $productCombination, $fkPriceLevel)
  {
    $productCombinationLevel = new self($db);
    $productCombinationLevel->fk_price_level = $fkPriceLevel;
    $productCombinationLevel->fk_product_attribute_combination = $productCombination->id;
    $productCombinationLevel->variation_price = $productCombination->variation_price;
    $productCombinationLevel->variation_price_percentage = (bool) $productCombination->variation_price_percentage;
 
    return $productCombinationLevel;
  }
}