<?php
/*
* 2007-2011 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2011 PrestaShop SA
*  @version  Release: $Revision: 10014 $
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

/**
 * @since 1.5.0
 */
class SupplyOrderDetailCore extends ObjectModel
{
	/**
	 * @var int Supply order
	 */
	public $id_supply_order;

	/**
	 * @var int Product ordered
	 */
	public $id_product;

	/**
	 * @var int Product attribute ordered
	 */
	public $id_product_attribute;

	/**
	 * @var string Product reference
	 */
	public $reference;

	/**
	 * @var string Product supplier reference
	 */
	public $supplier_reference;

	/**
	 * @var int Product name
	 */
	public $name;

	/**
	 * @var int Product EAN13
	 */
	public $ean13;

	/**
	 * @var string UPC
	 */
	public $upc;

	/**
	 * @var int Currency used to buy this particular product
	 */
	public $id_currency;

	/**
	 * @var float Exchange rate between $id_currency and SupplyOrder::$id_ref_currency, at the time
	 */
	public $exchange_rate;

	/**
	 * @var float Unit price without discount, without tax
	 */
	public $unit_price_te = 0;

	/**
	 * @var int Quantity ordered
	 */
	public $quantity_expected = 0;

	/**
	 * @var int Quantity received
	 */
	public $quantity_received = 0;

	/**
	 * @var float This defines the price of the product, considering the number of units to buy.
	 * ($unit_price_te * $quantity), without discount, without tax
	 */
	public $price_te = 0;

	/**
	 * @var float Supplier discount rate for a given product
	 */
	public $discount_rate = 0;

	/**
	 * @var float Supplier discount value (($discount_rate / 100) * $price_te), without tax
	 */
	public $discount_value_te = 0;

	/**
	 * @var float ($price_te - $discount_value_te), with discount, without tax
	 */
	public $price_with_discount_te = 0;

	/**
	 * @var int Tax rate for the given product
	 */
	public $tax_rate = 0;

	/**
	 * @var float Tax value for the given product
	 */
	public $tax_value = 0;

	/**
	 * @var float ($price_with_discount_te + $tax_value)
	 */
	public $price_ti = 0;

	/**
	 * @var float Tax value of the given product after applying the global order discount (i.e. if SupplyOrder::discount_rate is set)
	 */
	public $tax_value_with_order_discount = 0;

	/**
	 * @var float This is like $price_with_discount_te, considering the global order discount.
	 * (i.e. if SupplyOrder::discount_rate is set)
	 */
	public $price_with_order_discount_te = 0;

	
	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'supply_order_detail',
		'primary' => 'id_supply_order_detail',
		'fields' => array(
			'id_supply_order' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedId', 'required' => true),
			'id_product' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedId', 'required' => true),
			'id_product_attribute' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedId', 'required' => true),
			'reference' => array('type' => 'FILL_ME', 'validate' => 'isReference'),
			'supplier_reference' => array('type' => 'FILL_ME', 'validate' => 'isReference'),
			'name' => array('type' => 'FILL_ME', 'validate' => 'isGenericName', 'required' => true),
			'ean13' => array('type' => 'FILL_ME', 'validate' => 'isEan13'),
			'upc' => array('type' => 'FILL_ME', 'validate' => 'isUpc'),
			'id_currency' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedId', 'required' => true),
			'exchange_rate' => array('type' => 'FILL_ME', 'validate' => 'isFloat', 'required' => true),
			'unit_price_te' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'quantity_expected' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedInt', 'required' => true),
			'quantity_received' => array('type' => 'FILL_ME', 'validate' => 'isUnsignedInt'),
			'price_te' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'discount_rate' => array('type' => 'FILL_ME', 'validate' => 'isFloat', 'required' => true),
			'discount_value_te' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'price_with_discount_te' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'tax_rate' => array('type' => 'FILL_ME', 'validate' => 'isFloat', 'required' => true),
			'tax_value' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'price_ti' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
			'tax_value_with_order_discount' => array('type' => 'FILL_ME', 'validate' => 'isFloat', 'required' => true),
			'price_with_order_discount_te' => array('type' => 'FILL_ME', 'validate' => 'isPrice', 'required' => true),
		),
	);


	/**
	 * @see ObjectModel::getFields()
	 */
	public function getFields()
	{
		$this->validateFields();

		$fields['id_supply_order'] = (int)$this->id_supply_order;
		$fields['id_product'] = (int)$this->id_product;
		$fields['id_product_attribute'] = (int)$this->id_product_attribute;
		$fields['reference'] = pSQL($this->reference);
		$fields['supplier_reference'] = pSQL($this->supplier_reference);
		$fields['name'] = pSQL($this->name);
		$fields['ean13'] = pSQL($this->ean13);
		$fields['upc'] = pSQL($this->upc);
		$fields['id_currency'] = (int)$this->id_currency;
		$fields['exchange_rate'] = (float)$this->exchange_rate;
		$fields['unit_price_te'] = (float)$this->unit_price_te;
		$fields['quantity_expected'] = (int)$this->quantity_expected;
		$fields['quantity_received'] = (int)$this->quantity_received;
		$fields['price_te'] = (float)$this->price_te;
		$fields['discount_rate'] = (float)$this->discount_rate;
		$fields['discount_value_te'] = (float)$this->discount_value_te;
		$fields['price_with_discount_te'] = (float)$this->price_with_discount_te;
		$fields['tax_rate'] = (float)$this->tax_rate;
		$fields['tax_value'] = (float)$this->tax_value;
		$fields['price_ti'] = (float)$this->price_ti;
		$fields['tax_value_with_order_discount'] = (float)$this->tax_value_with_order_discount;
		$fields['price_with_order_discount_te'] = (float)$this->price_with_order_discount_te;

		return $fields;
	}

	/**
	 * @see ObjectModel::update()
	 */
	public function update($null_values = false)
	{
		$this->calculatePrices();

		parent::update($null_values);
	}

	/**
	 * @see ObjectModel::add()
	 */
	public function add($autodate = true, $null_values = false)
	{
		$this->calculatePrices();

		parent::add($autodate, $null_values);
	}

	/**
	 * Determines all prices for this product based on its quantity and unit price
	 * Applies discount if necessary
	 * Calculates tax value in function of tax rate
	 *
	 * @return array
	 */
	protected function calculatePrices()
	{
		// calculates entry price
		$this->price_te = Tools::ps_round((float)$this->unit_price_te * (int)$this->quantity_expected, 6);

		// calculates entry discount value
		if ($this->discount_rate != null && is_float($this->discount_rate) && $this->discount_rate > 0)
			$this->discount_value_te = Tools::ps_round((float)$this->price_te * ($this->discount_rate / 100), 6);

		// calculates entry price with discount
		$this->price_with_discount_te = Tools::ps_round($this->price_te - $this->discount_value_te, 6);

		// calculates tax value
		$this->tax_value = Tools::ps_round($this->price_with_discount_te * ((float)$this->tax_rate / 100), 6);
		$this->price_ti = Tools::ps_round($this->price_with_discount_te + $this->tax_value, 6);

		// defines default values for order discount fields
		$this->tax_value_with_order_discount = Tools::ps_round($this->tax_value, 6);
		$this->price_with_order_discount_te = Tools::ps_round($this->price_with_discount_te, 6);
	}

	/**
	 * Applies a global order discount rate on the current product entity
	 *
	 * @param $discount_rate The discount rate in percent (Ex. 5 for 5 percents)
	 */
	public function applyGlobalDiscount($discount_rate)
	{
		if ($discount_rate != null && is_numeric($discount_rate) && (float)$discount_rate > 0)
		{
			// calculates new price, with global order discount, tax ecluded
			$discount_value = $this->price_with_discount_te - ($this->price_with_discount_te * ((float)$discount_rate / 100));

			$this->price_with_order_discount_te = Tools::ps_round($discount_value, 6);

			// calculates new tax value, with global order discount
			$this->tax_value_with_order_discount = Tools::ps_round($this->price_with_order_discount_te * ((float)$this->tax_rate / 100), 6);

			parent::update();
		}
	}

	/**
	 * @see ObjectModel::validateController()
	 */
	public function validateController($htmlentities = true)
	{
		$errors = array();

		/* required fields */
		$fields_required = $this->fieldsRequired;

		if (isset(self::$fieldsRequiredDatabase[get_class($this)]))
			$fields_required = array_merge(
				$this->fieldsRequired,
				self::$fieldsRequiredDatabase[get_class($this)]
			);

		foreach ($fields_required as $field)
			if (($value = $this->{$field}) == false && (string)$value != '0')
				if (!$this->id || $field != 'passwd')
					$errors[] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities)
								.'</b> '.Tools::displayError('is required.');

		/* Checks maximum fields sizes */
		foreach ($this->fieldsSize as $field => $max_length)
			if ($value = $this->{$field} && Tools::strlen($value) > $max_length)
				$errors[] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities)
							.'</b> '.Tools::displayError('is too long.').' ('.Tools::displayError('Maximum length:').' '.$max_length.')';

		/* Checks fields validity */
		foreach ($this->fieldsValidate as $field => $function)
			if ($value = $this->{$field})
				if (!Validate::$function($value) && (!empty($value) || in_array($field, $this->fieldsRequired)))
					$errors[] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities).'</b> '.Tools::displayError('is invalid.');
				else
					if ($field == 'passwd')
						if ($value = Tools::getValue($field))
							$this->{$field} = Tools::encrypt($value);
					else
						$this->{$field} = $value;

		if ($this->quantity_expected <= 0)
			$errors[] = '<b>'.self::displayFieldName('quantity_expected', get_class($this)).'</b> '.Tools::displayError('is invalid.');

		if ($this->tax_rate < 0 || $this->tax_rate > 100)
			$errors[] = '<b>'.self::displayFieldName('tax_rate', get_class($this)).'</b> '.Tools::displayError('is invalid.');

		if ($this->discount_rate < 0 || $this->discount_rate > 100)
			$errors[] = '<b>'.self::displayFieldName('discount_rate', get_class($this)).'</b> '.Tools::displayError('is invalid.');

		return $errors;
	}
}