<?php
class ModelCatalogAttribute extends Model {

    public function addAttribute($data) {
        $this->db->query("INSERT INTO " . DB_PREFIX . "attribute SET attribute_group_id = '" . (int)$data['attribute_group_id'] . "', sort_order = '" . (int)$data['sort_order'] . "'");

        $attribute_id = $this->db->getLastId();

        foreach ($data['attribute_description'] as $language_id => $value) {
            $this->db->query("INSERT INTO " . DB_PREFIX . "attribute_description SET attribute_id = '" . (int)$attribute_id . "', language_id = '" . (int)$language_id . "', name = '" . $this->db->escape($value['name']) . "'");
        }

        return $attribute_id;
    }

    public function editAttribute($attribute_id, $data) {
        $this->db->query("UPDATE " . DB_PREFIX . "attribute SET attribute_group_id = '" . (int)$data['attribute_group_id'] . "', sort_order = '" . (int)$data['sort_order'] . "' WHERE attribute_id = '" . (int)$attribute_id . "'");

        $this->db->query("DELETE FROM " . DB_PREFIX . "attribute_description WHERE attribute_id = '" . (int)$attribute_id . "'");

        foreach ($data['attribute_description'] as $language_id => $value) {
            $this->db->query("INSERT INTO " . DB_PREFIX . "attribute_description SET attribute_id = '" . (int)$attribute_id . "', language_id = '" . (int)$language_id . "', name = '" . $this->db->escape($value['name']) . "'");
        }
    }

    public function deleteAttribute($attribute_id) {
        $this->db->query("DELETE FROM " . DB_PREFIX . "attribute WHERE attribute_id = '" . (int)$attribute_id . "'");
        $this->db->query("DELETE FROM " . DB_PREFIX . "attribute_description WHERE attribute_id = '" . (int)$attribute_id . "'");
    }

    public function getAttribute($attribute_id) {
        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "attribute a LEFT JOIN " . DB_PREFIX . "attribute_description ad ON (a.attribute_id = ad.attribute_id) WHERE a.attribute_id = '" . (int)$attribute_id . "' AND ad.language_id = '" . (int)$this->config->get('config_language_id') . "'");

        return $query->row;
    }

    public function getAttributes($data = array()) {
        $sql = "SELECT *, (SELECT agd.name FROM " . DB_PREFIX . "attribute_group_description agd WHERE agd.attribute_group_id = a.attribute_group_id AND agd.language_id = '" . (int)$this->config->get('config_language_id') . "') AS attribute_group FROM " . DB_PREFIX . "attribute a LEFT JOIN " . DB_PREFIX . "attribute_description ad ON (a.attribute_id = ad.attribute_id) WHERE ad.language_id = '" . (int)$this->config->get('config_language_id') . "'";

        if (!empty($data['filter_name'])) {
            $sql .= " AND ad.name LIKE '" . $this->db->escape($data['filter_name']) . "%'";
        }

        if (!empty($data['filter_attribute_group_id'])) {
            $sql .= " AND a.attribute_group_id = '" . $this->db->escape($data['filter_attribute_group_id']) . "'";
        }

        $sort_data = array(
            'ad.name',
            'attribute_group',
            'a.sort_order'
        );

        if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
            $sql .= " ORDER BY " . $data['sort'];
        } else {
            $sql .= " ORDER BY attribute_group, ad.name";
        }

        if (isset($data['order']) && ($data['order'] == 'DESC')) {
            $sql .= " DESC";
        } else {
            $sql .= " ASC";
        }

        if (isset($data['start']) || isset($data['limit'])) {
            if ($data['start'] < 0) {
                $data['start'] = 0;
            }

            if ($data['limit'] < 1) {
                $data['limit'] = 20;
            }

            $sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
        }

        $query = $this->db->query($sql);

        return $query->rows;
    }

    public function getAttributeDescriptions($attribute_id) {
        $attribute_data = array();

        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "attribute_description WHERE attribute_id = '" . (int)$attribute_id . "'");

        foreach ($query->rows as $result) {
            $attribute_data[$result['language_id']] = array( 'name' => $result['name'] );
        }

        return $attribute_data;
    }

    public function getTotalAttributes() {
        $query = $this->db->query("SELECT COUNT(*) AS total FROM " . DB_PREFIX . "attribute");

        return $query->row['total'];
    }

    public function getTotalAttributesByAttributeGroupId($attribute_group_id) {
        $query = $this->db->query("SELECT COUNT(*) AS total FROM " . DB_PREFIX . "attribute WHERE attribute_group_id = '" . (int)$attribute_group_id . "'");

        return $query->row['total'];
    }

}