<?php
class ModelLocalisationTaxClass extends Model {

    public function addTaxClass($data) {
        $this->db->query("INSERT INTO " . DB_PREFIX . "tax_class SET title = '" . $this->db->escape($data['title']) . "', description = '" . $this->db->escape($data['description']) . "', date_added = NOW()");

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

        if (isset($data['tax_rule'])) {
            foreach ($data['tax_rule'] as $tax_rule) {
                $this->db->query("INSERT INTO " . DB_PREFIX . "tax_rule SET tax_class_id = '" . (int)$tax_class_id . "', tax_rate_id = '" . (int)$tax_rule['tax_rate_id'] . "', based = '" . $this->db->escape($tax_rule['based']) . "', priority = '" . (int)$tax_rule['priority'] . "'");
            }
        }

        $this->cache->delete('tax_class');

        return $tax_class_id;
    }

    public function editTaxClass($tax_class_id, $data) {
        $this->db->query("UPDATE " . DB_PREFIX . "tax_class SET title = '" . $this->db->escape($data['title']) . "', description = '" . $this->db->escape($data['description']) . "', date_modified = NOW() WHERE tax_class_id = '" . (int)$tax_class_id . "'");

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

        if (isset($data['tax_rule'])) {
            foreach ($data['tax_rule'] as $tax_rule) {
                $this->db->query("INSERT INTO " . DB_PREFIX . "tax_rule SET tax_class_id = '" . (int)$tax_class_id . "', tax_rate_id = '" . (int)$tax_rule['tax_rate_id'] . "', based = '" . $this->db->escape($tax_rule['based']) . "', priority = '" . (int)$tax_rule['priority'] . "'");
            }
        }

        $this->cache->delete('tax_class');
    }

    public function deleteTaxClass($tax_class_id) {
        $this->db->query("DELETE FROM " . DB_PREFIX . "tax_class WHERE tax_class_id = '" . (int)$tax_class_id . "'");
        $this->db->query("DELETE FROM " . DB_PREFIX . "tax_rule WHERE tax_class_id = '" . (int)$tax_class_id . "'");

        $this->cache->delete('tax_class');
    }

    public function getTaxClass($tax_class_id) {
        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "tax_class WHERE tax_class_id = '" . (int)$tax_class_id . "'");

        return $query->row;
    }

    public function getTaxClasses($data = array()) {
        if ($data) {
            $sql = "SELECT * FROM " . DB_PREFIX . "tax_class";

            $sql .= " ORDER BY title";

            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;
        } else {
            $tax_class_data = $this->cache->get('tax_class');

            if (!$tax_class_data) {
                $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "tax_class");

                $tax_class_data = $query->rows;

                $this->cache->set('tax_class', $tax_class_data);
            }

            return $tax_class_data;
        }
    }

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

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

    public function getTaxRules($tax_class_id) {
        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "tax_rule WHERE tax_class_id = '" . (int)$tax_class_id . "'");

        return $query->rows;
    }

    public function getTotalTaxRulesByTaxRateId($tax_rate_id) {
        $query = $this->db->query("SELECT COUNT(DISTINCT tax_class_id) AS total FROM " . DB_PREFIX . "tax_rule WHERE tax_rate_id = '" . (int)$tax_rate_id . "'");

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

}