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<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**
 * Supplier class
 *
 * @link    github.com/jekkos/opensourcepos
 * @since   1.0
 * @author  N/A
 */

class Supplier extends Person
{   
    /*
    Determines if a given person_id is a customer
    */
    public function exists($person_id)
    {
        $this->db->from('suppliers');   
        $this->db->join('people', 'people.person_id = suppliers.person_id');
        $this->db->where('suppliers.person_id', $person_id);
        
        return ($this->db->get()->num_rows() == 1);
    }

    /*
    Gets total of rows
    */
    public function get_total_rows()
    {
        $this->db->from('suppliers');
        $this->db->where('deleted', 0);

        return $this->db->count_all_results();
    }
    
    /*
    Returns all the suppliers
    */
    public function get_all($limit_from = 0, $rows = 0)
    {
        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');            
        $this->db->where('deleted', 0);
        $this->db->order_by('company_name', 'asc');
        if($rows > 0)
        {
            $this->db->limit($rows, $limit_from);
        }

        return $this->db->get();        
    }
    
    /*
    Gets information about a particular supplier
    */
    public function get_info($supplier_id)
    {
        $this->db->from('suppliers');   
        $this->db->join('people', 'people.person_id = suppliers.person_id');
        $this->db->where('suppliers.person_id', $supplier_id);
        $query = $this->db->get();
        
        if($query->num_rows() == 1)
        {
            return $query->row();
        }
        else
        {
            //Get empty base parent object, as $supplier_id is NOT an supplier
            $person_obj = parent::get_info(-1);
            
            //Get all the fields from supplier table        
            //append those fields to base parent object, we we have a complete empty object
            foreach($this->db->list_fields('suppliers') as $field)
            {
                $person_obj->$field = '';
            }
            
            return $person_obj;
        }
    }
    
    /*
    Gets information about multiple suppliers
    */
    public function get_multiple_info($suppliers_ids)
    {
        $this->db->from('suppliers');
        $this->db->join('people', 'people.person_id = suppliers.person_id');        
        $this->db->where_in('suppliers.person_id', $suppliers_ids);
        $this->db->order_by('last_name', 'asc');

        return $this->db->get();
    }
    
    /*
    Inserts or updates a suppliers
    */
    public function save_supplier(&$person_data, &$supplier_data, $supplier_id = FALSE)
    {
        $success = FALSE;

        //Run these queries as a transaction, we want to make sure we do all or nothing
        $this->db->trans_start();
        
        if(parent::save($person_data,$supplier_id))
        {
            if(!$supplier_id || !$this->exists($supplier_id))
            {
                $supplier_data['person_id'] = $person_data['person_id'];
                $success = $this->db->insert('suppliers', $supplier_data);
            }
            else
            {
                $this->db->where('person_id', $supplier_id);
                $success = $this->db->update('suppliers', $supplier_data);
            }
        }
        
        $this->db->trans_complete();
        
        $success &= $this->db->trans_status();

        return $success;
    }
    
    /*
    Deletes one supplier
    */
    public function delete($supplier_id)
    {
        $this->db->where('person_id', $supplier_id);

        return $this->db->update('suppliers', array('deleted' => 1));
    }
    
    /*
    Deletes a list of suppliers
    */
    public function delete_list($supplier_ids)
    {
        $this->db->where_in('person_id', $supplier_ids);

        return $this->db->update('suppliers', array('deleted' => 1));
    }
    
    /*
    Get search suggestions to find suppliers
    */
    public function get_search_suggestions($search, $unique = FALSE, $limit = 25)
    {
        $suggestions = array();

        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');
        $this->db->where('deleted', 0);
        $this->db->like('company_name', $search);
        $this->db->order_by('company_name', 'asc');
        foreach($this->db->get()->result() as $row)
        {
            $suggestions[] = array('value' => $row->person_id, 'label' => $row->company_name);
        }

        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');
        $this->db->where('deleted', 0);
        $this->db->distinct();
        $this->db->like('agency_name', $search);
        $this->db->where('agency_name IS NOT NULL');
        $this->db->order_by('agency_name', 'asc');
        foreach($this->db->get()->result() as $row)
        {
            $suggestions[] = array('value' => $row->person_id, 'label' => $row->agency_name);
        }

        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');
        $this->db->group_start();
            $this->db->like('first_name', $search);
            $this->db->or_like('last_name', $search); 
            $this->db->or_like('CONCAT(first_name, " ", last_name)', $search);
        $this->db->group_end();
        $this->db->where('deleted', 0);
        $this->db->order_by('last_name', 'asc');
        foreach($this->db->get()->result() as $row)
        {
            $suggestions[] = array('value' => $row->person_id, 'label' => $row->first_name . ' ' . $row->last_name);
        }

        if(!$unique)
        {
            $this->db->from('suppliers');
            $this->db->join('people', 'suppliers.person_id = people.person_id');
            $this->db->where('deleted', 0);
            $this->db->like('email', $search);
            $this->db->order_by('email', 'asc');
            foreach($this->db->get()->result() as $row)
            {
                $suggestions[] = array('value' => $row->person_id, 'label' => $row->email);
            }

            $this->db->from('suppliers');
            $this->db->join('people', 'suppliers.person_id = people.person_id');
            $this->db->where('deleted', 0);
            $this->db->like('phone_number', $search);
            $this->db->order_by('phone_number', 'asc');
            foreach($this->db->get()->result() as $row)
            {
                $suggestions[] = array('value' => $row->person_id, 'label' => $row->phone_number);
            }

            $this->db->from('suppliers');
            $this->db->join('people', 'suppliers.person_id = people.person_id');
            $this->db->where('deleted', 0);
            $this->db->like('account_number', $search);
            $this->db->order_by('account_number', 'asc');
            foreach($this->db->get()->result() as $row)
            {
                $suggestions[] = array('value' => $row->person_id, 'label' => $row->account_number);
            }
        }

        //only return $limit suggestions
        if(count($suggestions > $limit))
        {
            $suggestions = array_slice($suggestions, 0, $limit);
        }

        return $suggestions;
    }

    /*
    Gets rows
    */
    public function get_found_rows($search)
    {
        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');
        $this->db->group_start();
            $this->db->like('first_name', $search);
            $this->db->or_like('last_name', $search);
            $this->db->or_like('company_name', $search);
            $this->db->or_like('agency_name', $search);
            $this->db->or_like('email', $search);
            $this->db->or_like('phone_number', $search);
            $this->db->or_like('account_number', $search);
            $this->db->or_like('CONCAT(first_name, " ", last_name)', $search);
        $this->db->group_end();
        $this->db->where('deleted', 0);

        return $this->db->get()->num_rows();
    }
    
    /*
    Perform a search on suppliers
    */
    public function search($search, $rows = 0, $limit_from = 0, $sort = 'last_name', $order = 'asc')
    {
        $this->db->from('suppliers');
        $this->db->join('people', 'suppliers.person_id = people.person_id');
        $this->db->group_start();
            $this->db->like('first_name', $search);
            $this->db->or_like('last_name', $search);
            $this->db->or_like('company_name', $search);
            $this->db->or_like('agency_name', $search);
            $this->db->or_like('email', $search);
            $this->db->or_like('phone_number', $search);
            $this->db->or_like('account_number', $search);
            $this->db->or_like('CONCAT(first_name, " ", last_name)', $search);
        $this->db->group_end();
        $this->db->where('deleted', 0);
        
        $this->db->order_by($sort, $order);

        if($rows > 0)
        {
            $this->db->limit($rows, $limit_from);
        }

        return $this->db->get();
    }
}
?>