<?php

function get_customer_details($customer_id, $to=null)
{
	
	if ($to == null)
		$todate = date("Y-m-d");
	else	
		$todate = date2sql($to);
	$past1 = get_company_pref('past_due_days');
	$past2 = 2 * $past1;
	// removed - debtor_trans.alloc from all summations
	
    $sql = "SELECT ".TB_PREF."debtors_master.name, ".TB_PREF."debtors_master.curr_code, ".TB_PREF."payment_terms.terms,
		".TB_PREF."debtors_master.credit_limit, ".TB_PREF."credit_status.dissallow_invoices, ".TB_PREF."credit_status.reason_description,

		Sum(".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount) AS Balance,

		Sum(IF (".TB_PREF."payment_terms.days_before_due > 0,
			CASE WHEN (TO_DAYS('$todate') - TO_DAYS(".TB_PREF."debtor_trans.tran_date)) >= ".TB_PREF."payment_terms.days_before_due 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount
			ELSE 0 END,

			CASE WHEN TO_DAYS('$todate') - TO_DAYS(DATE_ADD(DATE_ADD(".TB_PREF."debtor_trans.tran_date,
				INTERVAL 1 MONTH), INTERVAL (".TB_PREF."payment_terms.day_in_following_month -
				DAYOFMONTH(".TB_PREF."debtor_trans.tran_date)) DAY)) >= 0 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount 
			ELSE 
				0 
			END

		)) AS Due,

		Sum(IF (".TB_PREF."payment_terms.days_before_due > 0,
			CASE WHEN TO_DAYS('$todate') - TO_DAYS(".TB_PREF."debtor_trans.tran_date) > ".TB_PREF."payment_terms.days_before_due
				AND TO_DAYS('$todate') - TO_DAYS(".TB_PREF."debtor_trans.tran_date) >= (".TB_PREF."payment_terms.days_before_due + $past1) 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount 
			ELSE 
				0 
			END,

			CASE WHEN (TO_DAYS('$todate') - TO_DAYS(DATE_ADD(DATE_ADD(".TB_PREF."debtor_trans.tran_date,
				INTERVAL 1  MONTH), INTERVAL (".TB_PREF."payment_terms.day_in_following_month -
				DAYOFMONTH(".TB_PREF."debtor_trans.tran_date)) DAY)) >= $past1) 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount
			ELSE 
				0 
			END

		)) AS Overdue1,

		Sum(IF (".TB_PREF."payment_terms.days_before_due > 0,
			CASE WHEN TO_DAYS('$todate') - TO_DAYS(".TB_PREF."debtor_trans.tran_date) > ".TB_PREF."payment_terms.days_before_due
				AND TO_DAYS('$todate') - TO_DAYS(".TB_PREF."debtor_trans.tran_date) >= (".TB_PREF."payment_terms.days_before_due + $past2) 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount 
			ELSE 
				0 
			END,

			CASE WHEN (TO_DAYS('$todate') - TO_DAYS(DATE_ADD(DATE_ADD(".TB_PREF."debtor_trans.tran_date,
				INTERVAL 1  MONTH), INTERVAL (".TB_PREF."payment_terms.day_in_following_month - 
				DAYOFMONTH(".TB_PREF."debtor_trans.tran_date)) DAY)) >= $past2) 
			THEN 
				".TB_PREF."debtor_trans.ov_amount + ".TB_PREF."debtor_trans.ov_gst + ".TB_PREF."debtor_trans.ov_freight + ".TB_PREF."debtor_trans.ov_discount
			ELSE 
				0 
			END

		)) AS Overdue2

		FROM ".TB_PREF."debtors_master,
			 ".TB_PREF."payment_terms,
			 ".TB_PREF."credit_status,
			 ".TB_PREF."debtor_trans

		WHERE
			 ".TB_PREF."debtors_master.payment_terms = ".TB_PREF."payment_terms.terms_indicator
			 AND ".TB_PREF."debtors_master.credit_status = ".TB_PREF."credit_status.id
			 AND ".TB_PREF."debtors_master.debtor_no = $customer_id
			 AND ".TB_PREF."debtor_trans.tran_date <= '$todate'
			 AND ".TB_PREF."debtors_master.debtor_no = ".TB_PREF."debtor_trans.debtor_no

		GROUP BY
			  ".TB_PREF."debtors_master.name,
			  ".TB_PREF."payment_terms.terms,
			  ".TB_PREF."payment_terms.days_before_due,
			  ".TB_PREF."payment_terms.day_in_following_month,
			  ".TB_PREF."debtors_master.credit_limit,
			  ".TB_PREF."credit_status.dissallow_invoices,
			  ".TB_PREF."credit_status.reason_description";
    
    $result = db_query($sql,"The customer details could not be retrieved");
    
    if (db_num_rows($result) == 0)
    {
    
    	/*Because there is no balance - so just retrieve the header information about the customer - the choice is do one query to get the balance and transactions for those customers who have a balance and two queries for those who don't have a balance OR always do two queries - I opted for the former */
    
    	$nil_balance = true;
    
    	$sql = "SELECT ".TB_PREF."debtors_master.name, ".TB_PREF."debtors_master.curr_code, ".TB_PREF."debtors_master.debtor_no,  ".TB_PREF."payment_terms.terms,
    		".TB_PREF."debtors_master.credit_limit, ".TB_PREF."credit_status.dissallow_invoices, ".TB_PREF."credit_status.reason_description
    		FROM ".TB_PREF."debtors_master,
    		     ".TB_PREF."payment_terms,
    		     ".TB_PREF."credit_status
    
    		WHERE
    		     ".TB_PREF."debtors_master.payment_terms = ".TB_PREF."payment_terms.terms_indicator
    		     AND ".TB_PREF."debtors_master.credit_status = ".TB_PREF."credit_status.id
    		     AND ".TB_PREF."debtors_master.debtor_no = '$customer_id'";
    	     
    	$result = db_query($sql,"The customer details could not be retrieved");
    
    } 
    else 
    {
    	$nil_balance = false;
    }
    
    $customer_record = db_fetch($result);
    
    if ($nil_balance == true)
    {
    	$customer_record["Balance"] = 0;
    	$customer_record["Due"] = 0;
    	$customer_record["Overdue1"] = 0;
    	$customer_record["Overdue2"] = 0;
    }    
    
    return $customer_record;
	
}

function get_customer_name($customer_id)
{
	$sql = "SELECT name FROM ".TB_PREF."debtors_master WHERE debtor_no=$customer_id";
	
	$result = db_query($sql, "could not get customer");
	
	$row = db_fetch_row($result);
	
	return $row[0];
}

function get_area_name($id)
{
	$sql = "SELECT description FROM ".TB_PREF."areas WHERE area_code=$id";
	
	$result = db_query($sql, "could not get sales type");
	
	$row = db_fetch_row($result);
	return $row[0];
}

function get_salesman_name($id)
{
	$sql = "SELECT salesman_name FROM ".TB_PREF."salesman WHERE salesman_code=$id";
	
	$result = db_query($sql, "could not get sales type");
	
	$row = db_fetch_row($result);
	return $row[0];
}


?>