Shopify: BespokeApp Shipping Script - different shipping rates for wholesale accounts

Shopify - BespokeApp Shipping Script - different shipping rates for wholesale accounts

/* This macro will be parsed as PHP code (see http://www.php.net)

The calculateshipping function is called every time a shipping calculation request is made by Shopify.

The function must return an array of available shipping options, otherwise no shipping options will be returned to your customers.
*/
function calculateshipping($DATA) {

	/* do not edit above this line */

	/*
	NB: only select php functions are allowed. Use of anything else will return a syntax error when you try to save. Consult the user guide at http://www.parcelintelligence.com.au/cs/documentation/user_guide.pdf for more information
	*/

	//this holds the rates that will be returned to your customer
	$_RATES = array();
	
	$DATA = enrichCartDetails($DATA);

	$wholesaleTags = array('Wholesale'); //list of customer tags considered wholesale, case sensitive

	$isWholesale = false;
	
	$cartTotal = 0;
	
		foreach ($DATA['items'] as $item) {
		    $cartTotal += $item['quantity']*$item['price'];
		}
		

	if (isset($DATA['cart']['customer']['tags'])) {
		foreach ($wholesaleTags as $tag) {
			if (in_array($tag,$DATA['cart']['customer']['tags'])) {
				$isWholesale = true;
			}
		}
	}
    
 
	if ($isWholesale) {
    	if ($cartTotal >= 50000 && $cartTotal <= 99900 ) {
            $_RATES[] = array(
    			"service_name" => 'Wholesale Shipping',
    			"service_code" => 'Wholesale Shipping',
    			"total_price" => 2000,
    			"currency" => "USD",
    		);
        }
        if ($cartTotal >= 100000 && $cartTotal <= 499900 ) {
    	    $_RATES[] = array(
    			"service_name" => 'Wholesale Shipping',
    			"service_code" => 'Wholesale Shipping',
    			"total_price" => 4000,
    			"currency" => "USD",
    		);
    	    
    	}
    	if ($cartTotal >= 500000 && $cartTotal <= 999900 ) {
    	    $_RATES[] = array(
    			"service_name" => 'Wholesale Shipping',
    			"service_code" => 'Wholesale Shipping',
    			"total_price" => 6000,
    			"currency" => "USD",
    		);
    	}  
    	
        if ($cartTotal >= 1000000){
                $_RATES[] = array(
        			"service_name" => 'Wholesale free Shipping',
        			"service_code" => 'Wholesale Free Shipping',
        			"total_price" => 0,
        			"currency" => "USD",
        		);
        }
    	
	}
	if(!$isWholesale){
	
        $totalWeightInKG = 0; //in KG
        $totalWeightInLB = 0; //in LB
        foreach ($DATA['items'] as $item) {
        $totalWeightInKG += $item['quantity']*$item['grams']/1000;
        $totalWeightInLB += $item['quantity']*round($item['grams']/1000*2.20462,2);
        }
        
        if ($totalWeightInLB <= 2.0 && $cartTotal <= 8000) {
            $_RATES[] = array(
    			"service_name" => 'Standard Shipping',
    			"service_code" => 'Standard Shipping',
    			"total_price" => 1000,
    			"currency" => "USD",
    		);
        } 
        if ($totalWeightInLB >= 2.1 && $cartTotal <= 8000 ) {
            $_RATES[] = array(
    			"service_name" => 'Heavy Goods Shipping',
    			"service_code" => 'Heavy Goods Shipping',
    			"total_price" => 2000,
    			"currency" => "USD",
    		);
        }
        
        if ($cartTotal >= 8000){
            $_RATES[] = array(
            	"service_name" => 'Free Standard Shipping',
            	"service_code" => 'Free Standard Shipping',
            	"total_price" => 0,
            	"currency" => "USD",
            );
        }
    } 

	/*
	this is what $DATA looks like, you can use any of the info in $DATA to generate your shipping rate
	Array
	(
		[origin] => Array
			(
				[country] => AU
				[postal_code] => 3000
				[province] => VIC
				[city] => melbourne
				[name] =>
				[address1] => 1 main street
				[address2] =>
				[address3] =>
				[phone] =>
				[fax] =>
				[address_type] =>
				[company_name] =>
			)

		[destination] => Array
			(
				[country] => AU
				[postal_code] => 2000
				[province] => NSW
				[city] =>
				[name] =>
				[address1] =>
				[address2] =>
				[address3] =>
				[phone] =>
				[fax] =>
				[address_type] =>
				[company_name] =>
			)

		[items] => Array
			(
				[0] => Array
					(
						[name] => product10
						[sku] => SKUP00310
						[quantity] => 1
						[grams] => 1000
						[price] => 300
						[vendor] => PRODUCT
						[requires_shipping] => 1
						[taxable] => 1
						[fulfillment_service] => manual
						[product_id] => 128436738
						[variant_id] => 290813760
					)

				[1] => Array
					(
						[name] => product11
						[sku] => SKUP0011
						[quantity] => 1
						[grams] => 1100
						[price] => 300
						[vendor] => PRODUCT
						[requires_shipping] => 1
						[taxable] => 1
						[fulfillment_service] => manual
						[product_id] => 128436744
						[variant_id] => 290813772
					)

			)

		[currency] => AUD
	)

	//this is how you insert a rate
	$_RATES[] = array(
		"service_name" => "Standard Shipping", //this is what the customer will see
		"service_code" => "STANDARD_SHIPPING", //can be anything you like
		"total_price" => 10000, //in cents
		"currency" => "AUD",
	);
	*/
	
	
	
	

	return $_RATES;

	/* do not edit below this line */

}

shipping options
$20 $500 - $999
$40 $1,000 - $4,999
$60. $5,000 - $9,999
FREE $10,000+

Task:
For our retail customers we currently offer free shipping on orders over $80. We need to have different shipping rates for wholesale accounts. Ideally they are tiered (ie. $10 for orders under $500, $20 for orders between $500-1,000, etc.). Let me know if we need to hop on a call to discuss.