Pulling shipping details from one wordpress plugin into another - php

Question

I believe I am close but entirely unsure as my limited php knowledge is based on trial and error. I am trying to pull data from a plugin that creates my shipping label into a plugin that tracks shipping. Specifically Elex EasyPost into Advanced Shipping Tracking.
I have an example snippet for shipstation integration from AST here:
<?php
add_action( 'woocommerce_shipstation_shipnotify', 'add_tracking_information_into_order', 10, 2 );
function add_tracking_information_into_order($order, $tracking_details){
$order_id = $order->get_id();
$args = array(
'tracking_provider' => $tracking_details['carrier'],
'tracking_number' => wc_clean( $tracking_details['tracking_number'] ),
'date_shipped' => wc_clean( $tracking_details['ship_date'] ),
'status_shipped' => 1,
);
$ast = new WC_Advanced_Shipment_Tracking_Actions;
$tracking_item = $ast->insert_tracking_item( $order_id, $args );
}
It should be similar but obviously I need to replace the hook and the items in the array. Here is what Elex sent me when asked for the hooks they are using.
get_post_meta($order_id, ‘wf_easypost_labels’);
Sample output:
array(
0=>(‘url’=>label_url,’tracking_number’=> (string)’tracking code’,’integrator_txn_id’=> ‘integerator_id’,’shipment_id’=>’package_shipment_id’,’order_date’=>order_date,’carrier’=>EX:USPS,”link”=>tracking_link,);//First package
1=>(‘url’=>label_url,’tracking_number’=> (string)’tracking code’,’integrator_txn_id’=> ‘integerator_id’,’shipment_id’=>’package_shipment_id’,’order_date’=>order_date,’carrier’=>EX:USPS,”link”=>tracking_link,);//Second package
)
So here is my attempt to use their array in my own snippet:
<?php
add_action( 'woocommerce_checkout_update_order_meta', 'add_tracking_information_into_order', 10, 2 );
function add_tracking_information_into_order($order, $myship_func){
$myship_func = get_post_meta($order_id, 'wf_easypost_labels');
$order_id = $order->get_id();
$args = array(
'tracking_provider' => $myship_func['carrier'],
'tracking_number' => wc_clean($myship_func['tracking code']),
'date_shipped' => wc_clean($myship_func['order_date']),
'status_shipped' => 1,
);
$ast = new WC_Advanced_Shipment_Tracking_Actions;
$tracking_item = $ast->insert_tracking_item( $order_id, $args );
}
When the order is initially filled and the label is generated Elex grabs all the data from and sticks it in the meta. I need to pull that meta either at the time of generation or post generation and stick it in the AST fields.
My main question is thus - Am I on the right track here? Do I just need to figure out the correct hook or is my method for accessing the Elex array incorrect? Again, I usually compare codes, slice and dice, and get things to "look right" and then they work (or not). I myself don't have too deep of knowledge about arrays or class functions (which I believe the Elex one is).
In this case the code is silently failing so I suspect it is the hook involved or a combination of the hook and my code.