<?php

namespace App\Service;

class InventoryManager 
{
    protected $api_url;
    protected $api_ocp_key;
    protected $api_auth_prefix;
    protected $api_auth_token;

    public function __construct($api_url, $api_ocp_key, $api_auth_prefix, $api_auth_token)
    {
        $this->api_url = $api_url;
        $this->api_ocp_key = $api_ocp_key;
        $this->api_auth_prefix = $api_auth_prefix;
        $this->api_auth_token = $api_auth_token;
    }

    public function getBranchesInventory($nearest_branch_codes, $skus)
    {
        // api call to check inventory
        // pass the list of branch codes and the skus
        $data = [
            "BranchCodes" => $nearest_branch_codes,
            "Skus" => $skus,
        ];

        $json_data = json_encode($data);
        // error_log('JSON ' . $json_data); 

        // initializes a new cURL session
        $curl = curl_init($this->api_url);

        // Set the CURLOPT_RETURNTRANSFER option to true
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

        // Set the CURLOPT_POST option to true for POST request
        curl_setopt($curl, CURLOPT_POST, true);

        // Set the request data as JSON using json_encode function
        curl_setopt($curl, CURLOPT_POSTFIELDS,  $json_data);

        // set timeout
        curl_setopt($curl, CURLOPT_TIMEOUT, 300);

        $authorization = $this->api_auth_prefix . ' ' . $this->api_auth_token;
        $ocp = $this->api_ocp_key;

        curl_setopt($curl, CURLOPT_HTTPHEADER, [
            'Authorization: ' . $authorization,
            'Content-Type: application/json',
            'Ocp-Apim-Subscription-Key: ' . $ocp,
        ]);

        $response = curl_exec($curl);

        // close cURL session
        curl_close($curl);

        // response is array of these
        // {
        //     "Id": 37,
        //     "BranchCode": "WestAve",
        //     "BranchName": "West ave. Branch",
        //     "BranchRole": 0,
        //     "Name": "3SMF / GOLD ",
        //     "SapCode": "WMGD31EL-CPNM0-L",
        //     "Quantity": 38
        // }
        
        // check if the response is empty
        $results = [];
        if (!empty($response))
            $results = json_decode($response, true);

        return $results;
    }

}