added methods for split payment

Author: sayopaul

README.md

@@ -126,6 +126,12 @@ Route::post('/pay', [
 ]);
 
 Route::get('/payment/callback', 'PaymentController@handleGatewayCallback');
+
+OR
+
+Route::get('payment/callback', [
+    'uses' => 'PaymentController@handleGatewayCallback'
+]); //Laravel 5.0
 ```
 
 ```php
@@ -208,6 +214,32 @@ Paystack::getAllTransactions();
  * @returns string
  */
 Paystack::genTranxRef();
+
+/**
+* This method creates a subaccount to be used for split payments 
+* @return array
+*/
+Paystack::createSubAccount();
+
+
+/**
+* This method fetches the details of a subaccount  
+* @return array
+*/
+Paystack::fetchSubAccount();
+
+
+/**
+* This method lists the subaccounts associated with your paystack account 
+* @return array
+*/
+Paystack::listSubAccounts();
+
+/**
+* This method Updates a subaccount to be used for split payments 
+* @return array
+*/
+Paystack::updateSubAccount();
 ```
 
 A sample form will look like so:

src/Paystack.php

@@ -100,38 +100,43 @@ private function setRequestOptions()
         );
     }
 
-    /**
-     * Initiate a payment request to Paystack
+   
+     /**
+     * Included the option to pass the payload to this method for situations 
+     * when the payload is built on the fly (not passed to the controller from a view)
      * @return Paystack
      */
-    public function makePaymentRequest()
-    {
-        $data = [
-            "amount" => intval(request()->amount),
-            "reference" => request()->reference,
-            "email" => request()->email,
-            "plan" => request()->plan,
-            "first_name" => request()->first_name,
-            "last_name" => request()->last_name,
-            "callback_url" => request()->callback_url,
-            /*
-            * to allow use of metadata on Paystack dashboard and a means to return additional data back to redirect url
-            * form need an input field: <input type="hidden" name="metadata" value="{{ json_encode($array) }}" >
-            *array must be set up as: $array = [ 'custom_fields' => [
-            *                                                            ['display_name' => "Cart Id", "variable_name" => "cart_id", "value" => "2"],
-            *                                                            ['display_name' => "Sex", "variable_name" => "sex", "value" => "female"],
-            *                                                            .
-            *                                                            .
-            *                                                            .
-            *                                                        ]
-            *                                        
-            *                                  ]
-            */
-            'metadata' => request()->metadata 
-        ];
 
-        // Remove the fields which were not sent (value would be null)
-        array_filter($data);
+    public function makePaymentRequest( $data = null)
+    {
+        if ( $data == null ) {
+            $data = [
+                "amount" => intval(request()->amount),
+                "reference" => request()->reference,
+                "email" => request()->email,
+                "plan" => request()->plan,
+                "first_name" => request()->first_name,
+                "last_name" => request()->last_name,
+                "callback_url" => request()->callback_url,
+                /*
+                * to allow use of metadata on Paystack dashboard and a means to return additional data back to redirect url
+                * form need an input field: <input type="hidden" name="metadata" value="{{ json_encode($array) }}" >
+                *array must be set up as: $array = [ 'custom_fields' => [
+                *                                                            ['display_name' => "Cart Id", "variable_name" => "cart_id", "value" => "2"],
+                *                                                            ['display_name' => "Sex", "variable_name" => "sex", "value" => "female"],
+                *                                                            .
+                *                                                            .
+                *                                                            .
+                *                                                        ]
+                *                                        
+                *                                  ]
+                */
+                'metadata' => request()->metadata
+            ];
+
+            // Remove the fields which were not sent (value would be null)
+            array_filter($data);
+        }
 
         $this->setHttpResponse('/transaction/initialize', 'POST', $data);
 
@@ -172,6 +177,21 @@ public function getAuthorizationUrl()
 
         return $this;
     }
+    
+     /**
+     * Get the authorization callback response
+     * In situations where Laravel serves as an backend for a detached UI, the api cannot redirect 
+     * and might need to take different actions based on the success or not of the transaction
+     * @return array
+     */
+    public function getAuthorizationResponse($data)
+    {
+        $this->makePaymentRequest($data);
+
+        $this->url = $this->getResponse()['data']['authorization_url'];
+
+        return $this->getResponse();
+    }
 
     /**
      * Hit Paystack Gateway to Verify that the transaction is valid
@@ -370,6 +390,7 @@ public function createCustomer()
 
         $this->setRequestOptions();
         $this->setHttpResponse('/customer', 'POST', $data);
+        return $this->setHttpResponse('/customer', 'POST', $data)->getResponse();
     }
 
     /**
@@ -434,6 +455,44 @@ public function createSubscription()
         $this->setHttpResponse('/subscription', 'POST', $data);
     }
 
+    /**
+     * Get all the subscriptions made on Paystack.
+     *
+     * @return array
+     */
+    public function getAllSubscriptions()
+    {
+        $this->setRequestOptions();
+
+        return $this->setHttpResponse("/subscription", 'GET', [])->getData();
+    }
+
+    /**
+     * Get customer subscriptions
+     *
+     * @param integer $customer_id
+     * @return array
+     */
+    public function getCustomerSubscriptions($customer_id)
+    {
+        $this->setRequestOptions();
+
+        return $this->setHttpResponse('/subscription?customer=' . $customer_id, 'GET', [])->getData();
+    }
+
+    /**
+     * Get plan subscriptions
+     *
+     * @param  integer $plan_id
+     * @return array
+     */
+    public function getPlanSubscriptions($plan_id)
+    {
+        $this->setRequestOptions();
+
+        return $this->setHttpResponse('/subscription?plan=' . $plan_id, 'GET', [])->getData();
+    }
+
     /**
      * Enable a subscription using the subscription code and token
      * @return array