feat: add support for subaccounts

Author: mychidarko

src/Paystack/Provider.php

@@ -66,6 +66,14 @@ public function transactions()
         return new Transactions($this->client);
     }
 
+    /**
+     * Return paystack subaccounts instance
+     */
+    public function subaccounts()
+    {
+        return new Subaccounts($this->client);
+    }
+
     /**
      * Return paystack accepted banks
      */

src/Paystack/Subaccount.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Leaf\Billing\Paystack;
+
+/**
+ * PayStack Subaccount
+ * ----
+ * API wrapper for PayStack Subaccount API
+ */
+class Subaccount
+{
+    protected $data;
+
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    public function toArray()
+    {
+        return $this->data;
+    }
+
+    public function __get($name)
+    {
+        return $this->data[$name] ?? null;
+    }
+
+    public function __set($name, $value)
+    {
+        $this->data[$name] = $value;
+    }
+
+    public function __unset($name)
+    {
+        unset($this->data[$name]);
+    }
+
+    public function __isset($name)
+    {
+        return isset($this->data[$name]);
+    }
+}

src/Paystack/Subaccounts.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace Leaf\Billing\Paystack;
+
+/**
+ * PayStack Subaccounts
+ * ----
+ * API wrapper for PayStack Subaccounts API
+ */
+class Subaccounts
+{
+    protected $client;
+
+    public function __construct($client)
+    {
+        $this->client = $client;
+    }
+
+    /**
+     * Create a new paystack subaccount
+     */
+    public function create(array $params): Subaccount
+    {
+        $response = $this->client->post('/subaccount', [
+            'body' => json_encode($params)
+        ]);
+
+        $subaccount = json_decode($response->getBody(), true);
+
+        return new Subaccount($subaccount['data']);
+    }
+
+    /**
+     * Get all paystack subaccounts
+     */
+    public function all(): array
+    {
+        $response = $this->client->get('/subaccount');
+
+        $subaccounts = json_decode($response->getBody(), true);
+
+        return array_map(function ($subaccount) {
+            return new Subaccount($subaccount);
+        }, $subaccounts['data']);
+    }
+
+    /**
+     * Get a paystack subaccount by id
+     */
+    public function get($id): Subaccount
+    {
+        $response = $this->client->get("/subaccount/$id");
+
+        $subaccount = json_decode($response->getBody(), true);
+
+        return new Subaccount($subaccount['data']);
+    }
+
+    /**
+     * Update a paystack subaccount
+     */
+    public function update($id, array $params): Subaccount
+    {
+        $response = $this->client->put("/subaccount/$id", [
+            'body' => json_encode($params)
+        ]);
+
+        $subaccount = json_decode($response->getBody(), true);
+
+        return new Subaccount($subaccount['data']);
+    }
+
+    public function toArray()
+    {
+        return array_map(function ($subaccount) {
+            return $subaccount->toArray();
+        }, $this->all());
+    }
+}