Next support

Author: phpfui

README.md

@@ -28,7 +28,10 @@ $client->refreshToken();
 // $client is now ready to use
 $listEndPoint = new \PHPFUI\ConstantContact\V3\ContactLists($client);
 $lists = $listEndPoint->get();
-print_r($lists);
+do {
+  print_r($lists);
+  $lists = $listEndPoint->next();
+} while ($lists);
 ```
 
 ## Constant Contact Setup

src/ConstantContact/Base.php

@@ -23,7 +23,17 @@ public function getResponseText() : string
 		return $this->client->getBody();
 		}
 
-	protected function doDelete(array $parameters) : bool
+	/**
+	 * If the endpoint is paginated, you can call next() to retrieve the next set of data.  If no next is provided, an empty array is returned.
+	 *
+	 * @return array filled with next part of the response from the endpoint, or empty if no next.
+	 */
+	public function next() : array
+		{
+		return $this->client->next();
+		}
+
+	protected function doDelete(array $parameters) : array
 		{
 		$url = $this->getUrl($parameters);
 

src/ConstantContact/Client.php

@@ -22,6 +22,8 @@ class Client
 
   private array $validScopes = ['account_read', 'account_update', 'contact_data', 'campaign_data', ];
 
+	private string $next = '';
+
 	/**
 	 * Construct a client.
 	 *
@@ -40,6 +42,19 @@ public function getBody() : string
 		return $this->body;
 		}
 
+	public function next() : array
+		{
+		if (! $this->next)
+			{
+			return [];
+			}
+
+		$guzzle = new \GuzzleHttp\Client(['headers' => $this->getHeaders()]);
+		$response = $guzzle->request('GET', 'https://api.cc.email' . $this->next);
+
+		return $this->process($response);
+		}
+
 	public function setHost(string $host) : self
 		{
 		$this->host = $host;
@@ -256,6 +271,7 @@ private function process(\GuzzleHttp\Psr7\Response $response) : array
 		$this->statusCode = $response->getStatusCode();
 		$this->body = $response->getBody();
 		$data = \json_decode($this->body, true);
+		$this->next = $data['_links']['next']['href'] ?? '';
 
 		if (null !== $data)
 			{