From fc0df4d795713d995a953ae14f3e391700a2a6a8 Mon Sep 17 00:00:00 2001
From: Joris Berthelot <admin+github@eexit.net>
Date: Fri, 28 Oct 2022 11:51:19 +0200
Subject: [PATCH] Add ability to set the Intercom API region by injecting the
 base URI

---
 README.md                    | 15 +++++++++++++++
 src/IntercomClient.php       | 29 ++++++++++++++++++++++-------
 tests/IntercomClientTest.php | 22 ++++++++++++++++++++++
 3 files changed, 59 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index 3fd8ad3..20cb462 100644
--- a/README.md
+++ b/README.md
@@ -98,6 +98,21 @@ For more information about API Versioning, please check the [API Versioning Docu
 
 **Important**: Not all the resources supported by this API are supported by all API versions. See the notes below or the [API Reference](https://developers.intercom.com/intercom-api-reference/reference) for more information about the resources supported by each API version.
 
+## Regional Endpoint
+
+This SDK allows to work in a different region than the US. Intercom provides [different endpoints](https://developers.intercom.com/building-apps/docs/rest-apis#available-endpoints).
+
+```php
+use Intercom\IntercomClient;
+
+$client = new IntercomClient(
+    '<insert_token_here>',
+    null,
+    [],
+    IntercomClient::BASE_URI_EU
+);
+```
+
 ## Contacts
 
 This resource is only available in API Versions 2.0 and above
diff --git a/src/IntercomClient.php b/src/IntercomClient.php
index 076f9ed..0401cb0 100644
--- a/src/IntercomClient.php
+++ b/src/IntercomClient.php
@@ -23,6 +23,15 @@ class IntercomClient
 {
     const SDK_VERSION = '4.4.0';
 
+    const BASE_URI_US = 'https://api.intercom.io';
+    const BASE_URI_EU = 'https://api.eu.intercom.io';
+    const BASE_URI_AU = 'https://api.au.intercom.io';
+
+    /**
+     * @var string
+     */
+    private $baseUri;
+
     /**
      * @var HttpClient $httpClient
      */
@@ -139,9 +148,14 @@ class IntercomClient
      * @param string $appIdOrToken App ID.
      * @param string|null $password Api Key.
      * @param array $extraRequestHeaders Extra request headers to be sent in every api request
-     */
-    public function __construct(string $appIdOrToken, string $password = null, array $extraRequestHeaders = [])
-    {
+     * @param string $baseUri The Intercom API base URI
+     */
+    public function __construct(
+        string $appIdOrToken,
+        string $password = null,
+        array $extraRequestHeaders = [],
+        string $baseUri = self::BASE_URI_US
+    ) {
         $this->users = new IntercomUsers($this);
         $this->contacts = new IntercomContacts($this);
         $this->events = new IntercomEvents($this);
@@ -158,6 +172,7 @@ public function __construct(string $appIdOrToken, string $password = null, array
         $this->notes = new IntercomNotes($this);
         $this->teams = new IntercomTeams($this);
 
+        $this->baseUri = rtrim($baseUri, '/');
         $this->appIdOrToken = $appIdOrToken;
         $this->passwordPart = $password;
         $this->extraRequestHeaders = $extraRequestHeaders;
@@ -206,7 +221,7 @@ public function setUriFactory(UriFactory $uriFactory)
      */
     public function post($endpoint, $json)
     {
-        $response = $this->sendRequest('POST', "https://api.intercom.io/$endpoint", $json);
+        $response = $this->sendRequest('POST', "{$this->baseUri}/$endpoint", $json);
         return $this->handleResponse($response);
     }
 
@@ -219,7 +234,7 @@ public function post($endpoint, $json)
      */
     public function put($endpoint, $json)
     {
-        $response = $this->sendRequest('PUT', "https://api.intercom.io/$endpoint", $json);
+        $response = $this->sendRequest('PUT', "{$this->baseUri}/$endpoint", $json);
         return $this->handleResponse($response);
     }
 
@@ -232,7 +247,7 @@ public function put($endpoint, $json)
      */
     public function delete($endpoint, $json)
     {
-        $response = $this->sendRequest('DELETE', "https://api.intercom.io/$endpoint", $json);
+        $response = $this->sendRequest('DELETE', "{$this->baseUri}/$endpoint", $json);
         return $this->handleResponse($response);
     }
 
@@ -245,7 +260,7 @@ public function delete($endpoint, $json)
      */
     public function get($endpoint, $queryParams = [])
     {
-        $uri = $this->uriFactory->createUri("https://api.intercom.io/$endpoint");
+        $uri = $this->uriFactory->createUri("{$this->baseUri}/$endpoint");
         if (!empty($queryParams)) {
             $uri = $uri->withQuery(http_build_query($queryParams));
         }
diff --git a/tests/IntercomClientTest.php b/tests/IntercomClientTest.php
index c04abac..0a80f54 100644
--- a/tests/IntercomClientTest.php
+++ b/tests/IntercomClientTest.php
@@ -37,6 +37,7 @@ public function testBasicClient()
         foreach ($httpClient->getRequests() as $request) {
             $basic = $request->getHeaders()['Authorization'][0];
             $this->assertSame("Basic dTpw", $basic);
+            $this->assertEquals('api.intercom.io', $request->getUri()->getHost());
         }
     }
 
@@ -62,6 +63,27 @@ public function testClientWithExtraHeaders()
         }
     }
 
+    public function testClientWithDifferentBaseUri()
+    {
+        $httpClient = new Client();
+        $httpClient->addResponse(
+            new Response(200, ['X-Foo' => 'Bar'], "{\"foo\":\"bar\"}")
+        );
+
+        $client = new IntercomClient('u', 'p', [], 'https://example.com//');
+        $client->setHttpClient($httpClient);
+
+        $client->users->create([
+            'email' => 'test@intercom.io'
+        ]);
+
+        foreach ($httpClient->getRequests() as $request) {
+            $basic = $request->getHeaders()['Authorization'][0];
+            $this->assertSame("Basic dTpw", $basic);
+            $this->assertEquals('example.com', $request->getUri()->getHost());
+        }
+    }
+
     public function testClientErrorHandling()
     {
         $httpClient = new Client();