Google Sheet - OAuth "client" powered integrations (#415)

* fix `helpers.php`

* fix `.eslintrc.cjs`

* spreadsheet manager

* fetch providers. set `oauth_id` for integrations

* create spreadsheet on integration create event

* connect OAuth accounts

* display actions. connect account if missing

* cleanup

* handle form field change

* map integration data object to `SpreadsheetData`

* validate request

* wip

* redirect to integrations page

* fix refresh token

* add helper text

* add extra integration info

* refactor

* refresh google token

* fix validation

* add tests

* Fix linting issue

* Update composer lock file

---------

Co-authored-by: Julien Nahum <julien@nahum.net>

app/Integrations/Google/Google.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Integrations\Google;
+
+use App\Integrations\Google\Sheets\SpreadsheetManager;
+use App\Models\Integration\FormIntegration;
+use Google\Client as Client;
+
+class Google
+{
+    protected Client $client;
+    protected ?string $token;
+    protected ?string $refreshToken;
+
+    public function __construct(
+        protected FormIntegration $formIntegration
+    ) {
+        $this->client = new Client();
+        $this->client->setClientId(config('services.google.client_id'));
+        $this->client->setClientSecret(config('services.google.client_secret'));
+        $this->client->setAccessToken([
+            'access_token' => $this->formIntegration->provider->access_token,
+            'created' => $this->formIntegration->provider->updated_at->getTimestamp(),
+            'expires_in' => 3600,
+        ]);
+    }
+
+    public function getClient(): Client
+    {
+        if($this->client->isAccessTokenExpired()) {
+            $this->refreshToken();
+        }
+
+        return $this->client;
+    }
+
+    public function refreshToken(): static
+    {
+        $this->client->refreshToken($this->formIntegration->provider->refresh_token);
+
+        $token = $this->client->getAccessToken();
+
+        $this->formIntegration->provider->update([
+            'access_token' => $token['access_token'],
+            'refresh_token' => $token['refresh_token'],
+        ]);
+
+        return $this;
+    }
+
+    public function sheets(): SpreadsheetManager
+    {
+        return new SpreadsheetManager($this, $this->formIntegration);
+    }
+}